PaperMC/patches/server/0581-Add-critical-damage-API.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: dodison <kacpik@mapik.eu>
Date: Mon, 26 Jul 2021 17:32:36 +0200
Subject: [PATCH] Add critical damage API


diff --git a/src/main/java/net/minecraft/world/damagesource/DamageSource.java b/src/main/java/net/minecraft/world/damagesource/DamageSource.java
index c1d121d83591ca1b5bf9d9406c9622b4f24eafef..aee26dd78953ff43306aaa64161f5b9edcdd4b83 100644
--- a/src/main/java/net/minecraft/world/damagesource/DamageSource.java
+++ b/src/main/java/net/minecraft/world/damagesource/DamageSource.java
@@ -276,4 +276,18 @@ public class DamageSource {
     public Holder<DamageType> typeHolder() {
         return this.type;
     }
+
+    // Paper start - add critical damage API
+    private boolean critical;
+    public boolean isCritical() {
+        return this.critical;
+    }
+    public DamageSource critical() {
+        return this.critical(true);
+    }
+    public DamageSource critical(boolean critical) {
+        this.critical = critical;
+        return this;
+    }
+    // Paper end - add critical damage API
 }
diff --git a/src/main/java/net/minecraft/world/entity/player/Player.java b/src/main/java/net/minecraft/world/entity/player/Player.java
index 13f21822d0eb1d167b9b71addb46c4f508301c8d..4e33c6c612939e6970d5984825115768ebb6a5ea 100644
--- a/src/main/java/net/minecraft/world/entity/player/Player.java
+++ b/src/main/java/net/minecraft/world/entity/player/Player.java
@@ -1261,6 +1261,7 @@ public abstract class Player extends LivingEntity {
 
                     flag2 = flag2 && !this.level().paperConfig().entities.behavior.disablePlayerCrits; // Paper - Toggleable player crits
                     if (flag2) {
+                        damagesource = damagesource.critical(true); // Paper start - critical damage API
                         f *= 1.5F;
                     }
 
@@ -1320,7 +1321,7 @@ public abstract class Player extends LivingEntity {
                                     float f7 = this.getEnchantedDamage(entityliving2, f6, damagesource) * f2;
 
                                     // CraftBukkit start - Only apply knockback if the damage hits
-                                    if (!entityliving2.hurtServer((ServerLevel) this.level(), this.damageSources().playerAttack(this).sweep(), f7)) {
+                                    if (!entityliving2.hurtServer((ServerLevel) this.level(), this.damageSources().playerAttack(this).sweep().critical(flag2), f7)) { // Paper - add critical damage API
                                         continue;
                                     }
                                     // CraftBukkit end
diff --git a/src/main/java/net/minecraft/world/entity/projectile/AbstractArrow.java b/src/main/java/net/minecraft/world/entity/projectile/AbstractArrow.java
index 52765e1b9f5a026e7108ff5a7d97681cdb2870e9..aab7d546317d93876ccd0e02c0631ccc7c8f9bf5 100644
--- a/src/main/java/net/minecraft/world/entity/projectile/AbstractArrow.java
+++ b/src/main/java/net/minecraft/world/entity/projectile/AbstractArrow.java
@@ -465,6 +465,7 @@ public abstract class AbstractArrow extends Projectile {
             entityliving.setLastHurtMob(entity);
         }
 
+        if (this.isCritArrow()) damagesource = damagesource.critical(); // Paper - add critical damage API
         boolean flag = entity.getType() == EntityType.ENDERMAN;
         int k = entity.getRemainingFireTicks();
 
diff --git a/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java b/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
index 24f86724012bb8bcd6d24683a1c78ce66b42ca30..a5285a8952b2d99bfbb928b1bb31d3ddcf8ed57b 100644
--- a/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
+++ b/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
@@ -1078,7 +1078,7 @@ public class CraftEventFactory {
                 return CraftEventFactory.callEntityDamageEvent(source.getDirectBlock(), source.getDirectBlockState(), entity, DamageCause.BLOCK_EXPLOSION, bukkitDamageSource, modifiers, modifierFunctions, cancelled);
             }
             DamageCause damageCause = (damager.getBukkitEntity() instanceof org.bukkit.entity.TNTPrimed) ? DamageCause.BLOCK_EXPLOSION : DamageCause.ENTITY_EXPLOSION;
-            return CraftEventFactory.callEntityDamageEvent(damager, entity, damageCause, bukkitDamageSource, modifiers, modifierFunctions, cancelled);
+            return CraftEventFactory.callEntityDamageEvent(damager, entity, damageCause, bukkitDamageSource, modifiers, modifierFunctions, cancelled, source.isCritical()); // Paper - add critical damage API
         } else if (damager != null || source.getDirectEntity() != null) {
             DamageCause cause = (source.isSweep()) ? DamageCause.ENTITY_SWEEP_ATTACK : DamageCause.ENTITY_ATTACK;
 
@@ -1104,7 +1104,7 @@ public class CraftEventFactory {
                 cause = DamageCause.MAGIC;
             }
 
-            return CraftEventFactory.callEntityDamageEvent(damager, entity, cause, bukkitDamageSource, modifiers, modifierFunctions, cancelled);
+            return CraftEventFactory.callEntityDamageEvent(damager, entity, cause, bukkitDamageSource, modifiers, modifierFunctions, cancelled, source.isCritical()); // Paper - add critical damage API
         } else if (source.is(DamageTypes.FELL_OUT_OF_WORLD)) {
             return CraftEventFactory.callEntityDamageEvent(source.getDirectBlock(), source.getDirectBlockState(), entity, DamageCause.VOID, bukkitDamageSource, modifiers, modifierFunctions, cancelled);
         } else if (source.is(DamageTypes.LAVA)) {
@@ -1164,13 +1164,13 @@ public class CraftEventFactory {
             cause = DamageCause.CUSTOM;
         }
 
-        return CraftEventFactory.callEntityDamageEvent((Entity) null, entity, cause, bukkitDamageSource, modifiers, modifierFunctions, cancelled);
+        return CraftEventFactory.callEntityDamageEvent((Entity) null, entity, cause, bukkitDamageSource, modifiers, modifierFunctions, cancelled, source.isCritical()); // Paper - add critical damage API
     }
 
-    private static EntityDamageEvent callEntityDamageEvent(Entity damager, Entity damagee, DamageCause cause, org.bukkit.damage.DamageSource bukkitDamageSource, Map<DamageModifier, Double> modifiers, Map<DamageModifier, Function<? super Double, Double>> modifierFunctions, boolean cancelled) {
+    private static EntityDamageEvent callEntityDamageEvent(Entity damager, Entity damagee, DamageCause cause, org.bukkit.damage.DamageSource bukkitDamageSource, Map<DamageModifier, Double> modifiers, Map<DamageModifier, Function<? super Double, Double>> modifierFunctions, boolean cancelled, boolean critical) { // Paper - add critical damage API
         EntityDamageEvent event;
         if (damager != null) {
-            event = new EntityDamageByEntityEvent(damager.getBukkitEntity(), damagee.getBukkitEntity(), cause, bukkitDamageSource, modifiers, modifierFunctions);
+            event = new EntityDamageByEntityEvent(damager.getBukkitEntity(), damagee.getBukkitEntity(), cause, bukkitDamageSource, modifiers, modifierFunctions, critical);
         } else {
             event = new EntityDamageEvent(damagee.getBukkitEntity(), cause, bukkitDamageSource, modifiers, modifierFunctions);
         }