// Many loaded slopes, with a fresh deterministic world for each timing sample.
const { performance } = require('perf_hooks');
const { load, flatWorld } = require(process.env.DG_HARNESS || '../../test/harness');
const { run } = load();
const assert = require('node:assert/strict');
const samples=[];
for(let sample=0;sample<6;sample++) {
  flatWorld(run,1024,512,496);
  run(`RS=7;money=1e9;AMB.fill(20);temp.fill(20);hot.fill(0);
    for(let row=0;row<6;row++)for(let col=0;col<8;col++)for(let k=0;k<12;k++){
      const bx=col*30+4+k,by=row*18+35-k;
      placeBlock(BP_BELT_UP,1,bx,by,true);
      for(let x=bx*4;x<bx*4+4;x++){const y=beltFaceY(BP_BELT_UP,bx,by,x);for(let h=1;h<=4;h++)setCell((y-h)*W+x,SAND,20,0);}
    }
    for(let k=0;k<60;k++)simTick();`);
  const start=performance.now();run('for(let k=0;k<240;k++)simTick();');
  if(sample) samples.push((performance.now()-start)/240);
}
assert(samples.length===5 && samples.every(n=>Number.isFinite(n) && n>0));
samples.sort((a,b)=>a-b);
console.log(`576 loaded slope blocks, median ${samples[2].toFixed(3)} ms/tick; samples ${samples.map(v=>v.toFixed(3)).join(', ')}`);

// No slopes: use the zero flag supplied once per chunk by simMove. Older powder ignores it.
flatWorld(run,512,384,376);
run('RS=7;for(let y=32;y<350;y+=2)for(let x=32;x<480;x++){mat[y*W+x]=SAND;mat[(y+1)*W+x]=STONE;}');
const powderSamples=[];
for(let sample=0;sample<6;sample++) {
  const start=performance.now();
  run('for(let k=0;k<30;k++)for(let y=32;y<350;y+=2)for(let x=32;x<480;x++)powder(y*W+x,x,y,SAND,0);');
  if(sample)powderSamples.push(performance.now()-start);
}
assert(powderSamples.length===5 && powderSamples.every(n=>Number.isFinite(n) && n>0));
powderSamples.sort((a,b)=>a-b);
console.log(`2.14M powder calls without cleats, median ${powderSamples[2].toFixed(2)} ms`);

// Generated terrain plus a replenished falling sand curtain, with zero or 50 slope blocks.
for (const slopes of [0, 50]) {
  const times = [];
  for (let sample = 0; sample < 6; sample++) {
    run(`generateWorld(12345, 1024, 640); weather.next=1e15; money=1e9;
      for(let y=16;y<160;y++)for(let x=80;x<480;x++)setCell(y*W+x,EMPTY,AMB[y],0);
      for(let k=0;k<${slopes};k++) {const bx=25+(k%10),by=32+Math.floor(k/10)*5-(k%10);
        placeBlock(BP_BELT_UP,1,bx,by,true);}
      for(let t=0;t<60;t++){for(let x=80;x<480;x++)if(mat[16*W+x]===EMPTY)setCell(16*W+x,SAND,AMB[16],0);simTick();}`);
    const start = performance.now();
    run(`for(let t=0;t<180;t++){for(let x=80;x<480;x++)if(mat[16*W+x]===EMPTY)setCell(16*W+x,SAND,AMB[16],0);simTick();}`);
    if (sample) times.push((performance.now()-start)/180);
  }
  assert(times.every(n=>Number.isFinite(n) && n>0)); times.sort((a,b)=>a-b);
  console.log(`generated falling world, ${slopes} slopes: ${times[2].toFixed(3)} ms/tick; ${times.map(n=>n.toFixed(3)).join(', ')}`);
}