#795: Add methods to modify the rate of regeneration and starvation

By: Martoph <sager1018@gmail.com>

paper-server/nms-patches/FoodMetaData.patch

@@ -1,10 +1,15 @@
 --- a/net/minecraft/server/FoodMetaData.java
 +++ b/net/minecraft/server/FoodMetaData.java
-@@ -6,9 +6,17 @@
+@@ -6,9 +6,22 @@
      public float saturationLevel = 5.0F;
      public float exhaustionLevel;
      private int foodTickTimer;
-+    private EntityHuman entityhuman; // CraftBukkit
++    // CraftBukkit start
++    private EntityHuman entityhuman;
++    public int saturatedRegenRate = 10;
++    public int unsaturatedRegenRate = 80;
++    public int starvationRate = 80;
++    // CraftBukkit end
      private int e = 20;
  
 -    public FoodMetaData() {}
@@ -19,26 +24,26 @@
  
      public void eat(int i, float f) {
          this.foodLevel = Math.min(i + this.foodLevel, 20);
-@@ -18,8 +26,17 @@
+@@ -18,8 +31,17 @@
      public void a(Item item, ItemStack itemstack) {
          if (item.isFood()) {
              FoodInfo foodinfo = item.getFoodInfo();
 +            // CraftBukkit start
 +            int oldFoodLevel = foodLevel;
- 
--            this.eat(foodinfo.getNutrition(), foodinfo.getSaturationModifier());
++
 +            org.bukkit.event.entity.FoodLevelChangeEvent event = org.bukkit.craftbukkit.event.CraftEventFactory.callFoodLevelChangeEvent(entityhuman, foodinfo.getNutrition() + oldFoodLevel, itemstack);
 +
 +            if (!event.isCancelled()) {
 +                this.eat(event.getFoodLevel() - oldFoodLevel, foodinfo.getSaturationModifier());
 +            }
-+
+ 
+-            this.eat(foodinfo.getNutrition(), foodinfo.getSaturationModifier());
 +            ((EntityPlayer) entityhuman).getBukkitEntity().sendHealthUpdate();
 +            // CraftBukkit end
          }
  
      }
-@@ -33,7 +50,15 @@
+@@ -33,7 +55,15 @@
              if (this.saturationLevel > 0.0F) {
                  this.saturationLevel = Math.max(this.saturationLevel - 1.0F, 0.0F);
              } else if (enumdifficulty != EnumDifficulty.PEACEFUL) {
@@ -55,8 +60,12 @@
              }
          }
  
-@@ -44,15 +69,17 @@
-             if (this.foodTickTimer >= 10) {
+@@ -41,23 +71,25 @@
+ 
+         if (flag && this.saturationLevel > 0.0F && entityhuman.eJ() && this.foodLevel >= 20) {
+             ++this.foodTickTimer;
+-            if (this.foodTickTimer >= 10) {
++            if (this.foodTickTimer >= this.saturatedRegenRate) { // CraftBukkit
                  float f = Math.min(this.saturationLevel, 6.0F);
  
 -                entityhuman.heal(f / 6.0F);
@@ -68,12 +77,19 @@
              }
          } else if (flag && this.foodLevel >= 18 && entityhuman.eJ()) {
              ++this.foodTickTimer;
-             if (this.foodTickTimer >= 80) {
+-            if (this.foodTickTimer >= 80) {
 -                entityhuman.heal(1.0F);
 -                this.a(6.0F);
++            if (this.foodTickTimer >= this.unsaturatedRegenRate) { // CraftBukkit - add regen rate manipulation
 +                entityhuman.heal(1.0F, org.bukkit.event.entity.EntityRegainHealthEvent.RegainReason.SATIATED); // CraftBukkit - added RegainReason
 +                // this.a(6.0F); CraftBukkit - EntityExhaustionEvent
 +                entityhuman.applyExhaustion(6.0f, org.bukkit.event.entity.EntityExhaustionEvent.ExhaustionReason.REGEN); // CraftBukkit - EntityExhaustionEvent
                  this.foodTickTimer = 0;
              }
          } else if (this.foodLevel <= 0) {
+             ++this.foodTickTimer;
+-            if (this.foodTickTimer >= 80) {
++            if (this.foodTickTimer >= this.starvationRate) { // CraftBukkit - add regen rate manipulation
+                 if (entityhuman.getHealth() > 10.0F || enumdifficulty == EnumDifficulty.HARD || entityhuman.getHealth() > 1.0F && enumdifficulty == EnumDifficulty.NORMAL) {
+                     entityhuman.damageEntity(DamageSource.STARVE, 1.0F);
+                 }

paper-server/src/main/java/org/bukkit/craftbukkit/entity/CraftHumanEntity.java

@@ -574,4 +574,64 @@ public class CraftHumanEntity extends CraftLivingEntity implements HumanEntity {
     public boolean dropItem(boolean dropAll) {
         return getHandle().dropItem(dropAll);
     }
+
+    @Override
+    public float getExhaustion() {
+        return getHandle().getFoodData().exhaustionLevel;
+    }
+
+    @Override
+    public void setExhaustion(float value) {
+        getHandle().getFoodData().exhaustionLevel = value;
+    }
+
+    @Override
+    public float getSaturation() {
+        return getHandle().getFoodData().saturationLevel;
+    }
+
+    @Override
+    public void setSaturation(float value) {
+        getHandle().getFoodData().saturationLevel = value;
+    }
+
+    @Override
+    public int getFoodLevel() {
+        return getHandle().getFoodData().foodLevel;
+    }
+
+    @Override
+    public void setFoodLevel(int value) {
+        getHandle().getFoodData().foodLevel = value;
+    }
+
+    @Override
+    public int getSaturatedRegenRate() {
+        return getHandle().getFoodData().saturatedRegenRate;
+    }
+
+    @Override
+    public void setSaturatedRegenRate(int i) {
+        getHandle().getFoodData().saturatedRegenRate = i;
+    }
+
+    @Override
+    public int getUnsaturatedRegenRate() {
+        return getHandle().getFoodData().unsaturatedRegenRate;
+    }
+
+    @Override
+    public void setUnsaturatedRegenRate(int i) {
+        getHandle().getFoodData().unsaturatedRegenRate = i;
+    }
+
+    @Override
+    public int getStarvationRate() {
+        return getHandle().getFoodData().starvationRate;
+    }
+
+    @Override
+    public void setStarvationRate(int i) {
+        getHandle().getFoodData().starvationRate = i;
+    }
 }

paper-server/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java

@@ -1032,36 +1032,6 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
         getHandle().playerConnection.sendPacket(packet);
     }
 
-    @Override
-    public float getExhaustion() {
-        return getHandle().getFoodData().exhaustionLevel;
-    }
-
-    @Override
-    public void setExhaustion(float value) {
-        getHandle().getFoodData().exhaustionLevel = value;
-    }
-
-    @Override
-    public float getSaturation() {
-        return getHandle().getFoodData().saturationLevel;
-    }
-
-    @Override
-    public void setSaturation(float value) {
-        getHandle().getFoodData().saturationLevel = value;
-    }
-
-    @Override
-    public int getFoodLevel() {
-        return getHandle().getFoodData().foodLevel;
-    }
-
-    @Override
-    public void setFoodLevel(int value) {
-        getHandle().getFoodData().foodLevel = value;
-    }
-
     @Nullable
     private static WeakReference<Plugin> getPluginWeakReference(@Nullable Plugin plugin) {
         return (plugin == null) ? null : pluginWeakReferences.computeIfAbsent(plugin, WeakReference::new);