    001package net.minecraft.tileentity;
    002
    003import net.minecraft.block.Block;
    004import net.minecraft.block.material.Material;
    005import net.minecraft.nbt.NBTTagCompound;
    006import net.minecraft.world.World;
    007
    008public class TileEntityNote extends TileEntity
    009{
    010    /** Note to play */
    011    public byte note = 0;
    012
    013    /** stores the latest redstone state */
    014    public boolean previousRedstoneState = false;
    015
    016    /**
    017     * Writes a tile entity to NBT.
    018     */
    019    public void writeToNBT(NBTTagCompound par1NBTTagCompound)
    020    {
    021        super.writeToNBT(par1NBTTagCompound);
    022        par1NBTTagCompound.setByte("note", this.note);
    023    }
    024
    025    /**
    026     * Reads a tile entity from NBT.
    027     */
    028    public void readFromNBT(NBTTagCompound par1NBTTagCompound)
    029    {
    030        super.readFromNBT(par1NBTTagCompound);
    031        this.note = par1NBTTagCompound.getByte("note");
    032
    033        if (this.note < 0)
    034        {
    035            this.note = 0;
    036        }
    037
    038        if (this.note > 24)
    039        {
    040            this.note = 24;
    041        }
    042    }
    043
    044    /**
    045     * change pitch by -> (currentPitch + 1) % 25
    046     */
    047    public void changePitch()
    048    {
    049        this.note = (byte)((this.note + 1) % 25);
    050        this.onInventoryChanged();
    051    }
    052
    053    /**
    054     * plays the stored note
    055     */
    056    public void triggerNote(World par1World, int par2, int par3, int par4)
    057    {
    058        if (par1World.getBlockMaterial(par2, par3 + 1, par4) == Material.air)
    059        {
    060            Material var5 = par1World.getBlockMaterial(par2, par3 - 1, par4);
    061            byte var6 = 0;
    062
    063            if (var5 == Material.rock)
    064            {
    065                var6 = 1;
    066            }
    067
    068            if (var5 == Material.sand)
    069            {
    070                var6 = 2;
    071            }
    072
    073            if (var5 == Material.glass)
    074            {
    075                var6 = 3;
    076            }
    077
    078            if (var5 == Material.wood)
    079            {
    080                var6 = 4;
    081            }
    082
    083            par1World.addBlockEvent(par2, par3, par4, Block.music.blockID, var6, this.note);
    084        }
    085    }
    086}