added webGL support

.gitignore

@@ -7,6 +7,12 @@ dist/*
 # Include the demo_assets folder
 !dist/demo_assets/
 
+# Include the built-in asset folder
+!dist/builtin/
+
+# Include the hw1 assets
+!dist/hw1_assets/
+
 ### IF YOU ARE MAKING A PROJECT, YOU MAY WANT TO UNCOMMENT THIS LINE ###
 # !dist/assets/
 

dist/builtin/shaders/point.fshader

@@ -0,0 +1,7 @@
+precision mediump float;
+
+uniform vec4 u_Color;
+
+void main(){
+	gl_FragColor = u_Color;
+}

dist/builtin/shaders/point.vshader

@@ -0,0 +1,8 @@
+attribute vec4 a_Position;
+
+uniform float u_PointSize;
+
+void main(){
+	gl_Position = a_Position;
+	gl_PointSize = u_PointSize;
+}

dist/builtin/shaders/rect.fshader

@@ -0,0 +1,7 @@
+precision mediump float;
+
+uniform vec4 u_Color;
+
+void main(){
+	gl_FragColor = u_Color;
+}

dist/builtin/shaders/rect.vshader

@@ -0,0 +1,7 @@
+attribute vec4 a_Position;
+
+uniform mat4 u_Transform;
+
+void main(){
+	gl_Position = u_Transform * a_Position;
+}

dist/builtin/shaders/sprite.fshader

@@ -0,0 +1,9 @@
+precision mediump float;
+
+uniform sampler2D u_Sampler;
+
+varying vec2 v_TexCoord;
+
+void main(){
+	gl_FragColor = texture2D(u_Sampler, v_TexCoord);
+}

dist/builtin/shaders/sprite.vshader

@@ -0,0 +1,13 @@
+attribute vec4 a_Position;
+attribute vec2 a_TexCoord;
+
+uniform mat4 u_Transform;
+uniform vec2 u_texShift;
+uniform vec2 u_texScale;
+
+varying vec2 v_TexCoord;
+
+void main(){
+	gl_Position = u_Transform * a_Position;
+	v_TexCoord = a_TexCoord*u_texScale + u_texShift;
+}

dist/hw1_assets/shaders/gradient_circle.fshader

@@ -0,0 +1,24 @@
+precision mediump float;
+
+uniform vec4 u_Color;
+
+varying vec4 v_Position;
+
+void main(){
+	// Default alpha is 0
+	float alpha = 0.0;
+
+	// Radius is 0.5, since the diameter of our quad is 1
+	float radius = 0.5;
+
+	// Get the distance squared of from (0, 0)
+	float dist_sq = v_Position.x*v_Position.x + v_Position.y*v_Position.y;
+
+	if(dist_sq < radius*radius){
+		// Multiply by 4, since distance squared is at most 0.25
+		alpha = 4.0*dist_sq;
+	}
+
+	// Use the alpha value in our color
+	gl_FragColor = vec4(u_Color.rgb, alpha);
+}

dist/hw1_assets/shaders/gradient_circle.vshader

@@ -0,0 +1,11 @@
+attribute vec4 a_Position;
+
+uniform mat4 u_Transform;
+
+varying vec4 v_Position;
+
+void main(){
+	gl_Position = u_Transform * a_Position;
+
+	v_Position = a_Position;
+}

dist/hw1_assets/spritesheets/player_spaceship.json

@@ -0,0 +1,145 @@
+{
+	"name": "player_spaceship",
+	"spriteSheetImage": "player_spaceship.png",
+	"spriteWidth": 256,
+	"spriteHeight": 256,
+	"leftBuffer": 0,
+	"rightBuffer": 0,
+	"topBuffer": 0,
+	"bottomBuffer": 0,
+	"columns": 5,
+	"rows": 5,
+	"animations": [
+		{
+			"name": "idle",
+			"repeat": true,
+			"frames": [
+				{
+					"index": 0,
+					"duration": 10
+				},
+				{
+					"index": 1,
+					"duration": 10
+				},
+				{
+					"index": 2,
+					"duration": 10
+				}
+			]
+		},
+		{
+			"name": "boost",
+			"repeat": true,
+			"frames": [
+				{
+					"index": 3,
+					"duration": 10
+				},
+				{
+					"index": 4,
+					"duration": 10
+				},
+				{
+					"index": 5,
+					"duration": 10
+				}
+			]
+		},
+		{
+			"name": "shield",
+			"repeat": false,
+			"frames": [
+				{
+					"index": 6,
+					"duration": 10
+				},
+				{
+					"index": 7,
+					"duration": 10
+				},
+				{
+					"index": 8,
+					"duration": 10
+				},
+				{
+					"index": 9,
+					"duration": 10
+				},
+				{
+					"index": 10,
+					"duration": 10
+				},
+				{
+					"index": 11,
+					"duration": 10
+				},
+				{
+					"index": 12,
+					"duration": 10
+				}
+			]
+		},
+		{
+			"name": "explode",
+			"repeat": false,
+			"frames": [
+				{
+					"index": 13,
+					"duration": 10
+				},
+				{
+					"index": 14,
+					"duration": 10
+				},
+				{
+					"index": 15,
+					"duration": 10
+				},
+				{
+					"index": 16,
+					"duration": 10
+				},
+				{
+					"index": 17,
+					"duration": 10
+				},
+				{
+					"index": 18,
+					"duration": 10
+				},
+				{
+					"index": 19,
+					"duration": 10
+				},
+				{
+					"index": 20,
+					"duration": 10
+				},
+				{
+					"index": 21,
+					"duration": 10
+				},
+				{
+					"index": 22,
+					"duration": 10
+				},
+				{
+					"index": 23,
+					"duration": 10
+				}
+			]
+		},
+		{
+			"name": "explode",
+			"repeat": false,
+			"onEnd": "dead",
+			"frames": [
+				{
+					"index": 24,
+					"duration": 1
+				}
+			]
+		}
+	]
+}

src/WebGLScene.ts

@@ -0,0 +1,48 @@
+import Vec2 from "./Wolfie2D/DataTypes/Vec2";
+import { GraphicType } from "./Wolfie2D/Nodes/Graphics/GraphicTypes";
+import Point from "./Wolfie2D/Nodes/Graphics/Point";
+import Rect from "./Wolfie2D/Nodes/Graphics/Rect";
+import AnimatedSprite from "./Wolfie2D/Nodes/Sprites/AnimatedSprite";
+import Sprite from "./Wolfie2D/Nodes/Sprites/Sprite";
+import Scene from "./Wolfie2D/Scene/Scene";
+import Color from "./Wolfie2D/Utils/Color";
+
+export default class WebGLScene extends Scene {
+
+	private point: Point;
+	private rect: Rect;
+	private player: AnimatedSprite;
+	private t: number = 0;
+
+	loadScene() {
+		this.load.spritesheet("player", "hw1_assets/spritesheets/player_spaceship.json");
+	}
+
+	startScene() {
+		this.addLayer("primary");
+
+		this.point = this.add.graphic(GraphicType.POINT, "primary", {position: new Vec2(100, 100), size: new Vec2(10, 10)})
+		this.point.color = Color.CYAN;
+		console.log(this.point.color.toStringRGBA());
+
+		this.rect = <Rect>this.add.graphic(GraphicType.RECT, "primary", {position: new Vec2(300, 100), size: new Vec2(100, 50)});
+		this.rect.color = Color.ORANGE;
+
+		this.player = this.add.animatedSprite("player", "primary");
+		this.player.position.set(800, 500);
+		this.player.scale.set(0.5, 0.5);
+		this.player.animation.play("idle");
+	}
+
+	updateScene(deltaT: number) {
+		this.t += deltaT;
+
+		let s = Math.sin(this.t);
+		let c = Math.cos(this.t);
+
+		this.point.position.x = 100 + 100*c;
+		this.point.position.y = 100 + 100*s;
+
+		this.rect.rotation = this.t;
+	}
+}

src/Wolfie2D/DataTypes/Mat4x4.ts

@@ -0,0 +1,167 @@
+import Vec2 from "./Vec2";
+
+/** A 4x4 matrix0 */
+export default class Mat4x4 {
+	private mat: Float32Array;
+
+	constructor(){
+		this.mat = new Float32Array([
+			0, 0, 0, 0,
+			0, 0, 0, 0,
+			0, 0, 0, 0,
+			0, 0, 0, 0
+		]);
+	}
+
+	// Static members
+	static get IDENTITY(): Mat4x4 {
+		return new Mat4x4().identity();
+	}
+
+	static get ZERO(): Mat4x4 {
+		return new Mat4x4().zero();
+	}
+
+	// Accessors
+	set _00(x: number) {
+		this.mat[0] = x;
+	}
+
+	set(col: number, row: number, value: number): Mat4x4 {
+		if(col < 0 || col > 3 || row < 0 || row > 3){
+			throw `Error - index (${col}, ${row}) is out of bounds for Mat4x4`
+		}
+		this.mat[row*4 + col] = value;
+
+		return this;
+	}
+
+	get(col: number, row: number): number {
+		return this.mat[row*4 + col];
+	}
+
+	setAll(...items: Array<number>): Mat4x4 {
+		this.mat.set(items);
+		return this;
+	}
+
+	identity(): Mat4x4 {
+		return this.setAll(
+			1, 0, 0, 0,
+			0, 1, 0, 0,
+			0, 0, 1, 0,
+			0, 0, 0, 1
+		)
+	}
+
+	zero(): Mat4x4 {
+		return this.setAll(
+			0, 0, 0, 0,
+			0, 0, 0, 0,
+			0, 0, 0, 0,
+			0, 0, 0, 0
+		);
+	}
+
+	/**
+	 * Makes this Mat4x4 a rotation matrix of the specified number of radians ccw
+	 * @param zRadians The number of radians to rotate
+	 * @returns this Mat4x4
+	 */
+	rotate(zRadians: number): Mat4x4 {
+		return this.setAll(
+			Math.cos(zRadians), -Math.sin(zRadians), 	0, 0,
+			Math.sin(zRadians), Math.cos(zRadians), 	0, 0,
+			0, 					0, 						1, 0,
+			0, 					0, 						0, 1
+		);
+	}
+
+	/**
+	 * Turns this Mat4x4 into a translation matrix of the specified translation
+	 * @param translation The translation in x and y
+	 * @returns this Mat4x4
+	 */
+	translate(translation: Vec2 | Float32Array): Mat4x4 {
+		// If translation is a vec, get its array
+		if(translation instanceof Vec2){
+			translation = translation.toArray();
+		}
+
+		return this.setAll(
+			1, 0, 0, translation[0],
+			0, 1, 0, translation[1],
+			0, 0, 1, 0,
+			0, 0, 0, 1
+		);
+	}
+
+	scale(scale: Vec2 | Float32Array | number): Mat4x4 {
+		// Make sure scale is a float32Array
+		if(scale instanceof Vec2){
+			scale = scale.toArray();
+		} else if(!(scale instanceof Float32Array)){
+			scale = new Float32Array([scale, scale]);
+		}
+
+		return this.setAll(
+			scale[0], 0, 		0, 0,
+			0, 		  scale[1], 0, 0,
+			0, 		  0,		1, 0,
+			0, 		  0,		0, 1
+		);
+	}
+
+	/**
+	 * Returns a new Mat4x4 that represents the right side multiplication THIS x OTHER
+	 * @param other The other Mat4x4 to multiply by
+	 * @returns a new Mat4x4 containing the product of these two Mat4x4s
+	 */
+	mult(other: Mat4x4, out?: Mat4x4): Mat4x4 {
+		let temp = new Float32Array(16);
+
+		for(let i = 0; i < 4; i++){
+			for(let j = 0; j < 4; j++){
+				let value = 0;
+				for(let k = 0; k < 4; k++){
+					value += this.get(k, i) * other.get(j, k);
+				}
+				temp[j*4 + i]  = value;
+			}
+		}
+
+		if(out !== undefined){
+			return out.setAll(...temp);
+		} else {
+			return new Mat4x4().setAll(...temp);
+		}
+	}
+
+	/**
+	 * Multiplies all given matricies in order. e.g. MULT(A, B, C) -> A*B*C
+	 * @param mats A list of Mat4x4s to multiply in order
+	 * @returns A new Mat4x4 holding the result of the operation
+	 */
+	static MULT(...mats: Array<Mat4x4>): Mat4x4 {
+		// Create a new array
+		let temp = Mat4x4.IDENTITY;
+
+		// Multiply by every array in order, in place
+		for(let i = 0; i < mats.length; i++){
+			temp.mult(mats[i], temp);
+		}
+
+		return temp;
+	}
+
+	toArray(): Float32Array {
+		return this.mat;
+	}
+
+	toString(): string {
+		return  `|${this.mat[0].toFixed(2)}, ${this.mat[1].toFixed(2)}, ${this.mat[2].toFixed(2)}, ${this.mat[3].toFixed(2)}|\n` + 
+				`|${this.mat[4].toFixed(2)}, ${this.mat[5].toFixed(2)}, ${this.mat[6].toFixed(2)}, ${this.mat[7].toFixed(2)}|\n` +
+				`|${this.mat[8].toFixed(2)}, ${this.mat[9].toFixed(2)}, ${this.mat[10].toFixed(2)}, ${this.mat[11].toFixed(2)}|\n` +
+				`|${this.mat[12].toFixed(2)}, ${this.mat[13].toFixed(2)}, ${this.mat[14].toFixed(2)}, ${this.mat[15].toFixed(2)}|`;
+	}
+}

src/Wolfie2D/DataTypes/Rendering/WebGLGameTexture.ts

@@ -0,0 +1,5 @@
+export default class WebGLGameTexture {
+	webGLTextureId: number;
+	webGLTexture: WebGLTexture;
+	imageKey: string;
+}

src/Wolfie2D/DataTypes/Rendering/WebGLProgramType.ts

@@ -0,0 +1,29 @@
+/** A container for info about a webGL shader program */
+export default class WebGLProgramType {
+	/** A webGL program */
+	program: WebGLProgram;
+	
+	/** A vertex shader */
+	vertexShader: WebGLShader;
+
+	/** A fragment shader */
+	fragmentShader: WebGLShader;
+
+	/**
+	 * Deletes this shader program
+	 */
+	delete(gl: WebGLRenderingContext): void {
+		// Clean up all aspects of this program
+		if(this.program){
+			gl.deleteProgram(this.program);
+		}
+			
+		if(this.vertexShader){
+			gl.deleteShader(this.vertexShader);
+		}
+
+		if(this.fragmentShader){
+			gl.deleteShader(this.fragmentShader);
+		}
+	}
+}

src/Wolfie2D/DataTypes/Vec2.ts

@@ -383,6 +383,10 @@ export default class Vec2 {
 		this.onChange = f;
 	}
 
+	toArray(): Float32Array {
+		return this.vec;
+	}
+
 	/**
 	 * Performs linear interpolation between two vectors
 	 * @param a The first vector

src/Wolfie2D/Loop/Game.ts

@@ -16,6 +16,8 @@ import GameLoop from "./GameLoop";
 import FixedUpdateGameLoop from "./FixedUpdateGameLoop";
 import EnvironmentInitializer from "./EnvironmentInitializer";
 import Vec2 from "../DataTypes/Vec2";
+import Registry from "../Registry/Registry";
+import WebGLRenderer from "../Rendering/WebGLRenderer";
 
 /**
  * The main loop of the game engine.
@@ -36,7 +38,7 @@ export default class Game {
 	readonly WIDTH: number;
     readonly HEIGHT: number;
     private viewport: Viewport;
-    private ctx: CanvasRenderingContext2D;
+    private ctx: CanvasRenderingContext2D | WebGLRenderingContext;
     private clearColor: Color;
     
     // All of the necessary subsystems that need to run here
@@ -73,8 +75,12 @@ export default class Game {
         this.WIDTH = this.gameOptions.canvasSize.x;
         this.HEIGHT = this.gameOptions.canvasSize.y;
 
-        // For now, just hard code a canvas renderer. We can do this with options later
+        // This step MUST happen before the resource manager does anything
+        if(this.gameOptions.useWebGL){
+            this.renderingManager = new WebGLRenderer();
+        } else {
             this.renderingManager = new CanvasRenderer();
+        }
         this.initializeGameWindow();
         this.ctx = this.renderingManager.initializeCanvas(this.GAME_CANVAS, this.WIDTH, this.HEIGHT);
         this.clearColor = new Color(this.gameOptions.clearColor.r, this.gameOptions.clearColor.g, this.gameOptions.clearColor.b);
@@ -131,8 +137,14 @@ export default class Game {
         // Set the render function of the loop
         this.loop.doRender = () => this.render();
 
-        // Start the loop
+        // Preload registry items
+        Registry.preload();
+
+        // Load the items with the resource manager
+        this.resourceManager.loadResourcesFromQueue(() => {
+            // When we're dont loading, start the loop
             this.loop.start();
+        });
     }
 
     /**
@@ -164,12 +176,17 @@ export default class Game {
      */
     render(): void {
         // Clear the canvases
-        this.ctx.clearRect(0, 0, this.WIDTH, this.HEIGHT);
         Debug.clearCanvas();
 
-        // Game Canvas
+        if(this.gameOptions.useWebGL){
-        this.ctx.fillStyle = this.clearColor.toString();
+            (<WebGLRenderingContext>this.ctx).clearColor(this.clearColor.r, this.clearColor.g, this.clearColor.b, this.clearColor.a);
-        this.ctx.fillRect(0, 0, this.WIDTH, this.HEIGHT);
+            (<WebGLRenderingContext>this.ctx).clear((<WebGLRenderingContext>this.ctx).COLOR_BUFFER_BIT | (<WebGLRenderingContext>this.ctx).DEPTH_BUFFER_BIT);
+        } else {
+            (<CanvasRenderingContext2D>this.ctx).clearRect(0, 0, this.WIDTH, this.HEIGHT);
+            (<CanvasRenderingContext2D>this.ctx).fillStyle = this.clearColor.toString();
+            (<CanvasRenderingContext2D>this.ctx).fillRect(0, 0, this.WIDTH, this.HEIGHT);
+        }
+
         this.sceneManager.render();
 
         // Debug render

src/Wolfie2D/Loop/GameOptions.ts

@@ -20,6 +20,9 @@ export default class GameOptions {
     /* Whether or not the stats rendering should occur */
     showStats: boolean;
 
+    /* Whether or not to use webGL */
+    useWebGL: boolean;
+
     /**
      * Parses the data in the raw options object
      * @param options The game options as a Record
@@ -34,6 +37,7 @@ export default class GameOptions {
         gOpt.inputs = options.inputs ? options.inputs : [];
         gOpt.showDebug = !!options.showDebug;
         gOpt.showStats = !!options.showStats;
+        gOpt.useWebGL = !!options.useWebGL;
 
         return gOpt;
     }

src/Wolfie2D/Nodes/CanvasNode.ts

@@ -12,6 +12,8 @@ export default abstract class CanvasNode extends GameNode implements Region {
 	private _size: Vec2;
 	private _scale: Vec2;
 	private _boundary: AABB;
+	private _hasCustomShader: boolean;
+	private _customShaderKey: string;
 
 	/** A flag for whether or not the CanvasNode is visible */
 	visible: boolean = true;
@@ -24,6 +26,8 @@ export default abstract class CanvasNode extends GameNode implements Region {
 		this._scale.setOnChange(() => this.scaleChanged());
 		this._boundary = new AABB();
 		this.updateBoundary();
+
+		this._hasCustomShader = false;
 	}
 
 	get size(): Vec2 {
@@ -56,6 +60,14 @@ export default abstract class CanvasNode extends GameNode implements Region {
 		this.scale.y = value;
 	}
 
+	get hasCustomShader(): boolean {
+		return this._hasCustomShader;
+	}
+
+	get customShaderKey(): string {
+		return this._customShaderKey;
+	}
+
 	// @override
 	protected positionChanged(): void {
 		super.positionChanged();
@@ -89,6 +101,15 @@ export default abstract class CanvasNode extends GameNode implements Region {
 		return this.boundary.halfSize.clone().scaled(zoom, zoom);
 	}
 
+	/**
+	 * Adds a custom shader to this CanvasNode
+	 * @param key The registry key of the ShaderType
+	 */
+	useCustomShader(key: string): void {
+		this._hasCustomShader = true;
+		this._customShaderKey = key;
+	}
+
 	/**
 	 * Returns true if the point (x, y) is inside of this canvas object
 	 * @param x The x position of the point

src/Wolfie2D/Nodes/GameNode.ts

@@ -176,6 +176,7 @@ export default abstract class GameNode implements Positioned, Unique, Updateable
 		// Set the collision shape if provided, or simply use the the region if there is one.
 		if(collisionShape){
 			this.collisionShape = collisionShape;
+			this.collisionShape.center = this.position;
 		} else if (isRegion(this)) {
 			// If the gamenode has a region and no other is specified, use that
 			this.collisionShape = (<any>this).boundary.clone();

src/Wolfie2D/Nodes/Sprites/AnimatedSprite.ts

@@ -8,9 +8,17 @@ export default class AnimatedSprite extends Sprite {
     /** The number of columns in this sprite sheet */
     protected numCols: number;
 
+    get cols(): number {
+        return this.numCols;
+    }
+
     /** The number of rows in this sprite sheet */
     protected numRows: number;
 
+    get rows(): number {
+        return this.numRows;
+    }
+
     /** The animationManager for this sprite */
     animation: AnimationManager;
 

src/Wolfie2D/Registry/Registries/ShaderRegistry.ts

@@ -0,0 +1,98 @@
+import Map from "../../DataTypes/Map";
+import ShaderType from "../../Rendering/WebGLRendering/ShaderType";
+import PointShaderType from "../../Rendering/WebGLRendering/ShaderTypes/PointShaderType";
+import RectShaderType from "../../Rendering/WebGLRendering/ShaderTypes/RectShaderType";
+import SpriteShaderType from "../../Rendering/WebGLRendering/ShaderTypes/SpriteShaderType";
+import ResourceManager from "../../ResourceManager/ResourceManager";
+
+/**
+ * A registry that handles shaders
+ */
+export default class ShaderRegistry extends Map<ShaderType> {
+
+	// Shader names
+	public static POINT_SHADER = "point";
+	public static RECT_SHADER = "rect";
+	public static SPRITE_SHADER = "sprite";
+
+	private registryItems: Array<ShaderRegistryItem> = new Array();
+
+	/**
+	 * Preloads all built-in shaders
+	 */
+	public preload(){
+		console.log("Preloading");
+
+		// Get the resourceManager and queue all built-in shaders for preloading
+		const rm = ResourceManager.getInstance();
+
+		// Queue a load for the point shader
+		this.registerAndPreloadItem(ShaderRegistry.POINT_SHADER, PointShaderType, "builtin/shaders/point.vshader", "builtin/shaders/point.fshader");
+
+		// Queue a load for the rect shader
+		this.registerAndPreloadItem(ShaderRegistry.RECT_SHADER, RectShaderType, "builtin/shaders/rect.vshader", "builtin/shaders/rect.fshader");
+
+		// Queue a load for the sprite shader
+		this.registerAndPreloadItem(ShaderRegistry.SPRITE_SHADER, SpriteShaderType, "builtin/shaders/sprite.vshader", "builtin/shaders/sprite.fshader");
+	
+		// Queue a load for any preloaded items
+		for(let item of this.registryItems){
+			const shader = new item.constr(item.key);
+			shader.initBufferObject();
+			this.add(item.key, shader);
+
+			console.log("Added", item.key);
+
+			// Load if desired
+			if(item.preload !== undefined){
+				console.log("Preloading", item.key);
+				rm.shader(item.key, item.preload.vshaderLocation, item.preload.fshaderLocation);
+			}
+		}
+	}
+
+	/**
+	 * Registers a shader in the registry and loads it before the game begins
+	 * @param key The key you wish to assign to the shader
+	 * @param constr The constructor of the ShaderType
+	 * @param vshaderLocation The location of the vertex shader
+	 * @param fshaderLocation the location of the fragment shader
+	 */
+	public registerAndPreloadItem(key: string, constr: new (programKey: string) => ShaderType, vshaderLocation: string, fshaderLocation: string): void {
+		let shaderPreload = new ShaderPreload();
+		shaderPreload.vshaderLocation = vshaderLocation;
+		shaderPreload.fshaderLocation = fshaderLocation;
+
+		let registryItem = new ShaderRegistryItem();
+		registryItem.key = key;
+		registryItem.constr = constr;
+		registryItem.preload = shaderPreload;
+
+		this.registryItems.push(registryItem);
+	}
+
+	/**
+	 * Registers a shader in the registry. NOTE: If you use this, you MUST load the shader before use.
+	 * If you wish to preload the shader, use registerAndPreloadItem()
+	 * @param key The key you wish to assign to the shader
+	 * @param constr The constructor of the ShaderType
+	 */
+	public registerItem(key: string, constr: new (programKey: string) => ShaderType): void {
+		let registryItem = new ShaderRegistryItem();
+		registryItem.key = key;
+		registryItem.constr = constr;
+
+		this.registryItems.push(registryItem);
+	}
+}
+
+class ShaderRegistryItem {
+	key: string;
+	constr: new (programKey: string) => ShaderType;
+	preload: ShaderPreload;
+}
+
+class ShaderPreload {
+	vshaderLocation: string;
+	fshaderLocation: string;
+}

src/Wolfie2D/Registry/Registry.ts

@@ -0,0 +1,16 @@
+import ShaderRegistry from "./Registries/ShaderRegistry";
+
+/**
+ * The Registry is the system's way of converting classes and types into string
+ * representations for use elsewhere in the application.
+ * It allows classes to be accessed without explicitly using constructors in code,
+ * and for resources to be loaded at Game creation time.
+ */
+export default class Registry {
+
+	public static shaders = new ShaderRegistry();
+
+	static preload(){
+		this.shaders.preload();
+	}
+}

src/Wolfie2D/Rendering/Animations/AnimationManager.ts

@@ -85,6 +85,15 @@ export default class AnimationManager {
         }
     }
 
+    /**
+     * Determines whether the specified animation is currently playing
+     * @param key The key of the animation to check
+     * @returns true if the specified animation is playing, false otherwise
+     */
+    isPlaying(key: string): boolean {
+        return this.currentAnimation === key && this.animationState === AnimationState.PLAYING;
+    }
+
     /**
      * Retrieves the current animation index and advances the animation frame
      * @returns The index of the animation frame
@@ -147,7 +156,7 @@ export default class AnimationManager {
      * @param loop Whether or not to loop the animation. False by default
      * @param onEnd The name of an event to send when this animation naturally stops playing. This only matters if loop is false.
      */
-    playIfNotAlready(animation: string, loop: boolean = false, onEnd?: string): void {
+    playIfNotAlready(animation: string, loop?: boolean, onEnd?: string): void {
         if(this.currentAnimation !== animation){
             this.play(animation, loop, onEnd);
         }
@@ -159,18 +168,27 @@ export default class AnimationManager {
      * @param loop Whether or not to loop the animation. False by default
      * @param onEnd The name of an event to send when this animation naturally stops playing. This only matters if loop is false.
      */
-    play(animation: string, loop: boolean = false, onEnd?: string): void {
+    play(animation: string, loop?: boolean, onEnd?: string): void {
         this.currentAnimation = animation;
         this.currentFrame = 0;
         this.frameProgress = 0;
-        this.loop = loop;
         this.animationState = AnimationState.PLAYING;
+
+        // If loop arg was provided, use that
+        if(loop !== undefined){
+            this.loop = loop;
+        } else {
+            // Otherwise, use what the json file specified
+            this.loop = this.animations.get(animation).repeat;
+        }
+
         if(onEnd !== undefined){
             this.onEndEvent = onEnd;
         } else {
             this.onEndEvent = null;
         }
 
+        // Reset pending animation
         this.pendingAnimation = null;
     }
 

src/Wolfie2D/Rendering/Animations/AnimationTypes.ts

@@ -12,6 +12,7 @@ export enum AnimationState {
 export class AnimationData {
     name: string;
     frames: Array<{index: number, duration: number}>;
+    repeat: boolean = false;
 }
 
 export class TweenData {

src/Wolfie2D/Rendering/CanvasRenderer.ts

@@ -131,7 +131,7 @@ export default class CanvasRenderer extends RenderingManager {
         }
 
         this.ctx.setTransform(xScale, 0, 0, yScale, (node.position.x - this.origin.x)*this.zoom, (node.position.y - this.origin.y)*this.zoom);
-        this.ctx.rotate(node.rotation);
+        this.ctx.rotate(-node.rotation);
         let globalAlpha = this.ctx.globalAlpha;
         this.ctx.globalAlpha = node.alpha;
         

src/Wolfie2D/Rendering/WebGLRenderer.ts

@@ -0,0 +1,136 @@
+import Graph from "../DataTypes/Graphs/Graph";
+import Map from "../DataTypes/Map";
+import Vec2 from "../DataTypes/Vec2";
+import CanvasNode from "../Nodes/CanvasNode";
+import Graphic from "../Nodes/Graphic";
+import { GraphicType } from "../Nodes/Graphics/GraphicTypes";
+import Point from "../Nodes/Graphics/Point";
+import Rect from "../Nodes/Graphics/Rect";
+import AnimatedSprite from "../Nodes/Sprites/AnimatedSprite";
+import Sprite from "../Nodes/Sprites/Sprite";
+import Tilemap from "../Nodes/Tilemap";
+import UIElement from "../Nodes/UIElement";
+import ShaderRegistry from "../Registry/Registries/ShaderRegistry";
+import Registry from "../Registry/Registry";
+import ResourceManager from "../ResourceManager/ResourceManager";
+import UILayer from "../Scene/Layers/UILayer";
+import RenderingUtils from "../Utils/RenderingUtils";
+import RenderingManager from "./RenderingManager";
+import ShaderType from "./WebGLRendering/ShaderType";
+
+export default class WebGLRenderer extends RenderingManager {
+
+	protected origin: Vec2;
+	protected zoom: number;
+	protected worldSize: Vec2;
+
+	protected gl: WebGLRenderingContext;
+
+	initializeCanvas(canvas: HTMLCanvasElement, width: number, height: number): WebGLRenderingContext {
+		canvas.width = width;
+        canvas.height = height;
+
+		this.worldSize = Vec2.ZERO;
+		this.worldSize.x = width;
+		this.worldSize.y = height;
+
+		// Get the WebGL context
+        this.gl = canvas.getContext("webgl");
+
+		this.gl.viewport(0, 0, canvas.width, canvas.height);
+
+		this.gl.disable(this.gl.DEPTH_TEST);
+        this.gl.enable(this.gl.BLEND);
+        this.gl.blendFunc(this.gl.SRC_ALPHA, this.gl.ONE_MINUS_SRC_ALPHA);
+        this.gl.enable(this.gl.CULL_FACE);
+
+		// Tell the resource manager we're using WebGL
+		ResourceManager.getInstance().useWebGL(true, this.gl);
+
+        return this.gl;
+	}
+
+	render(visibleSet: CanvasNode[], tilemaps: Tilemap[], uiLayers: Map<UILayer>): void {
+		for(let node of visibleSet){
+			this.renderNode(node);
+		}
+	}
+
+	protected renderNode(node: CanvasNode): void {
+		// Calculate the origin of the viewport according to this sprite
+        this.origin = this.scene.getViewTranslation(node);
+
+        // Get the zoom level of the scene
+        this.zoom = this.scene.getViewScale();
+		
+		if(node.hasCustomShader){
+			// If the node has a custom shader, render using that
+			this.renderCustom(node);
+		} else if(node instanceof Graphic){
+			this.renderGraphic(node);
+		} else if(node instanceof Sprite){
+			if(node instanceof AnimatedSprite){
+				this.renderAnimatedSprite(node);
+			} else {
+				this.renderSprite(node);
+			}
+		}
+	}
+
+	protected renderSprite(sprite: Sprite): void {
+		let shader = Registry.shaders.get(ShaderRegistry.SPRITE_SHADER);
+
+		let options = shader.getOptions(sprite);
+		options.worldSize = this.worldSize;
+		options.origin = this.origin;
+
+		shader.render(this.gl, options);
+	}
+
+	protected renderAnimatedSprite(sprite: AnimatedSprite): void {
+		let shader = Registry.shaders.get(ShaderRegistry.SPRITE_SHADER);
+
+		let options = shader.getOptions(sprite);
+		options.worldSize = this.worldSize;
+		options.origin = this.origin;
+
+		Registry.shaders.get(ShaderRegistry.SPRITE_SHADER).render(this.gl, options);
+	}
+
+	protected renderGraphic(graphic: Graphic): void {
+
+		if(graphic instanceof Point){
+			let shader = Registry.shaders.get(ShaderRegistry.POINT_SHADER);
+			let options = shader.getOptions(graphic);
+			options.worldSize = this.worldSize;
+			options.origin = this.origin;
+
+			shader.render(this.gl, options);
+		} else if(graphic instanceof Rect) {
+			let shader = Registry.shaders.get(ShaderRegistry.RECT_SHADER);
+			let options = shader.getOptions(graphic);
+			options.worldSize = this.worldSize;
+			options.origin = this.origin;
+			
+			shader.render(this.gl, options);
+		} 
+	}
+
+	protected renderTilemap(tilemap: Tilemap): void {
+		throw new Error("Method not implemented.");
+	}
+
+	protected renderUIElement(uiElement: UIElement): void {
+		throw new Error("Method not implemented.");
+	}
+
+	protected renderCustom(node: CanvasNode): void {
+		let shader = Registry.shaders.get(node.customShaderKey);
+		let options = shader.getOptions(node);
+		options.worldSize = this.worldSize;
+		options.origin = this.origin;
+
+		shader.render(this.gl, options);
+	}
+
+}

src/Wolfie2D/Rendering/WebGLRendering/ShaderType.ts

@@ -0,0 +1,44 @@
+import Map from "../../DataTypes/Map";
+import CanvasNode from "../../Nodes/CanvasNode";
+import ResourceManager from "../../ResourceManager/ResourceManager";
+
+/**
+ * A wrapper class for WebGL shaders.
+ * This class is a singleton, and there is only one for each shader type.
+ * All objects that use this shader type will refer to and modify this same type.
+ */
+export default abstract class ShaderType {
+	/** The name of this shader */
+	protected name: string;
+
+	/** The key to the WebGLProgram in the ResourceManager */
+	protected programKey: string;
+
+	/** A reference to the resource manager */
+	protected resourceManager: ResourceManager;
+
+	constructor(programKey: string){
+		this.programKey = programKey;
+		this.resourceManager = ResourceManager.getInstance();
+	}
+
+	/**
+	 * Initializes any buffer objects associated with this shader type.
+	 * @param gl The WebGL rendering context
+	 */
+	abstract initBufferObject(): void;
+
+	/**
+	 * Loads any uniforms
+	 * @param gl The WebGL rendering context
+	 * @param options Information about the object we're currently rendering
+	 */
+	abstract render(gl: WebGLRenderingContext, options: Record<string, any>): void;
+
+	/**
+	 * Extracts the options from the CanvasNode and gives them to the render function
+	 * @param node The node to get options from
+	 * @returns An object containing the options that should be passed to the render function
+	 */
+	getOptions(node: CanvasNode): Record<string, any> {return {};}
+}

src/Wolfie2D/Rendering/WebGLRendering/ShaderTypes/PointShaderType.ts

@@ -0,0 +1,61 @@
+import Debug from "../../../Debug/Debug";
+import Point from "../../../Nodes/Graphics/Point";
+import ResourceManager from "../../../ResourceManager/ResourceManager";
+import RenderingUtils from "../../../Utils/RenderingUtils";
+import ShaderType from "../ShaderType";
+
+export default class PointShaderType extends ShaderType {
+
+	protected bufferObjectKey: string;
+
+	constructor(programKey: string){
+		super(programKey);
+	}
+
+	initBufferObject(): void {
+		this.bufferObjectKey = "point";
+		this.resourceManager.createBuffer(this.bufferObjectKey);
+	}
+
+	render(gl: WebGLRenderingContext, options: Record<string, any>): void {
+		let position = RenderingUtils.toWebGLCoords(options.position, options.origin, options.worldSize);
+		let color = RenderingUtils.toWebGLColor(options.color);
+
+		const program = this.resourceManager.getShaderProgram(this.programKey);
+		const buffer = this.resourceManager.getBuffer(this.bufferObjectKey);
+
+		gl.useProgram(program);
+
+		const vertexData = position;
+
+		const FSIZE = vertexData.BYTES_PER_ELEMENT;
+
+		// Bind the buffer
+		gl.bindBuffer(gl.ARRAY_BUFFER, buffer);
+		gl.bufferData(gl.ARRAY_BUFFER, vertexData, gl.STATIC_DRAW);
+
+		// Attributes
+		const a_Position = gl.getAttribLocation(program, "a_Position");
+		gl.vertexAttribPointer(a_Position, 2, gl.FLOAT, false, 2 * FSIZE, 0 * FSIZE);
+		gl.enableVertexAttribArray(a_Position);
+
+		// Uniforms
+		const u_Color = gl.getUniformLocation(program, "u_Color");
+		gl.uniform4fv(u_Color, color);
+
+		const u_PointSize = gl.getUniformLocation(program, "u_PointSize");
+		gl.uniform1f(u_PointSize, options.pointSize);
+
+		gl.drawArrays(gl.POINTS, 0, 1);
+	}
+
+	getOptions(point: Point): Record<string, any> {
+		let options: Record<string, any> = {
+			position: point.position,
+			color: point.color,
+			pointSize: point.size,
+		}
+
+		return options;
+	}
+}

src/Wolfie2D/Rendering/WebGLRendering/ShaderTypes/QuadShaderType.ts

@@ -0,0 +1,25 @@
+import Mat4x4 from "../../../DataTypes/Mat4x4";
+import ShaderType from "../ShaderType";
+
+/** Represents any WebGL objects that have a quad mesh (i.e. a rectangular game object composed of only two triangles) */
+export default abstract class QuadShaderType extends ShaderType {
+	/** The key to the buffer object for this shader */
+	protected bufferObjectKey: string;
+
+	/** The scale matric */
+	protected scale: Mat4x4;
+
+	/** The rotation matrix */
+	protected rotation: Mat4x4;
+
+	/** The translation matrix */
+	protected translation: Mat4x4;
+
+	constructor(programKey: string){
+		super(programKey);
+
+		this.scale = Mat4x4.IDENTITY;
+		this.rotation = Mat4x4.IDENTITY;
+		this.translation = Mat4x4.IDENTITY;
+	}
+}

src/Wolfie2D/Rendering/WebGLRendering/ShaderTypes/RectShaderType.ts

@@ -0,0 +1,133 @@
+import Mat4x4 from "../../../DataTypes/Mat4x4";
+import Vec2 from "../../../DataTypes/Vec2";
+import Rect from "../../../Nodes/Graphics/Rect";
+import ResourceManager from "../../../ResourceManager/ResourceManager";
+import QuadShaderType from "./QuadShaderType";
+
+export default class RectShaderType extends QuadShaderType {
+
+	constructor(programKey: string){
+		super(programKey);
+		this.resourceManager = ResourceManager.getInstance();
+	}
+
+	initBufferObject(): void {
+		this.bufferObjectKey = "rect";
+		this.resourceManager.createBuffer(this.bufferObjectKey);
+	}
+
+	render(gl: WebGLRenderingContext, options: Record<string, any>): void {
+		const color = options.color.toWebGL();
+
+		const program = this.resourceManager.getShaderProgram(this.programKey);
+		const buffer = this.resourceManager.getBuffer(this.bufferObjectKey);
+
+		gl.useProgram(program);
+
+		const vertexData = this.getVertices(options.size.x, options.size.y);
+
+		const FSIZE = vertexData.BYTES_PER_ELEMENT;
+
+		// Bind the buffer
+		gl.bindBuffer(gl.ARRAY_BUFFER, buffer);
+		gl.bufferData(gl.ARRAY_BUFFER, vertexData, gl.STATIC_DRAW);
+
+		// Attributes
+		const a_Position = gl.getAttribLocation(program, "a_Position");
+		gl.vertexAttribPointer(a_Position, 2, gl.FLOAT, false, 2 * FSIZE, 0 * FSIZE);
+		gl.enableVertexAttribArray(a_Position);
+
+		// Uniforms
+		const u_Color = gl.getUniformLocation(program, "u_Color");
+		gl.uniform4fv(u_Color, color);
+
+		// Get transformation matrix
+		// We want a square for our rendering space, so get the maximum dimension of our quad
+		let maxDimension = Math.max(options.size.x, options.size.y);
+
+		// The size of the rendering space will be a square with this maximum dimension
+		let size = new Vec2(maxDimension, maxDimension).scale(2/options.worldSize.x, 2/options.worldSize.y);
+
+		// Center our translations around (0, 0)
+		const translateX = (options.position.x - options.origin.x - options.worldSize.x/2)/maxDimension;
+		const translateY = -(options.position.y - options.origin.y - options.worldSize.y/2)/maxDimension;
+
+		// Create our transformation matrix
+		this.translation.translate(new Float32Array([translateX, translateY]));
+		this.scale.scale(size);
+		this.rotation.rotate(options.rotation);
+		let transformation = Mat4x4.MULT(this.translation, this.scale, this.rotation);
+
+		// Pass the translation matrix to our shader
+		const u_Transform = gl.getUniformLocation(program, "u_Transform");
+		gl.uniformMatrix4fv(u_Transform, false, transformation.toArray());
+
+		// Draw the quad
+		gl.drawArrays(gl.TRIANGLE_STRIP, 0, 4);
+	}
+
+
+	/*
+		So as it turns out, WebGL has an issue with non-square quads.
+		It doesn't like when you don't have a 1-1 scale, and rotations are entirely messed up if this is not the case.
+		To solve this, I used the scale of the LARGEST dimension of the quad to make a square, then adjusted the vertex coordinates inside of that.
+		A diagram of the solution follows.
+
+		There is a bounding square for the quad with dimensions hxh (in this case, since height is the largest dimension).
+		The offset in the vertical direction is therefore 0.5, as it is normally.
+		However, the offset in the horizontal direction is not so straightforward, but isn't conceptually hard.
+		All we really have to do is a range change from [0, height/2] to [0, 0.5], where our value is t = width/2, and 0 <= t <= height/2.
+
+		So now we have our rect, in a space scaled with respect to the largest dimension.
+		Rotations work as you would expect, even for long rectangles.
+
+					0.5
+			__ __ __ __ __ __ __
+			|	|88888888888|	|
+			|	|88888888888|	|
+			|	|88888888888|	|
+		-0.5|_ _|88888888888|_ _|0.5
+			|	|88888888888|	|
+			|	|88888888888|	|
+			|	|88888888888|	|
+	  		|___|88888888888|___|
+			  		-0.5
+
+		The getVertices function below does as described, and converts the range
+	*/
+	/**
+	 * The rendering space always has to be a square, so make sure its square w.r.t to the largest dimension
+	 * @param w The width of the quad in pixels
+	 * @param h The height of the quad in pixels
+	 * @returns An array of the vertices of the quad
+	 */
+	getVertices(w: number, h: number): Float32Array {
+		let x, y;
+
+		if(h > w){
+			y = 0.5;
+			x = w/(2*h);
+		} else {
+			x = 0.5;
+			y = h/(2*w);
+		}
+
+		return new Float32Array([
+			-x,  y,
+			-x, -y,
+			 x,  y,
+			 x, -y
+		]);
+	}
+
+	getOptions(rect: Rect): Record<string, any> {
+		let options: Record<string, any> = {
+			position: rect.position,
+			color: rect.color,
+			size: rect.size,
+			rotation: rect.rotation
+		}
+
+		return options;
+	}
+}

src/Wolfie2D/Rendering/WebGLRendering/ShaderTypes/SpriteShaderType.ts

@@ -0,0 +1,153 @@
+import Mat4x4 from "../../../DataTypes/Mat4x4";
+import Vec2 from "../../../DataTypes/Vec2";
+import Debug from "../../../Debug/Debug";
+import AnimatedSprite from "../../../Nodes/Sprites/AnimatedSprite";
+import Sprite from "../../../Nodes/Sprites/Sprite";
+import ResourceManager from "../../../ResourceManager/ResourceManager";
+import QuadShaderType from "./QuadShaderType";
+
+/** A shader for sprites and animated sprites */
+export default class SpriteShaderType extends QuadShaderType {
+	constructor(programKey: string){
+		super(programKey);
+		this.resourceManager = ResourceManager.getInstance();
+	}
+
+	initBufferObject(): void {
+		this.bufferObjectKey = "sprite";
+		this.resourceManager.createBuffer(this.bufferObjectKey);
+	}
+
+	render(gl: WebGLRenderingContext, options: Record<string, any>): void {
+		const program = this.resourceManager.getShaderProgram(this.programKey);
+		const buffer = this.resourceManager.getBuffer(this.bufferObjectKey);
+		const texture = this.resourceManager.getTexture(options.imageKey);
+		const image = this.resourceManager.getImage(options.imageKey);
+
+		gl.useProgram(program);
+
+		// Enable texture0
+		gl.activeTexture(gl.TEXTURE0);
+
+		// Bind our texture to texture 0
+		gl.bindTexture(gl.TEXTURE_2D, texture);
+
+		// Set the texture parameters
+		gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
+		gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
+		gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
+
+		// Set the texture image
+		gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, image);
+
+		const vertexData = this.getVertices(options.size.x, options.size.y, options.scale);
+
+		const FSIZE = vertexData.BYTES_PER_ELEMENT;
+
+		// Bind the buffer
+		gl.bindBuffer(gl.ARRAY_BUFFER, buffer);
+		gl.bufferData(gl.ARRAY_BUFFER, vertexData, gl.STATIC_DRAW);
+
+		// Attributes
+		const a_Position = gl.getAttribLocation(program, "a_Position");
+		gl.vertexAttribPointer(a_Position, 2, gl.FLOAT, false, 4 * FSIZE, 0 * FSIZE);
+		gl.enableVertexAttribArray(a_Position);
+
+		const a_TexCoord = gl.getAttribLocation(program, "a_TexCoord");
+		gl.vertexAttribPointer(a_TexCoord, 2, gl.FLOAT, false, 4 * FSIZE, 2*FSIZE);
+		gl.enableVertexAttribArray(a_TexCoord);
+
+		// Uniforms
+		// Get transformation matrix
+		// We want a square for our rendering space, so get the maximum dimension of our quad
+		let maxDimension = Math.max(options.size.x, options.size.y);
+
+		// The size of the rendering space will be a square with this maximum dimension
+		let size = new Vec2(maxDimension, maxDimension).scale(2/options.worldSize.x, 2/options.worldSize.y);
+
+		// Center our translations around (0, 0)
+		const translateX = (options.position.x - options.origin.x - options.worldSize.x/2)/maxDimension;
+		const translateY = -(options.position.y - options.origin.y - options.worldSize.y/2)/maxDimension;
+
+		// Create our transformation matrix
+		this.translation.translate(new Float32Array([translateX, translateY]));
+		this.scale.scale(size);
+		this.rotation.rotate(options.rotation);
+		let transformation = Mat4x4.MULT(this.translation, this.scale, this.rotation);
+
+		// Pass the translation matrix to our shader
+		const u_Transform = gl.getUniformLocation(program, "u_Transform");
+		gl.uniformMatrix4fv(u_Transform, false, transformation.toArray());
+
+		// Set texture unit 0 to the sampler
+		const u_Sampler = gl.getUniformLocation(program, "u_Sampler");
+		gl.uniform1i(u_Sampler, 0);
+
+		// Pass in texShift
+		const u_texShift = gl.getUniformLocation(program, "u_texShift");
+		gl.uniform2fv(u_texShift, options.texShift);
+
+		// Pass in texScale
+		const u_texScale = gl.getUniformLocation(program, "u_texScale");
+		gl.uniform2fv(u_texScale, options.texScale);
+
+		// Draw the quad
+		gl.drawArrays(gl.TRIANGLE_STRIP, 0, 4 );
+	}
+
+	/**
+	 * The rendering space always has to be a square, so make sure its square w.r.t to the largest dimension
+	 * @param w The width of the quad in pixels
+	 * @param h The height of the quad in pixels
+	 * @returns An array of the vertices of the quad
+	 */
+	getVertices(w: number, h: number, scale: Float32Array): Float32Array {
+		let x, y;
+
+		if(h > w){
+			y = 0.5;
+			x = w/(2*h);
+		} else {
+			x = 0.5;
+			y = h/(2*w);
+		}
+
+		// Scale the rendering space if needed
+		x *= scale[0];
+		y *= scale[1];
+
+		return new Float32Array([
+			-x,  y, 0.0, 0.0,
+			-x, -y, 0.0, 1.0,
+			 x,  y, 1.0, 0.0,
+			 x, -y, 1.0, 1.0
+		]);
+	}
+
+	getOptions(sprite: Sprite): Record<string, any> {
+		let texShift;
+		let texScale;
+
+		if(sprite instanceof AnimatedSprite){
+			let animationIndex = sprite.animation.getIndexAndAdvanceAnimation();
+			let offset = sprite.getAnimationOffset(animationIndex);
+			texShift = new Float32Array([offset.x / (sprite.cols * sprite.size.x), offset.y / (sprite.rows * sprite.size.y)]);
+			texScale = new Float32Array([1/(sprite.cols), 1/(sprite.rows)]);
+		} else {
+			texShift = new Float32Array([0, 0]);
+			texScale = new Float32Array([1, 1]);
+		}
+
+		let options: Record<string, any> = {
+			position: sprite.position,
+			rotation: sprite.rotation,
+			size: sprite.size,
+			scale: sprite.scale.toArray(),
+			imageKey: sprite.imageId,
+			texShift,
+			texScale
+		}
+
+		return options;
+	}
+}

src/Wolfie2D/ResourceManager/ResourceManager.ts

@@ -4,6 +4,8 @@ import { TiledTilemapData } from "../DataTypes/Tilesets/TiledData";
 import StringUtils from "../Utils/StringUtils";
 import AudioManager from "../Sound/AudioManager";
 import Spritesheet from "../DataTypes/Spritesheet";
+import WebGLProgramType from "../DataTypes/Rendering/WebGLProgramType";
+import PhysicsManager from "../Physics/PhysicsManager";
 
 /**
  * The resource manager for the game engine.
@@ -68,6 +70,21 @@ export default class ResourceManager {
     /** The total number of "types" of things that need to be loaded (i.e. images and tilemaps) */
     private loadonly_typesToLoad: number;
 
+    /* ########## INFORMATION SPECIAL TO WEBGL ########## */
+    private gl_WebGLActive: boolean;
+
+    private loadonly_gl_ShaderProgramsLoaded: number;
+    private loadonly_gl_ShaderProgramsToLoad: number;
+    private loadonly_gl_ShaderLoadingQueue: Queue<KeyPath_Shader>;
+
+    private gl_DefaultShaderPrograms: Map<WebGLProgramType>;
+    private gl_ShaderPrograms: Map<WebGLProgramType>;
+
+    private gl_Textures: Map<WebGLTexture>;
+    private gl_Buffers: Map<WebGLBuffer>; 
+
+    private gl: WebGLRenderingContext;
+
     private constructor(){
         this.loading = false;
         this.justLoaded = false;
@@ -91,6 +108,16 @@ export default class ResourceManager {
         this.loadonly_audioToLoad = 0;
         this.loadonly_audioLoadingQueue = new Queue();
         this.audioBuffers = new Map();
+
+        this.loadonly_gl_ShaderProgramsLoaded = 0;
+        this.loadonly_gl_ShaderProgramsToLoad = 0;
+        this.loadonly_gl_ShaderLoadingQueue = new Queue();
+
+        this.gl_DefaultShaderPrograms = new Map();
+        this.gl_ShaderPrograms = new Map();
+
+        this.gl_Textures = new Map();
+        this.gl_Buffers = new Map();
     };
 
     /**
@@ -105,6 +132,19 @@ export default class ResourceManager {
         return this.instance;
     }
 
+    /**
+     * Activates or deactivates the use of WebGL
+     * @param flag True if WebGL should be used, false otherwise
+     * @param gl The instance of the graphics context, if applicable
+     */
+    public useWebGL(flag: boolean, gl: WebGLRenderingContext): void {
+        this.gl_WebGLActive = flag;
+
+        if(this.gl_WebGLActive){
+            this.gl = gl;
+        }
+    }
+
     /**
      * Loads an image from file
      * @param key The key to associate the loaded image with
@@ -199,15 +239,26 @@ export default class ResourceManager {
                     console.log("Loaded Images");
                     this.loadAudioFromQueue(() => {
                         console.log("Loaded Audio");
+
+                        if(this.gl_WebGLActive){
+                            this.gl_LoadShadersFromQueue(() => {
+                                console.log("Loaded Shaders");
+                                this.finishLoading(callback);
+                            });
+                        } else {
+                            this.finishLoading(callback);
+                        }
+                    });
+                });
+            });
+        });
+    }
+
+    private finishLoading(callback: Function): void {
         // Done loading
         this.loading = false;
         this.justLoaded = true;
         callback();
-                    });
-                });
-            });
-        });
-
     }
 
     /**
@@ -232,6 +283,12 @@ export default class ResourceManager {
         this.loadonly_audioLoaded = 0;
         this.loadonly_audioToLoad = 0;
         this.audioBuffers.clear();
+
+        // WebGL
+        // Delete all programs through webGL
+        this.gl_ShaderPrograms.forEach(key => this.gl_ShaderPrograms.get(key).delete(this.gl));
+        this.gl_ShaderPrograms.clear();
+        this.gl_Textures.clear();
     }
 
     /**
@@ -385,6 +442,9 @@ export default class ResourceManager {
             // Add to loaded images
             this.images.add(key, image);
 
+            // If WebGL is active, create a texture
+            this.createWebGLTexture(key);
+
             // Finish image load
             this.finishLoadingImage(callbackIfLast);
         }
@@ -464,6 +524,192 @@ export default class ResourceManager {
         }
     }
 
+    /* ########## WEBGL SPECIFIC FUNCTIONS ########## */
+
+    public getTexture(key: string): WebGLTexture {
+        return this.gl_Textures.get(key);
+    }
+
+    public getShaderProgram(key: string): WebGLProgram {
+        return this.gl_ShaderPrograms.get(key).program;
+    }
+
+    public getBuffer(key: string): WebGLBuffer {
+        return this.gl_Buffers.get(key);
+    }
+
+    private createWebGLTexture(key:string): void {
+        if(this.gl_WebGLActive){
+            const texture = this.gl.createTexture();
+            this.gl_Textures.add(key, texture);
+        }
+    }
+
+    public createBuffer(key: string): void {
+        if(this.gl_WebGLActive){
+            let buffer = this.gl.createBuffer();
+
+            this.gl_Buffers.add(key, buffer);
+        }
+    }
+
+    /**
+     * Enqueues loading of a new shader program
+     * @param key The key of the shader program
+     * @param vShaderFilepath 
+     * @param fShaderFilepath 
+     */
+    public shader(key: string, vShaderFilepath: string, fShaderFilepath: string): void {
+        let splitPath = vShaderFilepath.split(".");
+        let end = splitPath[splitPath.length - 1];
+
+        if(end !== "vshader"){
+            throw `${vShaderFilepath} is not a valid vertex shader - must end in ".vshader`;
+        }
+
+        splitPath = fShaderFilepath.split(".");
+        end = splitPath[splitPath.length - 1];
+
+        if(end !== "fshader"){
+            throw `${fShaderFilepath} is not a valid vertex shader - must end in ".fshader`;
+        }
+
+        let paths = new KeyPath_Shader();
+        paths.key = key;
+        paths.vpath = vShaderFilepath;
+        paths.fpath = fShaderFilepath;
+
+        this.loadonly_gl_ShaderLoadingQueue.enqueue(paths);
+    }
+
+    private gl_LoadShadersFromQueue(onFinishLoading: Function): void {
+        this.loadonly_gl_ShaderProgramsToLoad = this.loadonly_gl_ShaderLoadingQueue.getSize();
+        this.loadonly_gl_ShaderProgramsLoaded = 0;
+
+        // If webGL isn'active or there are no items to load, we're finished
+        if(!this.gl_WebGLActive || this.loadonly_gl_ShaderProgramsToLoad === 0){
+            onFinishLoading();
+        }
+
+        while(this.loadonly_gl_ShaderLoadingQueue.hasItems()){
+            let shader = this.loadonly_gl_ShaderLoadingQueue.dequeue();
+            this.gl_LoadShader(shader.key, shader.vpath, shader.fpath, onFinishLoading);
+        }
+    }
+
+    private gl_LoadShader(key: string, vpath: string, fpath: string, callbackIfLast: Function): void {
+        this.loadTextFile(vpath, (vFileText: string) => {
+            const vShader = vFileText;
+
+            this.loadTextFile(fpath, (fFileText: string) => {
+                const fShader = fFileText
+
+                // Extract the program and shaders
+                const [shaderProgram, vertexShader, fragmentShader] = this.createShaderProgram(vShader, fShader);
+
+                // Create a wrapper type
+                const programWrapper = new WebGLProgramType();
+                programWrapper.program = shaderProgram;
+                programWrapper.vertexShader = vertexShader;
+                programWrapper.fragmentShader = fragmentShader;
+
+                // Add to our map
+                this.gl_ShaderPrograms.add(key, programWrapper);
+
+                // Finish loading
+                this.gl_FinishLoadingShader(callbackIfLast);
+            });
+        });
+    }
+
+    private gl_FinishLoadingShader(callback: Function): void {
+        this.loadonly_gl_ShaderProgramsLoaded += 1;
+
+        if(this.loadonly_gl_ShaderProgramsLoaded === this.loadonly_gl_ShaderProgramsToLoad){
+            // We're done loading shaders
+            callback();
+        }
+    }
+
+    private createShaderProgram(vShaderSource: string, fShaderSource: string){
+        const vertexShader = this.loadVertexShader(vShaderSource);
+        const fragmentShader = this.loadFragmentShader(fShaderSource);
+    
+        if(vertexShader === null || fragmentShader === null){
+            // We had a problem intializing - error
+            return null;
+        }
+    
+        // Create a shader program
+        const program = this.gl.createProgram();
+        if(!program) {
+            // Error creating
+            console.log("Failed to create program");
+            return null;
+        }
+    
+        // Attach our vertex and fragment shader
+        this.gl.attachShader(program, vertexShader);
+        this.gl.attachShader(program, fragmentShader);
+    
+        // Link
+        this.gl.linkProgram(program);
+        if(!this.gl.getProgramParameter(program, this.gl.LINK_STATUS)){
+            // Error linking
+            const error = this.gl.getProgramInfoLog(program);
+            console.log("Failed to link program: " + error);
+    
+            // Clean up
+            this.gl.deleteProgram(program);
+            this.gl.deleteShader(vertexShader);
+            this.gl.deleteShader(fragmentShader);
+            return null;
+        }
+    
+        // We successfully create a program
+        return [program, vertexShader, fragmentShader];
+    }
+    
+    private loadVertexShader(shaderSource: string): WebGLShader{
+        // Create a new vertex shader
+        return this.loadShader(this.gl.VERTEX_SHADER, shaderSource);
+    }
+    
+    private loadFragmentShader(shaderSource: string): WebGLShader{
+        // Create a new fragment shader
+        return this.loadShader(this.gl.FRAGMENT_SHADER, shaderSource);	
+    }
+    
+    private loadShader(type: number, shaderSource: string): WebGLShader{
+        const shader = this.gl.createShader(type);
+    
+        // If we couldn't create the shader, error
+        if(shader === null){
+            console.log("Unable to create shader");
+            return null;
+        }
+    
+        // Add the source to the shader and compile
+        this.gl.shaderSource(shader, shaderSource);
+        this.gl.compileShader(shader);
+    
+        // Make sure there were no errors during this process
+        if(!this.gl.getShaderParameter(shader, this.gl.COMPILE_STATUS)){
+            // Not compiled - error
+            const error = this.gl.getShaderInfoLog(shader);
+            console.log("Failed to compile shader: " + error);
+    
+            // Clean up
+            this.gl.deleteShader(shader);
+            return null;
+        }
+    
+        // Sucess, so return the shader
+        return shader;
+    }
+
+    /* ########## GENERAL LOADING FUNCTIONS ########## */
+
     private loadTextFile(textFilePath: string, callback: Function): void {
         let xobj: XMLHttpRequest = new XMLHttpRequest();
         xobj.overrideMimeType("application/json");
@@ -476,6 +722,8 @@ export default class ResourceManager {
         xobj.send(null);
     }
 
+    /* ########## LOADING BAR INFO ########## */
+
     private getLoadPercent(): number {
         return (this.loadonly_tilemapsLoaded/this.loadonly_tilemapsToLoad
             + this.loadonly_spritesheetsLoaded/this.loadonly_spritesheetsToLoad
@@ -499,6 +747,12 @@ export default class ResourceManager {
 }
 
 class KeyPathPair {
-    key: string
+    key: string;
-    path: string
+    path: string;
+}
+
+class KeyPath_Shader {
+    key: string;
+    vpath: string;
+    fpath: string;
 }

src/Wolfie2D/Scene/SceneManager.ts

@@ -88,8 +88,10 @@ export default class SceneManager {
 	 * Renders the current Scene
 	 */
 	public render(): void {
+		if(this.currentScene.isRunning()){
 			this.currentScene.render();
 		}
+	}
 
 	/**
 	 * Updates the current Scene

src/Wolfie2D/SceneGraph/SceneGraphArray.ts

@@ -83,7 +83,7 @@ export default class SceneGraphArray extends SceneGraph {
         let visibleSet = new Array<CanvasNode>();
 
         for(let node of this.nodeList){
-            if(!node.getLayer().isHidden() && this.viewport.includes(node)){
+            if(!node.getLayer().isHidden() && node.visible && this.viewport.includes(node)){
                 visibleSet.push(node);
             }
         }

src/Wolfie2D/Utils/Color.ts

@@ -138,6 +138,14 @@ export default class Color {
 		return new Color(MathUtils.clamp(this.r - 40, 0, 255), MathUtils.clamp(this.g - 40, 0, 255), MathUtils.clamp(this.b - 40, 0, 255), this.a);
 	}
 	
+	/**
+	 * Returns this color as an array
+	 * @returns [r, g, b, a]
+	 */
+	toArray(): [number, number, number, number] {
+		return [this.r, this.g, this.b, this.a];
+	}
+	
 	/**
 	 * Returns the color as a string of the form #RRGGBB
 	 * @returns #RRGGBB
@@ -164,4 +172,17 @@ export default class Color {
 		}
 		return "rgba(" + this.r.toString() + ", " + this.g.toString() + ", " + this.b.toString() + ", " + this.a.toString() +")"
 	}
+
+	/**
+	 * Turns this color into a float32Array and changes color range to [0.0, 1.0]
+	 * @returns a Float32Array containing the color
+	 */
+	toWebGL(): Float32Array {
+		return new Float32Array([
+			this.r/255,
+			this.g/255,
+			this.b/255,
+			this.a
+		]);
+	}
 }

src/Wolfie2D/Utils/MathUtils.ts

@@ -57,6 +57,10 @@ export default class MathUtils {
         }
     }
 
+    static changeRange(x: number, min: number, max: number, newMin: number, newMax: number): number {
+        return this.lerp(newMin, newMax, this.invLerp(min, max, x));
+    }
+
     /**
 	 * Linear Interpolation
 	 * @param a The first value for the interpolation bound

src/Wolfie2D/Utils/RenderingUtils.ts

@@ -0,0 +1,28 @@
+import Vec2 from "../DataTypes/Vec2";
+import Color from "./Color";
+import MathUtils from "./MathUtils";
+
+export default class RenderingUtils {
+	static toWebGLCoords(point: Vec2, origin: Vec2, worldSize: Vec2): Float32Array {
+		return new Float32Array([
+			MathUtils.changeRange(point.x, origin.x, origin.x + worldSize.x, -1, 1),
+			MathUtils.changeRange(point.y, origin.y, origin.y + worldSize.y, 1, -1)
+		]);
+	}
+
+	static toWebGLScale(size: Vec2, worldSize: Vec2): Float32Array {
+		return new Float32Array([
+			2*size.x/worldSize.x,
+			2*size.y/worldSize.y,
+		]);
+	}
+
+	static toWebGLColor(color: Color): Float32Array {
+		return new Float32Array([
+			MathUtils.changeRange(color.r, 0, 255, 0, 1),
+			MathUtils.changeRange(color.g, 0, 255, 0, 1),
+			MathUtils.changeRange(color.b, 0, 255, 0, 1),
+			color.a
+		]);
+	}
+}

src/hw1/GradientCircleShaderType.ts

@@ -0,0 +1,68 @@
+import Map from "../Wolfie2D/DataTypes/Map";
+import Mat4x4 from "../Wolfie2D/DataTypes/Mat4x4";
+import Vec2 from "../Wolfie2D/DataTypes/Vec2";
+import RectShaderType from "../Wolfie2D/Rendering/WebGLRendering/ShaderTypes/RectShaderType";
+
+/**
+ * The gradient circle is technically rendered on a quad, and is similar to a rect, so we'll extend the RectShaderType
+ */
+export default class GradientCircleShaderType extends RectShaderType {
+
+	initBufferObject(): void {
+		this.bufferObjectKey = "gradient_circle";
+		this.resourceManager.createBuffer(this.bufferObjectKey);
+	}
+
+	render(gl: WebGLRenderingContext, options: Record<string, any>): void {
+		// Get our program and buffer object
+		const program = this.resourceManager.getShaderProgram(this.programKey);
+		const buffer = this.resourceManager.getBuffer(this.bufferObjectKey);
+
+		// Let WebGL know we're using our shader program
+		gl.useProgram(program);
+
+		// Get our vertex data
+		const vertexData = this.getVertices(options.size.x, options.size.y);
+		const FSIZE = vertexData.BYTES_PER_ELEMENT;
+
+		// Bind the buffer
+		gl.bindBuffer(gl.ARRAY_BUFFER, buffer);
+		gl.bufferData(gl.ARRAY_BUFFER, vertexData, gl.STATIC_DRAW);
+
+		/* ##### ATTRIBUTES ##### */
+		// No texture, the only thing we care about is vertex position
+		const a_Position = gl.getAttribLocation(program, "a_Position");
+		gl.vertexAttribPointer(a_Position, 2, gl.FLOAT, false, 2 * FSIZE, 0 * FSIZE);
+		gl.enableVertexAttribArray(a_Position);
+
+		/* ##### UNIFORMS ##### */
+		// Send the color to the gradient circle
+		const color = options.color.toWebGL();
+		const u_Color = gl.getUniformLocation(program, "u_Color");
+		gl.uniform4fv(u_Color, color);
+
+		// Get transformation matrix
+		// We have a square for our rendering space, so get the maximum dimension of our quad
+		let maxDimension = Math.max(options.size.x, options.size.y);
+
+		// The size of the rendering space will be a square with this maximum dimension
+		let size = new Vec2(maxDimension, maxDimension).scale(2/options.worldSize.x, 2/options.worldSize.y);
+
+		// Center our translations around (0, 0)
+		const translateX = (options.position.x - options.origin.x - options.worldSize.x/2)/maxDimension;
+		const translateY = -(options.position.y - options.origin.y - options.worldSize.y/2)/maxDimension;
+
+		// Create our transformation matrix
+		this.translation.translate(new Float32Array([translateX, translateY]));
+		this.scale.scale(size);
+		this.rotation.rotate(options.rotation);
+		let transformation = Mat4x4.MULT(this.translation, this.scale, this.rotation);
+
+		// Pass the translation matrix to our shader
+		const u_Transform = gl.getUniformLocation(program, "u_Transform");
+		gl.uniformMatrix4fv(u_Transform, false, transformation.toArray());
+
+		// Draw the quad
+		gl.drawArrays(gl.TRIANGLE_STRIP, 0, 4);
+	}
+}

src/hw1/HW1_Enums.ts

@@ -0,0 +1,8 @@
+export enum Homework1Event {
+	PLAYER_DAMAGE = "PLAYER_DAMAGE",
+	SPAWN_FLEET = "SPAWN_FLEET"
+}
+
+export enum Homework1Shaders {
+	GRADIENT_CIRCLE = "GRADIENT_CIRCLE"
+}

src/hw1/HW1_Scene.ts

@@ -0,0 +1,107 @@
+import AABB from "../Wolfie2D/DataTypes/Shapes/AABB";
+import Vec2 from "../Wolfie2D/DataTypes/Vec2";
+import Graphic from "../Wolfie2D/Nodes/Graphic";
+import { GraphicType } from "../Wolfie2D/Nodes/Graphics/GraphicTypes";
+import AnimatedSprite from "../Wolfie2D/Nodes/Sprites/AnimatedSprite";
+import Scene from "../Wolfie2D/Scene/Scene";
+import { Homework1Event, Homework1Shaders } from "./HW1_Enums";
+import SpaceshipPlayerController from "./SpaceshipPlayerController";
+
+/**
+ * In Wolfie2D, custom scenes extend the original scene class.
+ * This gives us access to lifecycle methods to control our game.
+ */
+export default class Homework1_Scene extends Scene {
+	// Here we define member variables of our game, and object pools for adding in game objects
+	private player: AnimatedSprite;
+
+	// Create an object pool for our fleet
+	private MAX_FLEET_SIZE = 20;
+	private fleet: Array<AnimatedSprite> = new Array(this.MAX_FLEET_SIZE);
+
+	// Create an object pool for our fleet
+	private MAX_NUM_ASTEROIDS = 6;
+	private asteroids: Array<Graphic> = new Array(this.MAX_NUM_ASTEROIDS);
+
+	// Create an object pool for our fleet
+	private MAX_NUM_MINERALS = 20;
+	private minerals: Array<Graphic> = new Array(this.MAX_NUM_MINERALS);
+
+	/*
+	 * loadScene() overrides the parent class method. It allows us to load in custom assets for
+	 * use in our scene.
+	 */
+	loadScene(){
+		/* ##### DO NOT MODIFY ##### */
+		// Load in the player spaceship spritesheet
+		this.load.spritesheet("player", "hw1_assets/spritesheets/player_spaceship.json");
+
+		/* ##### YOUR CODE GOES BELOW THIS LINE ##### */
+	}
+
+	/*
+	 * startScene() allows us to add in the assets we loaded in loadScene() as game objects.
+	 * Everything here happens strictly before update
+	 */
+	startScene(){
+		/* ##### DO NOT MODIFY ##### */
+		// Create a layer to serve as our main game - Feel free to use this for your own assets
+		// It is given a depth of 5 to be above our background
+		this.addLayer("primary", 5);
+
+		// Add in the player as an animated sprite
+		// We give it the key specified in our load function and the name of the layer
+		this.player = this.add.animatedSprite("player", "primary");
+		
+		// Set the player's position to the middle of the screen, and scale it down
+		this.player.position.set(this.viewport.getCenter().x, this.viewport.getCenter().y);
+		this.player.scale.set(0.5, 0.5);
+
+		// Play the idle animation by default
+		this.player.animation.play("idle");
+
+		// Add physics to the player
+		let playerCollider = new AABB(Vec2.ZERO, new Vec2(64, 64));
+
+		// We'll specify a smaller collider centered on the player.
+		// Also, we don't need collision handling, so disable it.
+		this.player.addPhysics(playerCollider, Vec2.ZERO, false);
+
+		// Add a a playerController to the player
+		this.player.addAI(SpaceshipPlayerController, {owner: this.player, spawnFleetEventKey: "spawnFleet"});
+		
+		/* ##### YOUR CODE GOES BELOW THIS LINE ##### */
+		// Initialize the fleet object pool
+
+		// Initialize the mineral object pool
+		for(let i = 0; i < this.minerals.length; i++){
+			this.minerals[i] = this.add.graphic(GraphicType.RECT, "primary", {position: new Vec2(0, 0), size: new Vec2(32, 32)});
+			this.minerals[i].visible = false;
+		}
+
+		// Initialize the asteroid object pool
+		let gc = this.add.graphic(GraphicType.RECT, "primary", {position: new Vec2(400, 400), size: new Vec2(100, 100)});
+		gc.useCustomShader(Homework1Shaders.GRADIENT_CIRCLE);
+
+		// Subscribe to events
+		this.receiver.subscribe(Homework1Event.PLAYER_DAMAGE);
+		this.receiver.subscribe(Homework1Event.SPAWN_FLEET);
+	}
+
+	/*
+	 * updateScene() is where the real work is done. This is where any custom behavior goes.
+	 */
+	updateScene(){
+		// Handle events we care about
+		while(this.receiver.hasNextEvent()){
+			let event = this.receiver.getNextEvent();
+		}
+
+		// Check for collisions
+		for(let i = 0; i < this.minerals.length; i++){
+			if(this.player.collisionShape.overlaps(this.minerals[i].boundary)){
+				console.log(true);
+			}
+		}
+	}
+}

src/hw1/SpaceshipPlayerController.ts

@@ -0,0 +1,77 @@
+import AI from "../Wolfie2D/DataTypes/Interfaces/AI";
+import Vec2 from "../Wolfie2D/DataTypes/Vec2";
+import Debug from "../Wolfie2D/Debug/Debug";
+import Emitter from "../Wolfie2D/Events/Emitter";
+import GameEvent from "../Wolfie2D/Events/GameEvent";
+import Input from "../Wolfie2D/Input/Input";
+import AnimatedSprite from "../Wolfie2D/Nodes/Sprites/AnimatedSprite";
+import MathUtils from "../Wolfie2D/Utils/MathUtils";
+import { Homework1Event } from "./HW1_Enums";
+
+export default class SpaceshipPlayerController implements AI {
+	// We want to be able to control our owner, so keep track of them
+	private owner: AnimatedSprite;
+
+	// The direction the spaceship is moving
+	private direction: Vec2;
+	private MIN_SPEED: number = 0;
+	private MAX_SPEED: number = 300;
+	private speed: number;
+	private ACCELERATION: number = 4;
+	private rotationSpeed: number;
+
+	// An emitter to hook into the event queue
+	private emitter: Emitter;
+
+	initializeAI(owner: AnimatedSprite, options: Record<string, any>): void {
+		this.owner = owner;
+
+		// Start facing up
+		this.direction = new Vec2(0, 1);
+		this.speed = 0;
+		this.rotationSpeed = 2;
+
+		this.emitter = new Emitter();
+	}
+
+	handleEvent(event: GameEvent): void {
+		// We need to handle animations when we get hurt
+		if(event.type === Homework1Event.PLAYER_DAMAGE){
+			this.owner.animation.play("shield");
+		}
+	}
+
+	update(deltaT: number): void {
+		// We need to handle player input
+		let forwardAxis = (Input.isPressed('forward') ? 1 : 0) + (Input.isPressed('backward') ? -1 : 0);
+		let turnDirection = (Input.isPressed('turn_ccw') ? -1 : 0) + (Input.isPressed('turn_cw') ? 1 : 0);
+
+		// Space controls - speed stays the same if nothing happens
+		// Forward to speed up, backward to slow down
+		this.speed += this.ACCELERATION * forwardAxis;
+		this.speed = MathUtils.clamp(this.speed, this.MIN_SPEED, this.MAX_SPEED);
+
+		// Rotate the player
+		this.direction.rotateCCW(turnDirection * this.rotationSpeed * deltaT);
+
+		// Update the visual direction of the player
+		this.owner.rotation = -(Math.atan2(this.direction.y, this.direction.x) - Math.PI/2);
+		
+		// Move the player with physics
+		this.owner.move(this.direction.scaled(-this.speed * deltaT));
+	
+		// If the player clicked, we need to spawn in a fleet member
+		if(Input.isMouseJustPressed()){
+			this.emitter.fireEvent(Homework1Event.SPAWN_FLEET, {position: Input.getGlobalMousePosition()});
+		}
+
+		// Animations
+		if(!this.owner.animation.isPlaying("shield")){
+			if(this.speed > 0){
+				this.owner.animation.playIfNotAlready("boost");
+			} else {
+				this.owner.animation.playIfNotAlready("idle");
+			}
+		}
+	}
+} 

src/main.ts

@@ -1,30 +1,36 @@
 import Game from "./Wolfie2D/Loop/Game";
-import Platformer from "./Platformer";
+import Homework1_Scene from "./hw1/HW1_Scene";
+import Registry from "./Wolfie2D/Registry/Registry";
+import { Homework1Shaders } from "./hw1/HW1_Enums";
+import GradientCircleShaderType from "./hw1/GradientCircleShaderType";
 
 // The main function is your entrypoint into Wolfie2D. Specify your first scene and any options here.
 (function main(){
-    // These are options for initializing the game
+    // Set up options
-    // Here, we'll set the size of the viewport, color the background, and set up key bindings.
     let options = {
-        canvasSize: {x: 800, y: 600},
+        canvasSize: {x: 1200, y: 800},
-        zoomLevel: 4,
+        clearColor: {r: 0.1, g: 0.1, b: 0.1},
-        clearColor: {r: 34, g: 32, b: 52},
         inputs: [
-            { name: "left", keys: ["a"] },
+            { name: "forward", keys: ["w"] },
-            { name: "right", keys: ["d"] },
+            { name: "backward", keys: ["s"] },
-            { name: "jump", keys: ["space", "w"]}
+            { name: "turn_ccw", keys: ["a"] },
-        ]
+            { name: "turn_cw", keys: ["d"] },
+        ],
+        useWebGL: true,
+        showDebug: false
     }
 
-    // Create our game. This will create all of the systems.
+    // We have a custom shader, so lets add it to the registry and preload it
-    const demoGame = new Game(options);
+    Registry.shaders.registerAndPreloadItem(
+        Homework1Shaders.GRADIENT_CIRCLE,   // The key of the shader program
+        GradientCircleShaderType,           // The constructor of the shader program
+        "hw1_assets/shaders/gradient_circle.vshader",   // The path to the vertex shader
+        "hw1_assets/shaders/gradient_circle.fshader");  // the path to the fragment shader
 
-    // Run our game. This will start the game loop and get the updates and renders running.
+    // Create a game with the options specified
-    demoGame.start();
+    const game = new Game(options);
 
-    // For now, we won't specify any scene options.
+    // Start our game
-    let sceneOptions = {};
+    game.start();
-
+    game.getSceneManager().addScene(Homework1_Scene, {});
-    // Add our first scene. This will load this scene into the game world.
-    demoGame.getSceneManager().addScene(Platformer, sceneOptions);
 })();