/// <summary>
/// Creates a new voxel chunk mesher.
/// </summary>
/// <param name="chunkProperties">The chunk properties to handle.</param>
/// <param name="greedyMesher">The greedy mesher to use.</param>
internal VoxelChunkMesher(ChunkGroup chunkProperties, GreedyMesher greedyMesher)
{
m_ChunkProperties = chunkProperties;
m_GreedyMesher = greedyMesher;
m_Mesh = new ProcMesh();
m_Task = Task.Run(Remesh);
}
/// <summary>
/// Iterates over all blocks in the chunk, creating visual tasks as needed.
/// </summary>
/// <param name="properties">The chunk properties.</param>
/// <param name="tasks">The task list to add to.</param>
private void VisualBlockIterator(ChunkGroup properties, RemeshTaskStack taskStack)
{
var volume = m_ChunkSize.Volume;
var blocks = properties.Blocks;
for (int i = 0; i < volume; i++)
{
var type = m_BlockList.GetBlockType(blocks[i]);
if (!type.Visible)
{
continue;
}
// TODO Make sure block type is a cube
for (int j = 0; j < type.FaceCount; j++)
{
var material = type.Face(j).MaterialID;
if (m_MaterialBuffer[material])
{
continue;
}
m_MaterialBuffer[material] = true;
taskStack.AddTask(new VisualRemeshTask(properties, material, PullMesher()));
}
}
}
/// <summary>
/// Analyses the given chunk and starts a set of remesh tasks for handling that chunk.
/// This method blocks until all remesh tasks have been completed.
/// </summary>
/// <param name="worldContainer">The world to operate on.</param>
/// <param name="chunkPos">The chunk target position.</param>
internal RemeshTaskStack RemeshChunk(WorldContainer worldContainer, ChunkPosition chunkPos)
{
var taskStack = new RemeshTaskStack(chunkPos);
var chunkGroup = new ChunkGroup(worldContainer, chunkPos);
foreach (var dis in m_Distributors)
{
dis.CreateTasks(chunkGroup, taskStack);
}
return(taskStack);
}
/// <summary>
/// Generates the collision remesh task, as needed.
/// </summary>
/// <param name="properties">The chunk properties.</param>
/// <param name="tasks">The task list to add to.</param>
private void GenerateCollision(ChunkGroup properties, RemeshTaskStack taskStack)
{
int volume = m_ChunkSize.Volume;
var blocks = properties.Blocks;
for (int i = 0; i < volume; i++)
{
var type = m_BlockList.GetBlockType(blocks[i]);
if (type.Solid)
{
taskStack.AddTask(new CollisionRemeshTask(properties, PullMesher()));
return;
}
}
}
/// <summary>
/// Generates the visual remeshing tasks, as needed.
/// </summary>
/// <param name="properties">The chunk properties.</param>
/// <param name="tasks">The task list to add to.</param>
private void GenerateVisuals(ChunkGroup properties, RemeshTaskStack taskStack)
{
PrepareMaterialBuffer();
VisualBlockIterator(properties, taskStack);
ResetMaterialBuffer();
}
/// <inheritdoc cref="IRemeshTask"/>
public void CreateTasks(ChunkGroup properties, RemeshTaskStack taskStack)
{
GenerateVisuals(properties, taskStack);
GenerateCollision(properties, taskStack);
}
/// <summary> /// Checks whether or not the given quad within the check should be added to the mesh. /// </summary> /// <param name="chunkProperties">The chunk properties to read from.</param> /// <param name="pos">The block position.</param> /// <param name="side">The side of the block being checked.</param> /// <returns>True if the quad should be placed. False otherwise.</returns> protected abstract bool CanPlaceQuad(ChunkGroup chunkProperties, BlockPosition pos, int side);