package net.minecraftforge.fluids;
import java.util.HashMap;
import java.util.Map;
import java.util.Random;
import com.google.common.collect.Maps;
import net.minecraft.block.Block;
import net.minecraft.block.material.Material;
import net.minecraft.entity.Entity;
import net.minecraft.init.Blocks;
import net.minecraft.item.Item;
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<Block, Boolean> defaultDisplacements = Maps.newHashMap();
static
{
defaultDisplacements.put(Blocks.wooden_door, false);
defaultDisplacements.put(Blocks.iron_door, false);
defaultDisplacements.put(Blocks.standing_sign, false);
defaultDisplacements.put(Blocks.wall_sign, false);
defaultDisplacements.put(Blocks.reeds, false);
}
protected Map<Block, Boolean> displacements = Maps.newHashMap();
protected int quantaPerBlock = 8;
protected float quantaPerBlockFloat = 8F;
protected int density = 1;
protected int densityDir = -1;
protected int temperature = 300;
protected int tickRate = 20;
protected int renderPass = 1;
protected int maxScaledLight = 0;
protected final String fluidName;
/**
* This is the fluid used in the constructor. Use this reference to configure things
* like icons for your block. It might not be active in the registry, so do
* NOT expose it.
*/
protected final Fluid definedFluid;
public BlockFluidBase(Fluid fluid, Material material)
{
super(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;
this.densityDir = fluid.density > 0 ? -1 : 1;
fluid.setBlock(this);
this.definedFluid = fluid;
displacements.putAll(defaultDisplacements);
}
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.getBlock(x, y, z).isAir(world, x, y, z)) return true;
Block block = world.getBlock(x, y, z);
if (block == this)
{
return false;
}
if (displacements.containsKey(block))
{
return displacements.get(block);
}
Material material = block.getMaterial();
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.getBlock(x, y, z).isAir(world, x, y, z))
{
return true;
}
Block block = world.getBlock(x, y, z);
if (block == this)
{
return false;
}
if (displacements.containsKey(block))
{
if (displacements.get(block))
{
block.dropBlockAsItem(world, x, y, z, world.getBlockMetadata(x, y, z), 0);
return true;
}
return false;
}
Material material = block.getMaterial();
if (material.blocksMovement() || material == Material.portal)
{
return false;
}
int density = getDensity(world, x, y, z);
if (density == Integer.MAX_VALUE)
{
block.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);
/**
* Returns whether the raytracing must ignore this block. Args : metadata, stopOnLiquid
*/
@Override
public abstract boolean canStopRayTrace(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, this, tickRate);
}
@Override
public void onNeighborBlockChange(World world, int x, int y, int z, Block block)
{
world.scheduleBlockUpdate(x, y, z, this, tickRate);
}
// Used to prevent updates on chunk generation
@Override
public boolean requiresUpdates()
{
return false;
}
@Override
public boolean canPlaceBlockAt(World world, int x, int y, int z)
{
return canDisplace(world, x, y, z);
}
@Override
public boolean isPassable(IBlockAccess world, int x, int y, int z)
{
return true;
}
/**
* 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)
*/
@Override
public AxisAlignedBB getCollisionBoundingBoxFromPool(World world, int x, int y, int z)
{
return null;
}
@Override
public Item getItemDropped(int par1, Random par2Random, int par3)
{
return null;
}
/**
* Returns the quantity of items to drop on block destruction.
*/
@Override
public int quantityDropped(Random par1Random)
{
return 0;
}
/**
* How many world ticks before ticking
*/
@Override
public int tickRate(World world)
{
return tickRate;
}
@Override
public void modifyEntityVelocity(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);
}
/**
* The type of render function that is called for this block
*/
@Override
public int getRenderType()
{
return FluidRegistry.renderIdFluid;
}
@Override
public boolean isOpaqueCube()
{
return false;
}
@Override
public boolean renderAsNormalBlock()
{
return false;
}
/* Never used...?
@Override
public float getBlockBrightness(World 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;
}
*/
/**
* How bright to render this block based on the light its receiving. Args: iBlockAccess, x, y, z
*/
@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);
}
/**
* Returns which pass should this block be rendered on. 0 for solids and 1 for alpha
*/
@Override
public int getRenderBlockPass()
{
return renderPass;
}
/**
* Returns true if the given side of this block type should be rendered, if the adjacent block is at the given
* coordinates. Args: blockAccess, x, y, z, side
*/
@Override
public boolean shouldSideBeRendered(IBlockAccess world, int x, int y, int z, int side)
{
Block block = world.getBlock(x, y, z);
if (block != this)
{
return !block.isOpaqueCube();
}
return block.getMaterial() == this.getMaterial() ? 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 = world.getBlock(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 = world.getBlock(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 = world.getBlock(x, y, z);
if (!block.getMaterial().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 = Vec3.createVectorHelper(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.getBlock(x2, y, z2).getMaterial().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.getBlock(x, y + 1, z) == this)
{
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);
}
}