Paper/Spigot-Server-Patches/0151-Add-ProjectileCollideEvent.patch

From 4628e67615e80fef7ba4ee589dcf418b16014a6e Mon Sep 17 00:00:00 2001
From: Techcable <Techcable@outlook.com>
Date: Fri, 16 Dec 2016 21:25:39 -0600
Subject: [PATCH] Add ProjectileCollideEvent


diff --git a/src/main/java/net/minecraft/server/EntityArrow.java b/src/main/java/net/minecraft/server/EntityArrow.java
index feafb82dd3..6aa518f17f 100644
--- a/src/main/java/net/minecraft/server/EntityArrow.java
+++ b/src/main/java/net/minecraft/server/EntityArrow.java
@@ -194,6 +194,16 @@ public abstract class EntityArrow extends Entity implements IProjectile {
                 }
             }
 
+            // Paper start - Call ProjectileCollideEvent
+            // TODO: flag - noclip - call cancelled?
+            if (movingobjectposition != null && movingobjectposition.entity != null) {
+                com.destroystokyo.paper.event.entity.ProjectileCollideEvent event = org.bukkit.craftbukkit.event.CraftEventFactory.callProjectileCollideEvent(this, movingobjectposition);
+                if (event.isCancelled()) {
+                    movingobjectposition = null;
+                }
+            }
+            // Paper end
+
             if (movingobjectposition != null && !flag) {
                 this.a(movingobjectposition);
                 this.impulse = true;
diff --git a/src/main/java/net/minecraft/server/EntityFireball.java b/src/main/java/net/minecraft/server/EntityFireball.java
index 3e3619d79f..58cc4824cf 100644
--- a/src/main/java/net/minecraft/server/EntityFireball.java
+++ b/src/main/java/net/minecraft/server/EntityFireball.java
@@ -68,6 +68,15 @@ public abstract class EntityFireball extends Entity {
             ++this.f;
             MovingObjectPosition movingobjectposition = ProjectileHelper.a(this, true, this.f >= 25, this.shooter);
 
+            // Paper start - Call ProjectileCollideEvent
+            if (movingobjectposition != null && movingobjectposition.entity != null) {
+                com.destroystokyo.paper.event.entity.ProjectileCollideEvent event = CraftEventFactory.callProjectileCollideEvent(this, movingobjectposition);
+                if (event.isCancelled()) {
+                    movingobjectposition = null;
+                }
+            }
+            // Paper end
+
             if (movingobjectposition != null) {
                 this.a(movingobjectposition);
 
diff --git a/src/main/java/net/minecraft/server/EntityFishingHook.java b/src/main/java/net/minecraft/server/EntityFishingHook.java
index 861fc6fd5c..202b8d2158 100644
--- a/src/main/java/net/minecraft/server/EntityFishingHook.java
+++ b/src/main/java/net/minecraft/server/EntityFishingHook.java
@@ -245,6 +245,16 @@ public class EntityFishingHook extends Entity {
 
         vec3d = new Vec3D(this.locX, this.locY, this.locZ);
         vec3d1 = new Vec3D(this.locX + this.motX, this.locY + this.motY, this.locZ + this.motZ);
+
+        // Paper start - Call ProjectileCollideEvent
+        if (movingobjectposition != null && movingobjectposition.entity != null) {
+            com.destroystokyo.paper.event.entity.ProjectileCollideEvent event = org.bukkit.craftbukkit.event.CraftEventFactory.callProjectileCollideEvent(this, movingobjectposition);
+            if (event.isCancelled()) {
+                movingobjectposition = null;
+            }
+        }
+        // Paper end
+
         if (movingobjectposition != null) {
             vec3d1 = new Vec3D(movingobjectposition.pos.x, movingobjectposition.pos.y, movingobjectposition.pos.z);
         }
diff --git a/src/main/java/net/minecraft/server/EntityProjectile.java b/src/main/java/net/minecraft/server/EntityProjectile.java
index 751ea456b9..bab5b89fe9 100644
--- a/src/main/java/net/minecraft/server/EntityProjectile.java
+++ b/src/main/java/net/minecraft/server/EntityProjectile.java
@@ -144,6 +144,15 @@ public abstract class EntityProjectile extends Entity implements IProjectile {
             movingobjectposition = new MovingObjectPosition(entity);
         }
 
+        // Paper start - Call ProjectileCollideEvent
+        if (movingobjectposition != null && movingobjectposition.entity != null) {
+            com.destroystokyo.paper.event.entity.ProjectileCollideEvent event = org.bukkit.craftbukkit.event.CraftEventFactory.callProjectileCollideEvent(this, movingobjectposition);
+            if (event.isCancelled()) {
+                movingobjectposition = null;
+            }
+        }
+        // Paper end
+
         if (movingobjectposition != null) {
             if (movingobjectposition.type == MovingObjectPosition.EnumMovingObjectType.BLOCK && this.world.getType(movingobjectposition.getBlockPosition()).getBlock() == Blocks.NETHER_PORTAL) {
                 this.e(movingobjectposition.getBlockPosition());
diff --git a/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java b/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
index 3785d4f096..9cbbfed4fe 100644
--- a/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
+++ b/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
@@ -979,6 +979,16 @@ public class CraftEventFactory {
         return CraftItemStack.asNMSCopy(bitem);
     }
 
+    // Paper start
+    public static com.destroystokyo.paper.event.entity.ProjectileCollideEvent callProjectileCollideEvent(Entity entity, MovingObjectPosition position) {
+        Projectile projectile = (Projectile) entity.getBukkitEntity();
+        org.bukkit.entity.Entity collided = position.entity.getBukkitEntity();
+        com.destroystokyo.paper.event.entity.ProjectileCollideEvent event = new com.destroystokyo.paper.event.entity.ProjectileCollideEvent(projectile, collided);
+        Bukkit.getPluginManager().callEvent(event);
+        return event;
+    }
+    // Paper end
+
     public static ProjectileLaunchEvent callProjectileLaunchEvent(Entity entity) {
         Projectile bukkitEntity = (Projectile) entity.getBukkitEntity();
         ProjectileLaunchEvent event = new ProjectileLaunchEvent(bukkitEntity);
-- 
2.21.0