rpg-mcp

import { describe, it, expect, beforeEach } from 'vitest'; import { applyPatch } from '../../src/engine/dsl/engine'; import { CommandType } from '../../src/engine/dsl/schema'; import { StructureType } from '../../src/schema/structure'; import { BiomeType } from '../../src/schema/biome'; import { GeneratedWorld } from '../../src/engine/worldgen/index'; describe('Patch Engine', () => { let world: GeneratedWorld; beforeEach(() => { // Create a minimal mock world const width = 10; const height = 10; world = { seed: 'test', width, height, elevation: new Uint8Array(width * height).fill(100), temperature: new Int8Array(width * height).fill(20), moisture: new Uint8Array(width * height).fill(50), biomes: Array(height).fill(null).map(() => Array(width).fill(BiomeType.GRASSLAND)), rivers: new Uint8Array(width * height).fill(0), regions: [], regionMap: new Int32Array(width * height).fill(-1), structures: [] }; }); it('should apply ADD_STRUCTURE command', () => { const command = { command: CommandType.ADD_STRUCTURE, args: { type: StructureType.CITY, x: 5, y: 5, name: 'Test City' } } as const; applyPatch(world, [command]); expect(world.structures).toHaveLength(1); expect(world.structures[0]).toEqual({ type: StructureType.CITY, location: { x: 5, y: 5 }, name: 'Test City', score: 100 }); }); it('should apply SET_BIOME command', () => { const command = { command: CommandType.SET_BIOME, args: { x: 0, y: 0, type: BiomeType.DESERT } } as const; applyPatch(world, [command]); expect(world.biomes[0][0]).toBe(BiomeType.DESERT); }); it('should apply EDIT_TILE command', () => { const command = { command: CommandType.EDIT_TILE, args: { x: 1, y: 1, elevation: 200, temperature: 30 } } as const; applyPatch(world, [command]); const idx = 1 * world.width + 1; expect(world.elevation[idx]).toBe(200); expect(world.temperature[idx]).toBe(30); expect(world.moisture[idx]).toBe(50); // Unchanged }); it('should apply MOVE_STRUCTURE command', () => { // Setup initial structure world.structures.push({ type: StructureType.TOWN, location: { x: 2, y: 2 }, name: 'Old Town', score: 50 }); const command = { command: CommandType.MOVE_STRUCTURE, args: { id: 'Old Town', x: 8, y: 8 } } as const; applyPatch(world, [command]); expect(world.structures[0].location).toEqual({ x: 8, y: 8 }); }); it('should return error when moving non-existent structure', () => { const command = { command: CommandType.MOVE_STRUCTURE, args: { id: 'Ghost Town', x: 5, y: 5 } } as const; const result = applyPatch(world, [command]); expect(result.success).toBe(false); expect(result.errors).toHaveLength(1); expect(result.errors[0].message).toBe('Structure not found: Ghost Town'); }); it('should ignore out-of-bounds coordinates for tile edits', () => { const command = { command: CommandType.EDIT_TILE, args: { x: 999, y: 999, elevation: 0 } } as const; // Should not throw, just ignore applyPatch(world, [command]); }); });