restructured game nodes and created canvas node subclass

src/Nodes/CanvasNode.ts

@@ -0,0 +1,24 @@
+import GameNode from "./GameNode";
+import Vec2 from "../DataTypes/Vec2";
+
+export default abstract class CanvasNode extends GameNode{
+	protected size: Vec2;
+
+	constructor(){
+		super();
+		this.size = new Vec2(0, 0);
+	}
+
+	getSize(): Vec2 {
+		return this.size;
+	}
+
+	contains(x: number, y: number): boolean {
+		if(this.position.x < x && this.position.x + this.size.x > x){
+			if(this.position.y < y && this.position.y + this.size.y > y){
+				return true;
+			}
+		}
+		return false;
+	}
+}

src/Nodes/ColoredCircle.ts

@@ -1,10 +1,10 @@
-import GameNode from "./GameNode";
+import CanvasNode from "./CanvasNode";
 import Color from "../Utils/Color";
 import Vec2 from "../DataTypes/Vec2";
 import RandUtils from "../Utils/RandUtils";
 
-export default class ColoredCircle extends GameNode{
-	private color: Color;
+export default class ColoredCircle extends CanvasNode{
+    private color: Color;
 
     constructor(){
         super();

src/Nodes/GameNode.ts

@@ -1,35 +1,33 @@
 import EventQueue from "../Events/EventQueue";
 import InputReceiver from "../Input/InputReceiver";
 import Vec2 from "../DataTypes/Vec2";
+import Map from "../DataTypes/Map";
+import Receiver from "../Events/Receiver";
+import GameEvent from "../Events/GameEvent";
 
 export default abstract class GameNode{
-	protected eventQueue: EventQueue;
+	private eventQueue: EventQueue;
 	protected input: InputReceiver;
 	protected position: Vec2;
-	protected size: Vec2;
+	private receiver: Receiver;
 
 	constructor(){
 		this.eventQueue = EventQueue.getInstance();
 		this.input = InputReceiver.getInstance();
 		this.position = new Vec2(0, 0);
-		this.size = new Vec2(0, 0);
 	}
 	
 	getPosition(): Vec2 {
 		return this.position;
 	}
 
-	getSize(): Vec2 {
-		return this.size;
+	subscribe(eventType: string){
+		this.eventQueue.subscribe(this.receiver, eventType);
 	}
 
-	contains(x: number, y: number): boolean {
-		if(x > this.position.x && x < this.position.x + this.size.x){
-			if(y > this.position.y && y < this.position.y + this.size.y){
-				return true;
-			}
-		}
-		return false;
+	emit(eventType: string, data: Map<any> | Record<string, any> = null){
+		let event = new GameEvent(eventType, data);
+		this.eventQueue.addEvent(event);
 	}
 
 	abstract update(deltaT: number): void;

src/Nodes/Player.ts

@@ -1,7 +1,7 @@
-import GameNode from "./GameNode";
+import CanvasNode from "./CanvasNode";
 import Vec2 from "../DataTypes/Vec2";
 
-export default class Player extends GameNode{
+export default class Player extends CanvasNode{
 	velocity: Vec2;
 	speed: number;
 

src/Nodes/UIElement.ts

@@ -1,31 +1,34 @@
-import GameNode from "./GameNode";
+import CanvasNode from "./CanvasNode";
 import Color from "../Utils/Color";
 import Vec2 from "../DataTypes/Vec2";
-import GameEvent from "../Events/GameEvent";
 
-export default class UIElement extends GameNode{
-	parent: GameNode;
-	children: Array<GameNode>;
-	text: string;
-	backgroundColor: Color;
+export default class UIElement extends CanvasNode{
+	// Style attributes
 	textColor: Color;
-	onPress: Function;
-	onPressSignal: string;
+	backgroundColor: Color;
+	borderColor: Color;
+	text: string;
+	font: string;
+
+	// EventAttributes
+	onClick: Function;
+	onClickEventId: string;
 	onHover: Function;
+	onHoverEventId: string;
 
 	constructor(){
 		super();
-		
-		this.parent = null;
-		this.children = [];
-		this.text = "";
-		this.backgroundColor = new Color(0, 0, 0, 0);
 		this.textColor = new Color(0, 0, 0, 1);
+		this.backgroundColor = new Color(0, 0, 0, 0);
+		this.borderColor = new Color(0, 0, 0, 0);
+		this.text = "";
+		this.font = "30px Arial";
 
-		this.onPress = null;
-		this.onPressSignal = null;
+		this.onClick = null;
+		this.onClickEventId = null;
 
 		this.onHover = null;
+		this.onHoverEventId = null;
 	}
 
 	setPosition(vecOrX: Vec2 | number, y: number = null): void {
@@ -58,7 +61,7 @@ export default class UIElement extends GameNode{
 
 	update(deltaT: number): void {
 		if(this.input.isMouseJustPressed()){
-			let mousePos =  this.input.getMousePressPosition();
+			let mousePos = this.input.getMousePressPosition();
 			if(mousePos.x >= this.position.x && mousePos.x <= this.position.x + this.size.x){
 				// Inside x bounds
 				if(mousePos.y >= this.position.y && mousePos.y <= this.position.y + this.size.y){
@@ -67,12 +70,12 @@ export default class UIElement extends GameNode{
 						this.onHover();
 					}
 
-					if(this.onPress !== null){
-						this.onPress();
+					if(this.onClick !== null){
+						this.onClick();
 					}
-					if(this.onPressSignal !== null){
-						let event = new GameEvent(this.onPressSignal, {});
-						this.eventQueue.addEvent(event);
+					if(this.onClickEventId !== null){
+						let data = {};
+						this.emit(this.onClickEventId, data);
 					}
 				}
 			}
@@ -83,7 +86,7 @@ export default class UIElement extends GameNode{
 		ctx.fillStyle = this.backgroundColor.toStringRGBA();
 		ctx.fillRect(this.position.x - viewportOrigin.x, this.position.y - viewportOrigin.y, this.size.x, this.size.y);
 		ctx.fillStyle = this.textColor.toStringRGBA();
-		ctx.font = "30px Arial"
+		ctx.font = this.font;
 		ctx.fillText(this.text, this.position.x - viewportOrigin.x, this.position.y - viewportOrigin.y + 30);
 	}
 }

src/SceneGraph/SceneGraphArray.ts

@@ -1,15 +1,15 @@
 import SceneGraph from "./SceneGraph";
-import GameNode from "../Nodes/GameNode";
+import CanvasNode from "../Nodes/CanvasNode";
 import Viewport from "./Viewport";
 
 export default class SceneGraphArray extends SceneGraph{
-	private nodeList: Array<GameNode>;
+	private nodeList: Array<CanvasNode>;
 	private turnOffViewportCulling_demoTool: boolean;
 
     constructor(viewport: Viewport){
         super(viewport);
 
-        this.nodeList = new Array<GameNode>();
+        this.nodeList = new Array<CanvasNode>();
         this.turnOffViewportCulling_demoTool = false;
     }
 
@@ -17,18 +17,18 @@ export default class SceneGraphArray extends SceneGraph{
         this.turnOffViewportCulling_demoTool = bool;
     }
 
-    addNodeSpecific(node: GameNode, id: string): void {
+    addNodeSpecific(node: CanvasNode, id: string): void {
         this.nodeList.push(node);
     }
 
-    removeNodeSpecific(node: GameNode, id: string): void {
+    removeNodeSpecific(node: CanvasNode, id: string): void {
         let index = this.nodeList.indexOf(node);
         if(index > -1){
             this.nodeList.splice(index, 1);
         }
     }
 
-    getNodeAtCoords(x: number, y: number): GameNode {
+    getNodeAtCoords(x: number, y: number): CanvasNode {
         // TODO: This only returns the first node found. There is no notion of z coordinates
         for(let node of this.nodeList){
             if(node.contains(x, y)){
@@ -44,17 +44,17 @@ export default class SceneGraphArray extends SceneGraph{
         }
     }
 
-    getVisibleSet(): Array<GameNode> {
+    getVisibleSet(): Array<CanvasNode> {
         // If viewport culling is turned off for demonstration
         if(this.turnOffViewportCulling_demoTool){
-            let visibleSet = new Array<GameNode>();
+            let visibleSet = new Array<CanvasNode>();
             for(let node of this.nodeList){
                 visibleSet.push(node);
             }
             return visibleSet;
         }
 
-        let visibleSet = new Array<GameNode>();
+        let visibleSet = new Array<CanvasNode>();
 
         for(let node of this.nodeList){
             if(this.viewport.includes(node)){

src/SceneGraph/Viewport.ts

@@ -1,6 +1,7 @@
 import Vec2 from "../DataTypes/Vec2";
 import Vec4 from "../DataTypes/Vec4";
 import GameNode from "../Nodes/GameNode";
+import CanvasNode from "../Nodes/CanvasNode";
 import MathUtils from "../Utils/MathUtils";
 
 export default class Viewport{
@@ -39,7 +40,7 @@ export default class Viewport{
 		}
     }
     
-    includes(node: GameNode): boolean {
+    includes(node: CanvasNode): boolean {
         let nodePos = node.getPosition();
         let nodeSize = node.getSize();
         if(nodePos.x + nodeSize.x > this.position.x && nodePos.x < this.position.x + this.size.x){

src/main.ts

@@ -20,21 +20,21 @@ function main(){
     recordButton.setText("Record");
     recordButton.setBackgroundColor(new Color(200, 100, 0, 0.3));
     recordButton.setPosition(400, 30);
-    recordButton.onPressSignal = "record_button_press";
+    recordButton.onClickEventId = "record_button_press";
 
     let stopButton = new UIElement();
     stopButton.setSize(100, 50);
     stopButton.setText("Stop");
     stopButton.setBackgroundColor(new Color(200, 0, 0, 0.3));
     stopButton.setPosition(550, 30);
-    stopButton.onPressSignal = "stop_button_press";
+    stopButton.onClickEventId = "stop_button_press";
 
     let playButton = new UIElement();
     playButton.setSize(100, 50);
     playButton.setText("Play");
     playButton.setBackgroundColor(new Color(0, 200, 0, 0.3));
     playButton.setPosition(700, 30);
-    playButton.onPressSignal = "play_button_press";
+    playButton.onClickEventId = "play_button_press";
 
     let cycleFramerateButton = new UIElement();
     cycleFramerateButton.setSize(150, 50);
@@ -43,7 +43,7 @@ function main(){
     cycleFramerateButton.setPosition(5, 400);
     let i = 0;
     let fps = [15, 30, 60];
-    cycleFramerateButton.onPress = () => {
+    cycleFramerateButton.onClick = () => {
         game.setMaxFPS(fps[i]);
         i = (i + 1) % 3;
     }
@@ -53,7 +53,7 @@ function main(){
     pauseButton.setText("Pause");
     pauseButton.setBackgroundColor(new Color(200, 0, 200, 1));
     pauseButton.setPosition(700, 400);
-    pauseButton.onPress = () => {
+    pauseButton.onClick = () => {
         game.getGameState().addScene(pauseMenu);
     }
 
@@ -67,7 +67,7 @@ function main(){
     resumeButton.setText("Resume");
     resumeButton.setBackgroundColor(new Color(200, 0, 200, 1));
     resumeButton.setPosition(400, 200);
-    resumeButton.onPress = () => {
+    resumeButton.onClick = () => {
         game.getGameState().removeScene();
     }