38 lines
1.3 KiB
TypeScript
38 lines
1.3 KiB
TypeScript
import { expect, test } from "vitest";
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import { type AABB, vec } from "./given.ts";
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import { moveAndSlide } from "./moveAndSlide.ts";
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const player: AABB = { x: 0, y: 0, w: 2, h: 2 };
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test("no walls -> full move", () => {
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const p = moveAndSlide(player, vec(10, 5), []);
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expect(p.x).toBeCloseTo(10);
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expect(p.y).toBeCloseTo(5);
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});
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test("head-on into the NEAREST of two walls -> stops there", () => {
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const walls: AABB[] = [
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{ x: 5, y: 0, w: 2, h: 2 }, // nearer
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{ x: 8, y: 0, w: 2, h: 2 }, // farther
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];
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const p = moveAndSlide(player, vec(10, 0), walls);
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expect(p.x).toBeCloseTo(3); // right edge (2) meets wall left edge (5)
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expect(p.y).toBeCloseTo(0);
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});
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test("diagonal into a vertical wall -> slides down it", () => {
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// x is blocked at 3, but the downward motion keeps going for the whole frame
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const walls: AABB[] = [{ x: 5, y: -10, w: 2, h: 40 }];
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const p = moveAndSlide(player, vec(10, 10), walls);
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expect(p.x).toBeCloseTo(3);
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expect(p.y).toBeCloseTo(10);
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});
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test("diagonal onto a floor -> slides along it", () => {
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// falls until its bottom meets the floor top (y=8 -> corner y=6), keeps moving in x
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const walls: AABB[] = [{ x: 0, y: 8, w: 20, h: 2 }];
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const p = moveAndSlide(player, vec(5, 10), walls);
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expect(p.x).toBeCloseTo(5);
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expect(p.y).toBeCloseTo(6);
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});
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