internal static int Generate(int posX, int posY, int size)
{
float maxHeightVar = 20, minHeightVar = -3;
int lastHeight = 0;
Func <float> heightsGen = new Func <float>(delegate() {
return(MathUtil.RandFloat(TerrainGen.rand, minHeightVar, maxHeightVar));
});
float v1 = posY, v2 = v1, v3 = v2 + heightsGen(), v4 = v3 + heightsGen();
int mountainCounter = 0;
int mountainDist = MathUtil.RandInt(TerrainGen.rand, 30, 150);
int treeCounter = 0;
int treeDist = MathUtil.RandInt(TerrainGen.rand, 10, 30);
for (int i = 0; i < size; i++)
{
for (int j = 0; j < TerrainGen.widthfactor; j++)
{
int y = MathUtil.CatmullRomCubicInterpolate(v1, v2, v3, v4, (float)j / TerrainGen.widthfactor);
lastHeight = y;
int x = posX + i * TerrainGen.widthfactor + j;
for (int k = 0; k <= y; k++)
{
if (k <= y - 3 + MathUtil.RandDouble(TerrainGen.rand, 0, 2))
{
Terrain.SetTile(x, k, Tile.Stone, true);
}
else if (k <= y - 2 + MathUtil.RandDouble(TerrainGen.rand, 0, 2))
{
Terrain.SetTile(x, k, Tile.Dirt, true);
}
else
{
Terrain.SetTile(x, k, Tile.Grass, true);
}
}
mountainCounter++;
if (mountainCounter == mountainDist / 2 || y < TerrainGen.minlandheight)
{
maxHeightVar *= -1;
minHeightVar *= -1;
}
if (mountainCounter == mountainDist)
{
mountainCounter = 0;
mountainDist = MathUtil.RandInt(TerrainGen.rand, 30, 50);
}
treeCounter++;
if (treeCounter == treeDist)
{
Nature.GenerateTree(x, y + 1);
treeCounter = 0;
treeDist = MathUtil.RandInt(TerrainGen.rand, 10, 30);
}
}
v1 = v2;
v2 = v3;
v3 = v4;
v4 = v3 + heightsGen();
}
return(lastHeight);
}