001    package net.minecraft.src;
002    
003    import java.util.Random;
004    
005    public class BlockStationary extends BlockFluid
006    {
007        protected BlockStationary(int par1, Material par2Material)
008        {
009            super(par1, par2Material);
010            this.setTickRandomly(false);
011    
012            if (par2Material == Material.lava)
013            {
014                this.setTickRandomly(true);
015            }
016        }
017    
018        public boolean getBlocksMovement(IBlockAccess par1IBlockAccess, int par2, int par3, int par4)
019        {
020            return this.blockMaterial != Material.lava;
021        }
022    
023        /**
024         * Lets the block know when one of its neighbor changes. Doesn't know which neighbor changed (coordinates passed are
025         * their own) Args: x, y, z, neighbor blockID
026         */
027        public void onNeighborBlockChange(World par1World, int par2, int par3, int par4, int par5)
028        {
029            super.onNeighborBlockChange(par1World, par2, par3, par4, par5);
030    
031            if (par1World.getBlockId(par2, par3, par4) == this.blockID)
032            {
033                this.setNotStationary(par1World, par2, par3, par4);
034            }
035        }
036    
037        /**
038         * Changes the block ID to that of an updating fluid.
039         */
040        private void setNotStationary(World par1World, int par2, int par3, int par4)
041        {
042            int var5 = par1World.getBlockMetadata(par2, par3, par4);
043            par1World.editingBlocks = true;
044            par1World.setBlockAndMetadata(par2, par3, par4, this.blockID - 1, var5);
045            par1World.markBlocksDirty(par2, par3, par4, par2, par3, par4);
046            par1World.scheduleBlockUpdate(par2, par3, par4, this.blockID - 1, this.tickRate());
047            par1World.editingBlocks = false;
048        }
049    
050        /**
051         * Ticks the block if it's been scheduled
052         */
053        public void updateTick(World par1World, int par2, int par3, int par4, Random par5Random)
054        {
055            if (this.blockMaterial == Material.lava)
056            {
057                int var6 = par5Random.nextInt(3);
058                int var7;
059                int var8;
060    
061                for (var7 = 0; var7 < var6; ++var7)
062                {
063                    par2 += par5Random.nextInt(3) - 1;
064                    ++par3;
065                    par4 += par5Random.nextInt(3) - 1;
066                    var8 = par1World.getBlockId(par2, par3, par4);
067    
068                    if (var8 == 0)
069                    {
070                        if (this.isFlammable(par1World, par2 - 1, par3, par4) || this.isFlammable(par1World, par2 + 1, par3, par4) || this.isFlammable(par1World, par2, par3, par4 - 1) || this.isFlammable(par1World, par2, par3, par4 + 1) || this.isFlammable(par1World, par2, par3 - 1, par4) || this.isFlammable(par1World, par2, par3 + 1, par4))
071                        {
072                            par1World.setBlockWithNotify(par2, par3, par4, Block.fire.blockID);
073                            return;
074                        }
075                    }
076                    else if (Block.blocksList[var8].blockMaterial.blocksMovement())
077                    {
078                        return;
079                    }
080                }
081    
082                if (var6 == 0)
083                {
084                    var7 = par2;
085                    var8 = par4;
086    
087                    for (int var9 = 0; var9 < 3; ++var9)
088                    {
089                        par2 = var7 + par5Random.nextInt(3) - 1;
090                        par4 = var8 + par5Random.nextInt(3) - 1;
091    
092                        if (par1World.isAirBlock(par2, par3 + 1, par4) && this.isFlammable(par1World, par2, par3, par4))
093                        {
094                            par1World.setBlockWithNotify(par2, par3 + 1, par4, Block.fire.blockID);
095                        }
096                    }
097                }
098            }
099        }
100    
101        /**
102         * Checks to see if the block is flammable.
103         */
104        private boolean isFlammable(World par1World, int par2, int par3, int par4)
105        {
106            return par1World.getBlockMaterial(par2, par3, par4).getCanBurn();
107        }
108    }