44r0n7andClaude Opus 5.5
9937683a2c
- The roof is rescanned only in area columns that changed since the last scan: a quiet Huge world goes from 4.60 to 1.88 ms per scan (every 20 ticks). - The heat pass skips react() for solids and powders below their first reaction threshold: Huge world digging 2.54 -> 2.34 ms/tick, quiet 1.39 -> 1.18. - Every suite's output is identical apart from timing lines; seeds make the same worlds. - test/t_sim_optimizations.js checks the dirty roof against a full scan and the heat loop against the reference loop byte for byte. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
56 lines
2.2 KiB
JavaScript
56 lines
2.2 KiB
JavaScript
// Optimized paths must match the full roof scan and the original heat loop exactly.
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const fs = require('fs');
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const { load, suite, flatWorld } = require('./harness');
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const { run } = load();
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const { check, done } = suite();
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run(fs.readFileSync(__dirname + '/fixtures/heat-chunk.js', 'utf8'));
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// Partial areas and changes at area boundaries, including material appearing in empty sky.
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flatWorld(run, 99, 97, 80);
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run('RS = 123; bot.x = 45; bot.y = 30;');
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run(`
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const originalWeatherTick = weatherTick;
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weatherTick = function () {
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if (tick % 20 === 1) {
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const roof = roofY.slice(); updateRoof();
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if (!roof.every((v, x) => v === roofY[x])) globalThis.__roofMiss = (globalThis.__roofMiss || 0) + 1;
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}
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originalWeatherTick();
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};
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`);
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for (let k = 0; k < 200; k++) run(`
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setCell((12 + ${k} % 60) * W + (${k} * 31 % W), ${k} % 3 ? WATER : EMPTY, 18, 0);
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simTick();
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`);
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check('scheduled roof matches a full scan at area edges', !run('globalThis.__roofMiss'), run('globalThis.__roofMiss'));
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run('weatherTick = originalWeatherTick;');
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// Every material, threshold neighbours, fractional temperatures, burning, cold neighbours,
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// alternating heat scales, and partial areas exercise both random calls and Float32 stores.
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const snapshot = () => run(`JSON.stringify({
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arrays: [mat, temp, life, flags, hot, hotLvl, part, digp, seen].map(a => Array.from(new Uint8Array(a.buffer))),
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RS, stats, EV, brokenMachines
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})`);
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const setup = () => {
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flatWorld(run, 67, 65, 60);
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run(`{
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RS = 456; seen.fill(0); EV.length = 0; stats.ignitions = 0; brokenMachines = [];
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const ts = [-30, -0.5, 0, 0.5, 18, 97, 100, 260, 380, 600, 880, 1085, 1300, 1530, 1900];
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for (let i = 0; i < N; i++) {
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const m = (i * 37) % NMAT;
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mat[i] = m; temp[i] = ts[i % ts.length] + ((i % 3) - 1) * 0.001;
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life[i] = i % 256; flags[i] = i % 23 === 0 && FUEL[m] ? F_BURN : 0;
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}
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hot.fill(6); hot[0] = 0; hotLvl.fill(2); updateRoof();
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}`);
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};
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for (const scale of [1, 4]) {
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setup();
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run(`for (let c = 1; c < NCH; c++) referenceHeatChunk(c, ${scale});`);
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const expected = snapshot();
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setup();
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run(`for (let c = 1; c < NCH; c++) heatChunk(c, ${scale});`);
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check('heat matches original bytes and random state at scale ' + scale, snapshot() === expected);
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}
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done();
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