SupportBlock.java

package mcjty.rftools.blocks.spaceprojector;

import cpw.mods.fml.relauncher.Side;
import cpw.mods.fml.relauncher.SideOnly;
import mcjty.lib.varia.Coordinate;
import mcjty.rftools.RFTools;
import net.minecraft.block.Block;
import net.minecraft.block.material.Material;
import net.minecraft.client.renderer.texture.IIconRegister;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.util.Facing;
import net.minecraft.util.IIcon;
import net.minecraft.world.IBlockAccess;
import net.minecraft.world.World;

import java.util.ArrayDeque;
import java.util.Deque;
import java.util.Random;

public class SupportBlock extends Block {

    private IIcon icon;
    private IIcon iconRed;
    private IIcon iconYellow;

    public static final int STATUS_OK = 0;
    public static final int STATUS_WARN = 1;
    public static final int STATUS_ERROR = 2;

    public SupportBlock() {
        super(Material.glass);
        setBlockName("supportBlock");
        setCreativeTab(RFTools.tabRfTools);
    }

    @Override
    public boolean isOpaqueCube() {
        return false;
    }

    @Override
    public int getRenderBlockPass() {
        return 1;
    }

    @Override
    public boolean renderAsNormalBlock() {
        return false;
    }

    @Override
    public int quantityDropped(Random random) {
        return 0;
    }

    @Override
    public void registerBlockIcons(IIconRegister iconRegister) {
        icon = iconRegister.registerIcon(RFTools.MODID + ":" + "supportBlock");
        iconRed = iconRegister.registerIcon(RFTools.MODID + ":" + "supportRedBlock");
        iconYellow = iconRegister.registerIcon(RFTools.MODID + ":" + "supportYellowBlock");
    }

    @Override
    public boolean onBlockActivated(World world, int x, int y, int z, EntityPlayer player, int side, float sidex, float sidey, float sidez) {
        if (!world.isRemote) {
            // Find all connected blocks and remove them.
            Deque<Coordinate> todo = new ArrayDeque<Coordinate>();
            todo.add(new Coordinate(x, y, z));
            removeBlock(world, todo);
        }
        return super.onBlockActivated(world, x, y, z, player, side, sidex, sidey, sidez);
    }

    private void removeBlock(World world, Deque<Coordinate> todo) {
        while (!todo.isEmpty()) {
            Coordinate c = todo.pollFirst();
            int x = c.getX();
            int y = c.getY();
            int z = c.getZ();
            world.setBlockToAir(x, y, z);
            if (world.getBlock(x-1, y, z) == this) {
                todo.push(new Coordinate(x-1, y, z));
            }
            if (world.getBlock(x+1, y, z) == this) {
                todo.push(new Coordinate(x + 1, y, z));
            }
            if (world.getBlock(x, y-1, z) == this) {
                todo.push(new Coordinate(x, y - 1, z));
            }
            if (world.getBlock(x, y+1, z) == this) {
                todo.push(new Coordinate(x, y + 1, z));
            }
            if (world.getBlock(x, y, z-1) == this) {
                todo.push(new Coordinate(x, y, z - 1));
            }
            if (world.getBlock(x, y, z+1) == this) {
                todo.push(new Coordinate(x, y, z + 1));
            }
        }
    }

    @Override
    public IIcon getIcon(int side, int meta) {
        if (meta == STATUS_ERROR) {
            return iconRed;
        } else if (meta == STATUS_WARN) {
            return iconYellow;
        } else {
            return icon;
        }
    }

    /**
     * Returns true if the given side of this block type should be rendered, if the adjacent block is at the given
     * coordinates.  Args: blockAccess, x, y, z, side
     */
    @Override
    @SideOnly(Side.CLIENT)
    public boolean shouldSideBeRendered(IBlockAccess blockAccess, int x, int y, int z, int side) {
        Block block = blockAccess.getBlock(x, y, z);
        if (blockAccess.getBlockMetadata(x, y, z) != blockAccess.getBlockMetadata(x - Facing.offsetsXForSide[side], y - Facing.offsetsYForSide[side], z - Facing.offsetsZForSide[side])) {
            return true;
        }

        if (block == this) {
            return false;
        }

        return block != this && super.shouldSideBeRendered(blockAccess, x, y, z, side);
    }


}