/// <summary>
/// Creates the mesh data for the block at the given internal position within the chunk at the given chunk position.
/// </summary>
/// <param name="block">The block to create mesh for.</param>
/// <param name="internalPos">The internal position of the block to create a mesh for.</param>
/// <param name="chunkPos">The chunk position of the block to create a mesh for.</param>
/// <returns>Returns the mesh data created for the block.</returns>
public static MeshData CreateMesh(Block block, Vector3Int internalPos, Vector3Int chunkPos)
{
MeshData meshData = new MeshData();
bool bottomVis = CheckFaceVisibility(internalPos, chunkPos, Side.Bottom, out _);
bool topVis = CheckFaceVisibility(internalPos, chunkPos, Side.Top, out _);
bool frontVis = CheckFaceVisibility(internalPos, chunkPos, Side.Front, out _);
bool backVis = CheckFaceVisibility(internalPos, chunkPos, Side.Back, out _);
bool leftVis = CheckFaceVisibility(internalPos, chunkPos, Side.Left, out _);
bool rightVis = CheckFaceVisibility(internalPos, chunkPos, Side.Right, out _);
// Bottom Face
if (bottomVis)
{
meshData.Merge(new MeshData(bottomFaceVerts, bottomFaceTriangles, UVMap.GetUVs(block.BlockName), defaultUVs));
}
// Top Face
if (topVis)
{
meshData.Merge(new MeshData(topFaceVerts, topFaceTriangles, UVMap.GetUVs(block.BlockName), defaultUVs));
}
// Front Face
if (frontVis)
{
meshData.Merge(new MeshData(frontFaceVerts, frontFaceTriangles, UVMap.GetUVs(block.BlockName), defaultUVs));
}
// Back Face
if (backVis)
{
meshData.Merge(new MeshData(backFaceVerts, backFaceTriangles, UVMap.GetUVs(block.BlockName), defaultUVs));
}
// Left Face
if (leftVis)
{
meshData.Merge(new MeshData(leftFaceVerts, leftFaceTriangles, UVMap.GetUVs(block.BlockName), defaultUVs));
}
// Right Face
if (rightVis)
{
meshData.Merge(new MeshData(rightFaceVerts, rightFaceTriangles, UVMap.GetUVs(block.BlockName), defaultUVs));
}
meshData.OffsetPosition(new Vector3(internalPos.x - 0.5f, internalPos.y - 0.5f, internalPos.z - 0.5f));
return(meshData);
}
/// <summary>
/// Creates the mesh data for the block at the given internal position within the chunk at the given chunk position.
/// </summary>
/// <param name="block">The block type to create mesh for.</param>
/// <param name="internalPos">The internal position of the block to create a mesh for.</param>
/// <param name="chunkPos">The chunk position of the block to create a mesh for.</param>
/// <returns>Returns the mesh data created for the block.</returns>
public static MeshData CreateMesh(Block block, Vector3Int internalPos, Vector3Int chunkPos)
{
// TODO: Add support for block rotation so blocks with different faces can be placed in any orientation, or at least additional orientations.
// TODO: Add lighting data into UV2 for mesh and use it in shader to determine brightness of texture.
MeshData meshData = new MeshData();
bool topVis = CheckFaceVisibility(internalPos, chunkPos, Side.Top, out _);
bool bottomVis = CheckFaceVisibility(internalPos, chunkPos, Side.Bottom, out _);
bool frontVis = CheckFaceVisibility(internalPos, chunkPos, Side.Front, out _);
bool backVis = CheckFaceVisibility(internalPos, chunkPos, Side.Back, out _);
bool rightVis = CheckFaceVisibility(internalPos, chunkPos, Side.Right, out _);
bool leftVis = CheckFaceVisibility(internalPos, chunkPos, Side.Left, out _);
Vector3Int worldPos = internalPos.InternalPosToWorldPos(chunkPos);
int rotation = Mathf.RoundToInt(GameManager.Instance.CaveWormPositionNoiseGenerator.GetNoise(worldPos.x, worldPos.y, worldPos.z).Remap(-1, 1, 0, 3));
BlockType blockType = BlockType.BlockTypes[block.ID];
// Top Face
if (topVis)
{
string uvName = ((blockType.UniqueFaces & BlockType.UniqueFacesEnum.Top) == BlockType.UniqueFacesEnum.Top) ? blockType.BlockName + "_" + blockType.TopTextureName : blockType.BlockName;
Vector2[] uvs = ((blockType.RandomFaces & BlockType.RandomFacesEnum.Top) == BlockType.RandomFacesEnum.Top) ? UVMap.GetUVs(uvName).RotateUVs(rotation) : UVMap.GetUVs(uvName);
meshData.Merge(new MeshData(topFaceVerts, topFaceTriangles, uvs, defaultUVs));
}
// Bottom Face
if (bottomVis)
{
string uvName = ((blockType.UniqueFaces & BlockType.UniqueFacesEnum.Bottom) == BlockType.UniqueFacesEnum.Bottom) ? blockType.BlockName + "_" + blockType.BottomTextureName : blockType.BlockName;
Vector2[] uvs = ((blockType.RandomFaces & BlockType.RandomFacesEnum.Bottom) == BlockType.RandomFacesEnum.Bottom) ? UVMap.GetUVs(uvName).RotateUVs(rotation) : UVMap.GetUVs(uvName);
meshData.Merge(new MeshData(bottomFaceVerts, bottomFaceTriangles, uvs, defaultUVs));
}
// Front Face
if (frontVis)
{
if (blockType.BlockName == "Grass" && World.TryGetBlockFromWorldPos(internalPos.InternalPosToWorldPos(chunkPos) + new Vector3Int(0, -1, 1), out Block neighborBlock) == true && BlockType.BlockTypes[neighborBlock.ID].BlockName == "Grass")
{
string uvName = blockType.BlockName;
Vector2[] uvs = UVMap.GetUVs(uvName).RotateUVs(rotation);
meshData.Merge(new MeshData(frontFaceVerts, frontFaceTriangles, uvs, defaultUVs));
}
else
{
string uvName = ((blockType.UniqueFaces & BlockType.UniqueFacesEnum.Front) == BlockType.UniqueFacesEnum.Front) ? blockType.BlockName + "_" + blockType.FrontTextureName : blockType.BlockName;
Vector2[] uvs = ((blockType.RandomFaces & BlockType.RandomFacesEnum.Front) == BlockType.RandomFacesEnum.Front) ? UVMap.GetUVs(uvName).RotateUVs(rotation) : UVMap.GetUVs(uvName).RotateUVs(3);
meshData.Merge(new MeshData(frontFaceVerts, frontFaceTriangles, uvs, defaultUVs));
}
}
// Back Face
if (backVis)
{
if (blockType.BlockName == "Grass" && World.TryGetBlockFromWorldPos(internalPos.InternalPosToWorldPos(chunkPos) + new Vector3Int(0, -1, -1), out Block neighborBlock) == true && BlockType.BlockTypes[neighborBlock.ID].BlockName == "Grass")
{
string uvName = blockType.BlockName;
Vector2[] uvs = UVMap.GetUVs(uvName).RotateUVs(rotation);
meshData.Merge(new MeshData(backFaceVerts, backFaceTriangles, uvs, defaultUVs));
}
else
{
string uvName = ((blockType.UniqueFaces & BlockType.UniqueFacesEnum.Back) == BlockType.UniqueFacesEnum.Back) ? blockType.BlockName + "_" + blockType.BackTextureName : blockType.BlockName;
Vector2[] uvs = ((blockType.RandomFaces & BlockType.RandomFacesEnum.Back) == BlockType.RandomFacesEnum.Back) ? UVMap.GetUVs(uvName).RotateUVs(rotation) : UVMap.GetUVs(uvName).RotateUVs(3);
meshData.Merge(new MeshData(backFaceVerts, backFaceTriangles, uvs, defaultUVs));
}
}
// Right Face
if (rightVis)
{
if (blockType.BlockName == "Grass" && World.TryGetBlockFromWorldPos(internalPos.InternalPosToWorldPos(chunkPos) + new Vector3Int(1, -1, 0), out Block neighborBlock) == true && BlockType.BlockTypes[neighborBlock.ID].BlockName == "Grass")
{
string uvName = blockType.BlockName;
Vector2[] uvs = UVMap.GetUVs(uvName).RotateUVs(rotation);
meshData.Merge(new MeshData(rightFaceVerts, rightFaceTriangles, uvs, defaultUVs));
}
else
{
string uvName = ((blockType.UniqueFaces & BlockType.UniqueFacesEnum.Right) == BlockType.UniqueFacesEnum.Right) ? blockType.BlockName + "_" + blockType.RightTextureName : blockType.BlockName;
Vector2[] uvs = ((blockType.RandomFaces & BlockType.RandomFacesEnum.Right) == BlockType.RandomFacesEnum.Right) ? UVMap.GetUVs(uvName).RotateUVs(rotation) : UVMap.GetUVs(uvName).RotateUVs(3);
meshData.Merge(new MeshData(rightFaceVerts, rightFaceTriangles, uvs, defaultUVs));
}
}
// Left Face
if (leftVis)
{
if (blockType.BlockName == "Grass" && World.TryGetBlockFromWorldPos(internalPos.InternalPosToWorldPos(chunkPos) + new Vector3Int(-1, -1, 0), out Block neighborBlock) == true && BlockType.BlockTypes[neighborBlock.ID].BlockName == "Grass")
{
string uvName = blockType.BlockName;
Vector2[] uvs = UVMap.GetUVs(uvName).RotateUVs(rotation);
meshData.Merge(new MeshData(leftFaceVerts, leftFaceTriangles, uvs, defaultUVs));
}
else
{
string uvName = ((blockType.UniqueFaces & BlockType.UniqueFacesEnum.Left) == BlockType.UniqueFacesEnum.Left) ? blockType.BlockName + "_" + blockType.LeftTextureName : blockType.BlockName;
Vector2[] uvs = ((blockType.RandomFaces & BlockType.RandomFacesEnum.Left) == BlockType.RandomFacesEnum.Left) ? UVMap.GetUVs(uvName).RotateUVs(rotation) : UVMap.GetUVs(uvName).RotateUVs(3);
meshData.Merge(new MeshData(leftFaceVerts, leftFaceTriangles, uvs, defaultUVs));
}
}
meshData.OffsetPosition(new Vector3(internalPos.x - 0.5f, internalPos.y - 0.5f, internalPos.z - 0.5f));
return(meshData);
}