package net.minecraft.block;
import cpw.mods.fml.relauncher.Side;
import cpw.mods.fml.relauncher.SideOnly;
import java.util.List;
import net.minecraft.block.material.Material;
import net.minecraft.client.renderer.texture.IconRegister;
import net.minecraft.creativetab.CreativeTabs;
import net.minecraft.entity.Entity;
import net.minecraft.entity.EntityLiving;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.item.ItemStack;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.tileentity.TileEntityPiston;
import net.minecraft.util.AxisAlignedBB;
import net.minecraft.util.Facing;
import net.minecraft.util.Icon;
import net.minecraft.util.MathHelper;
import net.minecraft.world.IBlockAccess;
import net.minecraft.world.World;
public class BlockPistonBase extends Block
{
/** This pistons is the sticky one? */
private final boolean isSticky;
@SideOnly(Side.CLIENT)
/** Only visible when piston is extended */
private Icon innerTopIcon;
@SideOnly(Side.CLIENT)
/** Bottom side texture */
private Icon bottomIcon;
@SideOnly(Side.CLIENT)
/** Top icon of piston depends on (either sticky or normal) */
private Icon topIcon;
public BlockPistonBase(int par1, boolean par2)
{
super(par1, Material.piston);
this.isSticky = par2;
this.setStepSound(soundStoneFootstep);
this.setHardness(0.5F);
this.setCreativeTab(CreativeTabs.tabRedstone);
}
@SideOnly(Side.CLIENT)
/**
* Return the either 106 or 107 as the texture index depending on the isSticky flag. This will actually never get
* called by TileEntityRendererPiston.renderPiston() because TileEntityPiston.shouldRenderHead() will always return
* false.
*/
public Icon getPistonExtensionTexture()
{
return this.topIcon;
}
@SideOnly(Side.CLIENT)
public void func_96479_b(float par1, float par2, float par3, float par4, float par5, float par6)
{
this.setBlockBounds(par1, par2, par3, par4, par5, par6);
}
@SideOnly(Side.CLIENT)
/**
* From the specified side and block metadata retrieves the blocks texture. Args: side, metadata
*/
public Icon getIcon(int par1, int par2)
{
int k = getOrientation(par2);
return k > 5 ? this.topIcon : (par1 == k ? (!isExtended(par2) && this.minX <= 0.0D && this.minY <= 0.0D && this.minZ <= 0.0D && this.maxX >= 1.0D && this.maxY >= 1.0D && this.maxZ >= 1.0D ? this.topIcon : this.innerTopIcon) : (par1 == Facing.oppositeSide[k] ? this.bottomIcon : this.blockIcon));
}
@SideOnly(Side.CLIENT)
public static Icon func_94496_b(String par0Str)
{
return par0Str == "piston_side" ? Block.pistonBase.blockIcon : (par0Str == "piston_top" ? Block.pistonBase.topIcon : (par0Str == "piston_top_sticky" ? Block.pistonStickyBase.topIcon : (par0Str == "piston_inner_top" ? Block.pistonBase.innerTopIcon : null)));
}
@SideOnly(Side.CLIENT)
/**
* When this method is called, your block should register all the icons it needs with the given IconRegister. This
* is the only chance you get to register icons.
*/
public void registerIcons(IconRegister par1IconRegister)
{
this.blockIcon = par1IconRegister.registerIcon("piston_side");
this.topIcon = par1IconRegister.registerIcon(this.isSticky ? "piston_top_sticky" : "piston_top");
this.innerTopIcon = par1IconRegister.registerIcon("piston_inner_top");
this.bottomIcon = par1IconRegister.registerIcon("piston_bottom");
}
/**
* The type of render function that is called for this block
*/
public int getRenderType()
{
return 16;
}
/**
* Is this block (a) opaque and (b) a full 1m cube? This determines whether or not to render the shared face of two
* adjacent blocks and also whether the player can attach torches, redstone wire, etc to this block.
*/
public boolean isOpaqueCube()
{
return false;
}
/**
* Called upon block activation (right click on the block.)
*/
public boolean onBlockActivated(World par1World, int par2, int par3, int par4, EntityPlayer par5EntityPlayer, int par6, float par7, float par8, float par9)
{
return false;
}
/**
* Called when the block is placed in the world.
*/
public void onBlockPlacedBy(World par1World, int par2, int par3, int par4, EntityLiving par5EntityLiving, ItemStack par6ItemStack)
{
int l = determineOrientation(par1World, par2, par3, par4, par5EntityLiving);
par1World.setBlockMetadataWithNotify(par2, par3, par4, l, 2);
if (!par1World.isRemote)
{
this.updatePistonState(par1World, par2, par3, par4);
}
}
/**
* Lets the block know when one of its neighbor changes. Doesn't know which neighbor changed (coordinates passed are
* their own) Args: x, y, z, neighbor blockID
*/
public void onNeighborBlockChange(World par1World, int par2, int par3, int par4, int par5)
{
if (!par1World.isRemote)
{
this.updatePistonState(par1World, par2, par3, par4);
}
}
/**
* Called whenever the block is added into the world. Args: world, x, y, z
*/
public void onBlockAdded(World par1World, int par2, int par3, int par4)
{
if (!par1World.isRemote && par1World.getBlockTileEntity(par2, par3, par4) == null)
{
this.updatePistonState(par1World, par2, par3, par4);
}
}
/**
* handles attempts to extend or retract the piston.
*/
private void updatePistonState(World par1World, int par2, int par3, int par4)
{
int l = par1World.getBlockMetadata(par2, par3, par4);
int i1 = getOrientation(l);
if (i1 != 7)
{
boolean flag = this.isIndirectlyPowered(par1World, par2, par3, par4, i1);
if (flag && !isExtended(l))
{
if (canExtend(par1World, par2, par3, par4, i1))
{
par1World.addBlockEvent(par2, par3, par4, this.blockID, 0, i1);
}
}
else if (!flag && isExtended(l))
{
par1World.setBlockMetadataWithNotify(par2, par3, par4, i1, 2);
par1World.addBlockEvent(par2, par3, par4, this.blockID, 1, i1);
}
}
}
/**
* checks the block to that side to see if it is indirectly powered.
*/
private boolean isIndirectlyPowered(World par1World, int par2, int par3, int par4, int par5)
{
return par5 != 0 && par1World.getIndirectPowerOutput(par2, par3 - 1, par4, 0) ? true : (par5 != 1 && par1World.getIndirectPowerOutput(par2, par3 + 1, par4, 1) ? true : (par5 != 2 && par1World.getIndirectPowerOutput(par2, par3, par4 - 1, 2) ? true : (par5 != 3 && par1World.getIndirectPowerOutput(par2, par3, par4 + 1, 3) ? true : (par5 != 5 && par1World.getIndirectPowerOutput(par2 + 1, par3, par4, 5) ? true : (par5 != 4 && par1World.getIndirectPowerOutput(par2 - 1, par3, par4, 4) ? true : (par1World.getIndirectPowerOutput(par2, par3, par4, 0) ? true : (par1World.getIndirectPowerOutput(par2, par3 + 2, par4, 1) ? true : (par1World.getIndirectPowerOutput(par2, par3 + 1, par4 - 1, 2) ? true : (par1World.getIndirectPowerOutput(par2, par3 + 1, par4 + 1, 3) ? true : (par1World.getIndirectPowerOutput(par2 - 1, par3 + 1, par4, 4) ? true : par1World.getIndirectPowerOutput(par2 + 1, par3 + 1, par4, 5)))))))))));
}
/**
* Called when the block receives a BlockEvent - see World.addBlockEvent. By default, passes it on to the tile
* entity at this location. Args: world, x, y, z, blockID, EventID, event parameter
*/
public boolean onBlockEventReceived(World par1World, int par2, int par3, int par4, int par5, int par6)
{
if (!par1World.isRemote)
{
boolean flag = this.isIndirectlyPowered(par1World, par2, par3, par4, par6);
if (flag && par5 == 1)
{
par1World.setBlockMetadataWithNotify(par2, par3, par4, par6 | 8, 2);
return false;
}
if (!flag && par5 == 0)
{
return false;
}
}
if (par5 == 0)
{
if (!this.tryExtend(par1World, par2, par3, par4, par6))
{
return false;
}
par1World.setBlockMetadataWithNotify(par2, par3, par4, par6 | 8, 2);
par1World.playSoundEffect((double)par2 + 0.5D, (double)par3 + 0.5D, (double)par4 + 0.5D, "tile.piston.out", 0.5F, par1World.rand.nextFloat() * 0.25F + 0.6F);
}
else if (par5 == 1)
{
TileEntity tileentity = par1World.getBlockTileEntity(par2 + Facing.offsetsXForSide[par6], par3 + Facing.offsetsYForSide[par6], par4 + Facing.offsetsZForSide[par6]);
if (tileentity instanceof TileEntityPiston)
{
((TileEntityPiston)tileentity).clearPistonTileEntity();
}
par1World.setBlock(par2, par3, par4, Block.pistonMoving.blockID, par6, 3);
par1World.setBlockTileEntity(par2, par3, par4, BlockPistonMoving.getTileEntity(this.blockID, par6, par6, false, true));
if (this.isSticky)
{
int j1 = par2 + Facing.offsetsXForSide[par6] * 2;
int k1 = par3 + Facing.offsetsYForSide[par6] * 2;
int l1 = par4 + Facing.offsetsZForSide[par6] * 2;
int i2 = par1World.getBlockId(j1, k1, l1);
int j2 = par1World.getBlockMetadata(j1, k1, l1);
boolean flag1 = false;
if (i2 == Block.pistonMoving.blockID)
{
TileEntity tileentity1 = par1World.getBlockTileEntity(j1, k1, l1);
if (tileentity1 instanceof TileEntityPiston)
{
TileEntityPiston tileentitypiston = (TileEntityPiston)tileentity1;
if (tileentitypiston.getPistonOrientation() == par6 && tileentitypiston.isExtending())
{
tileentitypiston.clearPistonTileEntity();
i2 = tileentitypiston.getStoredBlockID();
j2 = tileentitypiston.getBlockMetadata();
flag1 = true;
}
}
}
if (!flag1 && i2 > 0 && canPushBlock(i2, par1World, j1, k1, l1, false) && (Block.blocksList[i2].getMobilityFlag() == 0 || i2 == Block.pistonBase.blockID || i2 == Block.pistonStickyBase.blockID))
{
par2 += Facing.offsetsXForSide[par6];
par3 += Facing.offsetsYForSide[par6];
par4 += Facing.offsetsZForSide[par6];
par1World.setBlock(par2, par3, par4, Block.pistonMoving.blockID, j2, 3);
par1World.setBlockTileEntity(par2, par3, par4, BlockPistonMoving.getTileEntity(i2, j2, par6, false, false));
par1World.setBlockToAir(j1, k1, l1);
}
else if (!flag1)
{
par1World.setBlockToAir(par2 + Facing.offsetsXForSide[par6], par3 + Facing.offsetsYForSide[par6], par4 + Facing.offsetsZForSide[par6]);
}
}
else
{
par1World.setBlockToAir(par2 + Facing.offsetsXForSide[par6], par3 + Facing.offsetsYForSide[par6], par4 + Facing.offsetsZForSide[par6]);
}
par1World.playSoundEffect((double)par2 + 0.5D, (double)par3 + 0.5D, (double)par4 + 0.5D, "tile.piston.in", 0.5F, par1World.rand.nextFloat() * 0.15F + 0.6F);
}
return true;
}
/**
* Updates the blocks bounds based on its current state. Args: world, x, y, z
*/
public void setBlockBoundsBasedOnState(IBlockAccess par1IBlockAccess, int par2, int par3, int par4)
{
int l = par1IBlockAccess.getBlockMetadata(par2, par3, par4);
if (isExtended(l))
{
switch (getOrientation(l))
{
case 0:
this.setBlockBounds(0.0F, 0.25F, 0.0F, 1.0F, 1.0F, 1.0F);
break;
case 1:
this.setBlockBounds(0.0F, 0.0F, 0.0F, 1.0F, 0.75F, 1.0F);
break;
case 2:
this.setBlockBounds(0.0F, 0.0F, 0.25F, 1.0F, 1.0F, 1.0F);
break;
case 3:
this.setBlockBounds(0.0F, 0.0F, 0.0F, 1.0F, 1.0F, 0.75F);
break;
case 4:
this.setBlockBounds(0.25F, 0.0F, 0.0F, 1.0F, 1.0F, 1.0F);
break;
case 5:
this.setBlockBounds(0.0F, 0.0F, 0.0F, 0.75F, 1.0F, 1.0F);
}
}
else
{
this.setBlockBounds(0.0F, 0.0F, 0.0F, 1.0F, 1.0F, 1.0F);
}
}
/**
* Sets the block's bounds for rendering it as an item
*/
public void setBlockBoundsForItemRender()
{
this.setBlockBounds(0.0F, 0.0F, 0.0F, 1.0F, 1.0F, 1.0F);
}
/**
* Adds all intersecting collision boxes to a list. (Be sure to only add boxes to the list if they intersect the
* mask.) Parameters: World, X, Y, Z, mask, list, colliding entity
*/
public void addCollisionBoxesToList(World par1World, int par2, int par3, int par4, AxisAlignedBB par5AxisAlignedBB, List par6List, Entity par7Entity)
{
this.setBlockBounds(0.0F, 0.0F, 0.0F, 1.0F, 1.0F, 1.0F);
super.addCollisionBoxesToList(par1World, par2, par3, par4, par5AxisAlignedBB, par6List, par7Entity);
}
/**
* Returns a bounding box from the pool of bounding boxes (this means this box can change after the pool has been
* cleared to be reused)
*/
public AxisAlignedBB getCollisionBoundingBoxFromPool(World par1World, int par2, int par3, int par4)
{
this.setBlockBoundsBasedOnState(par1World, par2, par3, par4);
return super.getCollisionBoundingBoxFromPool(par1World, par2, par3, par4);
}
/**
* If this block doesn't render as an ordinary block it will return False (examples: signs, buttons, stairs, etc)
*/
public boolean renderAsNormalBlock()
{
return false;
}
/**
* returns an int which describes the direction the piston faces
*/
public static int getOrientation(int par0)
{
return par0 & 7;
}
/**
* Determine if the metadata is related to something powered.
*/
public static boolean isExtended(int par0)
{
return (par0 & 8) != 0;
}
/**
* gets the way this piston should face for that entity that placed it.
*/
public static int determineOrientation(World par0World, int par1, int par2, int par3, EntityLiving par4EntityLiving)
{
if (MathHelper.abs((float)par4EntityLiving.posX - (float)par1) < 2.0F && MathHelper.abs((float)par4EntityLiving.posZ - (float)par3) < 2.0F)
{
double d0 = par4EntityLiving.posY + 1.82D - (double)par4EntityLiving.yOffset;
if (d0 - (double)par2 > 2.0D)
{
return 1;
}
if ((double)par2 - d0 > 0.0D)
{
return 0;
}
}
int l = MathHelper.floor_double((double)(par4EntityLiving.rotationYaw * 4.0F / 360.0F) + 0.5D) & 3;
return l == 0 ? 2 : (l == 1 ? 5 : (l == 2 ? 3 : (l == 3 ? 4 : 0)));
}
/**
* returns true if the piston can push the specified block
*/
private static boolean canPushBlock(int par0, World par1World, int par2, int par3, int par4, boolean par5)
{
if (par0 == Block.obsidian.blockID)
{
return false;
}
else
{
if (par0 != Block.pistonBase.blockID && par0 != Block.pistonStickyBase.blockID)
{
if (Block.blocksList[par0].getBlockHardness(par1World, par2, par3, par4) == -1.0F)
{
return false;
}
if (Block.blocksList[par0].getMobilityFlag() == 2)
{
return false;
}
if (Block.blocksList[par0].getMobilityFlag() == 1)
{
if (!par5)
{
return false;
}
return true;
}
}
else if (isExtended(par1World.getBlockMetadata(par2, par3, par4)))
{
return false;
}
return !par1World.blockHasTileEntity(par2, par3, par4);
}
}
/**
* checks to see if this piston could push the blocks in front of it.
*/
private static boolean canExtend(World par0World, int par1, int par2, int par3, int par4)
{
int i1 = par1 + Facing.offsetsXForSide[par4];
int j1 = par2 + Facing.offsetsYForSide[par4];
int k1 = par3 + Facing.offsetsZForSide[par4];
int l1 = 0;
while (true)
{
if (l1 < 13)
{
if (j1 <= 0 || j1 >= par0World.getHeight() - 1)
{
return false;
}
int i2 = par0World.getBlockId(i1, j1, k1);
if (i2 != 0)
{
if (!canPushBlock(i2, par0World, i1, j1, k1, true))
{
return false;
}
if (Block.blocksList[i2].getMobilityFlag() != 1)
{
if (l1 == 12)
{
return false;
}
i1 += Facing.offsetsXForSide[par4];
j1 += Facing.offsetsYForSide[par4];
k1 += Facing.offsetsZForSide[par4];
++l1;
continue;
}
}
}
return true;
}
}
/**
* attempts to extend the piston. returns false if impossible.
*/
private boolean tryExtend(World par1World, int par2, int par3, int par4, int par5)
{
int i1 = par2 + Facing.offsetsXForSide[par5];
int j1 = par3 + Facing.offsetsYForSide[par5];
int k1 = par4 + Facing.offsetsZForSide[par5];
int l1 = 0;
while (true)
{
int i2;
if (l1 < 13)
{
if (j1 <= 0 || j1 >= par1World.getHeight() - 1)
{
return false;
}
i2 = par1World.getBlockId(i1, j1, k1);
if (i2 != 0)
{
if (!canPushBlock(i2, par1World, i1, j1, k1, true))
{
return false;
}
if (Block.blocksList[i2].getMobilityFlag() != 1)
{
if (l1 == 12)
{
return false;
}
i1 += Facing.offsetsXForSide[par5];
j1 += Facing.offsetsYForSide[par5];
k1 += Facing.offsetsZForSide[par5];
++l1;
continue;
}
//With our change to how snowballs are dropped this needs to dissallow to mimic vanilla behavior.
float chance = (Block.blocksList[i2] instanceof BlockSnow ? -1.0f : 1.0f);
Block.blocksList[i2].dropBlockAsItemWithChance(par1World, i1, j1, k1, par1World.getBlockMetadata(i1, j1, k1), chance, 0);
par1World.setBlockToAir(i1, j1, k1);
}
}
l1 = i1;
i2 = j1;
int j2 = k1;
int k2 = 0;
int[] aint;
int l2;
int i3;
int j3;
for (aint = new int[13]; i1 != par2 || j1 != par3 || k1 != par4; k1 = j3)
{
l2 = i1 - Facing.offsetsXForSide[par5];
i3 = j1 - Facing.offsetsYForSide[par5];
j3 = k1 - Facing.offsetsZForSide[par5];
int k3 = par1World.getBlockId(l2, i3, j3);
int l3 = par1World.getBlockMetadata(l2, i3, j3);
if (k3 == this.blockID && l2 == par2 && i3 == par3 && j3 == par4)
{
par1World.setBlock(i1, j1, k1, Block.pistonMoving.blockID, par5 | (this.isSticky ? 8 : 0), 4);
par1World.setBlockTileEntity(i1, j1, k1, BlockPistonMoving.getTileEntity(Block.pistonExtension.blockID, par5 | (this.isSticky ? 8 : 0), par5, true, false));
}
else
{
par1World.setBlock(i1, j1, k1, Block.pistonMoving.blockID, l3, 4);
par1World.setBlockTileEntity(i1, j1, k1, BlockPistonMoving.getTileEntity(k3, l3, par5, true, false));
}
aint[k2++] = k3;
i1 = l2;
j1 = i3;
}
i1 = l1;
j1 = i2;
k1 = j2;
for (k2 = 0; i1 != par2 || j1 != par3 || k1 != par4; k1 = j3)
{
l2 = i1 - Facing.offsetsXForSide[par5];
i3 = j1 - Facing.offsetsYForSide[par5];
j3 = k1 - Facing.offsetsZForSide[par5];
par1World.notifyBlocksOfNeighborChange(l2, i3, j3, aint[k2++]);
i1 = l2;
j1 = i3;
}
return true;
}
}
}