Added camera scaling

assets/genetica/READ ME.txt

@@ -0,0 +1,3 @@
+For a description of the contents of this pack, usage rights, and other useful details, go here:
+
+http://blog.spiralgraphics.biz/2011/02/nine-cartoon-backdrops.html

common.js

@@ -1,74 +0,0 @@
-function initializeContext(canvasId) {
-    const canvas = document.getElementById(canvasId);
-    const ctx = canvas.getContext("webgl2", { antialias: false });
-    return ctx;
-}
-class Vec2 {
-    x;
-    y;
-    constructor(x, y) {
-        this.x = x;
-        this.y = y;
-    }
-    add(other) {
-        this.x += other.x;
-        this.y += other.y;
-    }
-    addScalar(scalar) {
-        this.x += scalar;
-        this.y += scalar;
-    }
-    addNew(other) {
-        return new Vec2(this.x + other.x, this.y + other.y);
-    }
-    addScalarNew(scalar) {
-        return new Vec2(this.x + scalar, this.y + scalar);
-    }
-    sub(other) {
-        this.x -= other.x;
-        this.y -= other.y;
-    }
-    mult(scalar) {
-        this.x *= scalar;
-        this.y *= scalar;
-    }
-    multNew(scalar) {
-        return new Vec2(this.x * scalar, this.y * scalar);
-    }
-    splatToArray() {
-        return [this.x, this.y];
-    }
-    static angle(angle) {
-        const eps = 1e-6;
-        let x = Math.cos(angle);
-        let y = Math.sin(angle);
-        if ((x > 0 && x < eps)
-            || (x < 0 && x > -eps))
-            x = 0;
-        if ((y > 0 && y < eps)
-            || (y < 0 && y > -eps))
-            y = 0;
-        return new Vec2(x, y);
-    }
-}
-class Vec3 {
-    x;
-    y;
-    z;
-    constructor(x, y, z) {
-        this.x = x;
-        this.y = y;
-        this.z = z;
-    }
-    add(other) {
-        this.x += other.x;
-        this.y += other.y;
-        this.z += other.z;
-    }
-    sub(other) {
-        this.x -= other.x;
-        this.y -= other.y;
-        this.z -= other.z;
-    }
-}
-export { initializeContext, Vec2, Vec3 };

common.ts

@@ -1,96 +0,0 @@
-function initializeContext(canvasId: string): WebGL2RenderingContext | null {
-    const canvas  = document.getElementById(canvasId) as HTMLCanvasElement;
-    const ctx = canvas.getContext("webgl2", {antialias: false});
-
-    return ctx;
-}
-
-type Color = [number, number, number, number]
-
-class Vec2 {
-    x: number;
-    y: number;
-
-    constructor(x: number, y: number) {
-        this.x = x;
-        this.y = y;
-    }
-
-    add(other: Vec2) {
-        this.x += other.x;
-        this.y += other.y;
-    }
-
-    addScalar(scalar: number) {
-        this.x += scalar;
-        this.y += scalar;
-    }
-
-    addNew(other: Vec2): Vec2 {
-        return new Vec2(this.x + other.x, this.y + other.y);
-    }
-
-    addScalarNew(scalar: number): Vec2 {
-        return new Vec2(this.x + scalar, this.y + scalar);
-    }
-
-    sub(other: Vec2) {
-        this.x -= other.x;
-        this.y -= other.y;
-    }
-
-    mult(scalar: number) {
-        this.x *= scalar;
-        this.y *= scalar;
-    }
-
-    multNew(scalar: number): Vec2 {
-        return new Vec2(this.x * scalar, this.y * scalar);
-    }
-
-    splatToArray(): Array<number> {
-        return [this.x, this.y];
-    }
-
-    static angle(angle: number): Vec2 {
-        const eps = 1e-6;
-        let x = Math.cos(angle);
-        let y = Math.sin(angle);
-
-        if ((x > 0 && x < eps)
-        ||  (x < 0 && x > -eps))
-            x = 0;
-
-        if ((y > 0 && y < eps)
-        ||  (y < 0 && y > -eps))
-            y = 0;
-
-        return new Vec2(x, y);
-    }
-}
-
-class Vec3 {
-    x: number;
-    y: number;
-    z: number;
-
-    constructor(x: number, y: number, z: number) {
-        this.x = x;
-        this.y = y;
-        this.z = z;
-    }
-
-    add(other: Vec3) {
-        this.x += other.x;
-        this.y += other.y;
-        this.z += other.z;
-    }
-
-    sub(other: Vec3) {
-        this.x -= other.x;
-        this.y -= other.y;
-        this.z -= other.z;
-    }
-}
-
-export { initializeContext, Vec2, Vec3, Color };

draw.js

@@ -1,92 +0,0 @@
-import { Vec2 } from "./common.js";
-function drawTriangle(gfx, positions, color) {
-    const a_position = gfx.getAttribute("a_position");
-    const a_color = gfx.getAttribute("a_color");
-    const points = [
-        positions[0].x, positions[0].y,
-        positions[1].x, positions[1].y,
-        positions[2].x, positions[2].y,
-    ];
-    const colors = [
-        color,
-        color,
-        color,
-    ];
-    a_position.data(gfx.ctx, points, gfx.ctx.STATIC_DRAW);
-    a_color.data(gfx.ctx, colors.flat(), gfx.ctx.STATIC_DRAW);
-    gfx.ctx.drawArrays(gfx.ctx.TRIANGLES, 0, 3);
-}
-function drawTriangleExts(gfx, position, exts, color) {
-    const a_position = gfx.getAttribute("a_position");
-    const a_color = gfx.getAttribute("a_color");
-    const points = [
-        position.x, position.y,
-        position.x + exts.x, position.y,
-        position.x, position.y + exts.y,
-    ];
-    const colors = [
-        color,
-        color,
-        color,
-    ];
-    a_position.data(gfx.ctx, points, gfx.ctx.STATIC_DRAW);
-    a_color.data(gfx.ctx, colors.flat(), gfx.ctx.STATIC_DRAW);
-    gfx.ctx.drawArrays(gfx.ctx.TRIANGLES, 0, 3);
-}
-function drawRectangle(gfx, position, exts, color) {
-    const a_position = gfx.getAttribute("a_position");
-    const a_color = gfx.getAttribute("a_color");
-    const points = [
-        position.x, position.y,
-        position.x + exts.x, position.y,
-        position.x, position.y + exts.y,
-        position.x + exts.x, position.y + exts.y,
-        position.x + exts.x, position.y,
-        position.x, position.y + exts.y,
-    ];
-    const colors = [
-        color,
-        color,
-        color,
-        color,
-        color,
-        color,
-    ];
-    a_position.data(gfx.ctx, points, gfx.ctx.STATIC_DRAW);
-    a_color.data(gfx.ctx, colors.flat(), gfx.ctx.STATIC_DRAW);
-    gfx.ctx.drawArrays(gfx.ctx.TRIANGLES, 0, 6);
-}
-function drawCircle(gfx, position, radius, color) {
-    const points = new Array();
-    const precision = 40;
-    const angle = 2.0 * Math.PI / precision;
-    let a = 0;
-    for (let i = 0; i < precision; ++i) {
-        var vec = Vec2.angle(a);
-        vec.mult(radius);
-        a += angle;
-        points.push(vec);
-    }
-    for (let i = 0; i < points.length; i++) {
-        const current = points[i];
-        const next = points[(i + 1) % points.length];
-        let center = position;
-        drawTriangle(gfx, [center, center.addNew(current), center.addNew(next)], color);
-    }
-}
-function drawLine(gfx, A, B, color) {
-    const a_position = gfx.getAttribute("a_position");
-    const a_color = gfx.getAttribute("a_color");
-    let points = [
-        A.x, A.y,
-        B.x, B.y,
-    ];
-    const colors = [
-        color,
-        color,
-    ];
-    a_position.data(gfx.ctx, points, gfx.ctx.STATIC_DRAW);
-    a_color.data(gfx.ctx, colors.flat(), gfx.ctx.STATIC_DRAW);
-    gfx.ctx.drawArrays(gfx.ctx.LINES, 0, 2);
-}
-export { drawTriangle, drawTriangleExts, drawRectangle, drawCircle, drawLine };

draw.ts

@@ -1,116 +0,0 @@
-import { Vec2 } from "./common.js"
-import { Graphics } from "./graphics.js";
-import { Color } from "./common.js";
-
-function drawTriangle(gfx: Graphics, positions: [Vec2, Vec2, Vec2], color: Color) {
-    const a_position = gfx.getAttribute("a_position");
-    const a_color = gfx.getAttribute("a_color");
-
-    const points: Array<number> = [
-        positions[0].x, positions[0].y,
-        positions[1].x, positions[1].y,
-        positions[2].x, positions[2].y,
-    ]
-
-    const colors: Array<number[]> = [
-        color,
-        color,
-        color,
-    ];
-
-    a_position.data(gfx.ctx, points, gfx.ctx.STATIC_DRAW);
-    a_color.data(gfx.ctx, colors.flat(), gfx.ctx.STATIC_DRAW);
-    gfx.ctx.drawArrays(gfx.ctx.TRIANGLES, 0, 3);
-}
-
-function drawTriangleExts(gfx: Graphics, position: Vec2, exts: Vec2, color: Color) {
-    const a_position = gfx.getAttribute("a_position");
-    const a_color = gfx.getAttribute("a_color");
-
-    const points: Array<number> = [
-        position.x, position.y,
-        position.x + exts.x, position.y,
-        position.x, position.y + exts.y,
-    ]
-
-    const colors: Array<number[]> = [
-        color,
-        color,
-        color,
-    ];
-
-    a_position.data(gfx.ctx, points, gfx.ctx.STATIC_DRAW);
-    a_color.data(gfx.ctx, colors.flat(), gfx.ctx.STATIC_DRAW);
-    gfx.ctx.drawArrays(gfx.ctx.TRIANGLES, 0, 3);
-}
-
-function drawRectangle(gfx: Graphics, position: Vec2, exts: Vec2, color: Color) {
-    const a_position = gfx.getAttribute("a_position");
-    const a_color = gfx.getAttribute("a_color");
-
-    const points: Array<number> = [
-        position.x, position.y,
-        position.x + exts.x, position.y,
-        position.x, position.y + exts.y,
-        
-        position.x + exts.x, position.y + exts.y,
-        position.x + exts.x, position.y,
-        position.x, position.y + exts.y,
-    ]
-
-    const colors: Array<number[]> = [
-        color,
-        color,
-        color,
-        color,
-        color,
-        color,
-    ];
-
-    a_position.data(gfx.ctx, points, gfx.ctx.STATIC_DRAW);
-    a_color.data(gfx.ctx, colors.flat(), gfx.ctx.STATIC_DRAW);
-    gfx.ctx.drawArrays(gfx.ctx.TRIANGLES, 0, 6);
-
-}
-
-function drawCircle(gfx: Graphics, position: Vec2, radius: number, color: Color) {
-    const points: Array<Vec2> = new Array<Vec2>();
-
-    const precision = 40;
-    const angle = 2.0*Math.PI/precision;
-    let a = 0;
-    for (let i = 0; i < precision; ++i) {
-        var vec = Vec2.angle(a);
-        vec.mult(radius);
-        a += angle;
-        points.push(vec);
-    }
-
-    for (let i = 0; i < points.length; i++) {
-        const current = points[i];
-        const next = points[(i + 1) % points.length];
-        let center = position;
-        drawTriangle(gfx, [center, center.addNew(current), center.addNew(next)], color);
-    }
-}
-
-function drawLine(gfx: Graphics, A: Vec2, B: Vec2, color: Color) {
-    const a_position = gfx.getAttribute("a_position");
-    const a_color = gfx.getAttribute("a_color");
-
-    let points: Array<number> = [
-        A.x, A.y,
-        B.x, B.y,
-    ];
-
-    const colors: Array<number[]> = [
-        color,
-        color,
-    ];
-
-    a_position.data(gfx.ctx, points, gfx.ctx.STATIC_DRAW);
-    a_color.data(gfx.ctx, colors.flat(), gfx.ctx.STATIC_DRAW);
-    gfx.ctx.drawArrays(gfx.ctx.LINES, 0, 2);
-}
-
-export { drawTriangle, drawTriangleExts, drawRectangle, drawCircle, drawLine }

graphics.js

@@ -1,110 +0,0 @@
-function fullscreenCanvas(gfx, id) {
-    const canvas = document.getElementById(id);
-    canvas.width = window.innerWidth;
-    canvas.height = window.innerHeight;
-    gfx.ctx.viewport(0, 0, canvas.width, canvas.height);
-}
-function createShader(ctx, type, source) {
-    var shader = ctx.createShader(type);
-    if (!shader) {
-        throw new Error("Couldn't create shader: " + type);
-    }
-    ctx.shaderSource(shader, source);
-    ctx.compileShader(shader);
-    var success = ctx.getShaderParameter(shader, ctx.COMPILE_STATUS);
-    if (!success) {
-        console.log(ctx.getShaderInfoLog(shader));
-        ctx.deleteShader(shader);
-        throw new Error("Couldn't compile shader: " + type);
-    }
-    return shader;
-}
-function createProgram(ctx, vertexShaderSource, fragmentShaderSource) {
-    var program = ctx.createProgram();
-    if (vertexShaderSource !== null) {
-        const vs = createShader(ctx, ctx.VERTEX_SHADER, vertexShaderSource);
-        ctx.attachShader(program, vs);
-    }
-    if (fragmentShaderSource !== null) {
-        const fs = createShader(ctx, ctx.FRAGMENT_SHADER, fragmentShaderSource);
-        ctx.attachShader(program, fs);
-    }
-    ctx.linkProgram(program);
-    var success = ctx.getProgramParameter(program, ctx.LINK_STATUS);
-    if (!success) {
-        console.log(ctx.getProgramInfoLog(program));
-        ctx.deleteProgram(program);
-        throw new Error("Failed to create program!");
-    }
-    return program;
-}
-class Graphics {
-    ctx;
-    program;
-    attribs = new Map();
-    uniforms = new Map();
-    vao;
-    constructor(ctx, vs, fs) {
-        this.ctx = ctx;
-        this.program = createProgram(ctx, vs, fs);
-        this.vao = ctx.createVertexArray();
-        ctx.bindVertexArray(this.vao);
-        ctx.viewport(0, 0, ctx.canvas.width, ctx.canvas.height);
-        ctx.useProgram(this.program);
-    }
-    clear(r, g, b, a) {
-        this.ctx.clearColor(r, g, b, a);
-        this.ctx.clear(this.ctx.COLOR_BUFFER_BIT);
-    }
-    createAttribute(name) {
-        const attrib = new Attribute(this.ctx, this.program, name);
-        this.attribs.set(name, attrib);
-        return attrib;
-    }
-    getAttribute(name) {
-        const attrib = this.attribs.get(name);
-        if (attrib === undefined)
-            throw new Error("Tried to get uninitialized attribute: " + name);
-        return attrib;
-    }
-    createUniform(name) {
-        const loc = this.ctx.getUniformLocation(this.program, name);
-        if (loc === null)
-            throw new Error("Couldn't get location for uniform: " + name);
-        this.uniforms.set(name, loc);
-    }
-    getUniform(name) {
-        const loc = this.uniforms.get(name);
-        if (loc === undefined)
-            throw new Error("Tried to get uninitialized uniform: " + name);
-        return loc;
-    }
-}
-class Attribute {
-    loc;
-    buffer;
-    // TODO: maybe use undefined as default value?
-    size = 0;
-    type = 0;
-    normalized = false;
-    stride = 0;
-    offset = 0;
-    constructor(ctx, program, name) {
-        this.loc = ctx.getAttribLocation(program, name);
-        this.buffer = ctx.createBuffer();
-        ctx.enableVertexAttribArray(this.loc);
-    }
-    format(size, type, normalized, stride, offset) {
-        this.size = size;
-        this.type = type;
-        this.normalized = normalized;
-        this.stride = stride;
-        this.offset = offset;
-    }
-    data(ctx, data, usage) {
-        ctx.bindBuffer(ctx.ARRAY_BUFFER, this.buffer);
-        ctx.bufferData(ctx.ARRAY_BUFFER, new Float32Array(data), usage);
-        ctx.vertexAttribPointer(this.loc, this.size, this.type, this.normalized, this.stride, this.offset);
-    }
-}
-export { fullscreenCanvas, Graphics, Attribute };

graphics.ts

@@ -1,148 +0,0 @@
-import { Vec2 } from "./common.js"
-
-function fullscreenCanvas(gfx: Graphics, id: string) {
-    const canvas  = document.getElementById(id) as HTMLCanvasElement;
-    canvas.width  = window.innerWidth;
-    canvas.height = window.innerHeight;
-    gfx.ctx.viewport(0, 0, canvas.width, canvas.height);
-}
-
-function createShader(ctx: WebGL2RenderingContext, type: GLenum, source: string): WebGLShader {
-    var shader = ctx.createShader(type);
-    if (!shader) {
-        throw new Error("Couldn't create shader: " + type);
-    }
-
-    ctx.shaderSource(shader, source);
-    ctx.compileShader(shader);
-
-    var success = ctx.getShaderParameter(shader, ctx.COMPILE_STATUS);
-    if (!success) {
-        console.log(ctx.getShaderInfoLog(shader));
-        ctx.deleteShader(shader);
-        throw new Error("Couldn't compile shader: " + type);
-    }
-
-    return shader;
-}
-
-function createProgram(ctx: WebGL2RenderingContext, vertexShaderSource: string | null, fragmentShaderSource: string | null): WebGLProgram {
-    var program = ctx.createProgram();
-
-    if (vertexShaderSource !== null) {
-        const vs = createShader(ctx, ctx.VERTEX_SHADER, vertexShaderSource);
-        ctx.attachShader(program, vs);
-    }
-
-    if (fragmentShaderSource !== null) {
-        const fs = createShader(ctx, ctx.FRAGMENT_SHADER, fragmentShaderSource);
-        ctx.attachShader(program, fs);
-    }
-
-    ctx.linkProgram(program);
-
-    var success = ctx.getProgramParameter(program, ctx.LINK_STATUS);
-    if (!success) {
-        console.log(ctx.getProgramInfoLog(program));
-        ctx.deleteProgram(program);
-        throw new Error("Failed to create program!");
-    }
-
-    return program;
-}
-
-class Graphics {
-    ctx: WebGL2RenderingContext;
-    program: WebGLProgram;
-    attribs: Map<string, Attribute> = new Map();
-    uniforms: Map<string, WebGLUniformLocation> = new Map();
-    vao: WebGLVertexArrayObject;
-    constructor(ctx: WebGL2RenderingContext, vs: string, fs: string) {
-        this.ctx = ctx;
-        this.program = createProgram(ctx, vs, fs);
-        this.vao = ctx.createVertexArray();
-
-        ctx.bindVertexArray(this.vao);
-        ctx.viewport(0, 0, ctx.canvas.width, ctx.canvas.height);
-        ctx.useProgram(this.program);
-    }
-
-    clear(r: number, g: number, b: number, a: number) {
-        this.ctx.clearColor(r, g, b, a);
-        this.ctx.clear(this.ctx.COLOR_BUFFER_BIT);
-    }
-
-    createAttribute(name: string): Attribute {
-        const attrib = new Attribute(this.ctx, this.program, name);
-        this.attribs.set(name, attrib);
-        return attrib;
-    }
-
-    getAttribute(name: string): Attribute {
-        const attrib = this.attribs.get(name);
-
-        if (attrib === undefined)
-            throw new Error("Tried to get uninitialized attribute: " + name);
-
-        return attrib;
-    }
-
-    createUniform(name: string) {
-        const loc = this.ctx.getUniformLocation(this.program, name);
-
-        if (loc === null)
-            throw new Error("Couldn't get location for uniform: " + name);
-
-        this.uniforms.set(name, loc);
-    }
-
-    getUniform(name: string): WebGLUniformLocation {
-        const loc = this.uniforms.get(name);
-
-        if (loc === undefined)
-            throw new Error("Tried to get uninitialized uniform: " + name);
-
-        return loc;
-    }
-}
-
-class Attribute {
-    loc: GLint;
-    buffer: WebGLBuffer;
-
-    // TODO: maybe use undefined as default value?
-    size: GLint = 0;
-    type: GLenum = 0;
-    normalized: GLboolean = false;
-    stride: GLsizei = 0;
-    offset: GLintptr = 0;
-
-    constructor(ctx: WebGL2RenderingContext, program: WebGLProgram, name: string) {
-        this.loc = ctx.getAttribLocation(program, name);
-        this.buffer = ctx.createBuffer();
-
-        ctx.enableVertexAttribArray(this.loc);
-    }
-
-    format(
-        size: GLint,
-        type: GLenum,
-        normalized: GLboolean,
-        stride: GLsizei,
-        offset: GLintptr)
-    {
-        this.size = size;
-        this.type = type;
-        this.normalized = normalized;
-        this.stride = stride;
-        this.offset = offset;
-    }
-
-    data(ctx: WebGL2RenderingContext, data: Array<number>, usage: GLenum) {
-        ctx.bindBuffer(ctx.ARRAY_BUFFER, this.buffer);
-        ctx.bufferData(ctx.ARRAY_BUFFER, new Float32Array(data), usage);
-        ctx.vertexAttribPointer(this.loc, this.size, this.type, this.normalized, this.stride, this.offset);
-    }
-}
-
-export { fullscreenCanvas, Graphics, Attribute }

index.html

@@ -6,7 +6,7 @@
   <meta name="viewport" content="width=device-width,initial-scale=1" />
   <meta name="description" content="" />
   <link rel="stylesheet" href="style.css"></link>
-  <script type="module" src="script.js" defer> var exports = {}; </script>
+  <script type="module" src="src/js/script.js" defer> var exports = {}; </script>
 </head>
 <body>
   <canvas id="game"></canvas>

script.js

@@ -1,77 +0,0 @@
-import { initializeContext, Vec2 } from "./common.js";
-import { Graphics, fullscreenCanvas } from "./graphics.js";
-import * as drawing from "./draw.js";
-const vertexShader = `#version 300 es
-     
-    in vec2 a_position;
-    in vec4 a_color;
-    out vec4 color;
-    uniform vec2 u_resolution;
-     
-    void main() {
-        vec2 clipSpace = (a_position / u_resolution) * 2.0 - 1.0;
-
-        color = a_color;
-
-        gl_Position = vec4(clipSpace.xy, 0.0, 1.0);
-    }
-`;
-const fragmentShader = `#version 300 es
-
-    precision highp float;
-    in vec4 color;
-    out vec4 outColor;
-
-    void main() {
-      outColor = color;
-    }
-`;
-function draw(gfx, dt, pos, velocity) {
-    gfx.clear(0, 0, 0, 0);
-    gfx.ctx.uniform2f(gfx.getUniform("u_resolution"), gfx.ctx.canvas.width, gfx.ctx.canvas.height);
-    drawing.drawCircle(gfx, pos, 200, [1, 0, 0, 1]);
-    if (pos.x + 200 >= gfx.ctx.canvas.width) {
-        pos.x = gfx.ctx.canvas.width - 200;
-        velocity.x *= -1;
-    }
-    else if (pos.x - 200 <= 0) {
-        pos.x = 200;
-        velocity.x *= -1;
-    }
-    if (pos.y + 200 >= gfx.ctx.canvas.height) {
-        pos.y = gfx.ctx.canvas.height - 200;
-        velocity.y *= -1;
-    }
-    else if (pos.y - 200 <= 0) {
-        pos.y = 200;
-        velocity.y *= -1;
-    }
-    pos.add(velocity.multNew(dt));
-}
-(() => {
-    const canvasId = "game";
-    const ctx = initializeContext(canvasId);
-    if (ctx === null)
-        return;
-    const gfx = new Graphics(ctx, vertexShader, fragmentShader);
-    fullscreenCanvas(gfx, canvasId);
-    const a_position = gfx.createAttribute("a_position");
-    a_position.format(2, gfx.ctx.FLOAT, false, 0, 0);
-    const a_color = gfx.createAttribute("a_color");
-    a_color.format(4, gfx.ctx.FLOAT, false, 0, 0);
-    gfx.createUniform("u_resolution");
-    let pos = new Vec2(300, 300);
-    let velocity = new Vec2(200, 200);
-    let prevTimestamp = 0;
-    const frame = (timestamp) => {
-        const deltaTime = (timestamp - prevTimestamp) / 1000;
-        prevTimestamp = timestamp;
-        fullscreenCanvas(gfx, "game");
-        draw(gfx, deltaTime, pos, velocity);
-        window.requestAnimationFrame(frame);
-    };
-    window.requestAnimationFrame((timestamp) => {
-        prevTimestamp = timestamp;
-        window.requestAnimationFrame(frame);
-    });
-})();

script.ts

@@ -1,98 +0,0 @@
-import { initializeContext, Vec2 } from "./common.js";
-import { Graphics, fullscreenCanvas } from "./graphics.js";
-import * as drawing from "./draw.js";
-
-const vertexShader = 
-    `#version 300 es
-     
-    in vec2 a_position;
-    in vec4 a_color;
-    out vec4 color;
-    uniform vec2 u_resolution;
-     
-    void main() {
-        vec2 clipSpace = (a_position / u_resolution) * 2.0 - 1.0;
-
-        color = a_color;
-
-        gl_Position = vec4(clipSpace.xy, 0.0, 1.0);
-    }
-`;
-
-const fragmentShader = 
-    `#version 300 es
-
-    precision highp float;
-    in vec4 color;
-    out vec4 outColor;
-
-    void main() {
-      outColor = color;
-    }
-`;
-
-
-
-function draw(gfx: Graphics, dt: number, pos: Vec2, velocity: Vec2) {
-    gfx.clear(0, 0, 0, 0);
-    gfx.ctx.uniform2f(gfx.getUniform("u_resolution"), gfx.ctx.canvas.width, gfx.ctx.canvas.height);
-    drawing.drawCircle(gfx, pos, 200, [1, 0, 0, 1]);
-
-    if (pos.x + 200 >= gfx.ctx.canvas.width) 
-    {
-        pos.x = gfx.ctx.canvas.width - 200;
-        velocity.x *= -1;
-    } else if (pos.x - 200 <= 0)
-    {
-        pos.x = 200;
-        velocity.x *= -1;
-    }
-
-    if (pos.y + 200 >= gfx.ctx.canvas.height) 
-    {
-        pos.y = gfx.ctx.canvas.height - 200;
-        velocity.y *= -1;
-    } else if (pos.y - 200 <= 0)
-    {
-        pos.y = 200;
-        velocity.y *= -1;
-    }
-
-    pos.add(velocity.multNew(dt));
-}
-
-(() => {
-    const canvasId = "game";
-    const ctx = initializeContext(canvasId);
-    if (ctx === null) return;
-
-    const gfx = new Graphics(ctx, vertexShader, fragmentShader);
-    fullscreenCanvas(gfx, canvasId);
-
-    const a_position = gfx.createAttribute("a_position");
-    a_position.format(2, gfx.ctx.FLOAT, false, 0, 0);
-
-    const a_color = gfx.createAttribute("a_color");
-    a_color.format(4, gfx.ctx.FLOAT, false, 0, 0);
-
-    gfx.createUniform("u_resolution");
-
-    let pos = new Vec2(300, 300);
-    let velocity = new Vec2(200, 200);
-    
-    let prevTimestamp = 0;
-    const frame = (timestamp: number) => {
-        const deltaTime = (timestamp - prevTimestamp)/1000;
-        prevTimestamp = timestamp;
-
-        fullscreenCanvas(gfx, "game");
-        draw(gfx, deltaTime, pos, velocity);
-
-        window.requestAnimationFrame(frame);
-    }
-
-    window.requestAnimationFrame((timestamp) => {
-        prevTimestamp = timestamp;
-        window.requestAnimationFrame(frame);
-    });
-})();

src/js/assets.js

@@ -0,0 +1,36 @@
+import { Texture } from "./graphics.js";
+export const Colors = {
+    Red: [1, 0, 0, 1],
+    Green: [0, 1, 0, 1],
+    Blue: [0, 0, 1, 1],
+    Brown: [0.341, 0.337, 0.204, 1],
+};
+export function AssetToTileFill(name) {
+    let asset = assets.get(name);
+    return {
+        left: asset,
+        top: asset,
+        right: asset,
+    };
+}
+export class Assets {
+    assets = new Map();
+    loaded = false;
+    push(name, asset) {
+        if (this.assets.get(name) !== undefined)
+            throw new Error("Asset name occupied!");
+        this.assets.set(name, asset);
+    }
+    get(name) {
+        if (!this.loaded)
+            throw new Error("Tried to assess assets without loading them!");
+        return this.assets.get(name);
+    }
+    async load(gfx) {
+        assets.push("grass", await Texture.load(gfx, "../../assets/grass2.png"));
+        assets.push("leaves", await Texture.load(gfx, "../../assets/greenary.png"));
+        assets.push("log", await Texture.load(gfx, "../../assets/log.png"));
+        this.loaded = true;
+    }
+}
+export const assets = new Assets();

src/js/assets.ts

@@ -0,0 +1,52 @@
+import {Graphics, Texture} from "./graphics.js";
+import {TileFill} from "./world.js";
+
+export type Color = [number, number, number, number]
+
+export const Colors = {
+    Red   : [1, 0, 0, 1] as Color,
+    Green : [0, 1, 0, 1] as Color,
+    Blue  : [0, 0, 1, 1] as Color,
+    Brown : [0.341, 0.337, 0.204, 1] as Color,
+}
+
+export type Asset = Texture;
+
+export function AssetToTileFill(name: string): TileFill {
+    let asset = assets.get(name);
+
+    return {
+        left: asset,
+        top: asset,
+        right: asset,
+    };
+}
+
+export class Assets {
+    assets: Map<string, Asset> = new Map();
+    loaded: boolean = false;
+
+    push(name: string, asset: Asset) {
+        if (this.assets.get(name) !== undefined)
+            throw new Error("Asset name occupied!");
+
+        this.assets.set(name, asset);
+    }
+    
+    get(name: string): Asset {
+        if (!this.loaded)
+            throw new Error("Tried to assess assets without loading them!");
+
+        return this.assets.get(name)!;
+    }
+
+    async load(gfx: Graphics) {
+        assets.push("grass",  await Texture.load(gfx, "../../assets/grass2.png"));
+        assets.push("leaves", await Texture.load(gfx, "../../assets/greenary.png"));
+        assets.push("log",    await Texture.load(gfx, "../../assets/log.png"));
+        
+        this.loaded = true;
+    }
+}
+
+export const assets = new Assets();

src/js/common.js

@@ -0,0 +1,412 @@
+function initializeContext(canvasId) {
+    const canvas = document.getElementById(canvasId);
+    const ctx = canvas.getContext("webgl2", { antialias: false });
+    return ctx;
+}
+class Vec2 {
+    x;
+    y;
+    constructor(x, y) {
+        this.x = x;
+        this.y = y;
+    }
+    copy() {
+        return new Vec2(this.x, this.y);
+    }
+    add(other) {
+        this.x += other.x;
+        this.y += other.y;
+    }
+    addScalar(scalar) {
+        this.x += scalar;
+        this.y += scalar;
+    }
+    addNew(other) {
+        return new Vec2(this.x + other.x, this.y + other.y);
+    }
+    addScalarNew(scalar) {
+        return new Vec2(this.x + scalar, this.y + scalar);
+    }
+    sub(other) {
+        this.x -= other.x;
+        this.y -= other.y;
+    }
+    subNew(other) {
+        let vec = this.copy();
+        vec.x -= other.x;
+        vec.y -= other.y;
+        return vec;
+    }
+    multScalar(scalar) {
+        this.x *= scalar;
+        this.y *= scalar;
+    }
+    multScalarNew(scalar) {
+        return new Vec2(this.x * scalar, this.y * scalar);
+    }
+    div(other) {
+        if (other.x == 0 ||
+            other.y == 0) {
+            throw new Error("Division by zero in Vec4");
+        }
+        this.x /= other.x;
+        this.y /= other.y;
+    }
+    divNew(other) {
+        if (other.x == 0 ||
+            other.y == 0) {
+            throw new Error("Division by zero in Vec4");
+        }
+        let vec = this.copy();
+        vec.x /= other.x;
+        vec.y /= other.y;
+        return vec;
+    }
+    reduce() {
+        throw new Error("Can't reduce Vec2!");
+    }
+    extend(value) {
+        return new Vec3(this.x, this.y, value);
+    }
+    splatToArray() {
+        return [this.x, this.y];
+    }
+    static angle(angle) {
+        const eps = 1e-6;
+        let x = Math.cos(angle);
+        let y = Math.sin(angle);
+        if ((x > 0 && x < eps)
+            || (x < 0 && x > -eps))
+            x = 0;
+        if ((y > 0 && y < eps)
+            || (y < 0 && y > -eps))
+            y = 0;
+        return new Vec2(x, y);
+    }
+}
+class Vec3 {
+    x;
+    y;
+    z;
+    constructor(x, y, z) {
+        this.x = x;
+        this.y = y;
+        this.z = z;
+    }
+    copy() {
+        return new Vec3(this.x, this.y, this.z);
+    }
+    add(other) {
+        this.x += other.x;
+        this.y += other.y;
+        this.z += other.z;
+    }
+    addNew(other) {
+        let vec = this.copy();
+        vec.x += other.x;
+        vec.y += other.y;
+        vec.z += other.z;
+        return vec;
+    }
+    sub(other) {
+        this.x -= other.x;
+        this.y -= other.y;
+        this.z -= other.z;
+    }
+    subNew(other) {
+        let vec = this.copy();
+        vec.x -= other.x;
+        vec.y -= other.y;
+        vec.z -= other.z;
+        return vec;
+    }
+    multScalar(scalar) {
+        this.x *= scalar;
+        this.y *= scalar;
+        this.z *= scalar;
+    }
+    multScalarNew(scalar) {
+        let vec = this.copy();
+        vec.x *= scalar;
+        vec.y *= scalar;
+        vec.z *= scalar;
+        return vec;
+    }
+    div(other) {
+        if (other.x == 0 ||
+            other.y == 0 ||
+            other.z == 0) {
+            throw new Error("Division by zero in Vec4");
+        }
+        this.x /= other.x;
+        this.y /= other.y;
+        this.z /= other.z;
+    }
+    divNew(other) {
+        if (other.x == 0 ||
+            other.y == 0 ||
+            other.z == 0) {
+            throw new Error("Division by zero in Vec4");
+        }
+        let vec = this.copy();
+        vec.x /= other.x;
+        vec.y /= other.y;
+        vec.z /= other.z;
+        return vec;
+    }
+    reduce() {
+        return new Vec2(this.x, this.y);
+    }
+    extend(value) {
+        return new Vec4(this.x, this.y, this.z, value);
+    }
+    splatToArray() {
+        return [this.x, this.y, this.z];
+    }
+}
+class Vec4 {
+    x;
+    y;
+    z;
+    w;
+    constructor(x, y, z, w) {
+        this.x = x;
+        this.y = y;
+        this.z = z;
+        this.w = w;
+    }
+    copy() {
+        return new Vec4(this.x, this.y, this.z, this.w);
+    }
+    add(other) {
+        this.x += other.x;
+        this.y += other.y;
+        this.z += other.z;
+        this.w += other.w;
+    }
+    addNew(other) {
+        let vec = this.copy();
+        vec.x += other.x;
+        vec.y += other.y;
+        vec.z += other.z;
+        vec.w += other.w;
+        return vec;
+    }
+    sub(other) {
+        this.x -= other.x;
+        this.y -= other.y;
+        this.z -= other.z;
+        this.w -= other.w;
+    }
+    subNew(other) {
+        let vec = this.copy();
+        vec.x -= other.x;
+        vec.y -= other.y;
+        vec.z -= other.z;
+        vec.w -= other.w;
+        return vec;
+    }
+    multScalar(scalar) {
+        this.x *= scalar;
+        this.y *= scalar;
+        this.z *= scalar;
+        this.w *= scalar;
+    }
+    multScalarNew(scalar) {
+        let vec = this.copy();
+        vec.x *= scalar;
+        vec.y *= scalar;
+        vec.z *= scalar;
+        vec.w *= scalar;
+        return vec;
+    }
+    div(other) {
+        if (other.x == 0 ||
+            other.y == 0 ||
+            other.z == 0 ||
+            other.w == 0) {
+            throw new Error("Division by zero in Vec4");
+        }
+        this.x /= other.x;
+        this.y /= other.y;
+        this.z /= other.z;
+        this.w /= other.w;
+    }
+    divNew(other) {
+        if (other.x == 0 ||
+            other.y == 0 ||
+            other.z == 0 ||
+            other.w == 0) {
+            throw new Error("Division by zero in Vec4");
+        }
+        let vec = this.copy();
+        vec.x /= other.x;
+        vec.y /= other.y;
+        vec.z /= other.z;
+        vec.w /= other.w;
+        return vec;
+    }
+    reduce() {
+        return new Vec3(this.x, this.y, this.z);
+    }
+    extend(_value) {
+        throw new Error("Can't extend Vec4");
+    }
+}
+class Mat4 {
+    data;
+    constructor(i) {
+        if (i instanceof Float32Array) {
+            console.assert(i.length == 16, "Mat4 has to have 16 elements");
+            this.data = i;
+            return;
+        }
+        else if (typeof (i) === 'number') {
+            this.data = new Float32Array(16).fill(i);
+            return;
+        }
+        this.data = new Float32Array(16);
+    }
+    static IDENTITY() {
+        return new Mat4(new Float32Array([
+            1, 0, 0, 0,
+            0, 1, 0, 0,
+            0, 0, 1, 0,
+            0, 0, 0, 1,
+        ]));
+    }
+    static orthographic(left, right, bottom, top, near, far) {
+        let data = new Float32Array([
+            2 / (right - left), 0, 0, 0,
+            0, 2 / (top - bottom), 0, 0,
+            0, 0, -2 / (far - near), 0,
+            -(right + left) / (right - left),
+            -(top + bottom) / (top - bottom),
+            -(far + near) / (far - near),
+            1,
+        ]);
+        return new Mat4(data);
+    }
+    static isometric() {
+        return new Mat4(new Float32Array([
+            1, -1, 0, 0,
+            1, 1, 0, 0,
+            0, 0, 1, 0,
+            0, 0, 0, 1,
+        ]));
+    }
+    static isometric_inverse() {
+        return new Mat4(new Float32Array([
+            0.5, 0.5, 0, 0,
+            -0.5, 0.5, 0, 0,
+            0, 0, 1, 0,
+            0, 0, 0, 1,
+        ]));
+    }
+    static rotation_x(angle) {
+        let data = new Float32Array([
+            1, 0, 0, 0,
+            0, Math.cos(angle), -Math.sin(angle), 0,
+            0, Math.sin(angle), Math.cos(angle), 0,
+            0, 0, 0, 1,
+        ]);
+        return new Mat4(data);
+    }
+    static rotation_y(angle) {
+        let data = new Float32Array([
+            Math.cos(angle), 0, Math.sin(angle), 0,
+            0, 1, 0, 0,
+            -Math.sin(angle), 0, Math.cos(angle), 0,
+            0, 0, 0, 1,
+        ]);
+        return new Mat4(data);
+    }
+    static rotation_z(angle) {
+        let data = new Float32Array([
+            Math.cos(angle), -Math.sin(angle), 0, 0,
+            Math.sin(angle), Math.cos(angle), 0, 0,
+            0, 0, 1, 0,
+            0, 0, 0, 1,
+        ]);
+        return new Mat4(data);
+    }
+    static translate(t) {
+        return new Mat4(new Float32Array([
+            1, 0, 0, 0,
+            0, 1, 0, 0,
+            0, 0, 1, 0,
+            t.x, t.y, t.z, 1,
+        ]));
+    }
+    static scale(scales) {
+        return new Mat4(new Float32Array([
+            scales.x, 0, 0, 0,
+            0, scales.y, 0, 0,
+            0, 0, scales.z, 0,
+            0, 0, 0, 1,
+        ]));
+    }
+    x(n) {
+        return this.data[n];
+    }
+    y(n) {
+        return this.data[n + 4];
+    }
+    z(n) {
+        return this.data[n + 8];
+    }
+    w(n) {
+        return this.data[n + 12];
+    }
+    splat() {
+        return Array.from(this.data);
+    }
+    row(row, data) {
+        for (let i = 0; i < data.length; ++i)
+            this.data[i + 4 * row] = data[i];
+    }
+    col(col, data) {
+        for (let i = 0; i < data.length; ++i)
+            this.data[i * 4 + col] = data[i];
+    }
+    transform(v) {
+        let x = v.x * this.x(0) + v.y * this.x(1) + v.z * this.x(2) + v.w * this.x(3);
+        let y = v.x * this.y(0) + v.y * this.y(1) + v.z * this.y(2) + v.w * this.y(3);
+        let z = v.x * this.z(0) + v.y * this.z(1) + v.z * this.z(2) + v.w * this.z(3);
+        let w = v.x * this.w(0) + v.y * this.w(1) + v.z * this.w(2) + v.w * this.w(3);
+        v.x = x;
+        v.y = y;
+        v.z = z;
+        v.w = w;
+    }
+    transformNew(v) {
+        let vec = v.copy();
+        let x = v.x * this.x(0) + v.y * this.x(1) + v.z * this.x(2) + v.w * this.x(3);
+        let y = v.x * this.y(0) + v.y * this.y(1) + v.z * this.y(2) + v.w * this.y(3);
+        let z = v.x * this.z(0) + v.y * this.z(1) + v.z * this.z(2) + v.w * this.z(3);
+        let w = v.x * this.w(0) + v.y * this.w(1) + v.z * this.w(2) + v.w * this.w(3);
+        vec.x = x;
+        vec.y = y;
+        vec.z = z;
+        vec.w = w;
+        return vec;
+    }
+    multNew(other) {
+        let m = new Mat4(0);
+        for (let i = 0; i < 4; ++i) {
+            for (let j = 0; j < 4; ++j) {
+                m.data[(i * 4) + j] += this.data[(i * 4) + 0] * other.data[j + 0];
+                m.data[(i * 4) + j] += this.data[(i * 4) + 1] * other.data[j + 4];
+                m.data[(i * 4) + j] += this.data[(i * 4) + 2] * other.data[j + 8];
+                m.data[(i * 4) + j] += this.data[(i * 4) + 3] * other.data[j + 12];
+            }
+        }
+        return m;
+    }
+    multScalar(scalar) {
+        for (let i = 0; i < this.data.length; ++i) {
+            this.data[i] *= scalar;
+        }
+    }
+}
+export { initializeContext, Mat4, Vec2, Vec3, Vec4 };

src/js/common.ts

@@ -0,0 +1,555 @@
+function initializeContext(canvasId: string): WebGL2RenderingContext | null {
+    const canvas  = document.getElementById(canvasId) as HTMLCanvasElement;
+    const ctx = canvas.getContext("webgl2", {antialias: false});
+
+    return ctx;
+}
+
+// TODO: Make all vectors follow one interface
+interface Vector<P, T, N> {
+    copy(): T;
+
+    add(other: T): void;
+    addNew(other: T): T;
+
+    sub(other: T): void;
+    subNew(other: T): T;
+
+    multScalar(scalar: number): void;
+    multScalarNew(scalar: number): T;
+
+    div(other: T): void;
+    divNew(other: T): T;
+
+    reduce(): P;
+    extend(value: number): N;
+}
+
+class Vec2 implements Vector<void, Vec2, Vec3> {
+    x: number;
+    y: number;
+
+    constructor(x: number, y: number) {
+        this.x = x;
+        this.y = y;
+    }
+
+    copy(): Vec2 {
+        return new Vec2(this.x, this.y);
+    }
+
+    add(other: Vec2) {
+        this.x += other.x;
+        this.y += other.y;
+    }
+
+    addScalar(scalar: number) {
+        this.x += scalar;
+        this.y += scalar;
+    }
+
+    addNew(other: Vec2): Vec2 {
+        return new Vec2(this.x + other.x, this.y + other.y);
+    }
+
+    addScalarNew(scalar: number): Vec2 {
+        return new Vec2(this.x + scalar, this.y + scalar);
+    }
+
+    sub(other: Vec2) {
+        this.x -= other.x;
+        this.y -= other.y;
+    }
+
+    subNew(other: Vec2): Vec2 {
+        let vec = this.copy();
+
+        vec.x -= other.x;
+        vec.y -= other.y;
+        
+        return vec;
+    }
+
+    multScalar(scalar: number) {
+        this.x *= scalar;
+        this.y *= scalar;
+    }
+
+    multScalarNew(scalar: number): Vec2 {
+        return new Vec2(this.x * scalar, this.y * scalar);
+    }
+
+    div(other: Vec2) {
+        if ( other.x == 0 ||
+             other.y == 0)
+        {
+          throw new Error("Division by zero in Vec4");
+        }
+
+        this.x /= other.x;
+        this.y /= other.y;
+    }
+
+    divNew(other: Vec2): Vec2 {
+        if ( other.x == 0 ||
+             other.y == 0) 
+        {
+          throw new Error("Division by zero in Vec4");
+        }
+
+        let vec = this.copy();
+
+        vec.x /= other.x;
+        vec.y /= other.y;
+
+        return vec;
+    }
+
+    reduce(): null {
+        throw new Error("Can't reduce Vec2!");
+    }
+
+    extend(value: number): Vec3 {
+        return new Vec3(this.x, this.y, value);
+    }
+
+    splatToArray(): Array<number> {
+        return [this.x, this.y];
+    }
+
+    static angle(angle: number): Vec2 {
+        const eps = 1e-6;
+        let x = Math.cos(angle);
+        let y = Math.sin(angle);
+
+        if ((x > 0 && x < eps)
+        ||  (x < 0 && x > -eps))
+            x = 0;
+
+        if ((y > 0 && y < eps)
+        ||  (y < 0 && y > -eps))
+            y = 0;
+
+        return new Vec2(x, y);
+    }
+}
+
+class Vec3 implements Vector<Vec2, Vec3, Vec4> {
+    x: number;
+    y: number;
+    z: number;
+
+    constructor(x: number, y: number, z: number) {
+        this.x = x;
+        this.y = y;
+        this.z = z;
+    }
+
+    copy(): Vec3 {
+        return new Vec3(this.x, this.y, this.z);
+    }
+
+    add(other: Vec3) {
+        this.x += other.x;
+        this.y += other.y;
+        this.z += other.z;
+    }
+
+    addNew(other: Vec3): Vec3 {
+        let vec = this.copy();
+
+        vec.x += other.x;
+        vec.y += other.y;
+        vec.z += other.z;
+        
+        return vec;
+    }
+
+    sub(other: Vec3) {
+        this.x -= other.x;
+        this.y -= other.y;
+        this.z -= other.z;
+    }
+
+    subNew(other: Vec3): Vec3 {
+        let vec = this.copy();
+
+        vec.x -= other.x;
+        vec.y -= other.y;
+        vec.z -= other.z;
+
+        return vec;
+    }
+
+    multScalar(scalar: number) {
+        this.x *= scalar;
+        this.y *= scalar;
+        this.z *= scalar;
+    }
+
+    multScalarNew(scalar: number): Vec3 {
+        let vec = this.copy();
+
+        vec.x *= scalar;
+        vec.y *= scalar;
+        vec.z *= scalar;
+
+        return vec;
+    }
+
+    div(other: Vec3) {
+        if ( other.x == 0 ||
+             other.y == 0 ||
+             other.z == 0)
+        {
+          throw new Error("Division by zero in Vec4");
+        }
+
+        this.x /= other.x;
+        this.y /= other.y;
+        this.z /= other.z;
+    }
+
+    divNew(other: Vec3): Vec3 {
+        if ( other.x == 0 ||
+             other.y == 0 ||
+             other.z == 0)
+        {
+          throw new Error("Division by zero in Vec4");
+        }
+
+        let vec = this.copy();
+
+        vec.x /= other.x;
+        vec.y /= other.y;
+        vec.z /= other.z;
+
+        return vec;
+    }
+
+    reduce(): Vec2 {
+        return new Vec2(this.x, this.y);
+    }
+
+    extend(value: number): Vec4 {
+        return new Vec4(this.x, this.y, this.z, value);
+    }
+
+    splatToArray(): Array<number> {
+        return [this.x, this.y, this.z];
+    }
+}
+
+class Vec4 implements Vector<Vec3, Vec4, void> {
+    x: number;
+    y: number;
+    z: number;
+    w: number;
+
+    constructor(x: number, y: number, z: number, w: number) {
+        this.x = x;
+        this.y = y;
+        this.z = z;
+        this.w = w;
+    }
+
+    copy(): Vec4 {
+        return new Vec4(this.x, this.y, this.z, this.w);
+    }
+
+    add(other: Vec4) {
+        this.x += other.x;
+        this.y += other.y;
+        this.z += other.z;
+        this.w += other.w;
+    }
+
+    addNew(other: Vec4): Vec4 {
+        let vec = this.copy();
+
+        vec.x += other.x;
+        vec.y += other.y;
+        vec.z += other.z;
+        vec.w += other.w;
+
+        return vec;
+    }
+
+    sub(other: Vec4) {
+        this.x -= other.x;
+        this.y -= other.y;
+        this.z -= other.z;
+        this.w -= other.w;
+    }
+
+    subNew(other: Vec4): Vec4 {
+        let vec = this.copy();
+
+        vec.x -= other.x;
+        vec.y -= other.y;
+        vec.z -= other.z;
+        vec.w -= other.w;
+
+        return vec;
+    }
+
+    multScalar(scalar: number) {
+        this.x *= scalar;
+        this.y *= scalar;
+        this.z *= scalar;
+        this.w *= scalar;
+    }
+
+    multScalarNew(scalar: number): Vec4 {
+        let vec = this.copy();
+
+        vec.x *= scalar;
+        vec.y *= scalar;
+        vec.z *= scalar;
+        vec.w *= scalar;
+
+        return vec;
+    }
+
+    div(other: Vec4) {
+        if ( other.x == 0 ||
+             other.y == 0 ||
+             other.z == 0 ||
+             other.w == 0) 
+        {
+          throw new Error("Division by zero in Vec4");
+        }
+
+        this.x /= other.x;
+        this.y /= other.y;
+        this.z /= other.z;
+        this.w /= other.w;
+    }
+
+    divNew(other: Vec4): Vec4 {
+        if ( other.x == 0 ||
+             other.y == 0 ||
+             other.z == 0 ||
+             other.w == 0) 
+        {
+          throw new Error("Division by zero in Vec4");
+        }
+
+        let vec = this.copy();
+
+        vec.x /= other.x;
+        vec.y /= other.y;
+        vec.z /= other.z;
+        vec.w /= other.w;
+
+        return vec;
+    }
+
+    reduce(): Vec3 {
+        return new Vec3(this.x, this.y, this.z);
+    }
+
+    extend(_value: number): void {
+        throw new Error("Can't extend Vec4");
+    }
+}
+
+type Mat4Init = number | Float32Array;
+
+type Mat4Row  =  0 | 1 | 2 | 3
+type Mat4Col  =  Mat4Row
+type Mat4X    =  Mat4Row
+type Mat4Y    =  Mat4Row
+type Mat4Z    =  Mat4Row
+type Mat4W    =  Mat4Row
+
+class Mat4 {
+    data: Float32Array;
+
+    constructor(i: Mat4Init) {
+        if (i instanceof Float32Array) {
+            console.assert(i.length == 16, "Mat4 has to have 16 elements");
+            this.data = i;
+            return;
+        } else if (typeof(i) === 'number') {
+            this.data = new Float32Array(16).fill(i);
+            return;
+        }
+
+        this.data = new Float32Array(16);
+    }
+
+    static IDENTITY(): Mat4 {
+        return new Mat4(new Float32Array([
+            1, 0, 0, 0,
+            0, 1, 0, 0,
+            0, 0, 1, 0,
+            0, 0, 0, 1,
+        ]));
+    }
+
+    static orthographic(left: number, right: number, bottom: number, top: number, near: number, far: number): Mat4 {
+        let data = new Float32Array([
+           2 / (right - left), 0, 0, 0,
+           0, 2 / (top - bottom), 0, 0,
+           0, 0, -2 / (far - near), 0,
+
+           -(right + left)/(right - left),
+           -(top + bottom)/(top - bottom),
+           -(far + near)/(far - near),
+           1,
+        ]);
+
+        return new Mat4(data);
+    }
+    
+    static isometric(): Mat4 {
+        return new Mat4(new Float32Array([
+            1, -1, 0, 0,
+            1,  1, 0, 0,
+            0,  0, 1, 0,
+            0,  0, 0, 1,
+        ]));
+    }
+
+    static isometric_inverse(): Mat4 {
+        return new Mat4(new Float32Array([
+            0.5, 0.5, 0, 0,
+            -0.5, 0.5, 0, 0,
+            0,  0, 1, 0,
+            0,  0, 0, 1,
+        ]));
+    }
+
+    static rotation_x(angle: number): Mat4 {
+        let data = new Float32Array([
+            1, 0, 0, 0,
+            0, Math.cos(angle), -Math.sin(angle), 0,
+            0, Math.sin(angle), Math.cos(angle),  0,
+            0, 0, 0, 1,
+        ]);
+
+        return new Mat4(data);
+    }
+
+    static rotation_y(angle: number): Mat4 {
+        let data = new Float32Array([
+            Math.cos(angle), 0, Math.sin(angle),  0,
+            0, 1, 0, 0,
+            -Math.sin(angle), 0, Math.cos(angle), 0,
+            0, 0, 0, 1,
+        ]);
+
+        return new Mat4(data);
+    }
+
+    static rotation_z(angle: number): Mat4 {
+        let data = new Float32Array([
+            Math.cos(angle), -Math.sin(angle), 0, 0,
+            Math.sin(angle), Math.cos(angle), 0, 0,
+            0, 0, 1, 0,
+            0, 0, 0, 1,
+        ]);
+
+        return new Mat4(data);
+    }
+
+    static translate(t: Vec3): Mat4 {
+        return new Mat4(new Float32Array([
+            1, 0, 0, 0,
+            0, 1, 0, 0,
+            0, 0, 1, 0,
+            t.x, t.y, t.z, 1,
+        ]));
+    }
+
+    static scale(scales: Vec3) {
+        return new Mat4(new Float32Array([
+            scales.x, 0, 0, 0,
+            0, scales.y, 0, 0,
+            0, 0, scales.z, 0,
+            0, 0, 0, 1,
+        ]));
+    }
+
+    x(n: Mat4X) {
+        return this.data[n];
+    }
+
+    y(n: Mat4Y) {
+        return this.data[n + 4];
+    }
+
+    z(n: Mat4Z) {
+        return this.data[n + 8];
+    }
+
+    w(n: Mat4W) {
+        return this.data[n + 12];
+    }
+
+    splat() {
+        return Array.from(this.data);
+    }
+
+    row(row: Mat4Row, data: [number, number, number, number]) {
+        for (let i = 0; i < data.length; ++i)
+            this.data[i + 4 * row] = data[i];
+    }
+
+    col(col: Mat4Col, data: [number, number, number, number]) {
+        for (let i = 0; i < data.length; ++i)
+            this.data[i*4 + col] = data[i];
+    }
+
+    transform(v: Vec4) {
+        let x = v.x * this.x(0) + v.y * this.x(1) + v.z * this.x(2) + v.w * this.x(3);
+        let y = v.x * this.y(0) + v.y * this.y(1) + v.z * this.y(2) + v.w * this.y(3);
+        let z = v.x * this.z(0) + v.y * this.z(1) + v.z * this.z(2) + v.w * this.z(3);
+        let w = v.x * this.w(0) + v.y * this.w(1) + v.z * this.w(2) + v.w * this.w(3);
+
+        v.x = x;
+        v.y = y;
+        v.z = z;
+        v.w = w;
+    }
+
+    transformNew(v: Vec4): Vec4 {
+        let vec = v.copy();
+
+        let x = v.x * this.x(0) + v.y * this.x(1) + v.z * this.x(2) + v.w * this.x(3);
+        let y = v.x * this.y(0) + v.y * this.y(1) + v.z * this.y(2) + v.w * this.y(3);
+        let z = v.x * this.z(0) + v.y * this.z(1) + v.z * this.z(2) + v.w * this.z(3);
+        let w = v.x * this.w(0) + v.y * this.w(1) + v.z * this.w(2) + v.w * this.w(3);
+
+        vec.x = x;
+        vec.y = y;
+        vec.z = z;
+        vec.w = w;
+
+        return vec;
+    }
+    
+    multNew(other: Mat4): Mat4 {
+        let m = new Mat4(0);
+
+        for (let i = 0; i < 4; ++i) {
+            for (let j = 0; j < 4; ++j) {
+                m.data[(i * 4) + j] += this.data[(i * 4) + 0] * other.data[j +  0]
+                m.data[(i * 4) + j] += this.data[(i * 4) + 1] * other.data[j +  4]
+                m.data[(i * 4) + j] += this.data[(i * 4) + 2] * other.data[j +  8]
+                m.data[(i * 4) + j] += this.data[(i * 4) + 3] * other.data[j + 12]
+            }
+        }
+        
+        return m;
+    }
+
+    multScalar(scalar: number) {
+        for (let i = 0; i < this.data.length; ++i) {
+            this.data[i] *= scalar;
+        }
+    }
+}
+
+export { initializeContext, Mat4, Vec2, Vec3, Vec4 };

src/js/draw.js

@@ -0,0 +1,159 @@
+import { Vec3 } from "./common.js";
+import { Texture, DrawTag } from "./graphics.js";
+import { TileEdge } from "./world.js";
+// TODO: Don't assume tile size is same in all directions
+function cull(point, screen, tileSize) {
+    if (point.x + tileSize < screen.x)
+        return true;
+    if (point.x + tileSize > screen.x + screen.z)
+        return true;
+    if (point.y - tileSize < screen.y)
+        return true;
+    if (point.y + tileSize > screen.y + screen.w)
+        return true;
+    return false;
+}
+// Attrib format
+// position color   uv   
+//    (3)    (4)   (2)  => 3 + 4 + 2 = 9 <=> data.len % 9 == 0
+export class Rectangle {
+    fill;
+    attribs = ["a_position", "a_color", "a_tex_position"];
+    tags = [];
+    data = [];
+    stride = 0;
+    vertexStride = 0;
+    constructor(fill, tags, attribs) {
+        this.fill = fill;
+        if (attribs !== undefined) {
+            this.attribs = attribs;
+        }
+        if (tags !== undefined) {
+            this.tags = tags;
+        }
+    }
+    overrideDraw(draw) {
+        this.draw = draw;
+    }
+    draw(gfx, corners) {
+        if (this.fill instanceof Texture) {
+            this.data = [
+                corners[0].x, corners[0].y, corners[0].z, 0, 0, 0, 0, 0, 0,
+                corners[1].x, corners[1].y, corners[1].z, 0, 0, 0, 0, -1, 0,
+                corners[3].x, corners[3].y, corners[3].z, 0, 0, 0, 0, 0, -1,
+                corners[2].x, corners[2].y, corners[2].z, 0, 0, 0, 0, -1, -1,
+                corners[1].x, corners[1].y, corners[1].z, 0, 0, 0, 0, -1, 0,
+                corners[3].x, corners[3].y, corners[3].z, 0, 0, 0, 0, 0, -1,
+            ];
+        }
+        else {
+            this.data = [
+                corners[0].x, corners[0].y, corners[0].z, this.fill[0], this.fill[1], this.fill[2], this.fill[3], 0, 0,
+                corners[1].x, corners[1].y, corners[1].z, this.fill[0], this.fill[1], this.fill[2], this.fill[3], 0, 0,
+                corners[3].x, corners[3].y, corners[3].z, this.fill[0], this.fill[1], this.fill[2], this.fill[3], 0, 0,
+                corners[2].x, corners[2].y, corners[2].z, this.fill[0], this.fill[1], this.fill[2], this.fill[3], 0, 0,
+                corners[1].x, corners[1].y, corners[1].z, this.fill[0], this.fill[1], this.fill[2], this.fill[3], 0, 0,
+                corners[3].x, corners[3].y, corners[3].z, this.fill[0], this.fill[1], this.fill[2], this.fill[3], 0, 0,
+            ];
+        }
+        this.vertexStride = 9;
+        this.stride = this.vertexStride * 4;
+        gfx.toRender.push({ ...this });
+    }
+    drawExts(gfx, position, exts) {
+        if (this.fill instanceof Texture) {
+            this.data = [
+                position.x, position.y, position.z, 0, 0, 0, 0, 0, 0,
+                position.x + exts.x, position.y, position.z, 0, 0, 0, 0, -1, 0,
+                position.x, position.y + exts.y, position.z, 0, 0, 0, 0, 0, -1,
+                position.x + exts.x, position.y + exts.y, position.z, 0, 0, 0, 0, -1, -1,
+                position.x + exts.x, position.y, position.z, 0, 0, 0, 0, -1, 0,
+                position.x, position.y + exts.y, position.z, 0, 0, 0, 0, 0, -1,
+            ];
+        }
+        else {
+            this.data = [
+                position.x, position.y, position.z, this.fill[0], this.fill[1], this.fill[2], this.fill[3], 0, 0,
+                position.x + exts.x, position.y, position.z, this.fill[0], this.fill[1], this.fill[2], this.fill[3], 0, 0,
+                position.x, position.y + exts.y, position.z, this.fill[0], this.fill[1], this.fill[2], this.fill[3], 0, 0,
+                position.x + exts.x, position.y + exts.y, position.z, this.fill[0], this.fill[1], this.fill[2], this.fill[3], 0, 0,
+                position.x + exts.x, position.y, position.z, this.fill[0], this.fill[1], this.fill[2], this.fill[3], 0, 0,
+                position.x, position.y + exts.y, position.z, this.fill[0], this.fill[1], this.fill[2], this.fill[3], 0, 0,
+            ];
+        }
+        this.vertexStride = 9;
+        this.stride = this.vertexStride * 4;
+        gfx.toRender.push(this);
+    }
+}
+export function drawIsometricCube(gfx, position, exts, color, edge) {
+    let points = [
+        // Left Top
+        position,
+        //Top
+        new Vec3(position.x, position.y + exts.y, position.z),
+        //Mid
+        new Vec3(position.x + exts.x, position.y, position.z),
+        //Right Top
+        new Vec3(position.x + exts.x, position.y + exts.y, position.z),
+        //Bottom
+        new Vec3(position.x + 1.5 * exts.x, position.y - 0.5 * exts.y, position.z + 0.25 * exts.z),
+        new Vec3(position.x + 1.5 * exts.x, position.y + 0.5 * exts.y, position.z + 0.25 * exts.z),
+        new Vec3(position.x + 0.5 * exts.x, position.y - 0.5 * exts.y, position.z + 0.25 * exts.z),
+    ];
+    let r = new Rectangle(color.top, [
+        DrawTag.ISO,
+    ]);
+    // Top
+    r.draw(gfx, [
+        points[0],
+        points[1],
+        points[3],
+        points[2],
+    ]);
+    // Right Edge
+    if (edge == TileEdge.Right || edge == TileEdge.Both) {
+        r.fill = color.right;
+        r.draw(gfx, [
+            points[3],
+            points[2],
+            points[4],
+            points[5],
+        ]);
+    }
+    // Left Edge
+    if (edge == TileEdge.Left || edge == TileEdge.Both) {
+        r.fill = color.left;
+        r.draw(gfx, [
+            points[0],
+            points[2],
+            points[4],
+            points[6],
+        ]);
+    }
+}
+export function drawIsometricGrid(gfx, grid) {
+    let position = { ...grid.position };
+    let exts = new Vec3(grid.tileSize, grid.tileSize, 0);
+    let tileCoord = new Vec3(0, 0, 0);
+    // TODO: Optimize this
+    for (let k = 0; k < grid.height; ++k) {
+        for (let j = 0; j < grid.length; ++j) {
+            for (let i = 0; i < grid.width; ++i) {
+                tileCoord.x = i;
+                tileCoord.y = j;
+                tileCoord.z = k;
+                let tile = grid.getTile(tileCoord);
+                if (tile === null) {
+                    position.x += grid.tileSize;
+                    continue;
+                }
+                drawIsometricCube(gfx, new Vec3(position.x - grid.tileSize / 2 * k, position.y + grid.tileSize / 2 * k, position.z), exts, tile.fill, tile.edge);
+                position.x += grid.tileSize;
+            }
+            position.y -= grid.tileSize;
+            position.x = grid.position.x;
+        }
+        position.y = grid.position.y;
+    }
+}

src/js/draw.ts

@@ -0,0 +1,201 @@
+import { Vec3, Vec2, Vec4 } from "./common.js"
+import { Graphics, Texture, Drawable, DrawTag } from "./graphics.js";
+import { TileEdge, TileFill, Grid } from "./world.js";
+import * as Assets from "./assets.js";
+
+// TODO: Don't assume tile size is same in all directions
+function cull(point: Vec3, screen: Vec4, tileSize: number): boolean {
+    if (point.x + tileSize < screen.x)
+        return true;
+
+    if (point.x + tileSize > screen.x + screen.z)
+        return true;
+
+    if (point.y - tileSize < screen.y)
+        return true;
+
+    if (point.y + tileSize > screen.y + screen.w)
+        return true;
+
+    return false;
+}
+
+// Attrib format
+// position color   uv   
+//    (3)    (4)   (2)  => 3 + 4 + 2 = 9 <=> data.len % 9 == 0
+
+export class Rectangle implements Drawable {
+    fill: Texture | Assets.Color;
+    attribs: string[] = ["a_position", "a_color", "a_tex_position"];
+    tags: Array<DrawTag> = [];
+
+    data: number[] = [];
+    stride: number = 0;
+    vertexStride: number = 0;
+
+    constructor(fill: Texture | Assets.Color, tags?: Array<DrawTag>, attribs?: string[]) {
+        this.fill = fill;
+
+        if (attribs !== undefined) {
+            this.attribs = attribs;
+        }
+
+        if (tags !== undefined) {
+            this.tags = tags;
+        }
+    }
+
+    overrideDraw(draw: (...args: any[]) => void) {
+        this.draw = draw;
+    }
+
+    draw(gfx: Graphics, corners: [Vec3, Vec3, Vec3, Vec3]) {
+        if (this.fill instanceof Texture) {
+            this.data = [
+                corners[0].x, corners[0].y, corners[0].z, 0, 0, 0, 0,  0,  0,
+                corners[1].x, corners[1].y, corners[1].z, 0, 0, 0, 0, -1,  0,
+                corners[3].x, corners[3].y, corners[3].z, 0, 0, 0, 0,  0, -1,
+                                                           
+                corners[2].x, corners[2].y, corners[2].z, 0, 0, 0, 0, -1, -1,
+                corners[1].x, corners[1].y, corners[1].z, 0, 0, 0, 0, -1,  0,
+                corners[3].x, corners[3].y, corners[3].z, 0, 0, 0, 0,  0, -1,
+            ]
+        } else {
+            this.data = [
+                corners[0].x, corners[0].y, corners[0].z, this.fill[0], this.fill[1], this.fill[2], this.fill[3], 0, 0,
+                corners[1].x, corners[1].y, corners[1].z, this.fill[0], this.fill[1], this.fill[2], this.fill[3], 0, 0,
+                corners[3].x, corners[3].y, corners[3].z, this.fill[0], this.fill[1], this.fill[2], this.fill[3], 0, 0,
+                                                                                                                       
+                corners[2].x, corners[2].y, corners[2].z, this.fill[0], this.fill[1], this.fill[2], this.fill[3], 0, 0,
+                corners[1].x, corners[1].y, corners[1].z, this.fill[0], this.fill[1], this.fill[2], this.fill[3], 0, 0,
+                corners[3].x, corners[3].y, corners[3].z, this.fill[0], this.fill[1], this.fill[2], this.fill[3], 0, 0,
+            ]
+        }
+
+        this.vertexStride = 9;
+        this.stride = this.vertexStride * 4
+        gfx.toRender.push({...this});
+    }
+
+    drawExts(gfx: Graphics, position: Vec3, exts: Vec2) {
+        if (this.fill instanceof Texture) {
+            this.data = [
+                position.x, position.y, position.z,                     0, 0, 0, 0, 0, 0,
+                position.x + exts.x, position.y, position.z,           0, 0, 0, 0, -1, 0,
+                position.x, position.y + exts.y, position.z,           0, 0, 0, 0, 0, -1, 
+                                                                                         
+                position.x + exts.x, position.y + exts.y, position.z, 0, 0, 0, 0, -1, -1, 
+                position.x + exts.x, position.y, position.z,           0, 0, 0, 0, -1, 0, 
+                position.x, position.y + exts.y, position.z,           0, 0, 0, 0, 0, -1, 
+            ]
+        } else {
+            this.data = [
+                position.x, position.y, position.z,          this.fill[0], this.fill[1], this.fill[2], this.fill[3], 0, 0,
+                position.x + exts.x, position.y, position.z, this.fill[0], this.fill[1], this.fill[2], this.fill[3], 0, 0,
+                position.x, position.y + exts.y, position.z, this.fill[0], this.fill[1], this.fill[2], this.fill[3], 0, 0, 
+                
+                position.x + exts.x, position.y + exts.y, position.z, this.fill[0], this.fill[1], this.fill[2], this.fill[3], 0, 0, 
+                position.x + exts.x, position.y, position.z, this.fill[0], this.fill[1], this.fill[2], this.fill[3], 0, 0, 
+                position.x, position.y + exts.y, position.z, this.fill[0], this.fill[1], this.fill[2], this.fill[3], 0, 0, 
+            ]
+        }
+
+        this.vertexStride = 9;
+        this.stride = this.vertexStride * 4
+        gfx.toRender.push(this);
+    }
+}
+
+export function drawIsometricCube(gfx: Graphics, position: Vec3, exts: Vec3, color: TileFill, edge: TileEdge) {
+    let points = [
+        // Left Top
+        position,
+        //Top
+        new Vec3(position.x, position.y + exts.y, position.z),
+        //Mid
+        new Vec3(position.x + exts.x, position.y, position.z),
+        //Right Top
+        new Vec3(position.x + exts.x, position.y + exts.y, position.z),
+        //Bottom
+        new Vec3(position.x + 1.5 * exts.x, position.y - 0.5 * exts.y, position.z + 0.25 * exts.z),
+        new Vec3(position.x + 1.5 * exts.x, position.y + 0.5 * exts.y, position.z + 0.25 * exts.z),
+        new Vec3(position.x + 0.5 * exts.x, position.y - 0.5 * exts.y, position.z + 0.25 * exts.z),
+    ];
+
+    let r = new Rectangle(color.top, [
+        DrawTag.ISO,
+    ]);
+
+    // Top
+    r.draw(
+        gfx, 
+        [
+            points[0],
+            points[1],
+            points[3],
+            points[2],
+        ],
+    );
+    
+    // Right Edge
+
+    if (edge == TileEdge.Right || edge == TileEdge.Both) {
+        r.fill = color.right;
+
+        r.draw(
+            gfx, 
+            [
+                points[3],
+                points[2],
+                points[4],
+                points[5],
+            ]
+        );
+    }
+
+    // Left Edge
+    if (edge == TileEdge.Left || edge == TileEdge.Both) {
+        r.fill = color.left;
+
+        r.draw(
+            gfx, 
+            [
+                points[0],
+                points[2],
+                points[4],
+                points[6],
+            ]
+        );
+    }
+}
+
+export function drawIsometricGrid(gfx: Graphics, grid: Grid) {
+    let position = {...grid.position} as Vec3;
+    let exts = new Vec3(grid.tileSize, grid.tileSize, 0);
+    let tileCoord = new Vec3(0, 0, 0);
+
+    // TODO: Optimize this
+    for (let k = 0; k < grid.height; ++k) {
+        for (let j = 0; j < grid.length; ++j) {
+            for (let i = 0; i < grid.width; ++i) {
+                tileCoord.x = i;
+                tileCoord.y = j;
+                tileCoord.z = k;
+
+                let tile = grid.getTile(tileCoord);
+
+                if (tile === null) {
+                    position.x += grid.tileSize;
+                    continue;
+                }
+
+                drawIsometricCube(gfx, new Vec3(position.x - grid.tileSize / 2 * k, position.y + grid.tileSize / 2 * k, position.z), exts, tile.fill, tile.edge);
+
+                position.x += grid.tileSize;
+            }
+            position.y -= grid.tileSize;
+            position.x = grid.position.x;
+        }
+        position.y = grid.position.y;
+    }
+}

src/js/graphics.js

@@ -0,0 +1,220 @@
+import { Vec4 } from "./common.js";
+export function fullscreenCanvas(gfx, id) {
+    const canvas = document.getElementById(id);
+    canvas.width = window.innerWidth;
+    canvas.height = window.innerHeight;
+    gfx.ctx.viewport(0, 0, canvas.width, canvas.height);
+}
+function createShader(ctx, type, source) {
+    var shader = ctx.createShader(type);
+    if (!shader) {
+        throw new Error("Couldn't create shader: " + type);
+    }
+    ctx.shaderSource(shader, source);
+    ctx.compileShader(shader);
+    var success = ctx.getShaderParameter(shader, ctx.COMPILE_STATUS);
+    if (!success) {
+        console.log(ctx.getShaderInfoLog(shader));
+        ctx.deleteShader(shader);
+        throw new Error("Couldn't compile shader: " + type);
+    }
+    return shader;
+}
+function createProgram(ctx, vertexShaderSource, fragmentShaderSource) {
+    var program = ctx.createProgram();
+    if (vertexShaderSource !== null) {
+        const vs = createShader(ctx, ctx.VERTEX_SHADER, vertexShaderSource);
+        ctx.attachShader(program, vs);
+    }
+    if (fragmentShaderSource !== null) {
+        const fs = createShader(ctx, ctx.FRAGMENT_SHADER, fragmentShaderSource);
+        ctx.attachShader(program, fs);
+    }
+    ctx.linkProgram(program);
+    var success = ctx.getProgramParameter(program, ctx.LINK_STATUS);
+    if (!success) {
+        console.log(ctx.getProgramInfoLog(program));
+        ctx.deleteProgram(program);
+        throw new Error("Failed to create program!");
+    }
+    return program;
+}
+export var DrawTag;
+(function (DrawTag) {
+    DrawTag[DrawTag["ISO"] = 0] = "ISO";
+})(DrawTag || (DrawTag = {}));
+export class Graphics {
+    ctx;
+    program;
+    attribs = new Map();
+    uniforms = new Map();
+    vao;
+    vbo;
+    toRender = [];
+    texCount = 0;
+    constructor(ctx, vs, fs) {
+        this.ctx = ctx;
+        this.program = createProgram(ctx, vs, fs);
+        this.vao = ctx.createVertexArray();
+        this.vbo = ctx.createBuffer();
+        ctx.bindVertexArray(this.vao);
+        ctx.viewport(0, 0, ctx.canvas.width, ctx.canvas.height);
+        ctx.useProgram(this.program);
+        ctx.blendFunc(ctx.SRC_ALPHA, ctx.ONE_MINUS_SRC_ALPHA);
+        ctx.enable(ctx.BLEND);
+    }
+    clear(r, g, b, a) {
+        this.ctx.clearColor(r, g, b, a);
+        this.ctx.clear(this.ctx.COLOR_BUFFER_BIT);
+    }
+    createAttribute(name) {
+        const attrib = new Attribute(this.ctx, this.program, name);
+        this.attribs.set(name, attrib);
+        return attrib;
+    }
+    getAttribute(name) {
+        const attrib = this.attribs.get(name);
+        if (attrib === undefined)
+            throw new Error("Tried to get uninitialized attribute: " + name);
+        return attrib;
+    }
+    createUniform(name) {
+        const loc = this.ctx.getUniformLocation(this.program, name);
+        if (loc === null)
+            throw new Error("Couldn't get location for uniform: " + name);
+        this.uniforms.set(name, loc);
+    }
+    getUniform(name) {
+        const loc = this.uniforms.get(name);
+        if (loc === undefined)
+            throw new Error("Tried to get uninitialized uniform: " + name);
+        return loc;
+    }
+    draw() {
+        for (let o of this.toRender) {
+            this.ctx.bindBuffer(this.ctx.ARRAY_BUFFER, this.vbo);
+            this.ctx.bufferData(this.ctx.ARRAY_BUFFER, new Float32Array(o.data), this.ctx.STATIC_DRAW);
+            let aid = 0;
+            for (let a of o.attribs) {
+                let attr = this.getAttribute(a);
+                if (!attr.formatted)
+                    throw new Error("Tried to use unformatted attribute!");
+                this.ctx.enableVertexAttribArray(attr.loc);
+                this.ctx.vertexAttribPointer(attr.loc, attr.size, attr.type, attr.normalized, o.stride, aid * 4);
+                aid += attr.size;
+            }
+            // Generalize the tag uniforms aka. don't hard code them
+            for (let t of o.tags) {
+                switch (t) {
+                    case DrawTag.ISO: {
+                        this.ctx.uniform1ui(this.getUniform("u_isIso"), 1);
+                        break;
+                    }
+                }
+            }
+            if (o.fill instanceof Texture) {
+                this.ctx.uniform1i(this.getUniform("u_isTex"), 1);
+                o.fill.bind(this);
+            }
+            this.ctx.drawArrays(this.ctx.TRIANGLES, 0, o.data.length / o.vertexStride);
+            if (o.fill instanceof Texture) {
+                this.ctx.uniform1i(this.getUniform("u_isTex"), 0);
+                o.fill.unbind(this);
+            }
+            for (let t of o.tags) {
+                switch (t) {
+                    case DrawTag.ISO: {
+                        this.ctx.uniform1ui(this.getUniform("u_isIso"), 0);
+                        break;
+                    }
+                }
+            }
+        }
+        // TODO: Maybe add persistent rendering?
+        this.toRender = [];
+    }
+}
+export class Attribute {
+    loc;
+    formatted = false;
+    size = 0;
+    type = 0;
+    offset = 0;
+    normalized = false;
+    constructor(ctx, program, name) {
+        this.loc = ctx.getAttribLocation(program, name);
+    }
+    format(size, type, normalized, offset) {
+        this.size = size;
+        this.type = type;
+        this.normalized = normalized;
+        this.offset = offset;
+        this.formatted = true;
+    }
+}
+export class Texture {
+    tex;
+    texId;
+    width = 0;
+    height = 0;
+    constructor(texId, tex, width, height) {
+        this.height = height;
+        this.width = width;
+        this.tex = tex;
+        this.texId = texId;
+    }
+    // TODO: Load sprite sheet only once
+    // TODO: Allow changing sprite size
+    static async load(gfx, path) {
+        let image = await loadTexture(path);
+        let tex = gfx.ctx.createTexture();
+        gfx.ctx.bindTexture(gfx.ctx.TEXTURE_2D, tex);
+        gfx.ctx.texImage2D(gfx.ctx.TEXTURE_2D, 0, gfx.ctx.RGBA, gfx.ctx.RGBA, gfx.ctx.UNSIGNED_BYTE, image);
+        gfx.ctx.texParameteri(gfx.ctx.TEXTURE_2D, gfx.ctx.TEXTURE_MAG_FILTER, gfx.ctx.NEAREST);
+        gfx.ctx.texParameteri(gfx.ctx.TEXTURE_2D, gfx.ctx.TEXTURE_MIN_FILTER, gfx.ctx.NEAREST);
+        gfx.ctx.bindTexture(gfx.ctx.TEXTURE_2D, null);
+        gfx.texCount += 1;
+        return new Texture(gfx.texCount, tex, image.width, image.height);
+    }
+    bind(gfx) {
+        gfx.ctx.bindTexture(gfx.ctx.TEXTURE_2D, this.tex);
+    }
+    unbind(gfx) {
+        gfx.ctx.bindTexture(gfx.ctx.TEXTURE_2D, null);
+    }
+}
+async function loadTexture(path) {
+    return new Promise(resolve => {
+        const img = new Image();
+        img.addEventListener("load", () => {
+            resolve(img);
+        });
+        img.src = path;
+    });
+}
+export class Camera {
+    dt = 0;
+    position;
+    movement;
+    speed = 600;
+    scale = 1.0;
+    scaling = 0.0;
+    scaleSpeed = 1.5;
+    constructor(position) {
+        this.position = position;
+        this.movement = new Vec4(0, 0, 0, 0);
+    }
+    update(dt) {
+        this.dt = dt;
+        let newPosition = this.movement.multScalarNew(this.dt);
+        this.position.x += (newPosition.x + newPosition.y) * this.speed;
+        this.position.y += (newPosition.z + newPosition.w) * this.speed;
+        this.scale += this.scaling * this.dt * this.scaleSpeed;
+        if (this.scale < 0.5) {
+            this.scale = 0.5;
+        }
+        if (this.scale > 1.5) {
+            this.scale = 1.5;
+        }
+    }
+}

src/js/graphics.ts

@@ -0,0 +1,298 @@
+import * as Assets from "./assets.js";
+import {Vec2, Vec3, Vec4} from "./common.js";
+
+export function fullscreenCanvas(gfx: Graphics, id: string) {
+    const canvas  = document.getElementById(id) as HTMLCanvasElement;
+    canvas.width  = window.innerWidth;
+    canvas.height = window.innerHeight;
+    gfx.ctx.viewport(0, 0, canvas.width, canvas.height);
+}
+
+function createShader(ctx: WebGL2RenderingContext, type: GLenum, source: string): WebGLShader {
+    var shader = ctx.createShader(type);
+    if (!shader) {
+        throw new Error("Couldn't create shader: " + type);
+    }
+
+    ctx.shaderSource(shader, source);
+    ctx.compileShader(shader);
+
+    var success = ctx.getShaderParameter(shader, ctx.COMPILE_STATUS);
+    if (!success) {
+        console.log(ctx.getShaderInfoLog(shader));
+        ctx.deleteShader(shader);
+        throw new Error("Couldn't compile shader: " + type);
+    }
+
+    return shader;
+}
+
+function createProgram(ctx: WebGL2RenderingContext, vertexShaderSource: string | null, fragmentShaderSource: string | null): WebGLProgram {
+    var program = ctx.createProgram();
+
+    if (vertexShaderSource !== null) {
+        const vs = createShader(ctx, ctx.VERTEX_SHADER, vertexShaderSource);
+        ctx.attachShader(program, vs);
+    }
+
+    if (fragmentShaderSource !== null) {
+        const fs = createShader(ctx, ctx.FRAGMENT_SHADER, fragmentShaderSource);
+        ctx.attachShader(program, fs);
+    }
+
+    ctx.linkProgram(program);
+
+    var success = ctx.getProgramParameter(program, ctx.LINK_STATUS);
+    if (!success) {
+        console.log(ctx.getProgramInfoLog(program));
+        ctx.deleteProgram(program);
+        throw new Error("Failed to create program!");
+    }
+
+    return program;
+}
+
+export enum DrawTag {
+    ISO,
+}
+
+export interface Drawable {
+    fill: Texture | Assets.Color;
+    attribs: string[];
+    tags: Array<DrawTag>;
+
+    data: Array<number>;
+    vertexStride: number;
+    stride: number;
+}
+
+export class Graphics {
+    ctx: WebGL2RenderingContext;
+    program: WebGLProgram;
+    attribs: Map<string, Attribute> = new Map();
+    uniforms: Map<string, WebGLUniformLocation> = new Map();
+    vao: WebGLVertexArrayObject;
+    vbo: WebGLBuffer;
+
+    toRender: Array<Drawable> = [];
+    texCount: number = 0;
+
+    constructor(ctx: WebGL2RenderingContext, vs: string, fs: string) {
+        this.ctx = ctx;
+        this.program = createProgram(ctx, vs, fs);
+        this.vao = ctx.createVertexArray();
+        this.vbo = ctx.createBuffer();
+
+        ctx.bindVertexArray(this.vao);
+        ctx.viewport(0, 0, ctx.canvas.width, ctx.canvas.height);
+        ctx.useProgram(this.program);
+
+        ctx.blendFunc(ctx.SRC_ALPHA, ctx.ONE_MINUS_SRC_ALPHA);
+        ctx.enable(ctx.BLEND);
+    }
+
+    clear(r: number, g: number, b: number, a: number) {
+        this.ctx.clearColor(r, g, b, a);
+        this.ctx.clear(this.ctx.COLOR_BUFFER_BIT);
+    }
+
+    createAttribute(name: string): Attribute {
+        const attrib = new Attribute(this.ctx, this.program, name);
+        this.attribs.set(name, attrib);
+        return attrib;
+    }
+
+    getAttribute(name: string): Attribute {
+        const attrib = this.attribs.get(name);
+
+        if (attrib === undefined)
+            throw new Error("Tried to get uninitialized attribute: " + name);
+
+        return attrib;
+    }
+
+    createUniform(name: string) {
+        const loc = this.ctx.getUniformLocation(this.program, name);
+
+        if (loc === null)
+            throw new Error("Couldn't get location for uniform: " + name);
+
+        this.uniforms.set(name, loc);
+    }
+
+    getUniform(name: string): WebGLUniformLocation {
+        const loc = this.uniforms.get(name);
+
+        if (loc === undefined)
+            throw new Error("Tried to get uninitialized uniform: " + name);
+
+        return loc;
+    }
+
+    draw() {
+        for (let o of this.toRender) {
+            this.ctx.bindBuffer(this.ctx.ARRAY_BUFFER, this.vbo);
+            this.ctx.bufferData(this.ctx.ARRAY_BUFFER, new Float32Array(o.data), this.ctx.STATIC_DRAW);
+
+            let aid = 0;
+            for (let a of o.attribs) {
+                let attr = this.getAttribute(a);
+                if (!attr.formatted)
+                    throw new Error("Tried to use unformatted attribute!");
+                
+                this.ctx.enableVertexAttribArray(attr.loc);
+                this.ctx.vertexAttribPointer(attr.loc, attr.size, attr.type, attr.normalized, o.stride, aid * 4);
+                aid += attr.size;
+            }
+
+            // Generalize the tag uniforms aka. don't hard code them
+            for (let t of o.tags) {
+                switch (t) {
+                    case DrawTag.ISO: {
+                        this.ctx.uniform1ui(this.getUniform("u_isIso"), 1);
+                        break;
+                    }
+                }
+            }
+
+            if (o.fill instanceof Texture)
+            {
+                this.ctx.uniform1i(this.getUniform("u_isTex"), 1);
+                o.fill.bind(this);
+            }
+
+            this.ctx.drawArrays(this.ctx.TRIANGLES, 0, o.data.length / o.vertexStride);
+
+            if (o.fill instanceof Texture)
+            {
+                this.ctx.uniform1i(this.getUniform("u_isTex"), 0);
+                o.fill.unbind(this);
+            }
+
+            for (let t of o.tags) {
+                switch (t) {
+                    case DrawTag.ISO: {
+                        this.ctx.uniform1ui(this.getUniform("u_isIso"), 0);
+                        break;
+                    }
+                }
+            }
+
+        }
+
+        // TODO: Maybe add persistent rendering?
+        this.toRender = [];
+    }
+}
+
+export class Attribute {
+    loc: GLint;
+    formatted: boolean = false;
+
+    size: GLint = 0;
+    type: GLenum = 0;
+    offset: GLintptr = 0;
+    normalized: GLboolean = false;
+
+    constructor(ctx: WebGL2RenderingContext, program: WebGLProgram, name: string) {
+        this.loc = ctx.getAttribLocation(program, name);
+    }
+
+    format(
+        size: GLint,
+        type: GLenum,
+        normalized: GLboolean,
+        offset: GLintptr)
+    {
+        this.size = size;
+        this.type = type;
+        this.normalized = normalized;
+        this.offset = offset;
+
+        this.formatted = true;
+    }
+}
+
+export class Texture {
+    tex: WebGLTexture | null;
+    texId: number;
+    width: number = 0;
+    height: number = 0;
+
+    constructor(texId: number, tex: WebGLTexture, width: number, height: number) {
+        this.height = height;
+        this.width = width;
+        this.tex = tex;
+        this.texId = texId;
+    }
+
+    // TODO: Load sprite sheet only once
+    // TODO: Allow changing sprite size
+    static async load(gfx: Graphics, path: string): Promise<Texture> {
+        let image = await loadTexture(path);
+        
+        let tex = gfx.ctx.createTexture();
+        gfx.ctx.bindTexture(gfx.ctx.TEXTURE_2D, tex);
+        gfx.ctx.texImage2D(gfx.ctx.TEXTURE_2D, 0, gfx.ctx.RGBA, gfx.ctx.RGBA, gfx.ctx.UNSIGNED_BYTE, image);
+        gfx.ctx.texParameteri(gfx.ctx.TEXTURE_2D, gfx.ctx.TEXTURE_MAG_FILTER, gfx.ctx.NEAREST);
+        gfx.ctx.texParameteri(gfx.ctx.TEXTURE_2D, gfx.ctx.TEXTURE_MIN_FILTER, gfx.ctx.NEAREST);
+        gfx.ctx.bindTexture(gfx.ctx.TEXTURE_2D, null);
+
+        gfx.texCount += 1;
+        return new Texture(gfx.texCount, tex, image.width, image.height);
+    }
+
+    bind(gfx: Graphics) {
+        gfx.ctx.bindTexture(gfx.ctx.TEXTURE_2D, this.tex);
+    }
+
+    unbind(gfx: Graphics) {
+        gfx.ctx.bindTexture(gfx.ctx.TEXTURE_2D, null);
+    }
+}
+
+async function loadTexture(path: string): Promise<HTMLImageElement> {
+    return new Promise(resolve => {
+        const img = new Image();
+        img.addEventListener("load", () => {
+            resolve(img);
+        })
+        img.src = path;
+    });
+}
+
+export class Camera {
+    dt: number = 0;
+
+    position: Vec3;
+    movement: Vec4;
+    speed: number = 600;
+
+    scale: number = 1.0;
+    scaling: number = 0.0;
+    scaleSpeed: number = 1.5;
+
+    constructor(position: Vec3) {
+        this.position = position;
+        this.movement = new Vec4(0, 0, 0, 0);
+    }
+
+    update(dt: number) {
+        this.dt = dt;
+
+        let newPosition = this.movement.multScalarNew(this.dt);
+        this.position.x += (newPosition.x + newPosition.y) * this.speed;
+        this.position.y += (newPosition.z + newPosition.w) * this.speed;
+
+        this.scale += this.scaling * this.dt * this.scaleSpeed;
+
+        if (this.scale < 0.5) {
+            this.scale = 0.5;
+        }
+
+        if (this.scale > 1.5) {
+            this.scale = 1.5;
+        }
+    }
+}
+

src/js/input.js

@@ -0,0 +1,35 @@
+class KeyAction {
+    key;
+    keyup;
+    keydown;
+    data;
+    constructor(key, ku, kd, data) {
+        this.key = key;
+        this.keyup = ku;
+        this.keydown = kd;
+        this.data = data;
+    }
+}
+export class Input {
+    handlers = new Map();
+    constructor() {
+        window.addEventListener("keyup", e => {
+            this.handlers.forEach(ka => {
+                if (ka.keyup !== null && ka.key == e.code) {
+                    ka.keyup(ka.data);
+                }
+            });
+        });
+        window.addEventListener("keydown", e => {
+            this.handlers.forEach(ka => {
+                if (ka.keydown !== null && ka.key == e.code) {
+                    ka.keydown(ka.data);
+                }
+            });
+        });
+    }
+    //TODO: add modifier key support
+    addKeyAction(key, modifiers, data, keydown, keyup) {
+        this.handlers.set(key, new KeyAction(key, keydown, keyup, data));
+    }
+}

src/js/input.ts

@@ -0,0 +1,39 @@
+type Action = ((data: any) => void);
+
+class KeyAction {
+    key: string;
+    keyup: Action | null;
+    keydown: Action | null;
+    data: any;
+    constructor(key: string, ku: Action | null, kd: Action | null, data: any) {
+        this.key = key;
+        this.keyup = ku;
+        this.keydown = kd;
+        this.data = data;
+    }
+}
+
+export class Input {
+    handlers: Map<string, KeyAction> = new Map();
+    constructor() {
+        window.addEventListener("keyup", e => {
+            this.handlers.forEach(ka => {
+                if (ka.keyup !== null && ka.key == e.code) {
+                    ka.keyup(ka.data);
+                }
+            });
+        });
+        window.addEventListener("keydown", e => {
+            this.handlers.forEach(ka => {
+                if (ka.keydown !== null && ka.key == e.code) {
+                    ka.keydown(ka.data);
+                }
+            });
+        });
+    }
+
+    //TODO: add modifier key support
+    addKeyAction(key: string, modifiers: [string] | [], data: any, keydown: Action | null, keyup: Action | null) {
+        this.handlers.set(key, new KeyAction(key, keydown, keyup, data));
+    }
+}

src/js/script.js

@@ -0,0 +1,170 @@
+import { initializeContext, Vec3, Mat4, Vec4, Vec2 } from "./common.js";
+import { Graphics, fullscreenCanvas, Camera } from "./graphics.js";
+import * as drawing from "./draw.js";
+import * as wasm from "./wasm.js";
+import { Input } from "./input.js";
+import { bush, Grid, Tile, tree } from "./world.js";
+import * as Assets from "./assets.js";
+const vertexShader = `#version 300 es
+     
+    layout(location = 0) in vec3 a_position;
+    layout(location = 1) in vec2 a_tex_position;
+    layout(location = 2) in vec4 a_color;
+
+    out vec4 v_color;
+    out vec2 v_tex_position;
+
+    uniform mat4 u_matrix;
+    uniform bool u_isIso;
+    uniform bool u_isTex;
+
+    mat4 Iso = mat4(
+        1, -1, 0, 0,
+        1,  1, 0, 0,
+        0,  0, 1, 0,
+        0,  0, 0, 1
+    );
+
+    void main() {
+        vec4 orthographic;
+
+        if (u_isIso) {
+            vec4 isometric = Iso * vec4(a_position.xyz, 1.0);
+            orthographic = u_matrix * isometric;
+            //orthographic = u_matrix * vec4(a_position.xyz, 1.0);
+        } else {
+            orthographic = u_matrix * vec4(a_position.xyz, 1.0);
+        }
+
+        gl_Position = orthographic;
+
+        if (u_isTex) {
+            v_tex_position = a_tex_position;
+        } else {
+            v_color = a_color;
+        }
+    }
+`;
+const fragmentShader = `#version 300 es
+
+    precision highp float;
+
+    in vec4 v_color;
+    in vec2 v_tex_position;
+    out vec4 outColor;
+
+    uniform sampler2D u_texture;
+    uniform bool u_isTex;
+
+    void main() {
+        if (u_isTex) {
+            outColor = texture(u_texture, v_tex_position);
+        } else {
+            outColor = v_color;
+        }
+    }
+`;
+function draw(gfx, camera, dt, grid) {
+    gfx.clear(0, 0, 0, 0);
+    camera.update(dt);
+    let right = gfx.ctx.canvas.width;
+    let left = 0;
+    let top = gfx.ctx.canvas.height;
+    let bottom = 0;
+    let near = -100;
+    let far = 100;
+    let m = Mat4.IDENTITY();
+    let mo = Mat4.orthographic(left, right, bottom, top, near, far);
+    let mc = Mat4.translate(new Vec3((gfx.ctx.canvas.width / 2 - camera.position.x), (gfx.ctx.canvas.height / 2 - camera.position.y), 1.0));
+    let mr = Mat4.translate(new Vec3(-(gfx.ctx.canvas.width / 2 - camera.position.x), -(gfx.ctx.canvas.height / 2 - camera.position.y), 1.0));
+    let mt = Mat4.translate(camera.position);
+    let ms = Mat4.scale(new Vec3(camera.scale, camera.scale, 1));
+    m = m.multNew(mr);
+    m = m.multNew(ms);
+    m = m.multNew(mc);
+    m = m.multNew(mt);
+    m = m.multNew(mo);
+    gfx.ctx.uniformMatrix4fv(gfx.getUniform("u_matrix"), false, m.splat());
+    drawing.drawIsometricGrid(gfx, grid);
+    gfx.draw();
+}
+function addDefaultKeybinds(input, camera) {
+    input.addKeyAction("KeyA", [], camera, (c) => {
+        c.movement.x = 0;
+    }, (c) => {
+        c.movement.x = 1;
+    });
+    input.addKeyAction("KeyD", [], camera, (c) => {
+        c.movement.y = 0;
+    }, (c) => {
+        c.movement.y = -1;
+    });
+    input.addKeyAction("KeyW", [], camera, (c) => {
+        c.movement.z = 0;
+    }, (c) => {
+        c.movement.z = -1;
+    });
+    input.addKeyAction("KeyS", [], camera, (c) => {
+        c.movement.w = 0;
+    }, (c) => {
+        c.movement.w = 1;
+    });
+    input.addKeyAction("KeyQ", [], camera, (c) => {
+        c.scaling = 0.0;
+    }, (c) => {
+        c.scaling = 1.0;
+    });
+    input.addKeyAction("KeyE", [], camera, (c) => {
+        c.scaling = 0.0;
+    }, (c) => {
+        c.scaling = -1.0;
+    });
+}
+(async () => {
+    const canvasId = "game";
+    const ctx = initializeContext(canvasId);
+    if (ctx === null)
+        return;
+    const gfx = new Graphics(ctx, vertexShader, fragmentShader);
+    fullscreenCanvas(gfx, canvasId);
+    let a = gfx.createAttribute("a_position");
+    a.format(3, ctx.FLOAT, false, 0);
+    a = gfx.createAttribute("a_color");
+    a.format(4, ctx.FLOAT, false, 0);
+    a = gfx.createAttribute("a_tex_position");
+    a.format(2, ctx.FLOAT, false, 0);
+    gfx.createUniform("u_matrix");
+    gfx.createUniform("u_isIso");
+    gfx.createUniform("u_isTex");
+    let camera = new Camera(new Vec3(0, 0, -1));
+    await Assets.assets.load(gfx);
+    let m = Mat4.isometric();
+    let size = 100;
+    let grid = new Grid(m.transformNew(new Vec4(ctx.canvas.width / 4, ctx.canvas.height / 2, 0, 1)).reduce(), 24, size, size, 10);
+    grid.fillLayer(new Tile({
+        top: Assets.assets.get("grass"),
+        right: Assets.Colors.Brown,
+        left: Assets.Colors.Brown,
+    }), 0);
+    tree(grid, new Vec2(size / 2, size / 2));
+    bush(grid, new Vec2(size / 2 + 4, size / 2 + 4));
+    //for (let i = 0; i < 10; i++) {
+    //    tree(grid, new Vec2(Math.floor(Math.random() * size - 1), Math.floor(Math.random() * size - 1)));
+    //}
+    //grid.setTile(new Tile(Assets.AssetToTileFill("log"), TileEdge.Both), new Vec3(0, 29, 1));
+    let prevTimestamp = 0;
+    const frame = (timestamp) => {
+        const deltaTime = (timestamp - prevTimestamp) / 1000;
+        prevTimestamp = timestamp;
+        fullscreenCanvas(gfx, "game");
+        draw(gfx, camera, deltaTime, grid);
+        window.requestAnimationFrame(frame);
+    };
+    window.requestAnimationFrame((timestamp) => {
+        prevTimestamp = timestamp;
+        window.requestAnimationFrame(frame);
+    });
+    const input = new Input();
+    addDefaultKeybinds(input, camera);
+    const wasmgl = new wasm.WASMGL(await wasm.loadWasmModule("./src/wasm/module.wasm"));
+})();

src/js/script.ts

@@ -0,0 +1,230 @@
+import { initializeContext, Vec3, Mat4, Vec4, Vec2 } from "./common.js";
+import { Graphics, fullscreenCanvas, Camera, DrawTag } from "./graphics.js";
+import * as drawing from "./draw.js";
+import * as wasm from "./wasm.js";
+import { Input } from "./input.js";
+import {bush, Grid, Tile, TileEdge, tree} from "./world.js";
+import * as Assets from "./assets.js";
+
+const vertexShader = 
+    `#version 300 es
+     
+    layout(location = 0) in vec3 a_position;
+    layout(location = 1) in vec2 a_tex_position;
+    layout(location = 2) in vec4 a_color;
+
+    out vec4 v_color;
+    out vec2 v_tex_position;
+
+    uniform mat4 u_matrix;
+    uniform bool u_isIso;
+    uniform bool u_isTex;
+
+    mat4 Iso = mat4(
+        1, -1, 0, 0,
+        1,  1, 0, 0,
+        0,  0, 1, 0,
+        0,  0, 0, 1
+    );
+
+    void main() {
+        vec4 orthographic;
+
+        if (u_isIso) {
+            vec4 isometric = Iso * vec4(a_position.xyz, 1.0);
+            orthographic = u_matrix * isometric;
+            //orthographic = u_matrix * vec4(a_position.xyz, 1.0);
+        } else {
+            orthographic = u_matrix * vec4(a_position.xyz, 1.0);
+        }
+
+        gl_Position = orthographic;
+
+        if (u_isTex) {
+            v_tex_position = a_tex_position;
+        } else {
+            v_color = a_color;
+        }
+    }
+`;
+
+const fragmentShader = 
+    `#version 300 es
+
+    precision highp float;
+
+    in vec4 v_color;
+    in vec2 v_tex_position;
+    out vec4 outColor;
+
+    uniform sampler2D u_texture;
+    uniform bool u_isTex;
+
+    void main() {
+        if (u_isTex) {
+            outColor = texture(u_texture, v_tex_position);
+        } else {
+            outColor = v_color;
+        }
+    }
+`;
+
+function draw(gfx: Graphics, camera: Camera, dt: number, grid: Grid) {
+    gfx.clear(0, 0, 0, 0);
+    camera.update(dt);
+    
+    let right = gfx.ctx.canvas.width;
+    let left = 0;
+    let top = gfx.ctx.canvas.height;
+    let bottom = 0;
+    let near = -100;
+    let far = 100;
+
+    let m = Mat4.IDENTITY();
+
+    let mo = Mat4.orthographic(left, right, bottom, top, near, far);
+
+    let mc = Mat4.translate(
+        new Vec3(
+            (gfx.ctx.canvas.width / 2  - camera.position.x),
+            (gfx.ctx.canvas.height / 2 - camera.position.y),
+            1.0));
+
+    let mr = Mat4.translate(
+        new Vec3(
+            -(gfx.ctx.canvas.width / 2  - camera.position.x),
+            -(gfx.ctx.canvas.height / 2 - camera.position.y),
+            1.0));
+
+    let mt = Mat4.translate(camera.position);
+
+    let ms = Mat4.scale(new Vec3(camera.scale, camera.scale, 1));
+
+    m = m.multNew(mr);
+    m = m.multNew(ms);
+    m = m.multNew(mc);
+    m = m.multNew(mt);
+    m = m.multNew(mo);
+
+    gfx.ctx.uniformMatrix4fv(
+        gfx.getUniform("u_matrix"),
+        false,
+        m.splat()
+        );
+          
+    drawing.drawIsometricGrid(gfx, grid);
+    gfx.draw();
+}
+
+function addDefaultKeybinds(input: Input, camera: Camera) {
+    input.addKeyAction("KeyA", [], camera,
+    (c) => {
+        c.movement.x = 0;
+    },
+    (c) => {
+        c.movement.x = 1;
+    });
+
+    input.addKeyAction("KeyD", [], camera,
+    (c) => {
+        c.movement.y = 0;
+    },
+    (c) => {
+        c.movement.y = -1;
+    });
+
+    input.addKeyAction("KeyW", [], camera,
+    (c) => {
+        c.movement.z = 0;
+    },
+    (c) => {
+        c.movement.z = -1;
+    });
+
+    input.addKeyAction("KeyS", [], camera, 
+    (c) => {
+        c.movement.w = 0;
+    },
+    (c) => {
+        c.movement.w = 1;
+    });
+
+    input.addKeyAction("KeyQ", [], camera,
+    (c) => {
+        c.scaling = 0.0;
+    },
+    (c) => {
+        c.scaling = 1.0;
+    });
+
+    input.addKeyAction("KeyE", [], camera, 
+    (c) => {
+        c.scaling = 0.0;
+    },
+    (c) => {
+        c.scaling = -1.0;
+    });
+}
+
+(async () => {
+    const canvasId = "game";
+    const ctx = initializeContext(canvasId);
+    if (ctx === null) return;
+
+    const gfx = new Graphics(ctx, vertexShader, fragmentShader);
+    fullscreenCanvas(gfx, canvasId);
+
+    let a = gfx.createAttribute("a_position");
+    a.format(3, ctx.FLOAT, false, 0)
+    a = gfx.createAttribute("a_color");
+    a.format(4, ctx.FLOAT, false, 0)
+    a = gfx.createAttribute("a_tex_position");
+    a.format(2, ctx.FLOAT, false, 0)
+
+    gfx.createUniform("u_matrix");
+    gfx.createUniform("u_isIso");
+    gfx.createUniform("u_isTex");
+
+    let camera = new Camera(new Vec3(0, 0, -1));
+
+    await Assets.assets.load(gfx);
+
+    let m = Mat4.isometric();
+
+    let size = 100;
+    let grid = new Grid(m.transformNew(new Vec4(ctx.canvas.width / 4, ctx.canvas.height / 2, 0, 1)).reduce(), 24, size, size, 10);
+    grid.fillLayer(new Tile({
+        top: Assets.assets.get("grass"),
+        right: Assets.Colors.Brown,
+        left: Assets.Colors.Brown,
+    }), 0);
+
+    tree(grid, new Vec2(size / 2, size / 2));
+    bush(grid, new Vec2(size / 2 + 4, size / 2 + 4));
+    //for (let i = 0; i < 10; i++) {
+    //    tree(grid, new Vec2(Math.floor(Math.random() * size - 1), Math.floor(Math.random() * size - 1)));
+    //}
+
+    //grid.setTile(new Tile(Assets.AssetToTileFill("log"), TileEdge.Both), new Vec3(0, 29, 1));
+
+    let prevTimestamp = 0;
+    const frame = (timestamp: number) => {
+        const deltaTime = (timestamp - prevTimestamp)/1000;
+        prevTimestamp = timestamp;
+
+        fullscreenCanvas(gfx, "game");
+        draw(gfx, camera, deltaTime, grid);
+
+        window.requestAnimationFrame(frame);
+    }
+
+    window.requestAnimationFrame((timestamp) => {
+        prevTimestamp = timestamp;
+        window.requestAnimationFrame(frame);
+    });
+
+    const input = new Input();
+    addDefaultKeybinds(input, camera);
+
+    const wasmgl: wasm.WASMGL = new wasm.WASMGL(await wasm.loadWasmModule("./src/wasm/module.wasm"));
+})();

src/js/wasm.js

@@ -0,0 +1,37 @@
+export class WASMGLvalue {
+    ptr;
+    size;
+    constructor(ptr, size) {
+        this.ptr = ptr;
+        this.size = size;
+    }
+}
+export async function loadWasmModule(path) {
+    return WebAssembly.instantiateStreaming(fetch(path));
+}
+export class WASMGL {
+    exports;
+    mem;
+    constructor(wasm) {
+        this.exports = wasm.instance.exports;
+        const memSize = new Float32Array(this.exports.memory.buffer, this.exports.WASMGLmemory.value + 4, 1).at(0);
+        this.mem = new Float32Array(this.exports.memory.buffer, this.exports.WASMGLmemory.value, memSize);
+    }
+    alloc(size) {
+        const head = this.mem[2];
+        this.mem[2] += size;
+        return head;
+    }
+    setstr(ptr, str) {
+        for (let i = 0; i < str.length; i++) {
+            this.mem[ptr] = str.charCodeAt(i);
+            ++ptr;
+        }
+    }
+    set(ptr, data) {
+        data.forEach((v, i) => {
+            this.mem[ptr + i] = v;
+        });
+        return ptr;
+    }
+}

src/js/wasm.ts

@@ -0,0 +1,61 @@
+export class WASMGLvalue {
+    ptr: number;
+    size: number;
+
+    constructor(ptr: number, size: number) {
+        this.ptr = ptr;
+        this.size = size;
+    }
+}
+
+export interface WASMGLEnvironment {
+    exports: any,
+    mem: Float32Array,
+}
+
+export async function loadWasmModule(path: string): Promise<WebAssembly.WebAssemblyInstantiatedSource> {
+    return WebAssembly.instantiateStreaming(fetch(path));
+}
+
+export class WASMGL {
+    exports: any;
+    mem: Float32Array;
+
+    constructor(wasm: WebAssembly.WebAssemblyInstantiatedSource) {
+        this.exports = wasm.instance.exports;
+
+        const memSize = new Float32Array(
+            this.exports.memory.buffer,
+            this.exports.WASMGLmemory.value + 4,
+            1
+        ).at(0);
+
+        this.mem = new Float32Array(
+            this.exports.memory.buffer,
+            this.exports.WASMGLmemory.value,
+            memSize
+        );
+    }
+
+    alloc(size: number): number {
+        const head = this.mem[2];
+        this.mem[2] += size;
+
+        return head;
+    }
+
+    setstr(ptr: number, str: string) {
+        for (let i = 0; i < str.length; i++) {
+            this.mem[ptr] = str.charCodeAt(i);
+            ++ptr;
+        }
+    }
+
+    set(ptr: number, data: number[]): number {
+        data.forEach((v, i) => {
+            this.mem[ptr + i] = v;
+        });
+
+        return ptr;
+    }
+}

src/js/world.js

@@ -0,0 +1,97 @@
+import * as Assets from "./assets.js";
+import { Vec3 } from "./common.js";
+export var TileEdge;
+(function (TileEdge) {
+    TileEdge[TileEdge["None"] = 0] = "None";
+    TileEdge[TileEdge["Left"] = 1] = "Left";
+    TileEdge[TileEdge["Right"] = 2] = "Right";
+    TileEdge[TileEdge["Both"] = 3] = "Both";
+})(TileEdge || (TileEdge = {}));
+export class Tile {
+    fill = {
+        top: [1, 0, 1, 1],
+        left: [0, 0, 0, 1],
+        right: [0, 0, 0, 1],
+    };
+    edge = TileEdge.None;
+    constructor(fill, edge) {
+        if (fill !== undefined)
+            this.fill = fill;
+        if (edge !== undefined)
+            this.edge = edge;
+    }
+}
+export function ColorToTile(c) {
+    return {
+        left: c,
+        top: c,
+        right: c,
+    };
+}
+export class Grid {
+    position;
+    tiles3d;
+    tileSize;
+    width;
+    length;
+    height;
+    constructor(position, tileSize, width, length, height) {
+        this.tiles3d = new Array(height);
+        this.position = position;
+        this.tileSize = tileSize;
+        this.width = width;
+        this.length = length;
+        this.height = height;
+        let layer = new Array(width * length);
+        for (let i = 0; i < this.height; ++i)
+            this.tiles3d[i] = { ...layer };
+    }
+    fillLayer(tile, z) {
+        for (let i = 0; i < this.width; ++i) {
+            for (let j = 0; j < this.length; ++j) {
+                this.tiles3d[z][i + j * this.width] = { ...tile };
+            }
+        }
+        for (let i = 0; i < this.width; ++i) {
+            this.tiles3d[z][this.length * i - 1] = { ...tile, edge: TileEdge.Right };
+        }
+        for (let i = 0; i < this.length - 1; ++i) {
+            this.tiles3d[z][this.width * (this.length - 1) + i] = { ...tile, edge: TileEdge.Left };
+        }
+        this.tiles3d[z][this.width * this.length - 1] = { ...tile, edge: TileEdge.Both };
+    }
+    setTile(tile, coord) {
+        let index = coord.x + coord.y * this.width;
+        this.tiles3d[coord.z][index] = { ...tile };
+    }
+    getTile(coord) {
+        let index = coord.x + coord.y * this.width;
+        let tile = this.tiles3d[coord.z][index];
+        if (tile === undefined)
+            return null;
+        return tile;
+    }
+}
+export function tree(grid, position) {
+    grid.setTile(new Tile(Assets.AssetToTileFill("log"), TileEdge.Both), new Vec3(position.x, position.y, 1));
+    grid.setTile(new Tile(Assets.AssetToTileFill("log"), TileEdge.Both), new Vec3(position.x, position.y, 2));
+    grid.setTile(new Tile(Assets.AssetToTileFill("log"), TileEdge.Both), new Vec3(position.x, position.y, 3));
+    grid.setTile(new Tile(Assets.AssetToTileFill("log"), TileEdge.Both), new Vec3(position.x, position.y, 4));
+    grid.setTile(new Tile(Assets.AssetToTileFill("leaves"), TileEdge.None), new Vec3(position.x, position.y, 4));
+    grid.setTile(new Tile(Assets.AssetToTileFill("leaves"), TileEdge.Both), new Vec3(position.x, position.y + 1, 4));
+    grid.setTile(new Tile(Assets.AssetToTileFill("leaves"), TileEdge.Both), new Vec3(position.x, position.y + 1, 5));
+    grid.setTile(new Tile(Assets.AssetToTileFill("leaves"), TileEdge.Both), new Vec3(position.x, position.y, 5));
+    grid.setTile(new Tile(Assets.AssetToTileFill("leaves"), TileEdge.Both), new Vec3(position.x + 1, position.y, 4));
+    grid.setTile(new Tile(Assets.AssetToTileFill("leaves"), TileEdge.Both), new Vec3(position.x + 1, position.y, 5));
+    grid.setTile(new Tile(Assets.AssetToTileFill("leaves"), TileEdge.Both), new Vec3(position.x + 1, position.y + 1, 4));
+    grid.setTile(new Tile(Assets.AssetToTileFill("leaves"), TileEdge.Both), new Vec3(position.x + 1, position.y + 1, 5));
+}
+export function bush(grid, position) {
+    grid.setTile(new Tile(Assets.AssetToTileFill("leaves"), TileEdge.Both), position.extend(1));
+    grid.setTile(new Tile(Assets.AssetToTileFill("leaves"), TileEdge.Both), new Vec3(position.x + 1, position.y, 1));
+    grid.setTile(new Tile(Assets.AssetToTileFill("leaves"), TileEdge.Both), new Vec3(position.x, position.y + 1, 1));
+    grid.setTile(new Tile(Assets.AssetToTileFill("leaves"), TileEdge.Both), new Vec3(position.x + 1, position.y + 1, 1));
+    grid.setTile(new Tile(Assets.AssetToTileFill("leaves"), TileEdge.Both), position.extend(2));
+    grid.setTile(new Tile(Assets.AssetToTileFill("leaves"), TileEdge.Both), new Vec3(position.x + 1, position.y, 2));
+    grid.setTile(new Tile(Assets.AssetToTileFill("leaves"), TileEdge.Both), new Vec3(position.x, position.y + 1, 2));
+}

src/js/world.ts

@@ -0,0 +1,122 @@
+import * as Assets from "./assets.js";
+import {Vec2, Vec3} from "./common.js";
+import {Texture} from "./graphics.js";
+
+export enum TileEdge {
+    None,
+    Left,
+    Right,
+    Both,
+}
+
+export type TileFillament = Texture | Assets.Color;
+export type TileFill = { left: TileFillament, top: TileFillament, right: TileFillament };
+
+export class Tile {
+    fill: TileFill = {
+        top   : [1, 0, 1, 1],
+        left  : [0, 0, 0, 1],
+        right : [0, 0, 0, 1],
+    };
+    edge: TileEdge = TileEdge.None;
+
+    constructor(fill?: TileFill, edge?: TileEdge) {
+        if (fill !== undefined)
+            this.fill = fill;
+
+        if (edge !== undefined)
+            this.edge = edge;
+    }
+}
+
+export function ColorToTile(c: Assets.Color) {
+    return {
+        left: c,
+        top: c,
+        right: c,
+    };
+}
+
+export class Grid {
+    position: Vec3; 
+    tiles3d: Tile[][];
+    tileSize: number;
+
+    width:  number;
+    length: number;
+    height: number;
+
+    constructor(position: Vec3, tileSize: number, width: number, length: number, height: number) {
+        this.tiles3d = new Array<Tile[]>(height);
+        this.position = position;
+
+        this.tileSize = tileSize;
+
+        this.width = width;
+        this.length = length;
+        this.height = height;
+
+        let layer = new Array(width * length);
+
+        for (let i = 0; i < this.height; ++i)
+            this.tiles3d[i] = {...layer};
+    }
+
+    fillLayer(tile: Tile, z: number) {
+        for (let i = 0; i < this.width; ++i) {
+            for (let j = 0; j < this.length; ++j) {
+                this.tiles3d[z][i + j * this.width] = {...tile};
+            }
+        }
+
+        for (let i = 0; i < this.width; ++i) {
+            this.tiles3d[z][this.length * i - 1] = {...tile, edge: TileEdge.Right};
+        }
+
+        for (let i = 0; i < this.length - 1; ++i) {
+            this.tiles3d[z][this.width * (this.length - 1) + i] = {...tile, edge: TileEdge.Left};
+        }
+
+        this.tiles3d[z][this.width * this.length - 1] = {...tile, edge: TileEdge.Both};
+    }
+
+    setTile(tile: Tile, coord: Vec3) {
+        let index = coord.x + coord.y * this.width;
+        this.tiles3d[coord.z][index] = {...tile};
+    }
+
+    getTile(coord: Vec3): Tile | null {
+        let index = coord.x + coord.y * this.width;
+        let tile = this.tiles3d[coord.z][index];
+        
+        if (tile === undefined) return null;
+
+        return tile;
+    }
+}
+
+export function tree(grid: Grid, position: Vec2) {
+    grid.setTile(new Tile(Assets.AssetToTileFill("log"), TileEdge.Both), new Vec3(position.x, position.y, 1));
+    grid.setTile(new Tile(Assets.AssetToTileFill("log"), TileEdge.Both), new Vec3(position.x, position.y, 2));
+    grid.setTile(new Tile(Assets.AssetToTileFill("log"), TileEdge.Both), new Vec3(position.x, position.y, 3));
+    grid.setTile(new Tile(Assets.AssetToTileFill("log"), TileEdge.Both), new Vec3(position.x, position.y, 4));
+    grid.setTile(new Tile(Assets.AssetToTileFill("leaves"), TileEdge.None), new Vec3(position.x, position.y, 4));
+    grid.setTile(new Tile(Assets.AssetToTileFill("leaves"), TileEdge.Both), new Vec3(position.x, position.y + 1, 4));
+    grid.setTile(new Tile(Assets.AssetToTileFill("leaves"), TileEdge.Both), new Vec3(position.x, position.y + 1, 5));
+    grid.setTile(new Tile(Assets.AssetToTileFill("leaves"), TileEdge.Both), new Vec3(position.x, position.y, 5));
+    grid.setTile(new Tile(Assets.AssetToTileFill("leaves"), TileEdge.Both), new Vec3(position.x + 1, position.y, 4));
+    grid.setTile(new Tile(Assets.AssetToTileFill("leaves"), TileEdge.Both), new Vec3(position.x + 1, position.y, 5));
+    grid.setTile(new Tile(Assets.AssetToTileFill("leaves"), TileEdge.Both), new Vec3(position.x + 1, position.y + 1, 4));
+    grid.setTile(new Tile(Assets.AssetToTileFill("leaves"), TileEdge.Both), new Vec3(position.x + 1, position.y + 1, 5));
+}
+
+export function bush(grid: Grid, position: Vec2) {
+    grid.setTile(new Tile(Assets.AssetToTileFill("leaves"), TileEdge.Both), position.extend(1));
+    grid.setTile(new Tile(Assets.AssetToTileFill("leaves"), TileEdge.Both), new Vec3(position.x + 1, position.y, 1));
+    grid.setTile(new Tile(Assets.AssetToTileFill("leaves"), TileEdge.Both), new Vec3(position.x, position.y + 1, 1));
+    grid.setTile(new Tile(Assets.AssetToTileFill("leaves"), TileEdge.Both), new Vec3(position.x + 1, position.y + 1, 1));
+
+    grid.setTile(new Tile(Assets.AssetToTileFill("leaves"), TileEdge.Both), position.extend(2));
+    grid.setTile(new Tile(Assets.AssetToTileFill("leaves"), TileEdge.Both), new Vec3(position.x + 1, position.y, 2));
+    grid.setTile(new Tile(Assets.AssetToTileFill("leaves"), TileEdge.Both), new Vec3(position.x, position.y + 1, 2));
+}

src/wasm/build.sh

@@ -0,0 +1,10 @@
+#!/bin/bash
+
+set -xe
+
+CC="clang"
+
+CLIBS=""
+CFLAGS="--target=wasm32 -flto -Wl,--lto-O3 -nostdlib -Wl,--no-entry -Wl,--export-all"
+
+$CC $CFLAGS -o module.wasm *.c $CLIBS

src/wasm/index.html

@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="UTF-8" />
+  <title>aaa</title>
+  <meta name="viewport" content="width=device-width,initial-scale=1" />
+  <meta name="description" content="" />
+</head>
+<body>
+    <script src="test.js"></script>
+</body>
+</html>

src/wasm/main.c

@@ -0,0 +1,20 @@
+#include "wasmgl.h"
+
+void doubel(WASMGLvalue(0))
+{
+    for (int i = 0; i < size_0; ++i)
+        WASMGLset(ptr_0 + i, WASMGLmemory[ptr_0 + i] * 2.0);
+}
+
+void uppercase(WASMGLvalue(0)) {
+    int val = 0;
+
+    for (int i = 0; i < size_0; ++i)
+    {
+        val = WASMGLmemory[ptr_0 + i] - 32;
+
+        if (val < 65 || val > 122) val = WASMGLmemory[ptr_0 + i];
+
+        WASMGLset(ptr_0 + i, val);
+    }
+}

src/wasm/test.js

@@ -0,0 +1,34 @@
+(async () => {
+    let instance = await WebAssembly.instantiateStreaming(fetch("module.wasm"));
+    const memSize = new Int32Array(
+            instance.instance.exports.memory.buffer,
+            instance.instance.exports.WASMGLmemory.value + 4,
+            1
+    )[0]
+
+    let mem = new Int32Array(
+        instance.instance.exports.memory.buffer,
+        instance.instance.exports.WASMGLmemory.value,
+        memSize
+    );
+
+    let ptr = alloc(mem, 4);
+    setstr(mem, ptr, 4, "game");
+
+    console.log(String.fromCharCode(instance.instance.exports.initialize(ptr, 4)));
+})();
+
+function alloc(mem, size) {
+    const head = mem[2];
+    console.log(head);
+    mem[2] += size;
+
+    return head;
+}
+
+function setstr(mem, ptr, size, str) {
+    for (let i = 0; i < size; i++) {
+        mem[ptr] = str.charCodeAt(i);
+        ++ptr;
+    }
+}

src/wasm/wasmgl.c

@@ -0,0 +1,26 @@
+#include "wasmgl.h"
+
+float WASMGLmemory[WASMGLmemory_size] = {
+  [MEM_SIZE] = WASMGLmemory_size,
+  [MEM_HEAD] = MEM_ELEM_COUNT,
+  0,
+};
+
+WASMGLptr WASMGLmalloc(WASMGLsize size)
+{
+    WASMGLptr ptr = WASMGLmemory[MEM_HEAD];
+    WASMGLmemory[MEM_HEAD] += size;
+
+    return ptr;
+}
+
+void WASMGLset(WASMGLptr ptr, int value)
+{
+    WASMGLmemory[ptr] = value;
+}
+
+void WASMGLsetstr(WASMGLptr ptr, const char * cstr, WASMGLsize size)
+{
+    for (int i = 0; i < size; ++i)
+        WASMGLset(ptr + i, cstr[i]);
+}

src/wasm/wasmgl.h

@@ -0,0 +1,25 @@
+#ifndef WASMGL_H_
+#define WASMGL_H_
+
+#define main WASMGLmain
+
+#define WASMGLmemory_size (1024 * 1024)
+
+typedef enum {
+    MEM_NULL = 0,
+    MEM_SIZE = 1,
+    MEM_HEAD,
+    MEM_ELEM_COUNT,
+} WASMGLmemory_layout;
+
+extern float WASMGLmemory[WASMGLmemory_size];
+
+typedef unsigned int WASMGLptr;
+typedef unsigned int WASMGLsize;
+
+#define WASMGLvalue(n) WASMGLptr ptr_##n, WASMGLsize size_##n
+
+WASMGLptr WASMGLmalloc(WASMGLsize size);
+void WASMGLset(WASMGLptr ptr, int value);
+void WASMGLsetstr(WASMGLptr ptr, const char * cstr, WASMGLsize size);
+#endif // WASMGL_H_