001    package net.minecraft.block;
002    
003    import cpw.mods.fml.common.Side;
004    import cpw.mods.fml.common.asm.SideOnly;
005    import java.util.Random;
006    import net.minecraft.block.material.Material;
007    import net.minecraft.entity.item.EntityFallingSand;
008    import net.minecraft.entity.player.EntityPlayer;
009    import net.minecraft.world.IBlockAccess;
010    import net.minecraft.world.World;
011    
012    public class BlockDragonEgg extends Block
013    {
014        public BlockDragonEgg(int par1, int par2)
015        {
016            super(par1, par2, Material.dragonEgg);
017        }
018    
019        /**
020         * Called whenever the block is added into the world. Args: world, x, y, z
021         */
022        public void onBlockAdded(World par1World, int par2, int par3, int par4)
023        {
024            par1World.scheduleBlockUpdate(par2, par3, par4, this.blockID, this.tickRate());
025        }
026    
027        /**
028         * Lets the block know when one of its neighbor changes. Doesn't know which neighbor changed (coordinates passed are
029         * their own) Args: x, y, z, neighbor blockID
030         */
031        public void onNeighborBlockChange(World par1World, int par2, int par3, int par4, int par5)
032        {
033            par1World.scheduleBlockUpdate(par2, par3, par4, this.blockID, this.tickRate());
034        }
035    
036        /**
037         * Ticks the block if it's been scheduled
038         */
039        public void updateTick(World par1World, int par2, int par3, int par4, Random par5Random)
040        {
041            this.fallIfPossible(par1World, par2, par3, par4);
042        }
043    
044        /**
045         * Checks if the dragon egg can fall down, and if so, makes it fall.
046         */
047        private void fallIfPossible(World par1World, int par2, int par3, int par4)
048        {
049            if (BlockSand.canFallBelow(par1World, par2, par3 - 1, par4) && par3 >= 0)
050            {
051                byte var5 = 32;
052    
053                if (!BlockSand.fallInstantly && par1World.checkChunksExist(par2 - var5, par3 - var5, par4 - var5, par2 + var5, par3 + var5, par4 + var5))
054                {
055                    EntityFallingSand var6 = new EntityFallingSand(par1World, (double)((float)par2 + 0.5F), (double)((float)par3 + 0.5F), (double)((float)par4 + 0.5F), this.blockID);
056                    par1World.spawnEntityInWorld(var6);
057                }
058                else
059                {
060                    par1World.setBlockWithNotify(par2, par3, par4, 0);
061    
062                    while (BlockSand.canFallBelow(par1World, par2, par3 - 1, par4) && par3 > 0)
063                    {
064                        --par3;
065                    }
066    
067                    if (par3 > 0)
068                    {
069                        par1World.setBlockWithNotify(par2, par3, par4, this.blockID);
070                    }
071                }
072            }
073        }
074    
075        /**
076         * Called upon block activation (right click on the block.)
077         */
078        public boolean onBlockActivated(World par1World, int par2, int par3, int par4, EntityPlayer par5EntityPlayer, int par6, float par7, float par8, float par9)
079        {
080            this.teleportNearby(par1World, par2, par3, par4);
081            return true;
082        }
083    
084        /**
085         * Called when the block is clicked by a player. Args: x, y, z, entityPlayer
086         */
087        public void onBlockClicked(World par1World, int par2, int par3, int par4, EntityPlayer par5EntityPlayer)
088        {
089            this.teleportNearby(par1World, par2, par3, par4);
090        }
091    
092        /**
093         * Teleports the dragon egg somewhere else in a 31x19x31 area centered on the egg.
094         */
095        private void teleportNearby(World par1World, int par2, int par3, int par4)
096        {
097            if (par1World.getBlockId(par2, par3, par4) == this.blockID)
098            {
099                for (int var5 = 0; var5 < 1000; ++var5)
100                {
101                    int var6 = par2 + par1World.rand.nextInt(16) - par1World.rand.nextInt(16);
102                    int var7 = par3 + par1World.rand.nextInt(8) - par1World.rand.nextInt(8);
103                    int var8 = par4 + par1World.rand.nextInt(16) - par1World.rand.nextInt(16);
104    
105                    if (par1World.getBlockId(var6, var7, var8) == 0)
106                    {
107                        if (!par1World.isRemote)
108                        {
109                            par1World.setBlockAndMetadataWithNotify(var6, var7, var8, this.blockID, par1World.getBlockMetadata(par2, par3, par4));
110                            par1World.setBlockWithNotify(par2, par3, par4, 0);
111                        }
112                        else
113                        {
114                            short var9 = 128;
115    
116                            for (int var10 = 0; var10 < var9; ++var10)
117                            {
118                                double var11 = par1World.rand.nextDouble();
119                                float var13 = (par1World.rand.nextFloat() - 0.5F) * 0.2F;
120                                float var14 = (par1World.rand.nextFloat() - 0.5F) * 0.2F;
121                                float var15 = (par1World.rand.nextFloat() - 0.5F) * 0.2F;
122                                double var16 = (double)var6 + (double)(par2 - var6) * var11 + (par1World.rand.nextDouble() - 0.5D) * 1.0D + 0.5D;
123                                double var18 = (double)var7 + (double)(par3 - var7) * var11 + par1World.rand.nextDouble() * 1.0D - 0.5D;
124                                double var20 = (double)var8 + (double)(par4 - var8) * var11 + (par1World.rand.nextDouble() - 0.5D) * 1.0D + 0.5D;
125                                par1World.spawnParticle("portal", var16, var18, var20, (double)var13, (double)var14, (double)var15);
126                            }
127                        }
128    
129                        return;
130                    }
131                }
132            }
133        }
134    
135        /**
136         * How many world ticks before ticking
137         */
138        public int tickRate()
139        {
140            return 5;
141        }
142    
143        /**
144         * Is this block (a) opaque and (b) a full 1m cube?  This determines whether or not to render the shared face of two
145         * adjacent blocks and also whether the player can attach torches, redstone wire, etc to this block.
146         */
147        public boolean isOpaqueCube()
148        {
149            return false;
150        }
151    
152        /**
153         * If this block doesn't render as an ordinary block it will return False (examples: signs, buttons, stairs, etc)
154         */
155        public boolean renderAsNormalBlock()
156        {
157            return false;
158        }
159    
160        @SideOnly(Side.CLIENT)
161    
162        /**
163         * Returns true if the given side of this block type should be rendered, if the adjacent block is at the given
164         * coordinates.  Args: blockAccess, x, y, z, side
165         */
166        public boolean shouldSideBeRendered(IBlockAccess par1IBlockAccess, int par2, int par3, int par4, int par5)
167        {
168            return true;
169        }
170    
171        /**
172         * The type of render function that is called for this block
173         */
174        public int getRenderType()
175        {
176            return 27;
177        }
178    
179        @SideOnly(Side.CLIENT)
180    
181        /**
182         * only called by clickMiddleMouseButton , and passed to inventory.setCurrentItem (along with isCreative)
183         */
184        public int idPicked(World par1World, int par2, int par3, int par4)
185        {
186            return 0;
187        }
188    }