Start working on 1.20

patches/unapplied/server/0753-Add-player-health-update-API.patch

@@ -0,0 +1,37 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: SamB440 <sam@islandearth.net>
+Date: Wed, 17 Nov 2021 12:31:42 +0000
+Subject: [PATCH] Add player health update API
+
+
+diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+index 88ec1bb0bea5aeb4a6e0ee628de58ac9f1f546cf..14f7fc4a6724ed4650117de2397052c54ae05df4 100644
+--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
++++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+@@ -2393,9 +2393,11 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
+         this.getHandle().maxHealthCache = getMaxHealth();
+     }
+ 
+-    public void sendHealthUpdate() {
++    // Paper start
++    @Override
++    public void sendHealthUpdate(final double health, final int foodLevel, final float saturationLevel) {
+         // Paper start - cancellable death event
+-        ClientboundSetHealthPacket packet = new ClientboundSetHealthPacket(this.getScaledHealth(), this.getHandle().getFoodData().getFoodLevel(), this.getHandle().getFoodData().getSaturationLevel());
++        ClientboundSetHealthPacket packet = new ClientboundSetHealthPacket((float) health, foodLevel, saturationLevel);
+         if (this.getHandle().queueHealthUpdatePacket) {
+             this.getHandle().queuedHealthUpdatePacket = packet;
+         } else {
+@@ -2404,6 +2406,12 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
+         // Paper end
+     }
+ 
++    @Override
++    public void sendHealthUpdate() {
++        this.sendHealthUpdate(this.getScaledHealth(), this.getHandle().getFoodData().getFoodLevel(), this.getHandle().getFoodData().getSaturationLevel());
++    }
++    // Paper end
++
+     public void injectScaledMaxHealth(Collection<AttributeInstance> collection, boolean force) {
+         if (!this.scaledHealth && !force) {
+             return;