public override void initRendererAction(Vector3i vector)
{
Chunk chunk = world.viewableChunks[vector.X, vector.Z];
ChunkRenderer cRenderer = new SolidBoundsChunkRenderer(GraphicsDevice, world, chunk);
ChunkRenderers.Add(chunk.Index, cRenderer);
}
public override void DoBuild(Vector3i vector)
{
Chunk chunk = world.viewableChunks[vector.X, vector.Z];
// Build a vertex buffer for this chunks
chunk.Renderer.BuildVertexList();
// Add the renderer to the list so that it is drawn
ChunkRenderers.Add(chunk.Index, chunk.Renderer);
chunk.built = true;
}
public override void Update(GameTime gameTime)
{
uint x = (uint)camera.Position.X;
uint z = (uint)camera.Position.Z;
uint cx = x / Chunk.CHUNK_XMAX;
uint cz = z / Chunk.CHUNK_ZMAX;
uint lx = x % Chunk.CHUNK_XMAX;
uint lz = z % Chunk.CHUNK_ZMAX;
Vector3i currentChunkIndex = world.viewableChunks[cx, cz].Index; // This is the chunk in which the camera currently resides
// Loop through all possible chunks around the camera in both X and Z directions
for (uint j = cx - (World.VIEW_DISTANCE_FAR_X + 1); j < cx + (World.VIEW_DISTANCE_FAR_X + 1); j++)
{
for (uint l = cz - (World.VIEW_DISTANCE_FAR_Z + 1); l < cz + (World.VIEW_DISTANCE_FAR_Z + 1); l++)
{
int distancecx = (int)(cx - j); // The distance from the camera to the chunk in the X direction
int distancecz = (int)(cz - l); // The distance from the camera to the chunk in the Z direction
if (distancecx < 0)
{
distancecx = 0 - distancecx; // If the distance is negative (behind the camera) make it positive
}
if (distancecz < 0)
{
distancecz = 0 - distancecz; // If the distance is negative (behind the camera) make it positive
}
// Remove Chunks
if ((distancecx > World.VIEW_DISTANCE_NEAR_X) || (distancecz > World.VIEW_DISTANCE_NEAR_Z))
{
if ((world.viewableChunks[j, l] != null)) // Chunk is created, therefore remove
{
Vector3i newIndex = currentChunkIndex + new Vector3i((j - cx), 0, (l - cz)); // This is the chunk in the loop, offset from the camera
Chunk chunk = world.viewableChunks[j, l];
chunk.visible = false;
world.viewableChunks[j, l] = null;
ChunkRenderers.Remove(newIndex);
//Debug.WriteLine("Removed chunk at {0},{1},{2}", chunk.Position.X, chunk.Position.Y, chunk.Position.Z);
}
else
{
// Debug.WriteLine("[Remove] chunk not found at at {0},0,{1}", j, l);
}
}
// Build Chunks
else if ((distancecx > World.VIEW_CHUNKS_X) || (distancecz > World.VIEW_CHUNKS_Z))
{
if (world.viewableChunks[j, l] == null) // Chunk is not created, therefore create
{
Vector3i newIndex = currentChunkIndex + new Vector3i((j - cx), 0, (l - cz)); // This is the chunk in the loop, offset from the camera
Chunk toAdd = new Chunk(newIndex);
world.viewableChunks[newIndex.X, newIndex.Z] = toAdd;
world.builder.build(toAdd);
//Debug.WriteLine("Built chunk at {0},{1},{2}", toAdd.Position.X, toAdd.Position.Y, toAdd.Position.Z);
}
}
// Build Vertices
else
{
Chunk chunk = world.viewableChunks[j, l];
if ((!chunk.built) && (chunk.generated)) // Chunk is generated but vertices not built. Therefore build the vertices
{
Vector3i newIndex = currentChunkIndex + new Vector3i((j - cx), 0, (l - cz)); // This is the chunk in the loop, offset from the camera
initRendererAction(newIndex);
chunk.built = true;
//Debug.WriteLine("Built vertices at {0},{1},{2}", newIndex.X, newIndex.Y, newIndex.Z);
}
}
}
}
BoundingFrustum viewFrustum = new BoundingFrustum(camera.View * camera.Projection);
foreach (ChunkRenderer chunkRenderer in ChunkRenderers.Values)
{
if (chunkRenderer.isInView(viewFrustum))
{
chunkRenderer.update(gameTime);
}
}
}
