core: split: game and pong

frontend/static/js/api/game/pong/PongBall.js

@@ -0,0 +1,82 @@
+import { AExchangeable } from "../../AExchangable.js";
+import { PongGame } from "./PongGame.js";
+import { renderCube} from "../../../3D/cube.js"
+import { Position } from "./Position.js";
+
+export class PongBall extends AExchangeable
+{
+    /**
+     * 
+     * @param {PongGame} game 
+     * @param {Position} position
+     * @param {Number} angle
+     * @param {Number} speed
+     * @param {Number} size
+     */
+    constructor(game, size, position = new Position(), angle, speed)
+    {
+        super();
+
+        /**
+         * @type {PongGame}
+         */
+        this.game = game;
+
+        /**
+         * @type {Position}
+         */
+        this.position = position;
+
+        /**
+         * @type {Number}
+         */
+        this.size = size;
+
+        /**
+         * @type {Number}
+         */
+        this.angle = angle;
+
+        /**
+         * @type {Number}
+         */
+        this.speed = speed;
+    }
+
+    /**
+     * 
+     * @param {CanvasRenderingContext2D} ctx 
+     */
+    draw(ctx)
+    {
+		if(ctx instanceof CanvasRenderingContext2D)
+		{
+			ctx.rect(this.position.location.x - this.size / 2, this.position.location.y - this.size / 2, this.size, this.size);
+		}
+		else if(ctx instanceof WebGLRenderingContext)
+		{
+			const size = this.size * 3;
+			const posx = (this.position.location.x - this.size / 2) - this.game.config.MAP_SIZE_X / 2;
+			const posy = (this.position.location.y - this.size / 2) - this.game.config.MAP_SIZE_Y / 2;
+			renderCube(ctx, posx, 0, posy, 0, size, size, size);
+		}
+		else
+		{
+			alert('Unknown rendering context type');
+		}
+    }
+
+    /**
+     * 
+     * @param {CanvasRenderingContext2D} ctx 
+     */
+    render(ctx)
+    {
+        let distance = this.speed * (this.game.time.deltaTime() / 1000);
+
+        this.position.location.x = this.position.location.x + distance * Math.cos(this.angle);
+        this.position.location.y = this.position.location.y - distance * Math.sin(this.angle);
+
+        this.draw(ctx);
+    }
+}