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Paper/Spigot-Server-Patches/0266-Configurable-Alternative-LootPool-Luck-Formula.patch
Shane Freeder ea855e2b46 Updated Upstream (Bukkit/CraftBukkit/Spigot)
Upstream has released updates that appears to apply and compile correctly.
This update has not been tested by PaperMC and as with ANY update, please do your own testing

Developers!: You will need to clean up your work/Minecraft/1.13.2 folder
for this

Also, restore a patch that was dropped in the last upstream

Bukkit Changes:
279eeab3 Fix command description not being set
96e2bb18 Remove debug print from SyntheticEventTest

CraftBukkit Changes:
d3ed1516 Fix dangerously threaded beacons
217a293d Don't relocate joptsimple to allow --help to work.
1be05a21 Prepare for imminent Java 12 release
a49270b2 Mappings Update
5259d80c SPIGOT-4669: Fix PlayerTeleportEvent coordinates for relative teleports

Spigot Changes:
e6eb36f2 Rebuild patches
2019-03-20 01:55:16 +00:00

109 Zeilen
4.5 KiB
Diff

From 0153d967248e1a2b8ea247d88c9a52446197fa38 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Fri, 15 Jun 2018 00:30:32 -0400
Subject: [PATCH] Configurable Alternative LootPool Luck Formula
Rewrites the Vanilla luck application formula so that luck can be
applied to items that do not have any quality defined.
See: https://luckformula.emc.gs for data and details
-----------
The rough summary is:
My goal was that in a pool, when luck was applied, the pool
rebalances so the percentages for bigger items is
lowered and smaller items is boosted.
Do this by boosting and then reducing the weight value,
so that larger numbers are penalized more than smaller numbers.
resulting in a larger reduction of entries for more common
items than the reduction on small weights,
giving smaller weights more of a chance
-----------
This work kind of obsoletes quality, but quality would be useful
for 2 items with same weight that you want luck to impact
in varying directions.
Fishing still falls into that as the weights are closer, so luck
will invalidate junk more.
This change will result in some major changes to fishing formulas.
-----------
I would love to see this change in Vanilla, so Mojang please pull :)
diff --git a/src/main/java/com/destroystokyo/paper/PaperConfig.java b/src/main/java/com/destroystokyo/paper/PaperConfig.java
index 3d924fd80..361b3c9e9 100644
--- a/src/main/java/com/destroystokyo/paper/PaperConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperConfig.java
@@ -300,4 +300,12 @@ public class PaperConfig {
"such as inventories, experience points, advancements and the like will not be saved when they log out.");
}
}
+
+ public static boolean useAlternativeLuckFormula = false;
+ private static void useAlternativeLuckFormula() {
+ useAlternativeLuckFormula = getBoolean("settings.use-alternative-luck-formula", false);
+ if (useAlternativeLuckFormula) {
+ Bukkit.getLogger().log(Level.INFO, "Using Aikar's Alternative Luck Formula to apply Luck attribute to all loot pool calculations. See https://luckformula.emc.gs");
+ }
+ }
}
diff --git a/src/main/java/net/minecraft/server/LootSelectorEntry.java b/src/main/java/net/minecraft/server/LootSelectorEntry.java
index 3e313bba7..80f9f9a25 100644
--- a/src/main/java/net/minecraft/server/LootSelectorEntry.java
+++ b/src/main/java/net/minecraft/server/LootSelectorEntry.java
@@ -14,8 +14,8 @@ import java.util.Random;
public abstract class LootSelectorEntry {
- protected final int c;
- protected final int d;
+ protected final int c; public int getWeight() { return c; } // Paper - OBFHELPER
+ protected final int d; public int getQuality() { return d; } // Paper - OBFHELPER
protected final LootItemCondition[] e;
protected LootSelectorEntry(int i, int j, LootItemCondition[] alootitemcondition) {
@@ -25,8 +25,34 @@ public abstract class LootSelectorEntry {
}
public int a(float f) {
- return Math.max(MathHelper.d((float) this.c + (float) this.d * f), 0);
+ // Paper start - Offer an alternative loot formula to refactor how luck bonus applies
+ // SEE: https://luckformula.emc.gs for details and data
+ if (lastLuck != null && lastLuck == f) {
+ return lastWeight;
+ }
+ // This is vanilla
+ float qualityModifer = (float) this.getQuality() * f;
+ double baseWeight = (this.getWeight() + qualityModifer);
+ if (com.destroystokyo.paper.PaperConfig.useAlternativeLuckFormula) {
+ // Random boost to avoid losing precision in the final int cast on return
+ final int weightBoost = 100;
+ baseWeight *= weightBoost;
+ // If we have vanilla 1, bump that down to 0 so nothing is is impacted
+ // vanilla 3 = 300, 200 basis = impact 2%
+ // =($B2*(($B2-100)/100/100))
+ double impacted = baseWeight * ((baseWeight - weightBoost) / weightBoost / 100);
+ // =($B$7/100)
+ float luckModifier = Math.min(100, f * 10) / 100;
+ // =B2 - (C2 *($B$7/100))
+ baseWeight = Math.ceil(baseWeight - (impacted * luckModifier));
+ }
+ lastLuck = f;
+ lastWeight = (int) Math.max(0, Math.floor(baseWeight));
+ return lastWeight;
}
+ private Float lastLuck = null;
+ private int lastWeight = 0;
+ // Paper end
public abstract void a(Collection<ItemStack> collection, Random random, LootTableInfo loottableinfo);
--
2.21.0