Multi-core simulation: grain movement and heat across a worker pool (t88 phase 3)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/sim/world.js

@@ -29,36 +29,41 @@ let seen = new Uint8Array(NMAT);
 let ledger = {};
 const stats = { dug: 0, moved: 0, placed: 0, ignitions: 0, cast: 0, bars: 0 };
 
-function emit(e) { if (EV.length < 400) EV.push(e); }
+function emit(e) { if (chunkWork) { chunkEvent('emit', e); return; } if (EV.length < 400) EV.push(e); }
 function bagCap() { return TANK_TIERS[player.tankTier].cap; }
 // Things count as discovered only when they happen near the player (or in the bag).
 // how: 'dig', 'pickup', 'melt', 'smelt', 'freeze', 'boil', 'ignite', 'burn', 'fire', 'blow', 'condense'
 function discover(m, x, y, from, how, T) {
   if (seen[m]) return;
   if (x !== undefined) { const dx = x - bot.x, dy = y - bot.y; if (dx * dx + dy * dy > 110 * 110) return; }
+  if (chunkWork) { chunkEvent('discover', m, x, y, from, how, T); return; }
   seen[m] = 1; emit({ t: 'discover', m, from: from || 0, how: how || '', T: T || 0 });
 }
 
+function sharedArray(Type, length) {
+  const Buffer = typeof SharedArrayBuffer === 'function' ? SharedArrayBuffer : ArrayBuffer;
+  return new Type(new Buffer(length * Type.BYTES_PER_ELEMENT));
+}
 function alloc(w, h) {
   resetDevConsole();
   W = w; H = h; N = w * h;
   fogAlloc();
   CW = Math.ceil(w / 32); CH = Math.ceil(h / 32); NCH = CW * CH;
-  cleatMask = new Uint8Array(N); cleatCells = [];
-  mat = new Uint8Array(N); temp = new Float32Array(N); life = new Uint8Array(N); flags = new Uint8Array(N);
-  stamp = new Uint8Array(N); part = new Uint8Array(N); mach = new Uint16Array(N); digp = new Uint8Array(N);
-  noiseB = new Uint8Array(N); bgm = new Uint8Array(N); airS = new Uint16Array(N); netId = new Uint16Array(N); isPow = new Uint8Array(N); occ = new Uint8Array(N);
-  BW = Math.ceil(w / BS); BH = Math.ceil(h / BS); NB = BW * BH; blockP = new Uint8Array(NB); blockV = new Uint8Array(NB); slopePhase = new Uint8Array(NB); filtersDirty = true; filterCfg = new Map(); procDirty = true; procState.clear(); rackState.clear();
+  cleatMask = sharedArray(Uint8Array, N); cleatCells = [];
+  mat = sharedArray(Uint8Array, N); temp = sharedArray(Float32Array, N); life = sharedArray(Uint8Array, N); flags = sharedArray(Uint8Array, N);
+  stamp = sharedArray(Uint8Array, N); part = sharedArray(Uint8Array, N); mach = sharedArray(Uint16Array, N); digp = sharedArray(Uint8Array, N);
+  noiseB = sharedArray(Uint8Array, N); bgm = sharedArray(Uint8Array, N); airS = sharedArray(Uint16Array, N); netId = sharedArray(Uint16Array, N); isPow = sharedArray(Uint8Array, N); occ = sharedArray(Uint8Array, N);
+  BW = Math.ceil(w / BS); BH = Math.ceil(h / BS); NB = BW * BH; blockP = sharedArray(Uint8Array, NB); blockV = sharedArray(Uint8Array, NB); slopePhase = sharedArray(Uint8Array, NB); filtersDirty = true; filterCfg = new Map(); procDirty = true; procState.clear(); rackState.clear();
   ents = []; flyers = []; ghostBlocks = new Map(); ghostMolds = []; treeBases = []; saplings = [];
   surfBase = Math.round(Math.min(h * 0.27, 175)); underD = h - surfBase; shallowD = 0; lapse = 0.36;
-  surfY = new Int16Array(w); roofY = new Int16Array(w); dirtY = new Int16Array(w); graniteY = new Int16Array(w); basaltY = new Int16Array(w); magmaY = new Int16Array(w);
-  AMB = new Float32Array(h);
+  surfY = sharedArray(Int16Array, w); roofY = sharedArray(Int16Array, w); dirtY = sharedArray(Int16Array, w); graniteY = sharedArray(Int16Array, w); basaltY = sharedArray(Int16Array, w); magmaY = sharedArray(Int16Array, w);
+  AMB = sharedArray(Float32Array, h);
   loadWakeOrder = loadWakePending = null; loadWakeIndex = 0;
-  renderDirty = new Uint8Array(NCH).fill(1);
-  cleatChunks = new Uint8Array(NCH);
-  awake = new Uint8Array(NCH); hot = new Uint8Array(NCH); hotLvl = new Uint8Array(NCH);
-  roofDirty = new Uint8Array(CW).fill(1);
-  powderArea = new Uint8Array(NCH).fill(1); // unknown areas get one visit before being ruled out
+  renderDirty = sharedArray(Uint8Array, NCH).fill(1);
+  cleatChunks = sharedArray(Uint8Array, NCH);
+  awake = sharedArray(Uint8Array, NCH); hot = sharedArray(Uint8Array, NCH); hotLvl = sharedArray(Uint8Array, NCH);
+  roofDirty = sharedArray(Uint8Array, CW).fill(1);
+  powderArea = sharedArray(Uint8Array, NCH).fill(1); // unknown areas get one visit before being ruled out
   machines = [null]; molds = []; nets = [null]; pcells = new Set(); powerDirty = true;
   beltL = []; beltR = []; screwLists = Array.from({ length: IS_SCREW.length }, () => []); brokenMachines = [];
   ghostMachines = []; ghostBlocked = new Set();
@@ -93,21 +98,26 @@ function fillNoise() {
 
 // ---------- Waking ----------
 function renderDirtyXY(x, y) { renderDirty[(y >> 5) * CW + (x >> 5)] = 1; }
+function renderDirtyChunk(c) {
+  const cx = c % CW, cy = (c / CW) | 0;
+  for (let yy = Math.max(0, cy - 1); yy <= Math.min(CH - 1, cy + 1); yy++)
+    for (let xx = Math.max(0, cx - 1); xx <= Math.min(CW - 1, cx + 1); xx++) renderDirty[yy * CW + xx] = 1;
+}
 function renderDirtyIdx(i) { renderDirtyXY(i % W, (i / W) | 0); }
 function wakeXY(x, y) {
-  renderDirtyXY(x, y);
   const cx = x >> 5, cy = y >> 5, c = cy * CW + cx;
+  if (!chunkWork) renderDirty[c] = 1;
   roofDirty[cx] = 1;
-  awake[c] = 3;
+  chunkWake(c);
   const lx = x & 31, ly = y & 31;
-  if (lx === 0) { if (cx > 0) awake[c - 1] = 3; } else if (lx === 31 && cx < CW - 1) awake[c + 1] = 3;
-  if (ly === 0) { if (cy > 0) awake[c - CW] = 3; } else if (ly === 31 && cy < CH - 1) awake[c + CW] = 3;
+  if (lx === 0) { if (cx > 0) chunkWake(c - 1); } else if (lx === 31 && cx < CW - 1) chunkWake(c + 1);
+  if (ly === 0) { if (cy > 0) chunkWake(c - CW); } else if (ly === 31 && cy < CH - 1) chunkWake(c + CW);
 }
 function wakeHeatXY(x, y) {
-  renderDirtyXY(x, y);
   const c = (y >> 5) * CW + (x >> 5);
+  if (!chunkWork) renderDirty[c] = 1;
   roofDirty[x >> 5] = 1;
-  hot[c] = 6; hotLvl[c] = 2;
+  chunkHeat(c);
 }
 function wakeIdx(i) { wakeXY(i % W, (i / W) | 0); }
 function wakeHeatIdx(i) { wakeHeatXY(i % W, (i / W) | 0); }