001package net.minecraft.block; 002 003import cpw.mods.fml.relauncher.Side; 004import cpw.mods.fml.relauncher.SideOnly; 005import java.util.List; 006import java.util.Random; 007import net.minecraft.block.material.Material; 008import net.minecraft.entity.Entity; 009import net.minecraft.util.AxisAlignedBB; 010import net.minecraft.util.Facing; 011import net.minecraft.world.IBlockAccess; 012import net.minecraft.world.World; 013 014public abstract class BlockHalfSlab extends Block 015{ 016 protected final boolean isDoubleSlab; 017 018 public BlockHalfSlab(int par1, boolean par2, Material par3Material) 019 { 020 super(par1, par3Material); 021 this.isDoubleSlab = par2; 022 023 if (par2) 024 { 025 opaqueCubeLookup[par1] = true; 026 } 027 else 028 { 029 this.setBlockBounds(0.0F, 0.0F, 0.0F, 1.0F, 0.5F, 1.0F); 030 } 031 032 this.setLightOpacity(255); 033 } 034 035 /** 036 * Updates the blocks bounds based on its current state. Args: world, x, y, z 037 */ 038 public void setBlockBoundsBasedOnState(IBlockAccess par1IBlockAccess, int par2, int par3, int par4) 039 { 040 if (this.isDoubleSlab) 041 { 042 this.setBlockBounds(0.0F, 0.0F, 0.0F, 1.0F, 1.0F, 1.0F); 043 } 044 else 045 { 046 boolean flag = (par1IBlockAccess.getBlockMetadata(par2, par3, par4) & 8) != 0; 047 048 if (flag) 049 { 050 this.setBlockBounds(0.0F, 0.5F, 0.0F, 1.0F, 1.0F, 1.0F); 051 } 052 else 053 { 054 this.setBlockBounds(0.0F, 0.0F, 0.0F, 1.0F, 0.5F, 1.0F); 055 } 056 } 057 } 058 059 /** 060 * Sets the block's bounds for rendering it as an item 061 */ 062 public void setBlockBoundsForItemRender() 063 { 064 if (this.isDoubleSlab) 065 { 066 this.setBlockBounds(0.0F, 0.0F, 0.0F, 1.0F, 1.0F, 1.0F); 067 } 068 else 069 { 070 this.setBlockBounds(0.0F, 0.0F, 0.0F, 1.0F, 0.5F, 1.0F); 071 } 072 } 073 074 /** 075 * Adds all intersecting collision boxes to a list. (Be sure to only add boxes to the list if they intersect the 076 * mask.) Parameters: World, X, Y, Z, mask, list, colliding entity 077 */ 078 public void addCollisionBoxesToList(World par1World, int par2, int par3, int par4, AxisAlignedBB par5AxisAlignedBB, List par6List, Entity par7Entity) 079 { 080 this.setBlockBoundsBasedOnState(par1World, par2, par3, par4); 081 super.addCollisionBoxesToList(par1World, par2, par3, par4, par5AxisAlignedBB, par6List, par7Entity); 082 } 083 084 /** 085 * Is this block (a) opaque and (b) a full 1m cube? This determines whether or not to render the shared face of two 086 * adjacent blocks and also whether the player can attach torches, redstone wire, etc to this block. 087 */ 088 public boolean isOpaqueCube() 089 { 090 return this.isDoubleSlab; 091 } 092 093 /** 094 * Called when a block is placed using its ItemBlock. Args: World, X, Y, Z, side, hitX, hitY, hitZ, block metadata 095 */ 096 public int onBlockPlaced(World par1World, int par2, int par3, int par4, int par5, float par6, float par7, float par8, int par9) 097 { 098 return this.isDoubleSlab ? par9 : (par5 != 0 && (par5 == 1 || (double)par7 <= 0.5D) ? par9 : par9 | 8); 099 } 100 101 /** 102 * Returns the quantity of items to drop on block destruction. 103 */ 104 public int quantityDropped(Random par1Random) 105 { 106 return this.isDoubleSlab ? 2 : 1; 107 } 108 109 /** 110 * Determines the damage on the item the block drops. Used in cloth and wood. 111 */ 112 public int damageDropped(int par1) 113 { 114 return par1 & 7; 115 } 116 117 /** 118 * If this block doesn't render as an ordinary block it will return False (examples: signs, buttons, stairs, etc) 119 */ 120 public boolean renderAsNormalBlock() 121 { 122 return this.isDoubleSlab; 123 } 124 125 @SideOnly(Side.CLIENT) 126 127 /** 128 * Returns true if the given side of this block type should be rendered, if the adjacent block is at the given 129 * coordinates. Args: blockAccess, x, y, z, side 130 */ 131 public boolean shouldSideBeRendered(IBlockAccess par1IBlockAccess, int par2, int par3, int par4, int par5) 132 { 133 if (this.isDoubleSlab) 134 { 135 return super.shouldSideBeRendered(par1IBlockAccess, par2, par3, par4, par5); 136 } 137 else if (par5 != 1 && par5 != 0 && !super.shouldSideBeRendered(par1IBlockAccess, par2, par3, par4, par5)) 138 { 139 return false; 140 } 141 else 142 { 143 int i1 = par2 + Facing.offsetsXForSide[Facing.faceToSide[par5]]; 144 int j1 = par3 + Facing.offsetsYForSide[Facing.faceToSide[par5]]; 145 int k1 = par4 + Facing.offsetsZForSide[Facing.faceToSide[par5]]; 146 boolean flag = (par1IBlockAccess.getBlockMetadata(i1, j1, k1) & 8) != 0; 147 return flag ? (par5 == 0 ? true : (par5 == 1 && super.shouldSideBeRendered(par1IBlockAccess, par2, par3, par4, par5) ? true : !isBlockSingleSlab(par1IBlockAccess.getBlockId(par2, par3, par4)) || (par1IBlockAccess.getBlockMetadata(par2, par3, par4) & 8) == 0)) : (par5 == 1 ? true : (par5 == 0 && super.shouldSideBeRendered(par1IBlockAccess, par2, par3, par4, par5) ? true : !isBlockSingleSlab(par1IBlockAccess.getBlockId(par2, par3, par4)) || (par1IBlockAccess.getBlockMetadata(par2, par3, par4) & 8) != 0)); 148 } 149 } 150 151 @SideOnly(Side.CLIENT) 152 153 /** 154 * Takes a block ID, returns true if it's the same as the ID for a stone or wooden single slab. 155 */ 156 private static boolean isBlockSingleSlab(int par0) 157 { 158 return par0 == Block.stoneSingleSlab.blockID || par0 == Block.woodSingleSlab.blockID; 159 } 160 161 /** 162 * Returns the slab block name with step type. 163 */ 164 public abstract String getFullSlabName(int i); 165 166 /** 167 * Get the block's damage value (for use with pick block). 168 */ 169 public int getDamageValue(World par1World, int par2, int par3, int par4) 170 { 171 return super.getDamageValue(par1World, par2, par3, par4) & 7; 172 } 173 174 @SideOnly(Side.CLIENT) 175 176 /** 177 * only called by clickMiddleMouseButton , and passed to inventory.setCurrentItem (along with isCreative) 178 */ 179 public int idPicked(World par1World, int par2, int par3, int par4) 180 { 181 return isBlockSingleSlab(this.blockID) ? this.blockID : (this.blockID == Block.stoneDoubleSlab.blockID ? Block.stoneSingleSlab.blockID : (this.blockID == Block.woodDoubleSlab.blockID ? Block.woodSingleSlab.blockID : Block.stoneSingleSlab.blockID)); 182 } 183}