public void Execute()
{
NativeArray <float3> verts = new NativeArray <float3>(4, Allocator.Temp);
NativeArray <float2> uv = new NativeArray <float2>(4, Allocator.Temp);
NativeArray <int> triangles = new NativeArray <int>(6, Allocator.Temp);
NativeArray <bool> drawFace = new NativeArray <bool>(6, Allocator.Temp);
NativeArray <bool> flipFace = new NativeArray <bool>(6, Allocator.Temp);
NativeArray <short> nearbyLiquidSourceDistance = new NativeArray <short>(4, Allocator.Temp);
for (int x = 1; x < WorldSettings.ChunkSizeXZ + 1; x++)
{
for (int z = 1; z < WorldSettings.ChunkSizeXZ + 1; z++)
{
for (int y = 0; y < WorldSettings.ChunkSizeY; y++)
{
int index = Utils.BlockPosition3DtoIndex(x, y, z);
BlockType blockType = blocks[index];
if (blockType == BlockType.AIR)
{
continue;
}
int3 blockPos = new int3(x - 1, y, z - 1);
int numFaces = 0;
BlockStructure block = WorldData.GetBlockData(blockType);
short param = 0;
// assign default values
ref var verticles = ref blockVerticles;
ref var uvs = ref blockUVs;
ref var tris = ref blockTriangles;
// check for visible faces
switch (block.shape)
{
case BlockShape.LIQUID:
verticles = ref liquidVerticles;
uvs = ref liquidUVs;
tris = ref liquidTriangles;
// set to full by default to not save full blocks in game saves
if (!blockParameters.TryGetValue(new BlockParameter(new int3(x, y, z), ParameterType.WATER_SOURCE_DISTANCE), out param))
{
param = 8;
}
BlockstateLiquid(drawFace, index, x, y, z);
break;
case BlockShape.HALF_BLOCK:
blockParameters.TryGetValue(new BlockParameter(new int3(x, y, z), ParameterType.ROTATION), out param);
BlockstateSolidHalf(drawFace, index, x, y, z, param);
break;
case BlockShape.GRASS:
verticles = ref plantsVerticles;
uvs = ref plantsUVs;
tris = ref plantsTriangles;
blockParameters.TryGetValue(new BlockParameter(new int3(x, y, z), ParameterType.BLOCK_TYPE), out param);
BlockstateGrass(drawFace, index, x, y, z);
break;
default:
BlockstateSolid(drawFace, index, x, y, z);
break;
}
// draw faces
if (block.shape == BlockShape.LIQUID)
{
short value;
for (int i = 0; i < 6; i++)
{
if (!drawFace[i])
{
continue;
}
// R L F B
nearbyLiquidSourceDistance[0] = blockParameters.TryGetValue(new BlockParameter(new int3(x + 1, y, z), ParameterType.WATER_SOURCE_DISTANCE), out value) ? value : (short)0;
nearbyLiquidSourceDistance[1] = blockParameters.TryGetValue(new BlockParameter(new int3(x - 1, y, z), ParameterType.WATER_SOURCE_DISTANCE), out value) ? value : (short)0;
nearbyLiquidSourceDistance[2] = blockParameters.TryGetValue(new BlockParameter(new int3(x, y, z + 1), ParameterType.WATER_SOURCE_DISTANCE), out value) ? value : (short)0;
nearbyLiquidSourceDistance[3] = blockParameters.TryGetValue(new BlockParameter(new int3(x, y, z - 1), ParameterType.WATER_SOURCE_DISTANCE), out value) ? value : (short)0;
bool reverse = block.GetWaterShape((BlockFace)i, blockPos, verts, uv, param, nearbyLiquidSourceDistance);
verticles.AddRange(verts);
uvs.AddRange(uv);
flipFace[numFaces] = reverse;
numFaces++;
}
}
else
{
for (int i = 0; i < 6; i++)
{
if (!drawFace[i])
{
continue;
}
bool reverse = block.GetBlockShape((BlockFace)i, blockPos, verts, uv, param);
verticles.AddRange(verts);
uvs.AddRange(uv);
flipFace[numFaces] = reverse;
numFaces++;
}
}
// triangles
int tl = verticles.Length - 4 * numFaces;
for (int i = 0; i < numFaces; i++)
{
if (flipFace[i])
{
triangles[5] = tl + i * 4;
triangles[4] = tl + i * 4 + 1;
triangles[3] = tl + i * 4 + 2;
triangles[2] = tl + i * 4;
triangles[1] = tl + i * 4 + 2;
triangles[0] = tl + i * 4 + 3;
}
else
{
triangles[0] = tl + i * 4;
triangles[1] = tl + i * 4 + 1;
triangles[2] = tl + i * 4 + 2;
triangles[3] = tl + i * 4;
triangles[4] = tl + i * 4 + 2;
triangles[5] = tl + i * 4 + 3;
}
tris.AddRange(triangles);
}
}
