001    package net.minecraft.src;
002    
003    import cpw.mods.fml.common.Side;
004    import cpw.mods.fml.common.asm.SideOnly;
005    import java.util.List;
006    
007    public class ItemBlock extends Item
008    {
009        /** The block ID of the Block associated with this ItemBlock */
010        private int blockID;
011    
012        public ItemBlock(int par1)
013        {
014            super(par1);
015            this.blockID = par1 + 256;
016            this.setIconIndex(Block.blocksList[par1 + 256].getBlockTextureFromSide(2));
017            isDefaultTexture = Block.blocksList[par1 + 256].isDefaultTexture;
018        }
019    
020        /**
021         * Returns the blockID for this Item
022         */
023        public int getBlockID()
024        {
025            return this.blockID;
026        }
027    
028        /**
029         * Callback for item usage. If the item does something special on right clicking, he will have one of those. Return
030         * True if something happen and false if it don't. This is for ITEMS, not BLOCKS
031         */
032        public boolean onItemUse(ItemStack par1ItemStack, EntityPlayer par2EntityPlayer, World par3World, int par4, int par5, int par6, int par7, float par8, float par9, float par10)
033        {
034            int var11 = par3World.getBlockId(par4, par5, par6);
035    
036            if (var11 == Block.snow.blockID)
037            {
038                par7 = 1;
039            }
040            else if (var11 != Block.vine.blockID && var11 != Block.tallGrass.blockID && var11 != Block.deadBush.blockID
041                    && (Block.blocksList[var11] == null || !Block.blocksList[var11].isBlockReplaceable(par3World, par4, par5, par6)))
042            {
043                if (par7 == 0)
044                {
045                    --par5;
046                }
047    
048                if (par7 == 1)
049                {
050                    ++par5;
051                }
052    
053                if (par7 == 2)
054                {
055                    --par6;
056                }
057    
058                if (par7 == 3)
059                {
060                    ++par6;
061                }
062    
063                if (par7 == 4)
064                {
065                    --par4;
066                }
067    
068                if (par7 == 5)
069                {
070                    ++par4;
071                }
072            }
073    
074            if (par1ItemStack.stackSize == 0)
075            {
076                return false;
077            }
078            else if (!par2EntityPlayer.func_82247_a(par4, par5, par6, par7, par1ItemStack))
079            {
080                return false;
081            }
082            else if (par5 == 255 && Block.blocksList[this.blockID].blockMaterial.isSolid())
083            {
084                return false;
085            }
086            else if (par3World.canPlaceEntityOnSide(this.blockID, par4, par5, par6, false, par7, par2EntityPlayer))
087            {
088                Block var12 = Block.blocksList[this.blockID];
089    
090                if (placeBlockAt(par1ItemStack, par2EntityPlayer, par3World, par4, par5, par6, par7, par8, par9, par10))
091                {
092                    par3World.playSoundEffect((double)((float)par4 + 0.5F), (double)((float)par5 + 0.5F), (double)((float)par6 + 0.5F), var12.stepSound.getPlaceSound(), (var12.stepSound.getVolume() + 1.0F) / 2.0F, var12.stepSound.getPitch() * 0.8F);
093                    --par1ItemStack.stackSize;
094                }
095    
096                return true;
097            }
098            else
099            {
100                return false;
101            }
102        }
103    
104        @SideOnly(Side.CLIENT)
105    
106        /**
107         * Returns true if the given ItemBlock can be placed on the given side of the given block position.
108         */
109        public boolean canPlaceItemBlockOnSide(World par1World, int par2, int par3, int par4, int par5, EntityPlayer par6EntityPlayer, ItemStack par7ItemStack)
110        {
111            int var8 = par1World.getBlockId(par2, par3, par4);
112    
113            if (var8 == Block.snow.blockID)
114            {
115                par5 = 1;
116            }
117            else if (var8 != Block.vine.blockID && var8 != Block.tallGrass.blockID && var8 != Block.deadBush.blockID
118                    && (Block.blocksList[var8] == null || !Block.blocksList[var8].isBlockReplaceable(par1World, par2, par3, par4)))
119            {
120                if (par5 == 0)
121                {
122                    --par3;
123                }
124    
125                if (par5 == 1)
126                {
127                    ++par3;
128                }
129    
130                if (par5 == 2)
131                {
132                    --par4;
133                }
134    
135                if (par5 == 3)
136                {
137                    ++par4;
138                }
139    
140                if (par5 == 4)
141                {
142                    --par2;
143                }
144    
145                if (par5 == 5)
146                {
147                    ++par2;
148                }
149            }
150    
151            return par1World.canPlaceEntityOnSide(this.getBlockID(), par2, par3, par4, false, par5, (Entity)null);
152        }
153    
154        public String getItemNameIS(ItemStack par1ItemStack)
155        {
156            return Block.blocksList[this.blockID].getBlockName();
157        }
158    
159        public String getItemName()
160        {
161            return Block.blocksList[this.blockID].getBlockName();
162        }
163    
164        @SideOnly(Side.CLIENT)
165    
166        /**
167         * gets the CreativeTab this item is displayed on
168         */
169        public CreativeTabs getCreativeTab()
170        {
171            return Block.blocksList[this.blockID].getCreativeTabToDisplayOn();
172        }
173    
174        @SideOnly(Side.CLIENT)
175    
176        /**
177         * returns a list of items with the same ID, but different meta (eg: dye returns 16 items)
178         */
179        public void getSubItems(int par1, CreativeTabs par2CreativeTabs, List par3List)
180        {
181            Block.blocksList[this.blockID].getSubBlocks(par1, par2CreativeTabs, par3List);
182        }
183    
184        /**
185         * Called to actually place the block, after the location is determined
186         * and all permission checks have been made.
187         * 
188         * @param stack The item stack that was used to place the block. This can be changed inside the method.
189         * @param player The player who is placing the block. Can be null if the block is not being placed by a player.
190         * @param side The side the player (or machine) right-clicked on.
191         */
192        public boolean placeBlockAt(ItemStack stack, EntityPlayer player, World world, int x, int y, int z, int side, float hitX, float hitY, float hitZ)
193        {
194           if (!world.setBlockAndMetadataWithNotify(x, y, z, this.blockID, this.getMetadata(stack.getItemDamage())))
195           {
196                   return false;
197           }
198    
199           if (world.getBlockId(x, y, z) == this.blockID)
200           {
201               Block.blocksList[this.blockID].updateBlockMetadata(world, x, y, z, side, hitX, hitY, hitZ);
202               Block.blocksList[this.blockID].onBlockPlacedBy(world, x, y, z, player);
203           }
204    
205           return true;
206        }
207    }