jakciehan
68 lines
3.0 KiB
TypeScript
68 lines
3.0 KiB
TypeScript
import { DropSystem } from '@logic/DropSystem';
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import { EnemyType, ItemType } from '@data/Interfaces';
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describe('DropSystem — crystal jade deterministic rule (req 7.1)', () => {
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it('spawns a crystal jade on exactly the 12th kill', () => {
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const ds = new DropSystem({ random: () => 1 });
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let crystalEvents = 0;
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for (let i = 1; i <= 24; i++) {
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const drops = ds.onEnemyKilled(EnemyType.YaoFang, { x: 100, y: 0 });
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if (drops.some((d) => d.item === ItemType.CrystalJade)) crystalEvents++;
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}
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expect(crystalEvents).toBe(2);
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});
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it('spawns the crystal above the kill point', () => {
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const ds = new DropSystem({ random: () => 1 });
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for (let i = 0; i < 11; i++) ds.onEnemyKilled(EnemyType.QingRen, { x: 0, y: 0 });
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const drops = ds.onEnemyKilled(EnemyType.QingRen, { x: 300, y: 20 });
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const crystal = drops.find((d) => d.item === ItemType.CrystalJade);
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expect(crystal!.y).toBeGreaterThan(20);
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});
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});
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describe('DropSystem — Chi Ren consecutive rule (req 7.3)', () => {
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it('drops dian_wan or shu_wan on the 3rd consecutive Chi Ren kill if RNG <0.5', () => {
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const ds = new DropSystem({
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dianShuWanProbability: 0.5,
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random: (() => {
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// probability check then which-item check both pass
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const vals = [0.1, 0.2];
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let i = 0;
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return () => vals[i++ % vals.length];
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})(),
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});
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ds.onEnemyKilled(EnemyType.ChiRen, { x: 0, y: 0 });
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ds.onEnemyKilled(EnemyType.ChiRen, { x: 0, y: 0 });
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const drops = ds.onEnemyKilled(EnemyType.ChiRen, { x: 50, y: 10 });
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expect(drops.find((d) => d.item === ItemType.DianWan)).toBeDefined();
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});
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it('does not drop when RNG fails probability', () => {
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const ds = new DropSystem({ dianShuWanProbability: 0.5, random: () => 0.95 });
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ds.onEnemyKilled(EnemyType.ChiRen, { x: 0, y: 0 });
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ds.onEnemyKilled(EnemyType.ChiRen, { x: 0, y: 0 });
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const drops = ds.onEnemyKilled(EnemyType.ChiRen, { x: 0, y: 0 });
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expect(drops.filter((d) => d.item !== ItemType.CrystalJade).length).toBe(0);
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});
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it('non-Chi-Ren kill resets the consecutive counter', () => {
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const ds = new DropSystem({ dianShuWanProbability: 1.0, random: () => 0 });
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ds.onEnemyKilled(EnemyType.ChiRen, { x: 0, y: 0 });
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ds.onEnemyKilled(EnemyType.ChiRen, { x: 0, y: 0 });
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ds.onEnemyKilled(EnemyType.QingRen, { x: 0, y: 0 });
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const drops = ds.onEnemyKilled(EnemyType.ChiRen, { x: 0, y: 0 });
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// Only 1 Chi Ren kill since reset — below threshold.
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expect(drops.filter((d) => d.item === ItemType.DianWan || d.item === ItemType.ShuWan).length).toBe(0);
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});
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});
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describe('DropSystem — reset()', () => {
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it('zeroes kill counters', () => {
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const ds = new DropSystem();
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ds.onEnemyKilled(EnemyType.QingRen, { x: 0, y: 0 });
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ds.reset();
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expect(ds.kills).toBe(0);
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});
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});
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