rpg-mcp

import { describe, it, expect } from 'vitest'; import { CombatEngine } from '../../src/math/combat'; describe('CombatEngine', () => { const engine = new CombatEngine('combat-test'); it('should resolve attacks', () => { // Seed 'combat-test' needs to be deterministic. // Let's rely on the result structure rather than exact values for now, // or check that it returns hit/miss/crit. const result = engine.attackRoll({ attackBonus: 5 }, { ac: 15 }); expect(['hit', 'miss', 'crit']).toContain(result.result); expect(result.steps).toEqual(expect.arrayContaining([expect.stringMatching(/Target AC: 15/)])); }); it('should handle critical hits in damage', () => { const result = engine.damageRoll('1d8+3', true); // Should roll 2d8+3 expect(result.input).toContain('2d8+3'); expect(result.steps[0]).toContain('Critical Hit'); }); it('should resolve saving throws', () => { const result = engine.savingThrow(15, 2); expect(['success', 'failure']).toContain(result.result); expect(result.steps).toEqual(expect.arrayContaining([expect.stringMatching(/DC: 15/)])); }); it('should calculate fall damage', () => { const result = engine.fallDamage(35); // 3d6 expect(result.input).toBe('3d6'); }); it('should cap fall damage', () => { const result = engine.fallDamage(300); // Max 20d6 expect(result.input).toBe('20d6'); }); it('should calculate encounter balance', () => { // Party: 4 level 1s. XP Thresholds: Easy 100, Med 200, Hard 300, Deadly 400. // Enemies: 4 Goblins (CR 1/4 = 50 XP each). Total 200 XP. // Multiplier for 4 enemies: x2. Adjusted XP = 400. // Difficulty: Deadly. const result = engine.encounterBalance([1, 1, 1, 1], [0.25, 0.25, 0.25, 0.25]); expect(result.difficulty).toBe('Deadly'); expect(result.adjustedXP).toBe(400); }); });