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 BlockSign extends BlockContainer 008 { 009 private Class signEntityClass; 010 011 /** Whether this is a freestanding sign or a wall-mounted sign */ 012 private boolean isFreestanding; 013 014 protected BlockSign(int par1, Class par2Class, boolean par3) 015 { 016 super(par1, Material.wood); 017 this.isFreestanding = par3; 018 this.blockIndexInTexture = 4; 019 this.signEntityClass = par2Class; 020 float var4 = 0.25F; 021 float var5 = 1.0F; 022 this.setBlockBounds(0.5F - var4, 0.0F, 0.5F - var4, 0.5F + var4, var5, 0.5F + var4); 023 } 024 025 /** 026 * Returns a bounding box from the pool of bounding boxes (this means this box can change after the pool has been 027 * cleared to be reused) 028 */ 029 public AxisAlignedBB getCollisionBoundingBoxFromPool(World par1World, int par2, int par3, int par4) 030 { 031 return null; 032 } 033 034 @SideOnly(Side.CLIENT) 035 036 /** 037 * Returns the bounding box of the wired rectangular prism to render. 038 */ 039 public AxisAlignedBB getSelectedBoundingBoxFromPool(World par1World, int par2, int par3, int par4) 040 { 041 this.setBlockBoundsBasedOnState(par1World, par2, par3, par4); 042 return super.getSelectedBoundingBoxFromPool(par1World, par2, par3, par4); 043 } 044 045 /** 046 * Updates the blocks bounds based on its current state. Args: world, x, y, z 047 */ 048 public void setBlockBoundsBasedOnState(IBlockAccess par1IBlockAccess, int par2, int par3, int par4) 049 { 050 if (!this.isFreestanding) 051 { 052 int var5 = par1IBlockAccess.getBlockMetadata(par2, par3, par4); 053 float var6 = 0.28125F; 054 float var7 = 0.78125F; 055 float var8 = 0.0F; 056 float var9 = 1.0F; 057 float var10 = 0.125F; 058 this.setBlockBounds(0.0F, 0.0F, 0.0F, 1.0F, 1.0F, 1.0F); 059 060 if (var5 == 2) 061 { 062 this.setBlockBounds(var8, var6, 1.0F - var10, var9, var7, 1.0F); 063 } 064 065 if (var5 == 3) 066 { 067 this.setBlockBounds(var8, var6, 0.0F, var9, var7, var10); 068 } 069 070 if (var5 == 4) 071 { 072 this.setBlockBounds(1.0F - var10, var6, var8, 1.0F, var7, var9); 073 } 074 075 if (var5 == 5) 076 { 077 this.setBlockBounds(0.0F, var6, var8, var10, var7, var9); 078 } 079 } 080 } 081 082 /** 083 * The type of render function that is called for this block 084 */ 085 public int getRenderType() 086 { 087 return -1; 088 } 089 090 /** 091 * If this block doesn't render as an ordinary block it will return False (examples: signs, buttons, stairs, etc) 092 */ 093 public boolean renderAsNormalBlock() 094 { 095 return false; 096 } 097 098 public boolean getBlocksMovement(IBlockAccess par1IBlockAccess, int par2, int par3, int par4) 099 { 100 return true; 101 } 102 103 /** 104 * Is this block (a) opaque and (b) a full 1m cube? This determines whether or not to render the shared face of two 105 * adjacent blocks and also whether the player can attach torches, redstone wire, etc to this block. 106 */ 107 public boolean isOpaqueCube() 108 { 109 return false; 110 } 111 112 /** 113 * Returns a new instance of a block's tile entity class. Called on placing the block. 114 */ 115 public TileEntity createNewTileEntity(World par1World) 116 { 117 try 118 { 119 return (TileEntity)this.signEntityClass.newInstance(); 120 } 121 catch (Exception var3) 122 { 123 throw new RuntimeException(var3); 124 } 125 } 126 127 /** 128 * Returns the ID of the items to drop on destruction. 129 */ 130 public int idDropped(int par1, Random par2Random, int par3) 131 { 132 return Item.sign.shiftedIndex; 133 } 134 135 /** 136 * Lets the block know when one of its neighbor changes. Doesn't know which neighbor changed (coordinates passed are 137 * their own) Args: x, y, z, neighbor blockID 138 */ 139 public void onNeighborBlockChange(World par1World, int par2, int par3, int par4, int par5) 140 { 141 boolean var6 = false; 142 143 if (this.isFreestanding) 144 { 145 if (!par1World.getBlockMaterial(par2, par3 - 1, par4).isSolid()) 146 { 147 var6 = true; 148 } 149 } 150 else 151 { 152 int var7 = par1World.getBlockMetadata(par2, par3, par4); 153 var6 = true; 154 155 if (var7 == 2 && par1World.getBlockMaterial(par2, par3, par4 + 1).isSolid()) 156 { 157 var6 = false; 158 } 159 160 if (var7 == 3 && par1World.getBlockMaterial(par2, par3, par4 - 1).isSolid()) 161 { 162 var6 = false; 163 } 164 165 if (var7 == 4 && par1World.getBlockMaterial(par2 + 1, par3, par4).isSolid()) 166 { 167 var6 = false; 168 } 169 170 if (var7 == 5 && par1World.getBlockMaterial(par2 - 1, par3, par4).isSolid()) 171 { 172 var6 = false; 173 } 174 } 175 176 if (var6) 177 { 178 this.dropBlockAsItem(par1World, par2, par3, par4, par1World.getBlockMetadata(par2, par3, par4), 0); 179 par1World.setBlockWithNotify(par2, par3, par4, 0); 180 } 181 182 super.onNeighborBlockChange(par1World, par2, par3, par4, par5); 183 } 184 185 @SideOnly(Side.CLIENT) 186 187 /** 188 * only called by clickMiddleMouseButton , and passed to inventory.setCurrentItem (along with isCreative) 189 */ 190 public int idPicked(World par1World, int par2, int par3, int par4) 191 { 192 return Item.sign.shiftedIndex; 193 } 194 }