jakciehan
107 lines
4.0 KiB
TypeScript
107 lines
4.0 KiB
TypeScript
import { PlayerMotionModel } from '@logic/PlayerMotionModel';
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import { JumpController, PARABOLIC_HORIZONTAL_SPEED, heightToImpulse } from '@logic/JumpController';
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import {
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JUMP_HEIGHT_STANDARD,
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JUMP_HEIGHT_CHARGED,
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JUMP_HEIGHT_YELLOW,
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JUMP_PREPARE_DELAY_MS,
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PlayerColorState,
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} from '@common/Constants';
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function newPair(color: PlayerColorState = PlayerColorState.Red) {
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const motion = new PlayerMotionModel({
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aabb: { x: 0, y: 16, w: 16, h: 32 },
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platforms: [{ topY: 0, leftX: -500, rightX: 500 }],
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initialColorState: color,
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levelLengthPx: 2000,
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});
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motion.update(0.016); // settle on ground
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const jump = new JumpController(motion);
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return { motion, jump };
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}
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describe('JumpController — press / release lifecycle (req 2.2, 2.3, 2.4, 2.8)', () => {
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it('refuses to press when airborne (req 2.4)', () => {
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const { motion, jump } = newPair();
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motion.applyJumpImpulse(500); // lift off manually
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const res = jump.pressJump(0);
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expect(res.reason).toBe('airborne');
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expect(jump.isButtonEnabled()).toBe(false);
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});
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it('standard-press + quick release → standard jump height', () => {
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const { jump } = newPair();
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jump.pressJump(0);
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const res = jump.releaseJump(100, 'horizontal');
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expect(res.height).toBe(JUMP_HEIGHT_STANDARD);
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expect(res.phase).toBe('crouching');
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});
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it('holding ≥500ms produces the charged jump (req 2.3)', () => {
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const { jump } = newPair();
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jump.pressJump(0);
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const res = jump.releaseJump(600, 'horizontal');
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expect(res.height).toBe(JUMP_HEIGHT_CHARGED);
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});
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it('yellow color state uses 300px baseline jump (req 2.2)', () => {
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const { jump } = newPair(PlayerColorState.Yellow);
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jump.pressJump(0);
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const res = jump.releaseJump(50, 'horizontal', PlayerColorState.Yellow);
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expect(res.height).toBe(JUMP_HEIGHT_YELLOW);
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});
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});
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describe('JumpController — parabolic impulse (req 2.5)', () => {
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it('parabolic_right imparts +PARABOLIC_HORIZONTAL_SPEED', () => {
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const { jump } = newPair();
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jump.pressJump(0);
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const res = jump.releaseJump(100, 'parabolic_right');
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expect(res.horizontalImpulse).toBe(PARABOLIC_HORIZONTAL_SPEED);
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});
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it('parabolic_left imparts −PARABOLIC_HORIZONTAL_SPEED', () => {
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const { jump } = newPair();
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jump.pressJump(0);
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const res = jump.releaseJump(100, 'parabolic_left');
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expect(res.horizontalImpulse).toBe(-PARABOLIC_HORIZONTAL_SPEED);
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});
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});
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describe('JumpController — crouch delay + launch + re-enable (req 2.8, 2.4)', () => {
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it('does not apply impulse until after 150ms crouch delay', () => {
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const { motion, jump } = newPair();
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jump.pressJump(0);
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jump.releaseJump(100, 'horizontal');
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// Inside the crouch window — still grounded because impulse not applied.
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jump.tick(200);
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expect(motion.vy).toBe(0);
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expect(motion.isGrounded).toBe(true);
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jump.tick(100 + JUMP_PREPARE_DELAY_MS + 1);
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expect(motion.vy).toBeGreaterThan(0);
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expect(motion.isGrounded).toBe(false);
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});
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it('re-enables the jump button once the player lands again', () => {
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const { motion, jump } = newPair();
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jump.pressJump(0);
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jump.releaseJump(50, 'horizontal');
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jump.tick(50 + JUMP_PREPARE_DELAY_MS + 1);
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// Let gravity bring the player back down.
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for (let i = 0; i < 120; i++) motion.update(1 / 60);
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jump.tick(1_000);
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expect(motion.isGrounded).toBe(true);
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expect(jump.isButtonEnabled()).toBe(true);
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});
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});
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describe('heightToImpulse — physics math', () => {
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it('computes impulse such that peak equals the requested height', () => {
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const g = 2500;
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const h = 250;
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const v0 = heightToImpulse(h, g);
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// At apex v=0 ⇒ t = v0/g ⇒ peak = v0 * t - 0.5 * g * t^2 ⇒ v0^2 / (2g)
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expect((v0 * v0) / (2 * g)).toBeCloseTo(h, 3);
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});
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});
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