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 }