From 03168769b95746b5251f8dd6d0896814d630a1f3 Mon Sep 17 00:00:00 2001
From: Mariell Hoversholm <proximyst@proximyst.com>
Date: Sat, 14 Nov 2020 16:49:03 +0100
Subject: [PATCH] Collision option for requiring a player participant

Closes #614.
---
 ...n-for-requiring-a-player-participant.patch | 65 +++++++++++++++++++
 1 file changed, 65 insertions(+)
 create mode 100644 Spigot-Server-Patches/Collision-option-for-requiring-a-player-participant.patch

diff --git a/Spigot-Server-Patches/Collision-option-for-requiring-a-player-participant.patch b/Spigot-Server-Patches/Collision-option-for-requiring-a-player-participant.patch
new file mode 100644
index 0000000000..779d07f6d2
--- /dev/null
+++ b/Spigot-Server-Patches/Collision-option-for-requiring-a-player-participant.patch
@@ -0,0 +1,65 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Mariell Hoversholm <proximyst@proximyst.com>
+Date: Sat, 14 Nov 2020 16:48:37 +0100
+Subject: [PATCH] Collision option for requiring a player participant
+
+
+diff --git a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
+index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
+--- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
++++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
+@@ -0,0 +0,0 @@ public class PaperWorldConfig {
+         }
+     }
+ 
++    public boolean onlyPlayersCollide = false;
++    public boolean allowVehicleCollisions = true;
++    private void onlyPlayersCollide() {
++        onlyPlayersCollide = getBoolean("only-players-collide", onlyPlayersCollide);
++        allowVehicleCollisions = getBoolean("allow-vehicle-collisions", allowVehicleCollisions);
++        if (onlyPlayersCollide && !allowVehicleCollisions) {
++            log("Collisions will only work if a player is one of the two entities colliding.");
++        } else if (onlyPlayersCollide) {
++            log("Collisions will only work if a player OR a vehicle is one of the two entities colliding.");
++        }
++    }
++
+     public int wanderingTraderSpawnMinuteTicks = 1200;
+     public int wanderingTraderSpawnDayTicks = 24000;
+     public int wanderingTraderSpawnChanceFailureIncrement = 25;
+diff --git a/src/main/java/net/minecraft/server/Entity.java b/src/main/java/net/minecraft/server/Entity.java
+index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
+--- a/src/main/java/net/minecraft/server/Entity.java
++++ b/src/main/java/net/minecraft/server/Entity.java
+@@ -0,0 +0,0 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, Ke
+     public void collide(Entity entity) {
+         if (!this.isSameVehicle(entity)) {
+             if (!entity.noclip && !this.noclip) {
++                if (this.world.paperConfig.onlyPlayersCollide && !(entity instanceof EntityPlayer || this instanceof EntityPlayer)) return; // Paper
+                 double d0 = entity.locX() - this.locX();
+                 double d1 = entity.locZ() - this.locZ();
+                 double d2 = MathHelper.a(d0, d1);
+diff --git a/src/main/java/net/minecraft/server/EntityBoat.java b/src/main/java/net/minecraft/server/EntityBoat.java
+index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
+--- a/src/main/java/net/minecraft/server/EntityBoat.java
++++ b/src/main/java/net/minecraft/server/EntityBoat.java
+@@ -0,0 +0,0 @@ public class EntityBoat extends Entity {
+ 
+     @Override
+     public void collide(Entity entity) {
++        if (!this.world.paperConfig.allowVehicleCollisions && this.world.paperConfig.onlyPlayersCollide && !(entity instanceof EntityPlayer)) return; // Paper
+         if (entity instanceof EntityBoat) {
+             if (entity.getBoundingBox().minY < this.getBoundingBox().maxY) {
+                 // CraftBukkit start
+diff --git a/src/main/java/net/minecraft/server/EntityMinecartAbstract.java b/src/main/java/net/minecraft/server/EntityMinecartAbstract.java
+index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
+--- a/src/main/java/net/minecraft/server/EntityMinecartAbstract.java
++++ b/src/main/java/net/minecraft/server/EntityMinecartAbstract.java
+@@ -0,0 +0,0 @@ public abstract class EntityMinecartAbstract extends Entity {
+     public void collide(Entity entity) {
+         if (!this.world.isClientSide) {
+             if (!entity.noclip && !this.noclip) {
++                if (!this.world.paperConfig.allowVehicleCollisions && this.world.paperConfig.onlyPlayersCollide && !(entity instanceof EntityPlayer)) return; // Paper
+                 if (!this.w(entity)) {
+                     // CraftBukkit start
+                     VehicleEntityCollisionEvent collisionEvent = new VehicleEntityCollisionEvent((Vehicle) this.getBukkitEntity(), entity.getBukkitEntity());