NaturesAura/src/main/java/de/ellpeck/naturesaura/blocks/BlockGratedChute.java

package de.ellpeck.naturesaura.blocks;

import de.ellpeck.naturesaura.blocks.tiles.TileEntityGratedChute;
import net.minecraft.block.*;
import net.minecraft.block.material.Material;
import net.minecraft.entity.player.PlayerEntity;
import net.minecraft.item.BlockItemUseContext;
import net.minecraft.item.ItemStack;
import net.minecraft.state.DirectionProperty;
import net.minecraft.state.StateContainer;
import net.minecraft.tileentity.IHopper;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.util.BlockRenderLayer;
import net.minecraft.util.Direction;
import net.minecraft.util.Hand;
import net.minecraft.util.math.BlockPos;
import net.minecraft.util.math.BlockRayTraceResult;
import net.minecraft.util.math.MathHelper;
import net.minecraft.util.math.shapes.IBooleanFunction;
import net.minecraft.util.math.shapes.ISelectionContext;
import net.minecraft.util.math.shapes.VoxelShape;
import net.minecraft.util.math.shapes.VoxelShapes;
import net.minecraft.world.IBlockReader;
import net.minecraft.world.World;
import net.minecraftforge.api.distmarker.Dist;
import net.minecraftforge.api.distmarker.OnlyIn;
import net.minecraftforge.items.IItemHandler;

import javax.annotation.Nullable;

public class BlockGratedChute extends BlockContainerImpl {

    public static final DirectionProperty FACING = HopperBlock.FACING;
    private static final VoxelShape INPUT_SHAPE = Block.makeCuboidShape(0.0D, 10.0D, 0.0D, 16.0D, 16.0D, 16.0D);
    private static final VoxelShape MIDDLE_SHAPE = Block.makeCuboidShape(4.0D, 4.0D, 4.0D, 12.0D, 10.0D, 12.0D);
    private static final VoxelShape INPUT_MIDDLE_SHAPE = VoxelShapes.or(MIDDLE_SHAPE, INPUT_SHAPE);
    private static final VoxelShape COMBINED_SHAPE = VoxelShapes.combineAndSimplify(INPUT_MIDDLE_SHAPE, IHopper.INSIDE_BOWL_SHAPE, IBooleanFunction.ONLY_FIRST);
    private static final VoxelShape DOWN_SHAPE = VoxelShapes.or(COMBINED_SHAPE, Block.makeCuboidShape(6.0D, 0.0D, 6.0D, 10.0D, 4.0D, 10.0D));
    private static final VoxelShape EAST_SHAPE = VoxelShapes.or(COMBINED_SHAPE, Block.makeCuboidShape(12.0D, 4.0D, 6.0D, 16.0D, 8.0D, 10.0D));
    private static final VoxelShape NORTH_SHAPE = VoxelShapes.or(COMBINED_SHAPE, Block.makeCuboidShape(6.0D, 4.0D, 0.0D, 10.0D, 8.0D, 4.0D));
    private static final VoxelShape SOUTH_SHAPE = VoxelShapes.or(COMBINED_SHAPE, Block.makeCuboidShape(6.0D, 4.0D, 12.0D, 10.0D, 8.0D, 16.0D));
    private static final VoxelShape WEST_SHAPE = VoxelShapes.or(COMBINED_SHAPE, Block.makeCuboidShape(0.0D, 4.0D, 6.0D, 4.0D, 8.0D, 10.0D));
    private static final VoxelShape DOWN_RAYTRACE_SHAPE = IHopper.INSIDE_BOWL_SHAPE;
    private static final VoxelShape EAST_RAYTRACE_SHAPE = VoxelShapes.or(IHopper.INSIDE_BOWL_SHAPE, Block.makeCuboidShape(12.0D, 8.0D, 6.0D, 16.0D, 10.0D, 10.0D));
    private static final VoxelShape NORTH_RAYTRACE_SHAPE = VoxelShapes.or(IHopper.INSIDE_BOWL_SHAPE, Block.makeCuboidShape(6.0D, 8.0D, 0.0D, 10.0D, 10.0D, 4.0D));
    private static final VoxelShape SOUTH_RAYTRACE_SHAPE = VoxelShapes.or(IHopper.INSIDE_BOWL_SHAPE, Block.makeCuboidShape(6.0D, 8.0D, 12.0D, 10.0D, 10.0D, 16.0D));
    private static final VoxelShape WEST_RAYTRACE_SHAPE = VoxelShapes.or(IHopper.INSIDE_BOWL_SHAPE, Block.makeCuboidShape(0.0D, 8.0D, 6.0D, 4.0D, 10.0D, 10.0D));

    public BlockGratedChute() {
        super("grated_chute", TileEntityGratedChute::new, ModBlocks.prop(Material.IRON).hardnessAndResistance(3.0F, 8.0F).sound(SoundType.METAL));
    }

    @Override
    public VoxelShape getShape(BlockState state, IBlockReader worldIn, BlockPos pos, ISelectionContext context) {
        switch (state.get(FACING)) {
            case DOWN:
                return DOWN_SHAPE;
            case NORTH:
                return NORTH_SHAPE;
            case SOUTH:
                return SOUTH_SHAPE;
            case WEST:
                return WEST_SHAPE;
            case EAST:
                return EAST_SHAPE;
            default:
                return COMBINED_SHAPE;
        }
    }

    @Override
    public VoxelShape getRaytraceShape(BlockState state, IBlockReader worldIn, BlockPos pos) {
        switch (state.get(FACING)) {
            case DOWN:
                return DOWN_RAYTRACE_SHAPE;
            case NORTH:
                return NORTH_RAYTRACE_SHAPE;
            case SOUTH:
                return SOUTH_RAYTRACE_SHAPE;
            case WEST:
                return WEST_RAYTRACE_SHAPE;
            case EAST:
                return EAST_RAYTRACE_SHAPE;
            default:
                return IHopper.INSIDE_BOWL_SHAPE;
        }
    }

    @Override
    public boolean onBlockActivated(BlockState state, World worldIn, BlockPos pos, PlayerEntity player, Hand handIn, BlockRayTraceResult hit) {
        if (!player.isSneaking())
            return false;
        TileEntity tile = worldIn.getTileEntity(pos);
        if (!(tile instanceof TileEntityGratedChute))
            return false;
        if (!worldIn.isRemote) {
            TileEntityGratedChute chute = (TileEntityGratedChute) tile;
            chute.isBlacklist = !chute.isBlacklist;
            chute.sendToClients();
        }
        return true;
    }

    @Nullable
    @Override
    public BlockState getStateForPlacement(BlockItemUseContext context) {
        Direction newFacing = context.getFace().getOpposite();
        if (newFacing == Direction.UP)
            newFacing = Direction.DOWN;
        return this.getDefaultState().with(FACING, newFacing);
    }

    @Override
    public BlockRenderType getRenderType(BlockState state) {
        return BlockRenderType.MODEL;
    }

    @Override
    public boolean hasComparatorInputOverride(BlockState state) {
        return true;
    }

    @Override
    public int getComparatorInputOverride(BlockState blockState, World worldIn, BlockPos pos) {
        TileEntity tile = worldIn.getTileEntity(pos);
        if (tile instanceof TileEntityGratedChute) {
            IItemHandler handler = ((TileEntityGratedChute) tile).getItemHandler(null);
            ItemStack stack = handler.getStackInSlot(0);
            if (stack.isEmpty())
                return 0;
            return MathHelper.ceil((stack.getCount() / (float) stack.getMaxStackSize()) * 15);
        } else
            return 0;
    }

    @Override
    @OnlyIn(Dist.CLIENT)
    public BlockRenderLayer getRenderLayer() {
        return BlockRenderLayer.CUTOUT_MIPPED;
    }

    @Override
    protected void fillStateContainer(StateContainer.Builder<Block, BlockState> builder) {
        builder.add(FACING);
    }
}