--- a/net/minecraft/world/level/ServerExplosion.java +++ b/net/minecraft/world/level/ServerExplosion.java @@ -35,6 +35,17 @@ import net.minecraft.world.phys.MovingObjectPosition; import net.minecraft.world.phys.Vec3D; +// CraftBukkit start +import net.minecraft.world.entity.boss.EntityComplexPart; +import net.minecraft.world.entity.boss.enderdragon.EntityEnderDragon; +import net.minecraft.world.level.block.Blocks; +import org.bukkit.craftbukkit.event.CraftEventFactory; +import org.bukkit.craftbukkit.util.CraftLocation; +import org.bukkit.event.entity.EntityExplodeEvent; +import org.bukkit.Location; +import org.bukkit.event.block.BlockExplodeEvent; +// CraftBukkit end + public class ServerExplosion implements Explosion { private static final ExplosionDamageCalculator EXPLOSION_DAMAGE_CALCULATOR = new ExplosionDamageCalculator(); @@ -50,16 +61,21 @@ private final DamageSource damageSource; private final ExplosionDamageCalculator damageCalculator; private final Map hitPlayers = new HashMap(); + // CraftBukkit - add field + public boolean wasCanceled = false; + public float yield; + // CraftBukkit end public ServerExplosion(WorldServer worldserver, @Nullable Entity entity, @Nullable DamageSource damagesource, @Nullable ExplosionDamageCalculator explosiondamagecalculator, Vec3D vec3d, float f, boolean flag, Explosion.Effect explosion_effect) { this.level = worldserver; this.source = entity; - this.radius = f; + this.radius = (float) Math.max(f, 0.0); // CraftBukkit - clamp bad values this.center = vec3d; this.fire = flag; this.blockInteraction = explosion_effect; this.damageSource = damagesource == null ? worldserver.damageSources().explosion(this) : damagesource; this.damageCalculator = explosiondamagecalculator == null ? this.makeDamageCalculator(entity) : explosiondamagecalculator; + this.yield = this.blockInteraction == Explosion.Effect.DESTROY_WITH_DECAY ? 1.0F / this.radius : 1.0F; // CraftBukkit } private ExplosionDamageCalculator makeDamageCalculator(@Nullable Entity entity) { @@ -195,7 +211,35 @@ float f2 = !flag && f1 == 0.0F ? 0.0F : getSeenPercent(this.center, entity); if (flag) { - entity.hurtServer(this.level, this.damageSource, this.damageCalculator.getEntityDamageAmount(this, entity, f2)); + // CraftBukkit start + + // Special case ender dragon only give knockback if no damage is cancelled + // Thinks to note: + // - Setting a velocity to a ComplexEntityPart is ignored (and therefore not needed) + // - Damaging ComplexEntityPart while forward the damage to EntityEnderDragon + // - Damaging EntityEnderDragon does nothing + // - EntityEnderDragon hitbock always covers the other parts and is therefore always present + if (entity instanceof EntityComplexPart) { + continue; + } + + entity.lastDamageCancelled = false; + + if (entity instanceof EntityEnderDragon) { + for (EntityComplexPart entityComplexPart : ((EntityEnderDragon) entity).subEntities) { + // Calculate damage separately for each EntityComplexPart + if (list.contains(entityComplexPart)) { + entityComplexPart.hurtServer(this.level, this.damageSource, this.damageCalculator.getEntityDamageAmount(this, entity, f2)); + } + } + } else { + entity.hurtServer(this.level, this.damageSource, this.damageCalculator.getEntityDamageAmount(this, entity, f2)); + } + + if (entity.lastDamageCancelled) { // SPIGOT-5339, SPIGOT-6252, SPIGOT-6777: Skip entity if damage event was cancelled + continue; + } + // CraftBukkit end } double d5 = (1.0D - d0) * (double) f2 * (double) f1; @@ -214,6 +258,17 @@ d3 *= d6; Vec3D vec3d = new Vec3D(d1, d2, d3); + // CraftBukkit start - Call EntityKnockbackEvent + if (entity instanceof EntityLiving) { + Vec3D result = entity.getDeltaMovement().add(vec3d); + org.bukkit.event.entity.EntityKnockbackEvent event = CraftEventFactory.callEntityKnockbackEvent((org.bukkit.craftbukkit.entity.CraftLivingEntity) entity.getBukkitEntity(), source, org.bukkit.event.entity.EntityKnockbackEvent.KnockbackCause.EXPLOSION, d6, vec3d, result.x, result.y, result.z); + + // SPIGOT-7640: Need to subtract entity movement from the event result, + // since the code below (the setDeltaMovement call as well as the hitPlayers map) + // want the vector to be the relative velocity will the event provides the absolute velocity + vec3d = (event.isCancelled()) ? Vec3D.ZERO : new Vec3D(event.getFinalKnockback().getX(), event.getFinalKnockback().getY(), event.getFinalKnockback().getZ()).subtract(entity.getDeltaMovement()); + } + // CraftBukkit end entity.push(vec3d); if (entity instanceof EntityHuman) { EntityHuman entityhuman = (EntityHuman) entity; @@ -235,10 +290,62 @@ List list1 = new ArrayList(); SystemUtils.shuffle(list, this.level.random); + // CraftBukkit start + org.bukkit.World bworld = this.level.getWorld(); + Location location = CraftLocation.toBukkit(this.center, bworld); + + List blockList = new ObjectArrayList<>(); + for (int i1 = list.size() - 1; i1 >= 0; i1--) { + BlockPosition cpos = list.get(i1); + org.bukkit.block.Block bblock = bworld.getBlockAt(cpos.getX(), cpos.getY(), cpos.getZ()); + if (!bblock.getType().isAir()) { + blockList.add(bblock); + } + } + + List bukkitBlocks; + + if (this.source != null) { + EntityExplodeEvent event = CraftEventFactory.callEntityExplodeEvent(this.source, blockList, this.yield, getBlockInteraction()); + this.wasCanceled = event.isCancelled(); + bukkitBlocks = event.blockList(); + this.yield = event.getYield(); + } else { + org.bukkit.block.Block block = location.getBlock(); + org.bukkit.block.BlockState blockState = (damageSource.getDirectBlockState() != null) ? damageSource.getDirectBlockState() : block.getState(); + BlockExplodeEvent event = CraftEventFactory.callBlockExplodeEvent(block, blockState, blockList, this.yield, getBlockInteraction()); + this.wasCanceled = event.isCancelled(); + bukkitBlocks = event.blockList(); + this.yield = event.getYield(); + } + + list.clear(); + + for (org.bukkit.block.Block bblock : bukkitBlocks) { + BlockPosition coords = new BlockPosition(bblock.getX(), bblock.getY(), bblock.getZ()); + list.add(coords); + } + + if (this.wasCanceled) { + return; + } + // CraftBukkit end Iterator iterator = list.iterator(); while (iterator.hasNext()) { BlockPosition blockposition = (BlockPosition) iterator.next(); + // CraftBukkit start - TNTPrimeEvent + IBlockData iblockdata = this.level.getBlockState(blockposition); + Block block = iblockdata.getBlock(); + if (block instanceof net.minecraft.world.level.block.BlockTNT) { + Entity sourceEntity = source == null ? null : source; + BlockPosition sourceBlock = sourceEntity == null ? BlockPosition.containing(this.center) : null; + if (!CraftEventFactory.callTNTPrimeEvent(this.level, blockposition, org.bukkit.event.block.TNTPrimeEvent.PrimeCause.EXPLOSION, sourceEntity, sourceBlock)) { + this.level.sendBlockUpdated(blockposition, Blocks.AIR.defaultBlockState(), iblockdata, 3); // Update the block on the client + continue; + } + } + // CraftBukkit end this.level.getBlockState(blockposition).onExplosionHit(this.level, blockposition, this, (itemstack, blockposition1) -> { addOrAppendStack(list1, itemstack, blockposition1); @@ -262,13 +369,22 @@ BlockPosition blockposition = (BlockPosition) iterator.next(); if (this.level.random.nextInt(3) == 0 && this.level.getBlockState(blockposition).isAir() && this.level.getBlockState(blockposition.below()).isSolidRender()) { - this.level.setBlockAndUpdate(blockposition, BlockFireAbstract.getState(this.level, blockposition)); + // CraftBukkit start - Ignition by explosion + if (!org.bukkit.craftbukkit.event.CraftEventFactory.callBlockIgniteEvent(this.level, blockposition, this).isCancelled()) { + this.level.setBlockAndUpdate(blockposition, BlockFireAbstract.getState(this.level, blockposition)); + } + // CraftBukkit end } } } public void explode() { + // CraftBukkit start + if (this.radius < 0.1F) { + return; + } + // CraftBukkit end this.level.gameEvent(this.source, (Holder) GameEvent.EXPLODE, this.center); List list = this.calculateExplodedPositions(); @@ -288,6 +404,7 @@ } private static void addOrAppendStack(List list, ItemStack itemstack, BlockPosition blockposition) { + if (itemstack.isEmpty()) return; // CraftBukkit - SPIGOT-5425 Iterator iterator = list.iterator(); do {