root
109 lines
4.3 KiB
TypeScript
109 lines
4.3 KiB
TypeScript
import { describe, it, expect } from 'vitest';
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import { World } from '../../ecs/World.js';
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import { statModifierSystem } from '../statModifierSystem.js';
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import type { Stats, StatModifiers, Needs } from '@dflike/shared';
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function setupEntity(
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world: World,
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statsOverrides: Partial<Stats> = {},
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needs?: Partial<Needs>,
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modifiers: StatModifiers['modifiers'] = [],
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): number {
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const e = world.createEntity();
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const base: Stats = {
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strength: 10, dexterity: 10, constitution: 10, intelligence: 10, perception: 10,
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sociability: 10, courage: 10, curiosity: 10, empathy: 10, temperament: 10,
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...statsOverrides,
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};
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world.addComponent<Stats>(e, 'stats', base);
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world.addComponent<StatModifiers>(e, 'statModifiers', { modifiers: [...modifiers] });
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if (needs) {
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world.addComponent<Needs>(e, 'needs', { hunger: 80, energy: 80, ...needs });
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}
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return e;
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}
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describe('statModifierSystem', () => {
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describe('modifier decay', () => {
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it('decrements remaining on each modifier', () => {
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const world = new World();
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const e = setupEntity(world, {}, undefined, [
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{ stat: 'strength', value: 2, remaining: 10 },
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]);
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statModifierSystem(world);
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const mods = world.getComponent<StatModifiers>(e, 'statModifiers')!;
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expect(mods.modifiers[0].remaining).toBe(9);
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});
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it('removes expired modifiers (remaining reaches 0)', () => {
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const world = new World();
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const e = setupEntity(world, {}, undefined, [
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{ stat: 'strength', value: 2, remaining: 1 },
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{ stat: 'dexterity', value: -1, remaining: 5 },
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]);
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statModifierSystem(world);
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const mods = world.getComponent<StatModifiers>(e, 'statModifiers')!;
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expect(mods.modifiers).toHaveLength(1);
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expect(mods.modifiers[0].stat).toBe('dexterity');
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});
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it('does not decrement permanent modifiers (remaining = -1)', () => {
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const world = new World();
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const e = setupEntity(world, {}, undefined, [
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{ stat: 'intelligence', value: -2, remaining: -1 },
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]);
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statModifierSystem(world);
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const mods = world.getComponent<StatModifiers>(e, 'statModifiers')!;
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expect(mods.modifiers[0].remaining).toBe(-1);
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});
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});
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describe('needs-based modifiers', () => {
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it('applies intelligence -2 and sociability -1 when hunger < 30', () => {
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const world = new World();
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const e = setupEntity(world, {}, { hunger: 20, energy: 80 });
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statModifierSystem(world);
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const mods = world.getComponent<StatModifiers>(e, 'statModifiers')!;
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const intMod = mods.modifiers.find(m => m.stat === 'intelligence' && m.remaining === -1);
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const socMod = mods.modifiers.find(m => m.stat === 'sociability' && m.remaining === -1);
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expect(intMod?.value).toBe(-2);
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expect(socMod?.value).toBe(-1);
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});
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it('applies dexterity -2 and temperament -2 when energy < 20', () => {
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const world = new World();
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const e = setupEntity(world, {}, { hunger: 80, energy: 10 });
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statModifierSystem(world);
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const mods = world.getComponent<StatModifiers>(e, 'statModifiers')!;
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const dexMod = mods.modifiers.find(m => m.stat === 'dexterity' && m.remaining === -1);
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const tempMod = mods.modifiers.find(m => m.stat === 'temperament' && m.remaining === -1);
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expect(dexMod?.value).toBe(-2);
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expect(tempMod?.value).toBe(-2);
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});
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it('removes needs-based modifiers when needs recover', () => {
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const world = new World();
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const e = setupEntity(world, {}, { hunger: 20, energy: 80 });
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statModifierSystem(world);
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// Now hunger recovers
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const needs = world.getComponent<Needs>(e, 'needs')!;
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needs.hunger = 80;
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statModifierSystem(world);
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const mods = world.getComponent<StatModifiers>(e, 'statModifiers')!;
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const needsMods = mods.modifiers.filter(m => m.remaining === -1);
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expect(needsMods).toHaveLength(0);
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});
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it('does not stack needs-based modifiers across ticks', () => {
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const world = new World();
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const e = setupEntity(world, {}, { hunger: 20, energy: 80 });
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statModifierSystem(world);
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statModifierSystem(world);
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statModifierSystem(world);
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const mods = world.getComponent<StatModifiers>(e, 'statModifiers')!;
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const intMods = mods.modifiers.filter(m => m.stat === 'intelligence' && m.remaining === -1);
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expect(intMods).toHaveLength(1);
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});
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});
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});
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