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path: root/patches/server/0086-Configurable-Player-Collision.patch
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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Wed, 13 Apr 2016 02:10:49 -0400
Subject: [PATCH] Configurable Player Collision


diff --git a/src/main/java/net/minecraft/network/protocol/game/ClientboundSetPlayerTeamPacket.java b/src/main/java/net/minecraft/network/protocol/game/ClientboundSetPlayerTeamPacket.java
index 3d2a689d11bfa230bab61a2a65c6051328f6b78d..cf31771648549ab6d7e4e38b30409ca48a976bea 100644
--- a/src/main/java/net/minecraft/network/protocol/game/ClientboundSetPlayerTeamPacket.java
+++ b/src/main/java/net/minecraft/network/protocol/game/ClientboundSetPlayerTeamPacket.java
@@ -193,7 +193,7 @@ public class ClientboundSetPlayerTeamPacket implements Packet<ClientGamePacketLi
             buf.writeComponent(this.displayName);
             buf.writeByte(this.options);
             buf.writeUtf(this.nametagVisibility);
-            buf.writeUtf(this.collisionRule);
+            buf.writeUtf(!io.papermc.paper.configuration.GlobalConfiguration.get().collisions.enablePlayerCollisions ? "never" : this.collisionRule); // Paper - Configurable player collision
             buf.writeEnum(this.color);
             buf.writeComponent(this.playerPrefix);
             buf.writeComponent(this.playerSuffix);
diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
index 36de11970c3cb605357ec5c49d0654a43263bc00..2ce3a54a63b207940690508a277fae39baa032c3 100644
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
@@ -622,6 +622,20 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
             this.server.getPluginManager().callEvent(new org.bukkit.event.world.WorldLoadEvent(worldserver.getWorld()));
         }
 
+        // Paper start - Configurable player collision; Handle collideRule team for player collision toggle
+        final ServerScoreboard scoreboard = this.getScoreboard();
+        final java.util.Collection<String> toRemove = scoreboard.getPlayerTeams().stream().filter(team -> team.getName().startsWith("collideRule_")).map(net.minecraft.world.scores.PlayerTeam::getName).collect(java.util.stream.Collectors.toList());
+        for (String teamName : toRemove) {
+            scoreboard.removePlayerTeam(scoreboard.getPlayerTeam(teamName)); // Clean up after ourselves
+        }
+
+        if (!io.papermc.paper.configuration.GlobalConfiguration.get().collisions.enablePlayerCollisions) {
+            this.getPlayerList().collideRuleTeamName = org.apache.commons.lang3.StringUtils.left("collideRule_" + java.util.concurrent.ThreadLocalRandom.current().nextInt(), 16);
+            net.minecraft.world.scores.PlayerTeam collideTeam = scoreboard.addPlayerTeam(this.getPlayerList().collideRuleTeamName);
+            collideTeam.setSeeFriendlyInvisibles(false); // Because we want to mimic them not being on a team at all
+        }
+        // Paper end - Configurable player collision
+
         this.server.enablePlugins(org.bukkit.plugin.PluginLoadOrder.POSTWORLD);
         this.server.getPluginManager().callEvent(new ServerLoadEvent(ServerLoadEvent.LoadType.STARTUP));
         this.connection.acceptConnections();
diff --git a/src/main/java/net/minecraft/server/players/PlayerList.java b/src/main/java/net/minecraft/server/players/PlayerList.java
index e870be760f00bac1d5eb32ed6d22c4dc8a8ebf78..a8a0b00a6bcc52a94b99d520915c21cc3155bb06 100644
--- a/src/main/java/net/minecraft/server/players/PlayerList.java
+++ b/src/main/java/net/minecraft/server/players/PlayerList.java
@@ -156,6 +156,7 @@ public abstract class PlayerList {
     // CraftBukkit start
     private CraftServer cserver;
     private final Map<String,ServerPlayer> playersByName = new java.util.HashMap<>();
+    public @Nullable String collideRuleTeamName; // Paper - Configurable player collision
 
     public PlayerList(MinecraftServer server, LayeredRegistryAccess<RegistryLayer> registryManager, PlayerDataStorage saveHandler, int maxPlayers) {
         this.cserver = server.server = new CraftServer((DedicatedServer) server, this);
@@ -398,6 +399,13 @@ public abstract class PlayerList {
 
         player.initInventoryMenu();
         // CraftBukkit - Moved from above, added world
+        // Paper start - Configurable player collision; Add to collideRule team if needed
+        final net.minecraft.world.scores.Scoreboard scoreboard = this.getServer().getLevel(Level.OVERWORLD).getScoreboard();
+        final PlayerTeam collideRuleTeam = scoreboard.getPlayerTeam(this.collideRuleTeamName);
+        if (this.collideRuleTeamName != null && collideRuleTeam != null && player.getTeam() == null) {
+            scoreboard.addPlayerToTeam(player.getScoreboardName(), collideRuleTeam);
+        }
+        // Paper end - Configurable player collision
         PlayerList.LOGGER.info("{}[{}] logged in with entity id {} at ([{}]{}, {}, {})", player.getName().getString(), s1, player.getId(), worldserver1.serverLevelData.getLevelName(), player.getX(), player.getY(), player.getZ());
     }
 
@@ -521,6 +529,16 @@ public abstract class PlayerList {
         entityplayer.doTick(); // SPIGOT-924
         // CraftBukkit end
 
+        // Paper start - Configurable player collision; Remove from collideRule team if needed
+        if (this.collideRuleTeamName != null) {
+            final net.minecraft.world.scores.Scoreboard scoreBoard = this.server.getLevel(Level.OVERWORLD).getScoreboard();
+            final PlayerTeam team = scoreBoard.getPlayersTeam(this.collideRuleTeamName);
+            if (entityplayer.getTeam() == team && team != null) {
+                scoreBoard.removePlayerFromTeam(entityplayer.getScoreboardName(), team);
+            }
+        }
+        // Paper end - Configurable player collision
+
         this.save(entityplayer);
         if (entityplayer.isPassenger()) {
             Entity entity = entityplayer.getRootVehicle();
@@ -1161,6 +1179,13 @@ public abstract class PlayerList {
         }
         // CraftBukkit end
 
+        // Paper start - Configurable player collision; Remove collideRule team if it exists
+        if (this.collideRuleTeamName != null) {
+            final net.minecraft.world.scores.Scoreboard scoreboard = this.getServer().getLevel(Level.OVERWORLD).getScoreboard();
+            final PlayerTeam team = scoreboard.getPlayersTeam(this.collideRuleTeamName);
+            if (team != null) scoreboard.removePlayerTeam(team);
+        }
+        // Paper end - Configurable player collision
     }
 
     // CraftBukkit start