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    import java.util.Random;
007    
008    public class BlockLog extends Block
009    {
010        /** The type of tree this log came from. */
011        public static final String[] woodType = new String[] {"oak", "spruce", "birch", "jungle"};
012    
013        protected BlockLog(int par1)
014        {
015            super(par1, Material.wood);
016            this.blockIndexInTexture = 20;
017            this.setCreativeTab(CreativeTabs.tabBlock);
018        }
019    
020        /**
021         * The type of render function that is called for this block
022         */
023        public int getRenderType()
024        {
025            return 31;
026        }
027    
028        /**
029         * Returns the quantity of items to drop on block destruction.
030         */
031        public int quantityDropped(Random par1Random)
032        {
033            return 1;
034        }
035    
036        /**
037         * Returns the ID of the items to drop on destruction.
038         */
039        public int idDropped(int par1, Random par2Random, int par3)
040        {
041            return Block.wood.blockID;
042        }
043    
044        /**
045         * ejects contained items into the world, and notifies neighbours of an update, as appropriate
046         */
047        public void breakBlock(World par1World, int par2, int par3, int par4, int par5, int par6)
048        {
049            byte var7 = 4;
050            int var8 = var7 + 1;
051    
052            if (par1World.checkChunksExist(par2 - var8, par3 - var8, par4 - var8, par2 + var8, par3 + var8, par4 + var8))
053            {
054                for (int var9 = -var7; var9 <= var7; ++var9)
055                {
056                    for (int var10 = -var7; var10 <= var7; ++var10)
057                    {
058                        for (int var11 = -var7; var11 <= var7; ++var11)
059                        {
060                            int var12 = par1World.getBlockId(par2 + var9, par3 + var10, par4 + var11);
061    
062                            if (Block.blocksList[var12] != null)
063                            {
064                                Block.blocksList[var12].beginLeavesDecay(par1World, par2 + var9, par3 + var10, par4 + var11);
065                            }
066                        }
067                    }
068                }
069            }
070        }
071    
072        /**
073         * called before onBlockPlacedBy by ItemBlock and ItemReed
074         */
075        public void updateBlockMetadata(World par1World, int par2, int par3, int par4, int par5, float par6, float par7, float par8)
076        {
077            int var9 = par1World.getBlockMetadata(par2, par3, par4) & 3;
078            byte var10 = 0;
079    
080            switch (par5)
081            {
082                case 0:
083                case 1:
084                    var10 = 0;
085                    break;
086                case 2:
087                case 3:
088                    var10 = 8;
089                    break;
090                case 4:
091                case 5:
092                    var10 = 4;
093            }
094    
095            par1World.setBlockMetadataWithNotify(par2, par3, par4, var9 | var10);
096        }
097    
098        /**
099         * From the specified side and block metadata retrieves the blocks texture. Args: side, metadata
100         */
101        public int getBlockTextureFromSideAndMetadata(int par1, int par2)
102        {
103            int var3 = par2 & 12;
104            int var4 = par2 & 3;
105            return var3 == 0 && (par1 == 1 || par1 == 0) ? 21 : (var3 == 4 && (par1 == 5 || par1 == 4) ? 21 : (var3 == 8 && (par1 == 2 || par1 == 3) ? 21 : (var4 == 1 ? 116 : (var4 == 2 ? 117 : (var4 == 3 ? 153 : 20)))));
106        }
107    
108        /**
109         * Determines the damage on the item the block drops. Used in cloth and wood.
110         */
111        public int damageDropped(int par1)
112        {
113            return par1 & 3;
114        }
115    
116        /**
117         * returns a number between 0 and 3
118         */
119        public static int limitToValidMetadata(int par0)
120        {
121            return par0 & 3;
122        }
123    
124        @SideOnly(Side.CLIENT)
125    
126        /**
127         * returns a list of blocks with the same ID, but different meta (eg: wood returns 4 blocks)
128         */
129        public void getSubBlocks(int par1, CreativeTabs par2CreativeTabs, List par3List)
130        {
131            par3List.add(new ItemStack(par1, 1, 0));
132            par3List.add(new ItemStack(par1, 1, 1));
133            par3List.add(new ItemStack(par1, 1, 2));
134            par3List.add(new ItemStack(par1, 1, 3));
135        }
136    
137        /**
138         * Returns an item stack containing a single instance of the current block type. 'i' is the block's subtype/damage
139         * and is ignored for blocks which do not support subtypes. Blocks which cannot be harvested should return null.
140         */
141        protected ItemStack createStackedBlock(int par1)
142        {
143            return new ItemStack(this.blockID, 1, limitToValidMetadata(par1));
144        }
145    
146        @Override
147        public boolean canSustainLeaves(World world, int x, int y, int z)
148        {
149            return true;
150        }
151    
152        @Override
153        public boolean isWood(World world, int x, int y, int z)
154        {
155            return true;
156        }
157    }