VertexPos3Tex2[] BuildTerrain(TerrainMap map, ref int totalTriangles)
{
TileDrawInfo drawInfo = new TileDrawInfo();
int lengthX = map.Width;
int lengthY = map.Length;
VertexPos3Tex2[] vertices = new VertexPos3Tex2[lengthX * lengthY * 4];
int index = 0;
for (int x = 0; x < lengthX; x++)
{
for (int y = 0; y < lengthY; y++)
{
Tile tile = map[x, y];
drawInfo.CurrentTile = tile;
drawInfo.MapX = x;
drawInfo.MapY = y;
RenderTile(drawInfo, vertices, index);
index += 4;
}
} // end for
totalTriangles = drawInfo.TotalTriangles;
return(vertices);
}
void RenderTile(TileDrawInfo drawInfo, VertexPos3Tex2[] vertices, int index)
{
Tile tile = drawInfo.CurrentTile;
X = tile.X;
Y = tile.Y;
height = tile.Height;
RectangleF texRec = TerrainHelper.GetTexRec(tile.TerrainId);
vertices[index] = new VertexPos3Tex2(X, height, Y, texRec.Left, texRec.Top);
vertices[index + 1] = new VertexPos3Tex2(X + tileWidth, height, Y, texRec.Right, texRec.Top);
vertices[index + 2] = new VertexPos3Tex2(X + tileWidth, height, Y + tileWidth, texRec.Right, texRec.Bottom);
vertices[index + 3] = new VertexPos3Tex2(X, height, Y + tileWidth, texRec.Left, texRec.Bottom);
drawInfo.TotalTriangles += 2;
}
