buildcraft.transport.utils.FacadeMatrix.java Source code

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Here is the source code for buildcraft.transport.utils.FacadeMatrix.java

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/**
 * Copyright (c) 2011-2014, SpaceToad and the BuildCraft Team
 * http://www.mod-buildcraft.com
 *
 * BuildCraft is distributed under the terms of the Minecraft Mod Public
 * License 1.0, or MMPL. Please check the contents of the license located in
 * http://www.mod-buildcraft.com/MMPL-1.0.txt
 */
package buildcraft.transport.utils;

import io.netty.buffer.ByteBuf;

import net.minecraft.block.Block;

import net.minecraftforge.common.util.ForgeDirection;

public class FacadeMatrix {

    private final Block[] blocks = new Block[ForgeDirection.VALID_DIRECTIONS.length];
    private final int[] blockMetas = new int[ForgeDirection.VALID_DIRECTIONS.length];
    private boolean dirty = false;

    public FacadeMatrix() {
    }

    public void setFacade(ForgeDirection direction, Block block, int blockMeta) {
        if (blocks[direction.ordinal()] != block || blockMetas[direction.ordinal()] != blockMeta) {
            blocks[direction.ordinal()] = block;
            blockMetas[direction.ordinal()] = blockMeta;
            dirty = true;
        }
    }

    public Block getFacadeBlock(ForgeDirection direction) {
        return blocks[direction.ordinal()];
    }

    public int getFacadeMetaId(ForgeDirection direction) {
        return blockMetas[direction.ordinal()];
    }

    public boolean isDirty() {
        return dirty;
    }

    public void clean() {
        dirty = false;
    }

    public void writeData(ByteBuf data) {
        for (int i = 0; i < ForgeDirection.VALID_DIRECTIONS.length; i++) {
            if (blocks[i] == null) {
                data.writeShort(0);
            } else {
                data.writeShort(Block.blockRegistry.getIDForObject(blocks[i]));
            }

            data.writeByte(blockMetas[i]);
        }
    }

    public void readData(ByteBuf data) {
        for (int i = 0; i < ForgeDirection.VALID_DIRECTIONS.length; i++) {
            short id = data.readShort();

            Block block;

            if (id == 0) {
                block = null;
            } else {
                block = (Block) Block.blockRegistry.getObjectById(id);
            }

            if (blocks[i] != block) {
                blocks[i] = block;
                dirty = true;
            }
            byte meta = data.readByte();
            if (blockMetas[i] != meta) {
                blockMetas[i] = meta;
                dirty = true;
            }
        }
    }
}