/// <summary>
/// Move worms
/// </summary>
public override bool DoWork(long endTime)
{
int count = worms.Count;
if (count == 0)
{
return(false);
}
for (int k = 0; k < count; k++)
{
env.STAGE = 3000;
HoleWorm worm = worms [k];
uint xx = (uint)worm.head.x % texSize;
worm.ax += noiseValues [xx];
if (worm.ax > 1f)
{
worm.ax = 1f;
}
else if (worm.ax < -1f)
{
worm.ax = -1f;
}
worm.head.x += worm.ax;
uint yy = (uint)worm.head.y % texSize;
worm.ay += noiseValues [yy];
if (worm.ay > 1f)
{
worm.ay = 1f;
}
else if (worm.ay < -1f)
{
worm.ay = -1f;
}
worm.head.y += worm.ay;
uint zz = (uint)worm.head.z % texSize;
worm.az += noiseValues [zz];
if (worm.az > 1f)
{
worm.az = 1f;
}
else if (worm.az < -1f)
{
worm.az = -1f;
}
worm.head.z += worm.az;
int ix = (int)(worm.head.x);
int iy = (int)(worm.head.y);
int iz = (int)(worm.head.z);
env.STAGE = 3001;
if (ix != worm.lastX || iy != worm.lastY || iz != worm.lastZ)
{
worm.lastX = ix;
worm.lastY = iy;
worm.lastZ = iz;
// keep this order of assignment to improve randomization
int minx = ix - (caveBorder++ & 5);
int miny = iy - (caveBorder++ & 5);
int maxx = ix + (caveBorder++ & 5);
int minz = iz - (caveBorder++ & 5);
int maxy = iy + (caveBorder++ & 5);
int maxz = iz + (caveBorder++ & 5);
int mx = (maxx + minx) / 2;
int my = (maxy + miny) / 2;
int mz = (maxz + minz) / 2;
VoxelChunk chunk = null;
int lastChunkX = int.MinValue, lastChunkY = int.MinValue, lastChunkZ = int.MinValue;
for (int y = miny; y < maxy; y++)
{
int chunkY = FastMath.FloorToInt(y / 16f);
int py = (int)(y - chunkY * 16);
int voxelIndexY = py * ONE_Y_ROW;
for (int z = minz; z < maxz; z++)
{
int chunkZ = FastMath.FloorToInt(z / 16f);
int pz = (int)(z - chunkZ * 16);
int voxelIndexZ = voxelIndexY + pz * ONE_Z_ROW;
for (int x = minx; x < maxx; x++)
{
int dx = x - mx;
int dy = y - my;
int dz = z - mz;
if (dx * dx + dy * dy + dz * dz > 23)
{
continue;
}
int chunkX = FastMath.FloorToInt(x / 16f);
if (chunkX != lastChunkX || chunkY != lastChunkY || chunkZ != lastChunkZ)
{
lastChunkX = chunkX;
lastChunkY = chunkY;
lastChunkZ = chunkZ;
env.STAGE = 3004;
chunk = env.GetChunkUnpopulated(chunkX, chunkY, chunkZ);
env.STAGE = 3005;
if (chunk.isPopulated)
{
worm.life = 0;
y = maxy;
z = maxz;
break;
}
// mark the chunk as modified by this detail generator
SetChunkIsDirty(chunk);
}
int px = (int)(x - chunkX * 16);
int voxelIndex = voxelIndexZ + px;
chunk.voxels [voxelIndex].hasContent = 2;
}
}
}
worm.life--;
if (worm.life <= 0)
{
env.STAGE = 3007;
worms.RemoveAt(k);
env.STAGE = 0;
return(true);
}
}
worms [k] = worm;
long elapsed = env.stopWatch.ElapsedMilliseconds;
if (elapsed >= endTime)
{
break;
}
}
env.STAGE = 0;
return(true);
}
