/// <summary>
/// Converts a direction into a vector
/// </summary>
private Vector3 DirToVector(Direction dir)
{
switch (dir)
{
case Direction.Top:
return(Vector3.up);
case Direction.Bottom:
return(Vector3.down);
case Direction.Left:
return(Vector3.left);
case Direction.Right:
return(Vector3.right);
case Direction.Forward:
return(Vector3.forward);
case Direction.Back:
return(Vector3.back);
}
return(Vector3.zero);
}
/// <summary>
/// Generates the associated quad for a particular direction and position
/// </summary>
private void GenerateFace(int x, int y, int z, Vector3 pos, Direction dir)
{
// Sets the associated vertices for a particular face
switch (dir)
{
case Direction.Top:
vertices[vertexCount++].Set(pos.x, pos.y, pos.z + Voxel.VoxelSize);
vertices[vertexCount++].Set(pos.x + Voxel.VoxelSize, pos.y, pos.z + Voxel.VoxelSize);
vertices[vertexCount++].Set(pos.x + Voxel.VoxelSize, pos.y, pos.z);
vertices[vertexCount++].Set(pos.x, pos.y, pos.z);
break;
case Direction.Bottom:
vertices[vertexCount++].Set(pos.x, pos.y - Voxel.VoxelSize, pos.z);
vertices[vertexCount++].Set(pos.x + Voxel.VoxelSize, pos.y - Voxel.VoxelSize, pos.z);
vertices[vertexCount++].Set(pos.x + Voxel.VoxelSize, pos.y - Voxel.VoxelSize, pos.z + Voxel.VoxelSize);
vertices[vertexCount++].Set(pos.x, pos.y - Voxel.VoxelSize, pos.z + Voxel.VoxelSize);
break;
case Direction.Left:
vertices[vertexCount++].Set(pos.x, pos.y - Voxel.VoxelSize, pos.z + Voxel.VoxelSize);
vertices[vertexCount++].Set(pos.x, pos.y, pos.z + Voxel.VoxelSize);
vertices[vertexCount++].Set(pos.x, pos.y, pos.z);
vertices[vertexCount++].Set(pos.x, pos.y - Voxel.VoxelSize, pos.z);
break;
case Direction.Right:
vertices[vertexCount++].Set(pos.x + Voxel.VoxelSize, pos.y - Voxel.VoxelSize, pos.z);
vertices[vertexCount++].Set(pos.x + Voxel.VoxelSize, pos.y, pos.z);
vertices[vertexCount++].Set(pos.x + Voxel.VoxelSize, pos.y, pos.z + Voxel.VoxelSize);
vertices[vertexCount++].Set(pos.x + Voxel.VoxelSize, pos.y - Voxel.VoxelSize, pos.z + Voxel.VoxelSize);
break;
case Direction.Forward:
vertices[vertexCount++].Set(pos.x + Voxel.VoxelSize, pos.y - Voxel.VoxelSize, pos.z + Voxel.VoxelSize);
vertices[vertexCount++].Set(pos.x + Voxel.VoxelSize, pos.y, pos.z + Voxel.VoxelSize);
vertices[vertexCount++].Set(pos.x, pos.y, pos.z + Voxel.VoxelSize);
vertices[vertexCount++].Set(pos.x, pos.y - Voxel.VoxelSize, pos.z + Voxel.VoxelSize);
break;
case Direction.Back:
vertices[vertexCount++].Set(pos.x, pos.y - Voxel.VoxelSize, pos.z);
vertices[vertexCount++].Set(pos.x, pos.y, pos.z);
vertices[vertexCount++].Set(pos.x + Voxel.VoxelSize, pos.y, pos.z);
vertices[vertexCount++].Set(pos.x + Voxel.VoxelSize, pos.y - Voxel.VoxelSize, pos.z);
break;
}
// Set normals
for (int i = vertexCount - 4; i < vertexCount; i++)
{
Vector3 vDir = DirToVector(dir);
normals[i].Set(vDir.x, vDir.y, vDir.z);
}
// Set UVs
uvs[vertexCount - 4].Set(colourCoordinates[Voxels[x][y][z] - 1].x, 0f);
uvs[vertexCount - 3].Set(colourCoordinates[Voxels[x][y][z] - 1].y, 0f);
uvs[vertexCount - 2].Set(colourCoordinates[Voxels[x][y][z] - 1].x, 1f);
uvs[vertexCount - 1].Set(colourCoordinates[Voxels[x][y][z] - 1].y, 1f);
}
