Builders Freecam

Added

• Freecam boundary conditions on rendered chunks. Freecam will now stop at the second-last chunk to prevent the well known "cave x-ray" peeking with the freecam. If somehow players manage to put the freecam over the second-last chunk, Freecam will disable itself (example if they try to play on and off with the render distance).

Changed

• Key Mappings are not referred anymore on .freecam. but instead on .buildersfreecam.
• IGNORE_NON_CULLING Block Collision is now a dynamic function based on neighbours, fluids and non-opaque blocks. The function to determine if Builders Freecam can pass through a block is:

public static boolean isBlockCullingNeighbours(BlockState state, BlockPos pos, BlockGetter level) {
  if(state.getFluidState().isEmpty()){
    for (Direction dir : Direction.values()) {
      if (!state.getFaceOcclusionShape(dir).isEmpty()) {
        if(state.isFaceSturdy(EmptyBlockGetter.INSTANCE, BlockPos.ZERO, dir)) {
          if(!(state.getBlock() instanceof CarpetBlock)){ // skipping carpets
            BlockState neighbourState = level.getBlockState(pos.relative(dir));
            if(neighbourState.getFluidState().isEmpty()){
              if(!neighbourState.getFaceOcclusionShape(dir.getOpposite()).isEmpty()) {
                if(neighbourState.isFaceSturdy(EmptyBlockGetter.INSTANCE, BlockPos.ZERO, dir.getOpposite())){
                  return true; // a sturdy face could be culling a culling neighbour
                }
              }
            }else{
                return true; // a sturdy face is culling a fluid neighbour
            }
          }
        }
      }
    }
    return false;
  }
  return true; // not a block
}

What does this function do? This function checks whether a block can “cull” (i.e. skip texture rendering) nearby block faces. If it does cull a neighbour face (Piston Head, Solid Block...), it checks if the involved neighbour block can also "cull" the same face (2 Adiacent Solid Blocks, 2 Piston Head front-to-front...), in which case travelling through that block is denied, otherwise it will be allowed (Glass over piston head, mid-air solid block...). If it does not cull every neighbour face (hopper, cauldron...), you can travel through the block.

Fixed

• Slide X-Ray historical bug: If somehow players try to "fast slide" maintaining an oblique posion of Freecam, over a non-travellable block, Freecam will not prevent peeking over collisions. Now the Free Camera will prentend to keep a safe distance of some pixels.
• Freecam is not disabling itself when players pretend to be in a non-travellable block.