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cn.nukkit.block.BlockLiquid Maven / Gradle / Ivy
package cn.nukkit.block;
import cn.nukkit.api.PowerNukkitDifference;
import cn.nukkit.api.PowerNukkitOnly;
import cn.nukkit.api.PowerNukkitXOnly;
import cn.nukkit.api.Since;
import cn.nukkit.blockproperty.BlockProperties;
import cn.nukkit.blockproperty.IntBlockProperty;
import cn.nukkit.entity.Entity;
import cn.nukkit.event.block.BlockFromToEvent;
import cn.nukkit.event.block.LiquidFlowEvent;
import cn.nukkit.item.Item;
import cn.nukkit.item.ItemBlock;
import cn.nukkit.level.Level;
import cn.nukkit.level.Sound;
import cn.nukkit.level.particle.SmokeParticle;
import cn.nukkit.math.AxisAlignedBB;
import cn.nukkit.math.BlockFace;
import cn.nukkit.math.Vector3;
import cn.nukkit.network.protocol.LevelEventPacket;
import it.unimi.dsi.fastutil.longs.Long2ByteMap;
import it.unimi.dsi.fastutil.longs.Long2ByteOpenHashMap;
import javax.annotation.Nonnull;
import java.util.Random;
import java.util.concurrent.ThreadLocalRandom;
/**
* @author MagicDroidX (Nukkit Project)
*/
public abstract class BlockLiquid extends BlockTransparentMeta {
@PowerNukkitOnly
@Since("1.4.0.0-PN")
public static final IntBlockProperty LIQUID_DEPTH = new IntBlockProperty("liquid_depth", false, 15);
@PowerNukkitOnly
@Since("1.4.0.0-PN")
public static final BlockProperties PROPERTIES = new BlockProperties(LIQUID_DEPTH);
private static final byte CAN_FLOW_DOWN = 1;
private static final byte CAN_FLOW = 0;
private static final byte BLOCKED = -1;
public int adjacentSources = 0;
protected Vector3 flowVector = null;
private final Long2ByteMap flowCostVisited = new Long2ByteOpenHashMap();
protected BlockLiquid(int meta) {
super(meta);
}
@Since("1.4.0.0-PN")
@PowerNukkitOnly
@Nonnull
@Override
public BlockProperties getProperties() {
return PROPERTIES;
}
@Override
public boolean canBeFlowedInto() {
return true;
}
@Override
protected AxisAlignedBB recalculateBoundingBox() {
return null;
}
@Override
public Item[] getDrops(Item item) {
return Item.EMPTY_ARRAY;
}
@Override
public boolean hasEntityCollision() {
return true;
}
@Override
public boolean isBreakable(Item item) {
return false;
}
@Override
public boolean canBeReplaced() {
return true;
}
@Override
public boolean isSolid() {
return false;
}
@Since("1.3.0.0-PN")
@PowerNukkitOnly
@Override
public boolean isSolid(BlockFace side) {
return false;
}
@Override
public boolean canHarvestWithHand() {
return false;
}
@Override
public AxisAlignedBB getBoundingBox() {
return null;
}
@Override
public double getMaxY() {
return this.y + 1 - getFluidHeightPercent();
}
@Override
protected AxisAlignedBB recalculateCollisionBoundingBox() {
return this;
}
@PowerNukkitOnly
public boolean usesWaterLogging() {
return false;
}
public float getFluidHeightPercent() {
float d = getLiquidDepth();
if (d >= 8) {
d = 0;
}
return (d + 1) / 9f;
}
protected int getFlowDecay(Block block) {
if (block.getId() != this.getId()) {
Block layer1 = block.getLevelBlockAtLayer(1);
if (layer1.getId() != this.getId()) {
return -1;
} else {
return ((BlockLiquid) layer1).getLiquidDepth();
}
}
return ((BlockLiquid) block).getLiquidDepth();
}
protected int getEffectiveFlowDecay(Block block) {
if (block.getId() != this.getId()) {
block = block.getLevelBlockAtLayer(1);
if (block.getId() != this.getId()) {
return -1;
}
}
int decay = ((BlockLiquid) block).getLiquidDepth();
if (decay >= 8) {
decay = 0;
}
return decay;
}
public void clearCaches() {
this.flowVector = null;
this.flowCostVisited.clear();
}
public Vector3 getFlowVector() {
if (this.flowVector != null) {
return this.flowVector;
}
Vector3 vector = new Vector3(0, 0, 0);
int decay = this.getEffectiveFlowDecay(this);
for (int j = 0; j < 4; ++j) {
int x = (int) this.x;
int y = (int) this.y;
int z = (int) this.z;
switch (j) {
case 0:
--x;
break;
case 1:
x++;
break;
case 2:
z--;
break;
default:
z++;
}
Block sideBlock = this.level.getBlock(x, y, z);
int blockDecay = this.getEffectiveFlowDecay(sideBlock);
if (blockDecay < 0) {
if (!sideBlock.canBeFlowedInto()) {
continue;
}
blockDecay = this.getEffectiveFlowDecay(this.level.getBlock(x, y - 1, z));
if (blockDecay >= 0) {
int realDecay = blockDecay - (decay - 8);
vector.x += (sideBlock.x - this.x) * realDecay;
vector.y += (sideBlock.y - this.y) * realDecay;
vector.z += (sideBlock.z - this.z) * realDecay;
}
} else {
int realDecay = blockDecay - decay;
vector.x += (sideBlock.x - this.x) * realDecay;
vector.y += (sideBlock.y - this.y) * realDecay;
vector.z += (sideBlock.z - this.z) * realDecay;
}
}
if (getLiquidDepth() >= 8) {
if (!this.canFlowInto(this.level.getBlock((int) this.x, (int) this.y, (int) this.z - 1)) ||
!this.canFlowInto(this.level.getBlock((int) this.x, (int) this.y, (int) this.z + 1)) ||
!this.canFlowInto(this.level.getBlock((int) this.x - 1, (int) this.y, (int) this.z)) ||
!this.canFlowInto(this.level.getBlock((int) this.x + 1, (int) this.y, (int) this.z)) ||
!this.canFlowInto(this.level.getBlock((int) this.x, (int) this.y + 1, (int) this.z - 1)) ||
!this.canFlowInto(this.level.getBlock((int) this.x, (int) this.y + 1, (int) this.z + 1)) ||
!this.canFlowInto(this.level.getBlock((int) this.x - 1, (int) this.y + 1, (int) this.z)) ||
!this.canFlowInto(this.level.getBlock((int) this.x + 1, (int) this.y + 1, (int) this.z))) {
vector = vector.normalize().add(0, -6, 0);
}
}
return this.flowVector = vector.normalize();
}
@Override
public void addVelocityToEntity(Entity entity, Vector3 vector) {
if (entity.canBeMovedByCurrents()) {
Vector3 flow = this.getFlowVector();
vector.x += flow.x;
vector.y += flow.y;
vector.z += flow.z;
}
}
public int getFlowDecayPerBlock() {
return 1;
}
@Override
public int onUpdate(int type) {
if (type == Level.BLOCK_UPDATE_NORMAL) {
this.checkForHarden();
if (usesWaterLogging() && layer > 0) {
Block layer0 = this.level.getBlock(this, 0);
if (layer0.getId() == 0) {
this.level.setBlock(this, 1, Block.get(BlockID.AIR), false, false);
this.level.setBlock(this, 0, this, false, false);
} else if (layer0.getWaterloggingLevel() <= 0 || layer0.getWaterloggingLevel() == 1 && getLiquidDepth() > 0) {
this.level.setBlock(this, 1, Block.get(BlockID.AIR), true, true);
}
}
this.level.scheduleUpdate(this, this.tickRate());
return 0;
} else if (type == Level.BLOCK_UPDATE_SCHEDULED) {
int decay = this.getFlowDecay(this);
int multiplier = this.getFlowDecayPerBlock();
if (decay > 0) {
int smallestFlowDecay = -100;
this.adjacentSources = 0;
smallestFlowDecay = this.getSmallestFlowDecay(this.level.getBlock((int) this.x, (int) this.y, (int) this.z - 1), smallestFlowDecay);
smallestFlowDecay = this.getSmallestFlowDecay(this.level.getBlock((int) this.x, (int) this.y, (int) this.z + 1), smallestFlowDecay);
smallestFlowDecay = this.getSmallestFlowDecay(this.level.getBlock((int) this.x - 1, (int) this.y, (int) this.z), smallestFlowDecay);
smallestFlowDecay = this.getSmallestFlowDecay(this.level.getBlock((int) this.x + 1, (int) this.y, (int) this.z), smallestFlowDecay);
int newDecay = smallestFlowDecay + multiplier;
if (newDecay >= 8 || smallestFlowDecay < 0) {
newDecay = -1;
}
int topFlowDecay = this.getFlowDecay(this.level.getBlock((int) this.x, (int) this.y + 1, (int) this.z));
if (topFlowDecay >= 0) {
newDecay = topFlowDecay | 0x08;
}
if (this.adjacentSources >= 2 && this instanceof BlockWater) {
Block bottomBlock = this.level.getBlock((int) this.x, (int) this.y - 1, (int) this.z);
if (bottomBlock.isSolid()) {
newDecay = 0;
} else if (bottomBlock instanceof BlockWater && ((BlockWater) bottomBlock).getLiquidDepth() == 0) {
newDecay = 0;
} else {
bottomBlock = bottomBlock.getLevelBlockAtLayer(1);
if (bottomBlock instanceof BlockWater && ((BlockWater) bottomBlock).getLiquidDepth() == 0) {
newDecay = 0;
}
}
}
if (newDecay != decay) {
decay = newDecay;
boolean decayed = decay < 0;
Block to;
if (decayed) {
to = Block.get(BlockID.AIR);
} else {
to = getBlock(decay);
}
BlockFromToEvent event = new BlockFromToEvent(this, to);
level.getServer().getPluginManager().callEvent(event);
if (!event.isCancelled()) {
this.level.setBlock(this, layer, event.getTo(), true, true);
if (!decayed) {
this.level.scheduleUpdate(this, this.tickRate());
}
}
}
}
if (decay >= 0) {
Block bottomBlock = this.level.getBlock((int) this.x, (int) this.y - 1, (int) this.z);
this.flowIntoBlock(bottomBlock, decay | 0x08);
if (decay == 0 || !(usesWaterLogging() ? bottomBlock.canWaterloggingFlowInto() : bottomBlock.canBeFlowedInto())) {
int adjacentDecay;
if (decay >= 8) {
adjacentDecay = 1;
} else {
adjacentDecay = decay + multiplier;
}
if (adjacentDecay < 8) {
boolean[] flags = this.getOptimalFlowDirections();
if (flags[0]) {
this.flowIntoBlock(this.level.getBlock((int) this.x - 1, (int) this.y, (int) this.z), adjacentDecay);
}
if (flags[1]) {
this.flowIntoBlock(this.level.getBlock((int) this.x + 1, (int) this.y, (int) this.z), adjacentDecay);
}
if (flags[2]) {
this.flowIntoBlock(this.level.getBlock((int) this.x, (int) this.y, (int) this.z - 1), adjacentDecay);
}
if (flags[3]) {
this.flowIntoBlock(this.level.getBlock((int) this.x, (int) this.y, (int) this.z + 1), adjacentDecay);
}
}
}
this.checkForHarden();
}
}
return 0;
}
protected void flowIntoBlock(Block block, int newFlowDecay) {
if (this.canFlowInto(block) && !(block instanceof BlockLiquid)) {
if (usesWaterLogging()) {
Block layer1 = block.getLevelBlockAtLayer(1);
if (layer1 instanceof BlockLiquid) {
return;
}
if (block.getWaterloggingLevel() > 1) {
block = layer1;
}
}
LiquidFlowEvent event = new LiquidFlowEvent(block, this, newFlowDecay);
level.getServer().getPluginManager().callEvent(event);
if (!event.isCancelled()) {
if (block.layer == 0 && block.getId() > 0) {
this.level.useBreakOn(block, block.getId() == COBWEB ? Item.get(Item.WOODEN_SWORD) : null);
}
this.level.setBlock(block, block.layer, getBlock(newFlowDecay), true, true);
this.level.scheduleUpdate(block, this.tickRate());
}
}
}
private int calculateFlowCost(int blockX, int blockY, int blockZ, int accumulatedCost, int maxCost, int originOpposite, int lastOpposite) {
int cost = 1000;
for (int j = 0; j < 4; ++j) {
if (j == originOpposite || j == lastOpposite) {
continue;
}
int x = blockX;
int y = blockY;
int z = blockZ;
if (j == 0) {
--x;
} else if (j == 1) {
++x;
} else if (j == 2) {
--z;
} else if (j == 3) {
++z;
}
long hash = Level.blockHash(x, y, z, this.getLevel());
if (!this.flowCostVisited.containsKey(hash)) {
Block blockSide = this.level.getBlock(x, y, z);
if (!this.canFlowInto(blockSide)) {
this.flowCostVisited.put(hash, BLOCKED);
} else if (usesWaterLogging() ?
this.level.getBlock(x, y - 1, z).canWaterloggingFlowInto() :
this.level.getBlock(x, y - 1, z).canBeFlowedInto()) {
this.flowCostVisited.put(hash, CAN_FLOW_DOWN);
} else {
this.flowCostVisited.put(hash, CAN_FLOW);
}
}
byte status = this.flowCostVisited.get(hash);
if (status == BLOCKED) {
continue;
} else if (status == CAN_FLOW_DOWN) {
return accumulatedCost;
}
if (accumulatedCost >= maxCost) {
continue;
}
int realCost = this.calculateFlowCost(x, y, z, accumulatedCost + 1, maxCost, originOpposite, j ^ 0x01);
if (realCost < cost) {
cost = realCost;
}
}
return cost;
}
@Override
public double getHardness() {
return 100d;
}
@Override
public double getResistance() {
return 500;
}
private boolean[] getOptimalFlowDirections() {
int[] flowCost = new int[]{
1000,
1000,
1000,
1000
};
int maxCost = 4 / this.getFlowDecayPerBlock();
for (int j = 0; j < 4; ++j) {
int x = (int) this.x;
int y = (int) this.y;
int z = (int) this.z;
if (j == 0) {
--x;
} else if (j == 1) {
++x;
} else if (j == 2) {
--z;
} else {
++z;
}
Block block = this.level.getBlock(x, y, z);
if (!this.canFlowInto(block)) {
this.flowCostVisited.put(Level.blockHash(x, y, z, this.getLevel()), BLOCKED);
} else if (usesWaterLogging() ?
this.level.getBlock(x, y - 1, z).canWaterloggingFlowInto() :
this.level.getBlock(x, y - 1, z).canBeFlowedInto()) {
this.flowCostVisited.put(Level.blockHash(x, y, z, this.getLevel()), CAN_FLOW_DOWN);
flowCost[j] = maxCost = 0;
} else if (maxCost > 0) {
this.flowCostVisited.put(Level.blockHash(x, y, z, this.getLevel()), CAN_FLOW);
flowCost[j] = this.calculateFlowCost(x, y, z, 1, maxCost, j ^ 0x01, j ^ 0x01);
maxCost = Math.min(maxCost, flowCost[j]);
}
}
this.flowCostVisited.clear();
double minCost = Double.MAX_VALUE;
for (int i = 0; i < 4; i++) {
double d = flowCost[i];
if (d < minCost) {
minCost = d;
}
}
boolean[] isOptimalFlowDirection = new boolean[4];
for (int i = 0; i < 4; ++i) {
isOptimalFlowDirection[i] = (flowCost[i] == minCost);
}
return isOptimalFlowDirection;
}
private int getSmallestFlowDecay(Block block, int decay) {
int blockDecay = this.getFlowDecay(block);
if (blockDecay < 0) {
return decay;
} else if (blockDecay == 0) {
++this.adjacentSources;
} else if (blockDecay >= 8) {
blockDecay = 0;
}
return (decay >= 0 && blockDecay >= decay) ? decay : blockDecay;
}
protected void checkForHarden() {
}
protected void triggerLavaMixEffects(Vector3 pos) {
Random random = ThreadLocalRandom.current();
this.getLevel().addLevelEvent(pos.add(0.5, 0.5, 0.5), LevelEventPacket.EVENT_SOUND_FIZZ, (int) ((random.nextFloat() - random.nextFloat()) * 800) + 2600);
for (int i = 0; i < 8; ++i) {
this.getLevel().addParticle(new SmokeParticle(pos.add(Math.random(), 1.2, Math.random())));
}
}
public abstract BlockLiquid getBlock(int meta);
@Override
public boolean canPassThrough() {
return true;
}
@Override
public void onEntityCollide(Entity entity) {
entity.resetFallDistance();
}
@PowerNukkitDifference(info = "Using new method to play sounds", since = "1.4.0.0-PN")
protected boolean liquidCollide(Block cause, Block result) {
BlockFromToEvent event = new BlockFromToEvent(this, result);
this.level.getServer().getPluginManager().callEvent(event);
if (event.isCancelled()) {
return false;
}
this.level.setBlock(this, event.getTo(), true, true);
this.level.setBlock(this, 1, Block.get(BlockID.AIR), true, true);
this.getLevel().addSound(this.add(0.5, 0.5, 0.5), Sound.RANDOM_FIZZ);
return true;
}
protected boolean canFlowInto(Block block) {
if (usesWaterLogging()) {
if (block.canWaterloggingFlowInto()) {
Block blockLayer1 = block.getLevelBlockAtLayer(1);
return !(block instanceof BlockLiquid && ((BlockLiquid) block).getLiquidDepth() == 0) && !(blockLayer1 instanceof BlockLiquid && ((BlockLiquid) blockLayer1).getLiquidDepth() == 0);
}
}
return block.canBeFlowedInto() && !(block instanceof BlockLiquid && ((BlockLiquid) block).getLiquidDepth() == 0);
}
@Override
public Item toItem() {
return new ItemBlock(Block.get(BlockID.AIR));
}
@Override
@PowerNukkitOnly
public boolean breaksWhenMoved() {
return true;
}
@Override
@PowerNukkitOnly
public boolean sticksToPiston() {
return false;
}
@PowerNukkitOnly
@Since("1.4.0.0-PN")
public int getLiquidDepth() {
return getPropertyValue(LIQUID_DEPTH);
}
@PowerNukkitOnly
@Since("1.4.0.0-PN")
public void setLiquidDepth(int liquidDepth) {
setPropertyValue(LIQUID_DEPTH, liquidDepth);
}
@PowerNukkitOnly
@Since("1.4.0.0-PN")
public boolean isSource() {
return getLiquidDepth() == 0;
}
@PowerNukkitOnly
@Since("1.4.0.0-PN")
public int getDepthOnTop() {
int liquidDepth = getLiquidDepth();
if (liquidDepth > 8) {
liquidDepth -= 8;
}
return liquidDepth;
}
@PowerNukkitOnly
@Since("1.4.0.0-PN")
public boolean isFlowingDown() {
return getLiquidDepth() >= 8;
}
@PowerNukkitOnly
@Since("1.4.0.0-PN")
public boolean isSourceOrFlowingDown() {
int liquidDepth = getLiquidDepth();
return liquidDepth == 0 || liquidDepth == 8;
}
@Since("1.4.0.0-PN")
@PowerNukkitOnly
@Override
public int getLightFilter() {
return 2;
}
/**
* 流体对在其中的实体运动造成的阻碍系数，范围(0, 1)，此值越小运动阻力越大。
*
* @return 流体阻碍系数
*/
@PowerNukkitXOnly
@Since("1.6.0.0-PNX")
public float getDrag() {
return 0.5f;
}
@Since("1.6.0.0-PNX")
@Override
public int getWalkThroughExtraCost() {
return 20;
}
}
