func (ct *CaveTest) block(bc coords.Block, height int) mapgen.Block {
if bc.X == 0 && bc.Y == 16 && bc.Z == 0 {
return mapgen.BLOCK_SPAWN
}
if bc.Y > height {
return mapgen.BLOCK_AIR
}
// Calculate a cave
xf, yf, zf := bc.Float64()
ridge1 := ct.ridgedFilter.Filter(xf, yf, zf, ct.simplexNoise)
ridge2 := ct.ridgedFilter.Filter(xf, yf, zf, ct.simplexNoise2)
if ridge1 >= 0.95 {
ridge1 = 1
} else {
ridge1 = 0
}
if ridge2 >= 0.95 {
ridge2 = 1
} else {
ridge2 = 0
}
if ridge1*ridge2 == 1 {
if DEBUG {
return mapgen.BLOCK_STONE
}
return mapgen.BLOCK_AIR
}
if bc.Y == height {
if DEBUG {
return mapgen.BLOCK_GLASS
}
return mapgen.BLOCK_GRASS
}
if DEBUG {
return mapgen.BLOCK_AIR
}
if bc.Y < height-3 {
return mapgen.BLOCK_STONE
}
if height > bc.Y {
return mapgen.BLOCK_DIRT
}
return mapgen.BLOCK_AIR
}
