Purpur/patches/server/0058-Add-player-death-exp-control-options.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: William Blake Galbreath <blake.galbreath@gmail.com>
Date: Thu, 26 Dec 2019 22:08:37 -0600
Subject: [PATCH] Add player death exp control options


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 265d6b766001cdb8e8b9bc8538119637dd92cd17..2f93121c00c36d389958608cf576af3f1cd7e0ab 100644
--- a/src/main/java/net/minecraft/world/entity/player/Player.java
+++ b/src/main/java/net/minecraft/world/entity/player/Player.java
@@ -1997,9 +1997,18 @@ public abstract class Player extends LivingEntity {
     @Override
     public int getExperienceReward() {
         if (!this.level.getGameRules().getBoolean(GameRules.RULE_KEEPINVENTORY) && !this.isSpectator()) {
-            int i = this.experienceLevel * 7;
-
-            return i > 100 ? 100 : i;
+            // Purpur start
+            int toDrop;
+            try {
+                scriptEngine.eval("expLevel = " + experienceLevel);
+                scriptEngine.eval("expTotal = " + totalExperience);
+                scriptEngine.eval("exp = " + experienceProgress);
+                toDrop = (int) Math.round((Double) scriptEngine.eval(level.purpurConfig.playerDeathExpDropEquation));
+            } catch (Exception ignore) {
+                toDrop = experienceLevel * 7;
+            }
+            return Math.min(toDrop, level.purpurConfig.playerDeathExpDropMax);
+            // Purpur end
         } else {
             return 0;
         }
diff --git a/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java b/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
index b177081ffd734847ea0fe17859036b38e9d72822..9cf7278f13ac13a2cb1451a4dc72878418b7369d 100644
--- a/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
+++ b/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
@@ -176,6 +176,8 @@ public class PurpurWorldConfig {
     public boolean idleTimeoutTargetPlayer = true;
     public int playerSpawnInvulnerableTicks = 60;
     public boolean playerInvulnerableWhileAcceptingResourcePack = false;
+    public String playerDeathExpDropEquation = "expLevel * 7";
+    public int playerDeathExpDropMax = 100;
     private void playerSettings() {
         if (PurpurConfig.version < 19) {
             boolean oldVal = getBoolean("gameplay-mechanics.player.idle-timeout.mods-target", idleTimeoutTargetPlayer);
@@ -189,6 +191,8 @@ public class PurpurWorldConfig {
         idleTimeoutTargetPlayer = getBoolean("gameplay-mechanics.player.idle-timeout.mobs-target", idleTimeoutTargetPlayer);
         playerSpawnInvulnerableTicks = getInt("gameplay-mechanics.player.spawn-invulnerable-ticks", playerSpawnInvulnerableTicks);
         playerInvulnerableWhileAcceptingResourcePack = getBoolean("gameplay-mechanics.player.invulnerable-while-accepting-resource-pack", playerInvulnerableWhileAcceptingResourcePack);
+        playerDeathExpDropEquation = getString("gameplay-mechanics.player.exp-dropped-on-death.equation", playerDeathExpDropEquation);
+        playerDeathExpDropMax = getInt("gameplay-mechanics.player.exp-dropped-on-death.maximum", playerDeathExpDropMax);
     }
 
     public boolean silkTouchEnabled = false;