Paper/nms-patches/EntityHuman.patch

--- a/net/minecraft/server/EntityHuman.java
+++ b/net/minecraft/server/EntityHuman.java
@@ -9,6 +9,18 @@
 import java.util.UUID;
 import javax.annotation.Nullable;
 
+// CraftBukkit start
+import org.bukkit.craftbukkit.entity.CraftHumanEntity;
+import org.bukkit.craftbukkit.entity.CraftItem;
+import org.bukkit.entity.Player;
+import org.bukkit.event.entity.EntityCombustByEntityEvent;
+import org.bukkit.event.player.PlayerBedEnterEvent;
+import org.bukkit.event.player.PlayerBedLeaveEvent;
+import org.bukkit.event.player.PlayerDropItemEvent;
+import org.bukkit.event.player.PlayerVelocityEvent;
+import org.bukkit.util.Vector;
+// CraftBukkit end
+
 public abstract class EntityHuman extends EntityLiving {
 
     private static final DataWatcherObject<Float> a = DataWatcher.a(EntityHuman.class, DataWatcherRegistry.c);
@@ -16,10 +28,10 @@
     protected static final DataWatcherObject<Byte> bq = DataWatcher.a(EntityHuman.class, DataWatcherRegistry.a);
     protected static final DataWatcherObject<Byte> br = DataWatcher.a(EntityHuman.class, DataWatcherRegistry.a);
     public PlayerInventory inventory = new PlayerInventory(this);
-    private InventoryEnderChest enderChest = new InventoryEnderChest();
+    private InventoryEnderChest enderChest = new InventoryEnderChest(this); // CraftBukkit - add "this" to constructor
     public Container defaultContainer;
     public Container activeContainer;
-    protected FoodMetaData foodData = new FoodMetaData();
+    protected FoodMetaData foodData = new FoodMetaData(this); // CraftBukkit - add "this" to constructor
     protected int bw;
     public float bx;
     public float by;
@@ -52,6 +64,17 @@
     @Nullable
     public EntityFishingHook hookedFish;
 
+    // CraftBukkit start
+    public boolean fauxSleeping;
+    public String spawnWorld = "";
+    public int oldLevel = -1;
+
+    @Override
+    public CraftHumanEntity getBukkitEntity() {
+        return (CraftHumanEntity) super.getBukkitEntity();
+    }
+    // CraftBukkit end
+
     protected ItemCooldown l() {
         return new ItemCooldown();
     }
@@ -312,7 +335,8 @@
 
         if (this.world.getDifficulty() == EnumDifficulty.PEACEFUL && this.world.getGameRules().getBoolean("naturalRegeneration")) {
             if (this.getHealth() < this.getMaxHealth() && this.ticksLived % 20 == 0) {
-                this.heal(1.0F);
+                // CraftBukkit - added regain reason of "REGEN" for filtering purposes.
+                this.heal(1.0F, org.bukkit.event.entity.EntityRegainHealthEvent.RegainReason.REGEN);
             }
 
             if (this.foodData.c() && this.ticksLived % 10 == 0) {
@@ -336,7 +360,7 @@
 
         this.l((float) attributeinstance.getValue());
         float f = MathHelper.sqrt(this.motX * this.motX + this.motZ * this.motZ);
-        float f1 = (float) (Math.atan(-this.motY * 0.20000000298023224D) * 15.0D);
+        float f1 = (float) ( org.bukkit.craftbukkit.TrigMath.atan(-this.motY * 0.20000000298023224D) * 15.0D); // CraftBukkit
 
         if (f > 0.1F) {
             f = 0.1F;
@@ -442,28 +466,34 @@
     public void b(Entity entity, int i) {
         if (entity != this) {
             this.addScore(i);
-            Collection collection = this.getScoreboard().getObjectivesForCriteria(IScoreboardCriteria.f);
+            // CraftBukkit - Get our scores instead
+            Collection<ScoreboardScore> collection = this.world.getServer().getScoreboardManager().getScoreboardScores(IScoreboardCriteria.f, this.getName(), new java.util.ArrayList<ScoreboardScore>());
 
             if (entity instanceof EntityHuman) {
                 this.b(StatisticList.D);
-                collection.addAll(this.getScoreboard().getObjectivesForCriteria(IScoreboardCriteria.e));
+                // CraftBukkit - Get our scores instead
+                this.world.getServer().getScoreboardManager().getScoreboardScores(IScoreboardCriteria.e, this.getName(), collection);
+                // collection.addAll(this.getScoreboard().getObjectivesForCriteria(IScoreboardCriteria.e));
+                // CraftBukkit end
             } else {
                 this.b(StatisticList.B);
             }
 
             collection.addAll(this.d(entity));
-            Iterator iterator = collection.iterator();
+            Iterator<ScoreboardScore> iterator = collection.iterator();
 
             while (iterator.hasNext()) {
-                ScoreboardObjective scoreboardobjective = (ScoreboardObjective) iterator.next();
+                // CraftBukkit start
+                // ScoreboardObjective scoreboardobjective = (ScoreboardObjective) iterator.next();
 
-                this.getScoreboard().getPlayerScoreForObjective(this.getName(), scoreboardobjective).incrementScore();
+                iterator.next().incrementScore();
+                // CraftBukkit end
             }
 
         }
     }
 
-    private Collection<ScoreboardObjective> d(Entity entity) {
+    private Collection<ScoreboardScore> d(Entity entity) { // CraftBukkit
         String s = entity instanceof EntityHuman ? entity.getName() : entity.bf();
         ScoreboardTeam scoreboardteam = this.getScoreboard().getPlayerTeam(this.getName());
 
@@ -488,7 +518,10 @@
             int j = scoreboardteam1.m().b();
 
             if (j >= 0 && j < IScoreboardCriteria.m.length) {
-                return this.getScoreboard().getObjectivesForCriteria(IScoreboardCriteria.m[j]);
+                // CraftBukkit - Get our scores instead
+                return this.world.getServer().getScoreboardManager().getScoreboardScores(IScoreboardCriteria.m[j], this.getName(), new java.util.ArrayList<ScoreboardScore>());
+                // return this.getScoreboard().getObjectivesForCriteria(IScoreboardCriteria.m[j]);
+                // CraftBukkit end
             }
         }
 
@@ -497,6 +530,7 @@
 
     @Nullable
     public EntityItem a(boolean flag) {
+        // Called only when dropped by Q or CTRL-Q
         return this.a(this.inventory.splitStack(this.inventory.itemInHandIndex, flag && !this.inventory.getItemInHand().isEmpty() ? this.inventory.getItemInHand().getCount() : 1), false, true);
     }
 
@@ -539,6 +573,30 @@
                 entityitem.motZ += Math.sin((double) f1) * (double) f;
             }
 
+            // CraftBukkit start - fire PlayerDropItemEvent
+            Player player = (Player) this.getBukkitEntity();
+            CraftItem drop = new CraftItem(this.world.getServer(), entityitem);
+
+            PlayerDropItemEvent event = new PlayerDropItemEvent(player, drop);
+            this.world.getServer().getPluginManager().callEvent(event);
+
+            if (event.isCancelled()) {
+                org.bukkit.inventory.ItemStack cur = player.getInventory().getItemInHand();
+                if (flag1 && (cur == null || cur.getAmount() == 0)) {
+                    // The complete stack was dropped
+                    player.getInventory().setItemInHand(drop.getItemStack());
+                } else if (flag1 && cur.isSimilar(drop.getItemStack()) && drop.getItemStack().getAmount() == 1) {
+                    // Only one item is dropped
+                    cur.setAmount(cur.getAmount() + 1);
+                    player.getInventory().setItemInHand(cur);
+                } else {
+                    // Fallback
+                    player.getInventory().addItem(drop.getItemStack());
+                }
+                return null;
+            }
+            // CraftBukkit end
+
             ItemStack itemstack1 = this.a(entityitem);
 
             if (flag1) {
@@ -646,6 +704,13 @@
             this.a(true, true, false);
         }
 
+        // CraftBukkit start
+        this.spawnWorld = nbttagcompound.getString("SpawnWorld");
+        if ("".equals(spawnWorld)) {
+            this.spawnWorld = this.world.getServer().getWorlds().get(0).getName();
+        }
+        // CraftBukkit end
+
         if (nbttagcompound.hasKeyOfType("SpawnX", 99) && nbttagcompound.hasKeyOfType("SpawnY", 99) && nbttagcompound.hasKeyOfType("SpawnZ", 99)) {
             this.e = new BlockPosition(nbttagcompound.getInt("SpawnX"), nbttagcompound.getInt("SpawnY"), nbttagcompound.getInt("SpawnZ"));
             this.f = nbttagcompound.getBoolean("SpawnForced");
@@ -683,6 +748,7 @@
         this.foodData.b(nbttagcompound);
         this.abilities.a(nbttagcompound);
         nbttagcompound.set("EnderItems", this.enderChest.i());
+        nbttagcompound.setString("SpawnWorld", spawnWorld); // CraftBukkit - fixes bed spawns for multiworld worlds
     }
 
     public boolean damageEntity(DamageSource damagesource, float f) {
@@ -701,7 +767,7 @@
 
                 if (damagesource.r()) {
                     if (this.world.getDifficulty() == EnumDifficulty.PEACEFUL) {
-                        f = 0.0F;
+                        return false; // CraftBukkit - f = 0.0f -> return false
                     }
 
                     if (this.world.getDifficulty() == EnumDifficulty.EASY) {
@@ -713,7 +779,7 @@
                     }
                 }
 
-                return f == 0.0F ? false : super.damageEntity(damagesource, f);
+                return super.damageEntity(damagesource, f); // CraftBukkit - Don't filter out 0 damage
             }
         }
     }
@@ -727,10 +793,29 @@
     }
 
     public boolean a(EntityHuman entityhuman) {
-        ScoreboardTeamBase scoreboardteambase = this.aQ();
-        ScoreboardTeamBase scoreboardteambase1 = entityhuman.aQ();
+        // CraftBukkit start - Change to check OTHER player's scoreboard team according to API
+        // To summarize this method's logic, it's "Can parameter hurt this"
+        org.bukkit.scoreboard.Team team;
+        if (entityhuman instanceof EntityPlayer) {
+            EntityPlayer thatPlayer = (EntityPlayer) entityhuman;
+            team = thatPlayer.getBukkitEntity().getScoreboard().getPlayerTeam(thatPlayer.getBukkitEntity());
+            if (team == null || team.allowFriendlyFire()) {
+                return true;
+            }
+        } else {
+            // This should never be called, but is implemented anyway
+            org.bukkit.OfflinePlayer thisPlayer = entityhuman.world.getServer().getOfflinePlayer(entityhuman.getName());
+            team = entityhuman.world.getServer().getScoreboardManager().getMainScoreboard().getPlayerTeam(thisPlayer);
+            if (team == null || team.allowFriendlyFire()) {
+                return true;
+            }
+        }
 
-        return scoreboardteambase == null ? true : (!scoreboardteambase.isAlly(scoreboardteambase1) ? true : scoreboardteambase.allowFriendlyFire());
+        if (this instanceof EntityPlayer) {
+            return !team.hasPlayer(((EntityPlayer) this).getBukkitEntity());
+        }
+        return !team.hasPlayer(this.world.getServer().getOfflinePlayer(this.getName()));
+        // CraftBukkit end
     }
 
     protected void damageArmor(float f) {
@@ -773,7 +858,12 @@
         return (float) i / (float) this.inventory.armor.size();
     }
 
-    protected void damageEntity0(DamageSource damagesource, float f) {
+    // CraftBukkit start
+    protected boolean damageEntity0(DamageSource damagesource, float f) { // void -> boolean
+        if (true) {
+            return super.damageEntity0(damagesource, f);
+        }
+        // CraftBukkit end
         if (!this.isInvulnerable(damagesource)) {
             f = this.applyArmorModifier(damagesource, f);
             f = this.applyMagicModifier(damagesource, f);
@@ -793,6 +883,7 @@
 
             }
         }
+        return false; // CraftBukkit
     }
 
     public void openSign(TileEntitySign tileentitysign) {}
@@ -914,8 +1005,15 @@
                     if (entity instanceof EntityLiving) {
                         f3 = ((EntityLiving) entity).getHealth();
                         if (j > 0 && !entity.isBurning()) {
-                            flag4 = true;
-                            entity.setOnFire(1);
+                            // CraftBukkit start - Call a combust event when somebody hits with a fire enchanted item
+                            EntityCombustByEntityEvent combustEvent = new EntityCombustByEntityEvent(this.getBukkitEntity(), entity.getBukkitEntity(), 1);
+                            org.bukkit.Bukkit.getPluginManager().callEvent(combustEvent);
+
+                            if (!combustEvent.isCancelled()) {
+                                flag4 = true;
+                                entity.setOnFire(combustEvent.getDuration());
+                            }
+                            // CraftBukkit end
                         }
                     }
 
@@ -945,8 +1043,11 @@
                                 EntityLiving entityliving = (EntityLiving) iterator.next();
 
                                 if (entityliving != this && entityliving != entity && !this.r(entityliving) && this.h(entityliving) < 9.0D) {
+                                    // CraftBukkit start - Only apply knockback if the damage hits
+                                    if (entityliving.damageEntity(DamageSource.playerAttack(this), 1.0F)) {
                                     entityliving.a(this, 0.4F, (double) MathHelper.sin(this.yaw * 0.017453292F), (double) (-MathHelper.cos(this.yaw * 0.017453292F)));
-                                    entityliving.damageEntity(DamageSource.playerAttack(this), 1.0F);
+                                    }
+                                    // CraftBukkit end
                                 }
                             }
 
@@ -955,11 +1056,28 @@
                         }
 
                         if (entity instanceof EntityPlayer && entity.velocityChanged) {
+                            // CraftBukkit start - Add Velocity Event
+                            boolean cancelled = false;
+                            Player player = (Player) entity.getBukkitEntity();
+                            org.bukkit.util.Vector velocity = new Vector( d1, d2, d3 );
+
+                            PlayerVelocityEvent event = new PlayerVelocityEvent(player, velocity.clone());
+                            world.getServer().getPluginManager().callEvent(event);
+
+                            if (event.isCancelled()) {
+                                cancelled = true;
+                            } else if (!velocity.equals(event.getVelocity())) {
+                                player.setVelocity(event.getVelocity());
+                            }
+
+                            if (!cancelled) {
                             ((EntityPlayer) entity).playerConnection.sendPacket(new PacketPlayOutEntityVelocity(entity));
                             entity.velocityChanged = false;
                             entity.motX = d1;
                             entity.motY = d2;
                             entity.motZ = d3;
+                            }
+                            // CraftBukkit end
                         }
 
                         if (flag2) {
@@ -1012,7 +1130,14 @@
 
                             this.a(StatisticList.y, Math.round(f4 * 10.0F));
                             if (j > 0) {
-                                entity.setOnFire(j * 4);
+                                // CraftBukkit start - Call a combust event when somebody hits with a fire enchanted item
+                                EntityCombustByEntityEvent combustEvent = new EntityCombustByEntityEvent(this.getBukkitEntity(), entity.getBukkitEntity(), j * 4);
+                                org.bukkit.Bukkit.getPluginManager().callEvent(combustEvent);
+
+                                if (!combustEvent.isCancelled()) {
+                                    entity.setOnFire(combustEvent.getDuration());
+                                }
+                                // CraftBukkit end
                             }
 
                             if (this.world instanceof WorldServer && f4 > 2.0F) {
@@ -1028,6 +1153,11 @@
                         if (flag4) {
                             entity.extinguish();
                         }
+                        // CraftBukkit start - resync on cancelled event
+                        if (this instanceof EntityPlayer) {
+                            ((EntityPlayer) this).getBukkitEntity().updateInventory();
+                        }
+                        // CraftBukkit end
                     }
                 }
 
@@ -1118,6 +1248,20 @@
             this.stopRiding();
         }
 
+        // CraftBukkit start - fire PlayerBedEnterEvent
+        if (this.getBukkitEntity() instanceof Player) {
+            Player player = (Player) this.getBukkitEntity();
+            org.bukkit.block.Block bed = this.world.getWorld().getBlockAt(blockposition.getX(), blockposition.getY(), blockposition.getZ());
+
+            PlayerBedEnterEvent event = new PlayerBedEnterEvent(player, bed);
+            this.world.getServer().getPluginManager().callEvent(event);
+
+            if (event.isCancelled()) {
+                return EnumBedResult.OTHER_PROBLEM;
+            }
+        }
+        // CraftBukkit end
+
         this.setSize(0.2F, 0.2F);
         if (this.world.isLoaded(blockposition)) {
             float f = 0.5F + (float) enumdirection.getAdjacentX() * 0.4F;
@@ -1177,6 +1321,23 @@
             this.world.everyoneSleeping();
         }
 
+        // CraftBukkit start - fire PlayerBedLeaveEvent
+        if (this.getBukkitEntity() instanceof Player) {
+            Player player = (Player) this.getBukkitEntity();
+
+            org.bukkit.block.Block bed;
+            BlockPosition blockposition = this.bedPosition;
+            if (blockposition != null) {
+                bed = this.world.getWorld().getBlockAt(blockposition.getX(), blockposition.getY(), blockposition.getZ());
+            } else {
+                bed = this.world.getWorld().getBlockAt(player.getLocation());
+            }
+
+            PlayerBedLeaveEvent event = new PlayerBedLeaveEvent(player, bed);
+            this.world.getServer().getPluginManager().callEvent(event);
+        }
+        // CraftBukkit end
+
         this.sleepTicks = flag ? 0 : 100;
         if (flag2) {
             this.setRespawnPosition(this.bedPosition, false);
@@ -1228,9 +1389,11 @@
         if (blockposition != null) {
             this.e = blockposition;
             this.f = flag;
+            this.spawnWorld = this.world.worldData.getName(); // CraftBukkit
         } else {
             this.e = null;
             this.f = false;
+            this.spawnWorld = ""; // CraftBukkit
         }
 
     }