62 lines
1.3 KiB
TypeScript
62 lines
1.3 KiB
TypeScript
import type { Circle } from "#/engine/Circle.ts";
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import type MapProxy from "#/engine/lib/MapProxy.ts";
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import type { Polygon } from "#/engine/Polygon.ts";
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import type { Rect } from "#/engine/Rect.ts";
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import $ from "#/engine/Scene.ts";
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import type { Vector } from "#/engine/Vector.ts";
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const CIRCLE = 0;
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const RECT = 1;
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const POLYGON = 2;
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type Shape = 0 | 1 | 2;
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export type Collider = {
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shape: Shape;
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};
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export type Collision = {
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id: string;
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};
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const collisions = new Map<string, Collision>();
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function check(
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id: string,
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collider: Collider,
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position: Vector,
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colliders: MapProxy<string, Collider>,
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): string | undefined {
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for (const [oid, other] of colliders.entries()) {
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if (oid !== id && other) {
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return oid;
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}
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}
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}
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export function moveAndCollide(
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id: string,
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velocity: Vector,
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delta: number,
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): Collision | undefined {
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return collisions.get(id);
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}
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export function processPhysics(
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ctx: CanvasRenderingContext2D,
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delta: number,
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): void {
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const colliders = $<Collider>("collider")!;
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const positions = $<Vector>("position")!;
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for (const [id, collider] of colliders.entries()) {
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const position = positions.get(id)!;
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const target = check(id, collider.value, position.value, colliders);
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if (target !== undefined) {
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collisions.set(id, { id: target });
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} else {
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collisions.delete(id);
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}
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}
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}
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