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.Random;
006    
007    public class BlockDragonEgg extends Block
008    {
009        public BlockDragonEgg(int par1, int par2)
010        {
011            super(par1, par2, Material.dragonEgg);
012        }
013    
014        /**
015         * Called whenever the block is added into the world. Args: world, x, y, z
016         */
017        public void onBlockAdded(World par1World, int par2, int par3, int par4)
018        {
019            par1World.scheduleBlockUpdate(par2, par3, par4, this.blockID, this.tickRate());
020        }
021    
022        /**
023         * Lets the block know when one of its neighbor changes. Doesn't know which neighbor changed (coordinates passed are
024         * their own) Args: x, y, z, neighbor blockID
025         */
026        public void onNeighborBlockChange(World par1World, int par2, int par3, int par4, int par5)
027        {
028            par1World.scheduleBlockUpdate(par2, par3, par4, this.blockID, this.tickRate());
029        }
030    
031        /**
032         * Ticks the block if it's been scheduled
033         */
034        public void updateTick(World par1World, int par2, int par3, int par4, Random par5Random)
035        {
036            this.fallIfPossible(par1World, par2, par3, par4);
037        }
038    
039        /**
040         * Checks if the dragon egg can fall down, and if so, makes it fall.
041         */
042        private void fallIfPossible(World par1World, int par2, int par3, int par4)
043        {
044            if (BlockSand.canFallBelow(par1World, par2, par3 - 1, par4) && par3 >= 0)
045            {
046                byte var5 = 32;
047    
048                if (!BlockSand.fallInstantly && par1World.checkChunksExist(par2 - var5, par3 - var5, par4 - var5, par2 + var5, par3 + var5, par4 + var5))
049                {
050                    EntityFallingSand var6 = new EntityFallingSand(par1World, (double)((float)par2 + 0.5F), (double)((float)par3 + 0.5F), (double)((float)par4 + 0.5F), this.blockID);
051                    par1World.spawnEntityInWorld(var6);
052                }
053                else
054                {
055                    par1World.setBlockWithNotify(par2, par3, par4, 0);
056    
057                    while (BlockSand.canFallBelow(par1World, par2, par3 - 1, par4) && par3 > 0)
058                    {
059                        --par3;
060                    }
061    
062                    if (par3 > 0)
063                    {
064                        par1World.setBlockWithNotify(par2, par3, par4, this.blockID);
065                    }
066                }
067            }
068        }
069    
070        /**
071         * Called upon block activation (right click on the block.)
072         */
073        public boolean onBlockActivated(World par1World, int par2, int par3, int par4, EntityPlayer par5EntityPlayer, int par6, float par7, float par8, float par9)
074        {
075            this.teleportNearby(par1World, par2, par3, par4);
076            return true;
077        }
078    
079        /**
080         * Called when the block is clicked by a player. Args: x, y, z, entityPlayer
081         */
082        public void onBlockClicked(World par1World, int par2, int par3, int par4, EntityPlayer par5EntityPlayer)
083        {
084            this.teleportNearby(par1World, par2, par3, par4);
085        }
086    
087        /**
088         * Teleports the dragon egg somewhere else in a 31x19x31 area centered on the egg.
089         */
090        private void teleportNearby(World par1World, int par2, int par3, int par4)
091        {
092            if (par1World.getBlockId(par2, par3, par4) == this.blockID)
093            {
094                if (!par1World.isRemote)
095                {
096                    for (int var5 = 0; var5 < 1000; ++var5)
097                    {
098                        int var6 = par2 + par1World.rand.nextInt(16) - par1World.rand.nextInt(16);
099                        int var7 = par3 + par1World.rand.nextInt(8) - par1World.rand.nextInt(8);
100                        int var8 = par4 + par1World.rand.nextInt(16) - par1World.rand.nextInt(16);
101    
102                        if (par1World.getBlockId(var6, var7, var8) == 0)
103                        {
104                            par1World.setBlockAndMetadataWithNotify(var6, var7, var8, this.blockID, par1World.getBlockMetadata(par2, par3, par4));
105                            par1World.setBlockWithNotify(par2, par3, par4, 0);
106                            short var9 = 128;
107    
108                            for (int var10 = 0; var10 < var9; ++var10)
109                            {
110                                double var11 = par1World.rand.nextDouble();
111                                float var13 = (par1World.rand.nextFloat() - 0.5F) * 0.2F;
112                                float var14 = (par1World.rand.nextFloat() - 0.5F) * 0.2F;
113                                float var15 = (par1World.rand.nextFloat() - 0.5F) * 0.2F;
114                                double var16 = (double)var6 + (double)(par2 - var6) * var11 + (par1World.rand.nextDouble() - 0.5D) * 1.0D + 0.5D;
115                                double var18 = (double)var7 + (double)(par3 - var7) * var11 + par1World.rand.nextDouble() * 1.0D - 0.5D;
116                                double var20 = (double)var8 + (double)(par4 - var8) * var11 + (par1World.rand.nextDouble() - 0.5D) * 1.0D + 0.5D;
117                                par1World.spawnParticle("portal", var16, var18, var20, (double)var13, (double)var14, (double)var15);
118                            }
119    
120                            return;
121                        }
122                    }
123                }
124            }
125        }
126    
127        /**
128         * How many world ticks before ticking
129         */
130        public int tickRate()
131        {
132            return 3;
133        }
134    
135        /**
136         * Is this block (a) opaque and (b) a full 1m cube?  This determines whether or not to render the shared face of two
137         * adjacent blocks and also whether the player can attach torches, redstone wire, etc to this block.
138         */
139        public boolean isOpaqueCube()
140        {
141            return false;
142        }
143    
144        /**
145         * If this block doesn't render as an ordinary block it will return False (examples: signs, buttons, stairs, etc)
146         */
147        public boolean renderAsNormalBlock()
148        {
149            return false;
150        }
151    
152        /**
153         * The type of render function that is called for this block
154         */
155        public int getRenderType()
156        {
157            return 27;
158        }
159    
160        @SideOnly(Side.CLIENT)
161    
162        /**
163         * only called by clickMiddleMouseButton , and passed to inventory.setCurrentItem (along with isCreative)
164         */
165        public int idPicked(World par1World, int par2, int par3, int par4)
166        {
167            return 0;
168        }
169    }