public static bool CheckCollision(Vector3 point)
{
Vector2 chunkPosition = new Vector2((int)point.X / SubChunk.WIDTH, (int)point.Z / SubChunk.DEPTH);
Vector3 localPosition = new Vector3((int)point.X - (chunkPosition.X * SubChunk.WIDTH),
(int)point.Y,
(int)point.Z - (chunkPosition.Y * SubChunk.DEPTH));
// Offset
localPosition += new Vector3(0.5f, 0.5f, 0.5f);
Vector3 chunkPos3 = new Vector3(chunkPosition.X, 0, chunkPosition.Y);
var m = Mouse.GetState();
if (localPosition.Y > Chunk.MAX_BLOCK_HEIGHT - 1 || localPosition.Y < 0)
{
return(false);
}
if (point.X < 0)
{
if (point.X % SubChunk.WIDTH != 0)
{
chunkPosition.X = (int)point.X / SubChunk.WIDTH - 1;
}
localPosition.X = point.X - (SubChunk.WIDTH * chunkPosition.X);
}
if (point.Z < 0)
{
if (point.Z % SubChunk.DEPTH != 0)
{
chunkPosition.Y = (int)point.Z / SubChunk.DEPTH - 1;
}
localPosition.Z = point.Z - (SubChunk.WIDTH * chunkPosition.Y);
}
if (IsChunkLoaded(chunkPosition))
{
Chunk chunk = LoadedChunks[chunkPosition];
return(chunk.GetBlock(localPosition) != Blocks.Air);
}
return(false);
}
public static bool IsPointColliding(Vector3 point)
{
Vector2 chunkPosition = new Vector2((int)point.X / SubChunk.WIDTH, (int)point.Z / SubChunk.WIDTH);
Vector3 localPosition = new Vector3((int)point.X - (chunkPosition.X * SubChunk.WIDTH),
(int)point.Y,
(int)point.Z - (chunkPosition.Y * SubChunk.DEPTH));
// Offset
localPosition += new Vector3(0.5f, 0.5f, 0.5f);
Vector3 chunkPos3 = new Vector3(chunkPosition.X, 0, chunkPosition.Y);
if (localPosition.Y > 255 || localPosition.Y < 0)
{
return(false);
}
if (point.X < 0)
{
if (point.X % SubChunk.WIDTH != 0)
{
chunkPosition.X = (int)point.X / SubChunk.WIDTH - 1;
}
localPosition.X = point.X - (SubChunk.WIDTH * chunkPosition.X);
}
if (point.Z < 0)
{
if (point.Z % SubChunk.DEPTH != 0)
{
chunkPosition.Y = (int)point.Z / SubChunk.DEPTH - 1;
}
localPosition.Z = point.Z - (SubChunk.DEPTH * chunkPosition.Y);
}
if (IsChunkLoaded(chunkPosition))
{
Chunk chunk = LoadedChunks[chunkPosition];
// Collision!
return(chunk.GetBlock(localPosition) != Blocks.Air);
}
return(false);
}
public static CollisionResult?RaycastCollision(Raycast ray)
{
Vector3 startPoint = ray.Start;
Vector3 endPoint = ray.End;
float length = Vector3.Distance(startPoint, endPoint);
for (int i = 0; i < length * 8; i++)
{
Vector3 point = Vector3.Lerp(startPoint, endPoint, (i / 8f) / (length));
Vector2 chunkPosition = new Vector2((int)point.X / SubChunk.WIDTH, (int)point.Z / SubChunk.DEPTH);
Vector3 localPosition = new Vector3((int)point.X - (chunkPosition.X * SubChunk.DEPTH),
(int)point.Y,
(int)point.Z - (chunkPosition.Y * SubChunk.DEPTH));
// Offset
localPosition += new Vector3(0.5f, 0.5f, 0.5f);
Vector3 chunkPos3 = new Vector3(chunkPosition.X, 0, chunkPosition.Y);
if (localPosition.Y > Chunk.HEIGHT * SubChunk.HEIGHT - 1 || localPosition.Y < 0)
{
return(null);
}
if (point.X < 0)
{
if (point.X % SubChunk.WIDTH != 0)
{
chunkPosition.X = (int)point.X / SubChunk.WIDTH - 1;
}
localPosition.X = point.X - (SubChunk.WIDTH * chunkPosition.X);
}
if (point.Z < 0)
{
if (point.Z % SubChunk.DEPTH != 0)
{
chunkPosition.Y = (int)point.Z / SubChunk.DEPTH - 1;
}
localPosition.Z = point.Z - (SubChunk.DEPTH * chunkPosition.Y);
}
if (IsChunkLoaded(chunkPosition))
{
Chunk chunk = LoadedChunks[chunkPosition];
// Collision!
Blocks blockType = chunk.GetBlock(localPosition);
if (blockType != Blocks.Air)
{
CollisionResult result = new CollisionResult()
{
GlobalPosition = point,
VoxelPosition = localPosition + (chunkPos3 * SubChunk.WIDTH),
BlockType = blockType
};
return(result);
}
}
}
return(null);
}