// decode given byte array into nativearray for chunk
static void DecodeChunk(byte[] buffer, int bytes, Chunk chunk)
{
var blocks = chunk.blocks;
var lights = chunk.lights; // just resetting this here
reader.Start(buffer, 0, uintBuffer, bytes);
chunk.builtStructures = reader.ReadBool();
#if ENABLE_UNITY_COLLECTIONS_CHECKS
var bh = AtomicSafetyHandle.Create();
NativeArrayUnsafeUtility.SetAtomicSafetyHandle(ref blocks, bh);
var lh = AtomicSafetyHandle.Create();
NativeArrayUnsafeUtility.SetAtomicSafetyHandle(ref lights, bh);
#endif
int i = 0;
while (i < blocks.Length)
{
byte type = reader.ReadByte();
byte run = reader.ReadByte();
while (run-- > 0)
{
blocks[i++] = new Block {
type = type
};
}
}
LightCalculator.InitializeLights(lights, chunk.GetWorldPos());
#if ENABLE_UNITY_COLLECTIONS_CHECKS
AtomicSafetyHandle.Release(bh);
AtomicSafetyHandle.Release(lh);
#endif
}
public static void Generate(Vector3 chunkWorldPos, NativeArray <Block> blocks, NativeArray <Light> lights)
{
// make this single loop instead and calculate x,y,z from index i
for (int y = 0; y < Chunk.SIZE; ++y)
{
for (int z = 0; z < Chunk.SIZE; ++z)
{
for (int x = 0; x < Chunk.SIZE; ++x)
{
Vector3 wp = new Vector3(x, y, z) / Chunk.BPU + chunkWorldPos + new Vector3(55.0f, 12.4f, 87.5f);
float n = 0.0f;
// experiment with catlike coding noise some more
//NoiseSample samp = Noise.Sum(Noise.Simplex3D, wp, 0.015f, 5, 2.0f, 0.5f);
//float n = samp.value * 3.0f;
// TODO: convert shapes.cginc into c# equiv, and or get gen going on multiple thread (try job system!!!)
// this is adding a flat ground plane density at low strength, so as you go lower will slowly become solid
n -= Vector3.Dot(wp, Vector3.up) * 0.03f;
//n += Fractal(wp, 5, 0.01f);
float4 ng = Mth.FractalGrad(wp, 5, 0.01f);
n += ng.x;
Block b = Blocks.AIR;
if (n > 0.25f)
{
b = Blocks.STONE;
}
else if (n > 0.15f)
{
b = Blocks.STONE;
// todo switch to using math.dot
if (Vector3.Dot(Vector3.up, new Vector3(ng.y, ng.z, ng.w).normalized) < .7f)
{
b = Blocks.GRASS;
}
// trying to make grass not spawn on cliff edge...
//if (Mathf.Abs(samp.derivative.normalized.y) < 0.4f) {
// chunk.SetBlock(x, y, z, new BlockGrass());
//} else {
// chunk.SetBlock(x, y, z, new Block());
//}
}
if (b == Blocks.STONE)
{
float coal = Mth.Billow(wp + new Vector3(1000, 722, 255), 2, 0.04f, 1, 0.6f);
if (coal > 0.0f)
{
b = Blocks.COAL;
}
}
// add caves
if (b != Blocks.AIR)
{
// octaves of 5 and 0.015 was pretty good too
n = Mth.Ridged(wp + new Vector3(500, -5000, 1000), 4, 0.01f);
if (n > 0.75f - math.abs(wp.y) * 0.001f) // as you go deeper caves open up is the idea here
{
b = Blocks.AIR;
}
}
// for testing singular blocks
//if (b != Blocks.COAL) {
// b = Blocks.AIR;
//}
blocks[x + z * Chunk.SIZE + y * Chunk.SIZE * Chunk.SIZE] = b;
}
}
}
LightCalculator.InitializeLights(lights, chunkWorldPos);
}