271 lines
8.6 KiB
Java
271 lines
8.6 KiB
Java
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package net.minecraftforge.fluids;
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import java.util.Random;
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import net.minecraft.block.Block;
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import net.minecraft.block.material.Material;
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import net.minecraft.world.IBlockAccess;
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import net.minecraft.world.World;
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/**
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* This is a cellular-automata based finite fluid block implementation.
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*
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* It is highly recommended that you use/extend this class for finite fluid blocks.
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*
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* @author OvermindDL1, KingLemming
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*
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*/
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public class BlockFluidFinite extends BlockFluidBase {
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public BlockFluidFinite(int id, Fluid fluid, Material material) {
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super(id, fluid, material);
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}
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@Override
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public int getQuantaValue(IBlockAccess world, int x, int y, int z) {
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if (world.getBlockId(x, y, z) == 0) {
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return 0;
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}
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if (world.getBlockId(x, y, z) != blockID) {
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return -1;
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}
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int quantaRemaining = world.getBlockMetadata(x, y, z) + 1;
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return quantaRemaining;
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}
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@Override
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public boolean canCollideCheck(int meta, boolean fullHit) {
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return fullHit && meta == quantaPerBlock - 1;
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}
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@Override
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public int getMaxRenderHeightMeta() {
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return quantaPerBlock - 1;
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}
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@Override
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public void updateTick(World world, int x, int y, int z, Random rand) {
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boolean changed = false;
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int quantaRemaining = world.getBlockMetadata(x, y, z) + 1;
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// Flow vertically if possible
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int prevRemaining = quantaRemaining;
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quantaRemaining = tryToFlowVerticallyInto(world, x, y, z, quantaRemaining);
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if (quantaRemaining < 1) {
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return;
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} else if (quantaRemaining != prevRemaining) {
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changed = true;
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if (quantaRemaining == 1) {
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world.setBlockMetadataWithNotify(x, y, z, quantaRemaining - 1, 2);
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return;
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}
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} else if (quantaRemaining == 1) {
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return;
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}
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// Flow out if possible
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int lowerthan = quantaRemaining - 1;
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if (displaceIfPossible(world, x, y, z - 1)) {
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world.setBlock(x, y, z - 1, 0);
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}
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if (displaceIfPossible(world, x, y, z + 1)) {
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world.setBlock(x, y, z + 1, 0);
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}
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if (displaceIfPossible(world, x - 1, y, z)) {
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world.setBlock(x - 1, y, z, 0);
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}
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if (displaceIfPossible(world, x + 1, y, z)) {
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world.setBlock(x + 1, y, z, 0);
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}
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int north = getQuantaValueBelow(world, x, y, z - 1, lowerthan);
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int south = getQuantaValueBelow(world, x, y, z + 1, lowerthan);
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int west = getQuantaValueBelow(world, x - 1, y, z, lowerthan);
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int east = getQuantaValueBelow(world, x + 1, y, z, lowerthan);
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int total = quantaRemaining;
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int count = 1;
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if (north >= 0) {
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++count;
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total += north;
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}
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if (south >= 0) {
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++count;
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total += south;
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}
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if (west >= 0) {
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++count;
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total += west;
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}
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if (east >= 0) {
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++count;
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total += east;
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}
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if (count == 1) {
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if (changed) {
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world.setBlockMetadataWithNotify(x, y, z, quantaRemaining - 1, 2);
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}
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return;
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}
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int each = total / count;
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int rem = total % count;
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if (north >= 0) {
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int newnorth = each;
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if (rem == count || rem > 1 && rand.nextInt(count - rem) != 0) {
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++newnorth;
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--rem;
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}
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if (newnorth != north) {
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if (newnorth == 0) {
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world.setBlock(x, y, z - 1, 0);
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} else {
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world.setBlock(x, y, z - 1, blockID, newnorth - 1, 2);
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}
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world.scheduleBlockUpdate(x, y, z - 1, blockID, tickRate);
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}
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--count;
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}
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if (south >= 0) {
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int newsouth = each;
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if (rem == count || rem > 1 && rand.nextInt(count - rem) != 0) {
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++newsouth;
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--rem;
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}
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if (newsouth != south) {
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if (newsouth == 0) {
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world.setBlock(x, y, z + 1, 0);
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} else {
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world.setBlock(x, y, z + 1, blockID, newsouth - 1, 2);
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}
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world.scheduleBlockUpdate(x, y, z + 1, blockID, tickRate);
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}
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--count;
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}
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if (west >= 0) {
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int newwest = each;
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if (rem == count || rem > 1 && rand.nextInt(count - rem) != 0) {
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++newwest;
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--rem;
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}
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if (newwest != west) {
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if (newwest == 0) {
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world.setBlock(x - 1, y, z, 0);
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} else {
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world.setBlock(x - 1, y, z, blockID, newwest - 1, 2);
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}
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world.scheduleBlockUpdate(x - 1, y, z, blockID, tickRate);
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}
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--count;
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}
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if (east >= 0) {
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int neweast = each;
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if (rem == count || rem > 1 && rand.nextInt(count - rem) != 0) {
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++neweast;
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--rem;
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}
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if (neweast != east) {
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if (neweast == 0) {
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world.setBlock(x + 1, y, z, 0);
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} else {
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world.setBlock(x + 1, y, z, blockID, neweast - 1, 2);
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}
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world.scheduleBlockUpdate(x + 1, y, z, blockID, tickRate);
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}
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--count;
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}
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if (rem > 0) {
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++each;
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}
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world.setBlockMetadataWithNotify(x, y, z, each - 1, 2);
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}
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public int tryToFlowVerticallyInto(World world, int x, int y, int z, int amtToInput) {
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int otherY = y + densityDir;
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if (otherY < 0 || otherY >= world.getHeight()) {
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world.setBlockToAir(x, y, z);
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return 0;
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}
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int amt = getQuantaValueBelow(world, x, otherY, z, quantaPerBlock);
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if (amt >= 0) {
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amt += amtToInput;
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if (amt > quantaPerBlock) {
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world.setBlock(x, otherY, z, blockID, quantaPerBlock - 1, 3);
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world.scheduleBlockUpdate(x, otherY, z, blockID, tickRate);
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return amt - quantaPerBlock;
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} else if (amt > 0) {
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world.setBlock(x, otherY, z, blockID, amt - 1, 3);
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world.scheduleBlockUpdate(x, otherY, z, blockID, tickRate);
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world.setBlockToAir(x, y, z);
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return 0;
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}
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return amtToInput;
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} else {
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int density_other = getDensity(world, x, otherY, z);
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if (density_other == Integer.MAX_VALUE) {
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if (displaceIfPossible(world, x, otherY, z)) {
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world.setBlock(x, otherY, z, blockID, amtToInput - 1, 3);
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world.scheduleBlockUpdate(x, otherY, z, blockID, tickRate);
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world.setBlockToAir(x, y, z);
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return 0;
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} else {
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return amtToInput;
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}
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}
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if (densityDir < 0) {
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if (density_other < density) // then swap
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{
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int bId = world.getBlockId(x, otherY, z);
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BlockFluidBase block = (BlockFluidBase) Block.blocksList[bId];
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int otherData = world.getBlockMetadata(x, otherY, z);
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world.setBlock(x, otherY, z, blockID, amtToInput - 1, 3);
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world.setBlock(x, y, z, bId, otherData, 3);
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world.scheduleBlockUpdate(x, otherY, z, blockID, tickRate);
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world.scheduleBlockUpdate(x, y, z, bId, block.tickRate(world));
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return 0;
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}
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} else {
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if (density_other > density) {
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int bId = world.getBlockId(x, otherY, z);
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BlockFluidBase block = (BlockFluidBase) Block.blocksList[bId];
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int otherData = world.getBlockMetadata(x, otherY, z);
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world.setBlock(x, otherY, z, blockID, amtToInput - 1, 3);
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world.setBlock(x, y, z, bId, otherData, 3);
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world.scheduleBlockUpdate(x, otherY, z, blockID, tickRate);
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world.scheduleBlockUpdate(x, y, z, bId, block.tickRate(world));
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return 0;
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}
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}
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return amtToInput;
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}
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}
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/* IFluidBlock */
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@Override
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public FluidStack drain(World world, int x, int y, int z, boolean doDrain) {
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return null;
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}
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@Override
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public boolean canDrain(World world, int x, int y, int z) {
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return false;
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}
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}
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