private void GenerateTrees()
{
float simplex1 = noise.GetSimplex(chunkPosX * .3f, chunkPosZ * .3f);
float simplex2 = noise.GetSimplex(chunkPosX * 2f, chunkPosZ * 2f);
float value = (simplex1 + simplex2) / 2;
if (value > 0)
{
int minpos = 4;
int maxpos = ChunkSizeXZ - 5;
NativeList <int2> treePositions = new NativeList <int2>(MaxTreesPerChunk, Allocator.Temp);
for (int i = 0; i < MaxTreesPerChunk; i++)
{
int x = random.NextInt(minpos, maxpos);
int z = random.NextInt(minpos, maxpos);
BiomeType biomeType = biomeTypes[Utils.BlockPosition2DtoIndex(x, z)];
// TODO: bool CanPlaceTree(BiomeType type)
if (biomeType != BiomeType.FOREST && biomeType != BiomeType.PLAINS)
{
continue;
}
bool doContinue = false;
for (int j = 0; j < treePositions.Length; j++)
{
int2 pos = treePositions[j];
if (math.sqrt((pos.x - x) * (pos.x - x) + (pos.y - x) * (pos.y - x)) < MinDistanceBetweenTrees)
{
doContinue = true;
break;
}
}
if (doContinue)
{
continue;
}
int y = ChunkSizeY - TreeHeightRange.x;
if (blockData[Utils.BlockPosition3DtoIndex(x, y, z)] != BlockType.AIR)
{
continue; // continue if maxTerrainHeigth - minTreeHeigth hits ground
}
// find ground position
while (y > 0 && blockData[Utils.BlockPosition3DtoIndex(x, y, z)] == BlockType.AIR)
{
y--;
}
BlockType groundBlock = blockData[Utils.BlockPosition3DtoIndex(x, y, z)];
if (!WorldData.CanPlaceTree(groundBlock))
{
continue; // continue if cant place tree on ground block
}
// add position to position list
treePositions.Add(new int2(x, z));
TreeSettings treeSettings = Trees.OakTree;
// place logs
int treeHeight = random.NextInt(treeSettings.TreeHeightRange.x, treeSettings.TreeHeightRange.y);
for (int j = 0; j < treeHeight; j++)
{
if (y + j < ChunkSizeY)
{
blockData[Utils.BlockPosition3DtoIndex(x, y + j, z)] = BlockType.OAK_LOG;
}
}
int treeTop = y + treeHeight - 1;
int index, xrange, zrange;
// <0, 1>
xrange = 1;
zrange = 1;
for (int _y = treeTop; _y <= treeTop + 1; _y++)
{
for (int _x = -xrange; _x <= xrange; _x++)
{
for (int _z = -zrange; _z <= zrange; _z++)
{
index = Utils.BlockPosition3DtoIndex(x + _x, _y, z + _z);
if (blockData[index] == BlockType.AIR)
{
blockData[index] = BlockType.OAK_LEAVES;
}
}
}
// x- z-
if (random.NextBool() && AreTypesEqual(BlockType.OAK_LEAVES, x - xrange, _y, z - zrange, out index))
{
blockData[index] = BlockType.AIR;
}
// x- z+
if (random.NextBool() && AreTypesEqual(BlockType.OAK_LEAVES, x - xrange, _y, z + zrange, out index))
{
blockData[index] = BlockType.AIR;
}
// x+ z-
if (random.NextBool() && AreTypesEqual(BlockType.OAK_LEAVES, x + xrange, _y, z - zrange, out index))
{
blockData[index] = BlockType.AIR;
}
// x+ z+
if (random.NextBool() && AreTypesEqual(BlockType.OAK_LEAVES, x + xrange, _y, z + zrange, out index))
{
blockData[index] = BlockType.AIR;
}
}
// <-1, -2>
xrange = 2;
zrange = 2;
for (int _y = treeTop - 2; _y <= treeTop - 1; _y++)
{
for (int _x = -xrange; _x <= xrange; _x++)
{
for (int _z = -zrange; _z <= zrange; _z++)
{
index = Utils.BlockPosition3DtoIndex(x + _x, _y, z + _z);
if (blockData[index] == BlockType.AIR)
{
blockData[index] = BlockType.OAK_LEAVES;
}
}
}
// x- z-
if (random.NextBool() && AreTypesEqual(BlockType.OAK_LEAVES, x - xrange, _y, z - zrange, out index))
{
blockData[index] = BlockType.AIR;
}
// x- z+
if (random.NextBool() && AreTypesEqual(BlockType.OAK_LEAVES, x - xrange, _y, z + zrange, out index))
{
blockData[index] = BlockType.AIR;
}
// x+ z-
if (random.NextBool() && AreTypesEqual(BlockType.OAK_LEAVES, x + xrange, _y, z - zrange, out index))
{
blockData[index] = BlockType.AIR;
}
// x+ z+
if (random.NextBool() && AreTypesEqual(BlockType.OAK_LEAVES, x + xrange, _y, z + zrange, out index))
{
blockData[index] = BlockType.AIR;
}
}
// <-3, -3>
xrange = 1;
zrange = 1;
for (int _y = treeTop - 3; _y <= treeTop - 3; _y++)
{
for (int _x = -xrange; _x <= xrange; _x++)
{
for (int _z = -zrange; _z <= zrange; _z++)
{
index = Utils.BlockPosition3DtoIndex(x + _x, _y, z + _z);
if (blockData[index] == BlockType.AIR)
{
blockData[index] = BlockType.OAK_LEAVES;
}
}
}
// x- z-
if (random.NextBool() && AreTypesEqual(BlockType.OAK_LEAVES, x - xrange, _y, z - zrange, out index))
{
blockData[index] = BlockType.AIR;
}
// x- z+
if (random.NextBool() && AreTypesEqual(BlockType.OAK_LEAVES, x - xrange, _y, z + zrange, out index))
{
blockData[index] = BlockType.AIR;
}
// x+ z-
if (random.NextBool() && AreTypesEqual(BlockType.OAK_LEAVES, x + xrange, _y, z - zrange, out index))
{
blockData[index] = BlockType.AIR;
}
// x+ z+
if (random.NextBool() && AreTypesEqual(BlockType.OAK_LEAVES, x + xrange, _y, z + zrange, out index))
{
blockData[index] = BlockType.AIR;
}
}
}
}
}