package net.minecraftforge.fluids; import java.util.HashMap; import java.util.Map; import java.util.Random; import net.minecraft.block.Block; import net.minecraft.block.material.Material; import net.minecraft.entity.Entity; import net.minecraft.util.AxisAlignedBB; import net.minecraft.util.Vec3; import net.minecraft.world.IBlockAccess; import net.minecraft.world.World; /** * This is a base implementation for Fluid blocks. * * It is highly recommended that you extend this class or one of the Forge-provided child classes. * * @author King Lemming, OvermindDL1 * */ public abstract class BlockFluidBase extends Block implements IFluidBlock { protected final static Map defaultDisplacementIds = new HashMap(); static { defaultDisplacementIds.put(Block.doorWood.blockID, false); defaultDisplacementIds.put(Block.doorIron.blockID, false); defaultDisplacementIds.put(Block.signPost.blockID, false); defaultDisplacementIds.put(Block.signWall.blockID, false); defaultDisplacementIds.put(Block.reed.blockID, false); } protected Map displacementIds = new HashMap(); protected int quantaPerBlock = 8; protected float quantaPerBlockFloat = 8F; protected int density = 1; protected int densityDir = -1; protected int temperature = 295; protected int tickRate = 20; protected int renderPass = 1; protected int maxScaledLight = 0; protected final String fluidName; public BlockFluidBase(int id, Fluid fluid, Material material) { super(id, material); this.setBlockBounds(0.0F, 0.0F, 0.0F, 1.0F, 1.0F, 1.0F); this.setTickRandomly(true); this.disableStats(); this.fluidName = fluid.getName(); this.density = fluid.density; this.temperature = fluid.temperature; this.maxScaledLight = fluid.luminosity; this.tickRate = fluid.viscosity / 200; fluid.setBlockID(id); displacementIds.putAll(defaultDisplacementIds); } public BlockFluidBase setQuantaPerBlock(int quantaPerBlock) { if (quantaPerBlock > 16 || quantaPerBlock < 1) quantaPerBlock = 8; this.quantaPerBlock = quantaPerBlock; this.quantaPerBlockFloat = quantaPerBlock; return this; } public BlockFluidBase setDensity(int density) { if (density == 0) density = 1; this.density = density; this.densityDir = density > 0 ? -1 : 1; return this; } public BlockFluidBase setTemperature(int temperature) { this.temperature = temperature; return this; } public BlockFluidBase setTickRate(int tickRate) { if (tickRate <= 0) tickRate = 20; this.tickRate = tickRate; return this; } public BlockFluidBase setRenderPass(int renderPass) { this.renderPass = renderPass; return this; } public BlockFluidBase setMaxScaledLight(int maxScaledLight) { this.maxScaledLight = maxScaledLight; return this; } /** * Returns true if the block at (x, y, z) is displaceable. Does not displace the block. */ public boolean canDisplace(IBlockAccess world, int x, int y, int z) { if (world.isAirBlock(x, y, z)) return true; int bId = world.getBlockId(x, y, z); if (bId == blockID) { return false; } if (displacementIds.containsKey(bId)) { return displacementIds.get(bId); } Material material = Block.blocksList[bId].blockMaterial; if (material.blocksMovement() || material == Material.portal) { return false; } int density = getDensity(world, x, y, z); if (density == Integer.MAX_VALUE) { return true; } if (this.density > density) { return true; } else { return false; } } /** * Attempt to displace the block at (x, y, z), return true if it was displaced. */ public boolean displaceIfPossible(World world, int x, int y, int z) { if (world.isAirBlock(x, y, z)) { return true; } int bId = world.getBlockId(x, y, z); if (bId == blockID) { return false; } if (displacementIds.containsKey(bId)) { if (displacementIds.get(bId)) { Block.blocksList[bId].dropBlockAsItem(world, x, y, z, world.getBlockMetadata(x, y, z), 0); return true; } return false; } Material material = Block.blocksList[bId].blockMaterial; if (material.blocksMovement() || material == Material.portal) { return false; } int density = getDensity(world, x, y, z); if (density == Integer.MAX_VALUE) { Block.blocksList[bId].dropBlockAsItem(world, x, y, z, world.getBlockMetadata(x, y, z), 0); return true; } if (this.density > density) { return true; } else { return false; } } public abstract int getQuantaValue(IBlockAccess world, int x, int y, int z); @Override public abstract boolean canCollideCheck(int meta, boolean fullHit); public abstract int getMaxRenderHeightMeta(); /* BLOCK FUNCTIONS */ @Override public void onBlockAdded(World world, int x, int y, int z) { world.scheduleBlockUpdate(x, y, z, blockID, tickRate); } @Override public void onNeighborBlockChange(World world, int x, int y, int z, int blockId) { world.scheduleBlockUpdate(x, y, z, blockID, tickRate); } // Used to prevent updates on chunk generation @Override public boolean func_82506_l() { return false; } @Override public boolean getBlocksMovement(IBlockAccess world, int x, int y, int z) { return true; } @Override public AxisAlignedBB getCollisionBoundingBoxFromPool(World world, int x, int y, int z) { return null; } @Override public int idDropped(int par1, Random par2Random, int par3) { return 0; } @Override public int quantityDropped(Random par1Random) { return 0; } @Override public int tickRate(World world) { return tickRate; } @Override public void velocityToAddToEntity(World world, int x, int y, int z, Entity entity, Vec3 vec) { if (densityDir > 0) return; Vec3 vec_flow = this.getFlowVector(world, x, y, z); vec.xCoord += vec_flow.xCoord * (quantaPerBlock * 4); vec.yCoord += vec_flow.yCoord * (quantaPerBlock * 4); vec.zCoord += vec_flow.zCoord * (quantaPerBlock * 4); } @Override public int getLightValue(IBlockAccess world, int x, int y, int z) { if (maxScaledLight == 0) { return super.getLightValue(world, x, y, z); } int data = world.getBlockMetadata(x, y, z); return (int) (data / quantaPerBlockFloat * maxScaledLight); } @Override public int getRenderType() { return FluidRegistry.renderIdFluid; } @Override public boolean isOpaqueCube() { return false; } @Override public boolean renderAsNormalBlock() { return false; } @Override public float getBlockBrightness(IBlockAccess world, int x, int y, int z) { float lightThis = world.getLightBrightness(x, y, z); float lightUp = world.getLightBrightness(x, y + 1, z); return lightThis > lightUp ? lightThis : lightUp; } @Override public int getMixedBrightnessForBlock(IBlockAccess world, int x, int y, int z) { int lightThis = world.getLightBrightnessForSkyBlocks(x, y, z, 0); int lightUp = world.getLightBrightnessForSkyBlocks(x, y + 1, z, 0); int lightThisBase = lightThis & 255; int lightUpBase = lightUp & 255; int lightThisExt = lightThis >> 16 & 255; int lightUpExt = lightUp >> 16 & 255; return (lightThisBase > lightUpBase ? lightThisBase : lightUpBase) | ((lightThisExt > lightUpExt ? lightThisExt : lightUpExt) << 16); } @Override public int getRenderBlockPass() { return renderPass; } @Override public boolean shouldSideBeRendered(IBlockAccess world, int x, int y, int z, int side) { if (world.getBlockId(x, y, z) != blockID) { return !world.isBlockOpaqueCube(x, y, z); } Material mat = world.getBlockMaterial(x, y, z); return mat == this.blockMaterial ? false : super.shouldSideBeRendered(world, x, y, z, side); } /* FLUID FUNCTIONS */ public static final int getDensity(IBlockAccess world, int x, int y, int z) { Block block = Block.blocksList[world.getBlockId(x, y, z)]; if (!(block instanceof BlockFluidBase)) { return Integer.MAX_VALUE; } return ((BlockFluidBase)block).density; } public static final int getTemperature(IBlockAccess world, int x, int y, int z) { Block block = Block.blocksList[world.getBlockId(x, y, z)]; if (!(block instanceof BlockFluidBase)) { return Integer.MAX_VALUE; } return ((BlockFluidBase)block).temperature; } public static double getFlowDirection(IBlockAccess world, int x, int y, int z) { Block block = Block.blocksList[world.getBlockId(x, y, z)]; if (!world.getBlockMaterial(x, y, z).isLiquid()) { return -1000.0; } Vec3 vec = ((BlockFluidBase) block).getFlowVector(world, x, y, z); return vec.xCoord == 0.0D && vec.zCoord == 0.0D ? -1000.0D : Math.atan2(vec.zCoord, vec.xCoord) - Math.PI / 2D; } public final int getQuantaValueBelow(IBlockAccess world, int x, int y, int z, int belowThis) { int quantaRemaining = getQuantaValue(world, x, y, z); if (quantaRemaining >= belowThis) { return -1; } return quantaRemaining; } public final int getQuantaValueAbove(IBlockAccess world, int x, int y, int z, int aboveThis) { int quantaRemaining = getQuantaValue(world, x, y, z); if (quantaRemaining <= aboveThis) { return -1; } return quantaRemaining; } public final float getQuantaPercentage(IBlockAccess world, int x, int y, int z) { int quantaRemaining = getQuantaValue(world, x, y, z); return quantaRemaining / quantaPerBlockFloat; } public Vec3 getFlowVector(IBlockAccess world, int x, int y, int z) { Vec3 vec = world.getWorldVec3Pool().getVecFromPool(0.0D, 0.0D, 0.0D); int decay = quantaPerBlock - getQuantaValue(world, x, y, z); for (int side = 0; side < 4; ++side) { int x2 = x; int z2 = z; switch (side) { case 0: --x2; break; case 1: --z2; break; case 2: ++x2; break; case 3: ++z2; break; } int otherDecay = quantaPerBlock - getQuantaValue(world, x2, y, z2); if (otherDecay >= quantaPerBlock) { if (!world.getBlockMaterial(x2, y, z2).blocksMovement()) { otherDecay = quantaPerBlock - getQuantaValue(world, x2, y - 1, z2); if (otherDecay >= 0) { int power = otherDecay - (decay - quantaPerBlock); vec = vec.addVector((x2 - x) * power, (y - y) * power, (z2 - z) * power); } } } else if (otherDecay >= 0) { int power = otherDecay - decay; vec = vec.addVector((x2 - x) * power, (y - y) * power, (z2 - z) * power); } } if (world.getBlockId(x, y + 1, z) == blockID) { boolean flag = isBlockSolid(world, x, y, z - 1, 2) || isBlockSolid(world, x, y, z + 1, 3) || isBlockSolid(world, x - 1, y, z, 4) || isBlockSolid(world, x + 1, y, z, 5) || isBlockSolid(world, x, y + 1, z - 1, 2) || isBlockSolid(world, x, y + 1, z + 1, 3) || isBlockSolid(world, x - 1, y + 1, z, 4) || isBlockSolid(world, x + 1, y + 1, z, 5); if (flag) { vec = vec.normalize().addVector(0.0D, -6.0D, 0.0D); } } vec = vec.normalize(); return vec; } /* IFluidBlock */ @Override public Fluid getFluid() { return FluidRegistry.getFluid(fluidName); } @Override public float getFilledPercentage(World world, int x, int y, int z) { int quantaRemaining = getQuantaValue(world, x, y, z) + 1; float remaining = quantaRemaining / quantaPerBlockFloat; if (remaining > 1) remaining = 1.0f; return remaining * (density > 0 ? 1 : -1); } }