81 lines
2.4 KiB
JavaScript
81 lines
2.4 KiB
JavaScript
import { expect } from "@esm-bundle/chai";
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import { VoxelGrid } from "../../src/grid/VoxelGrid.js";
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import { RuinGenerator } from "../../src/generation/RuinGenerator.js";
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describe("System: Procedural Generation (Scatter)", () => {
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let grid;
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beforeEach(() => {
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grid = new VoxelGrid(20, 5, 20);
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});
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it("CoA 1: scatterCover should place objects on valid floors", () => {
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const gen = new RuinGenerator(grid, 12345);
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// 1. Generate empty rooms first
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// Note: RuinGenerator runs applyTextures() automatically at the end of generate(),
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// so floor IDs will be 200+, not 1.
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gen.generate(1, 10, 10);
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// 2. Count empty floor tiles (Air above Solid)
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let floorCount = 0;
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for (let x = 0; x < 20; x++) {
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for (let z = 0; z < 20; z++) {
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// Check for Air at y=1
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const isAirAbove = grid.getCell(x, 1, z) === 0;
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// Check for ANY solid block at y=0 (Floor ID is likely 200+)
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const isSolidBelow = grid.getCell(x, 0, z) !== 0;
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if (isAirAbove && isSolidBelow) {
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floorCount++;
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}
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}
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}
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// 3. Scatter Cover (ID 10) at 50% density
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gen.scatterCover(10, 0.5);
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// 4. Count Cover
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let coverCount = 0;
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for (let x = 0; x < 20; x++) {
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for (let z = 0; z < 20; z++) {
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if (grid.getCell(x, 1, z) === 10) {
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coverCount++;
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}
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}
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}
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// Expect roughly 50% of the floor to be covered
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const expectedMin = Math.floor(floorCount * 0.4);
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const expectedMax = Math.ceil(floorCount * 0.6);
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expect(floorCount).to.be.greaterThan(0, "No floors were generated!");
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expect(coverCount).to.be.within(
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expectedMin,
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expectedMax,
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`Cover count ${coverCount} not within 40-60% of floor count ${floorCount}`
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);
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});
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it("CoA 2: scatterCover should NOT place objects in mid-air", () => {
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const gen = new RuinGenerator(grid, 12345);
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gen.generate();
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gen.scatterCover(10, 1.0); // 100% density to force errors if logic is wrong
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// Scan for floating cover
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for (let x = 0; x < 20; x++) {
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for (let z = 0; z < 20; z++) {
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for (let y = 1; y < 4; y++) {
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if (grid.getCell(x, y, z) === 10) {
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const below = grid.getCell(x, y - 1, z);
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// Cover must have something solid below it
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expect(below).to.not.equal(
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0,
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`Found floating cover at ${x},${y},${z}`
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);
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}
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}
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}
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}
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});
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});
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