126 | 
127 | 
128 | 
129 | 
130 | 
131 |
132 |
133 |
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/src/index.ts:
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1 | import { prepareAssets } from "./assets";
2 | import { Game } from "./game";
3 | import { playMusic } from "./music";
4 |
5 | let cumulativeTime = 0;
6 | const timeStep = 1000 / 60;
7 |
8 | let game: Game;
9 |
10 | async function init() {
11 | await prepareAssets();
12 |
13 | const canvas = document.getElementsByTagName("canvas")[0];
14 |
15 | game = new Game(canvas);
16 | game.start();
17 |
18 | requestAnimationFrame(tick);
19 |
20 | window.addEventListener("resize", () => game.engine.renderer.updateSize());
21 | }
22 |
23 | export function tick(timestamp: number) {
24 | const timeDiff = timestamp - cumulativeTime;
25 | const steps = Math.floor(timeDiff / timeStep);
26 | cumulativeTime += steps * timeStep;
27 |
28 | for (let i = 0; i < steps; i++) {
29 | game.engine.update_(timeStep);
30 | }
31 | game.engine.camera.update_();
32 | game.engine.renderer.render();
33 | requestAnimationFrame(tick);
34 | playMusic(cumulativeTime);
35 | }
36 |
37 | init();
38 |
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/src/level.interface.ts:
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1 | import { Vector2 } from "./vector";
2 | import { ObjectType } from "./editor/objects";
3 |
4 | export const enum PickableType {
5 | crystal,
6 | gravityCrystal,
7 | bubble,
8 | }
9 |
10 | export const enum PathCommandType {
11 | move,
12 | line,
13 | bezier,
14 | close,
15 | }
16 |
17 | export interface CanBeDeadly {
18 | isDeadly: boolean;
19 | }
20 |
21 | export interface Pickable {
22 | type: PickableType;
23 | pos: Vector2;
24 | collected: boolean;
25 | radius: number;
26 | }
27 |
28 | export interface PathCommand extends CanBeDeadly {
29 | type: PathCommandType;
30 | points?: Vector2[];
31 | }
32 |
33 | export interface Platform extends CanBeDeadly {
34 | x: number;
35 | y: number;
36 | w: number;
37 | h: number;
38 | }
39 |
40 | export interface Level {
41 | size_: Vector2;
42 | startingPos: number; // y coordinate
43 | pathCommands: PathCommand[];
44 | platforms: Platform[];
45 | savepoints: number[];
46 | pickables: Pickable[];
47 |
48 | // Below are properties present only in development build.
49 | // Needed for editor to work.
50 |
51 | // TODO Should be more general then PathCommand
52 | pointToCommandMap?: Map