Potion.java.patch

--- ../src-base/minecraft/net/minecraft/potion/Potion.java
+++ ../src-work/minecraft/net/minecraft/potion/Potion.java
@@ -13,7 +13,9 @@
 import net.minecraft.entity.ai.attributes.IAttribute;
 import net.minecraft.entity.ai.attributes.IAttributeInstance;
 import net.minecraft.entity.player.EntityPlayer;
+import net.minecraft.entity.player.EntityPlayerMP;
 import net.minecraft.init.MobEffects;
+import net.minecraft.network.play.server.SPacketUpdateHealth;
 import net.minecraft.util.DamageSource;
 import net.minecraft.util.ResourceLocation;
 import net.minecraft.util.StringUtils;
@@ -21,16 +23,18 @@
 import net.minecraft.util.registry.RegistryNamespaced;
 import net.minecraftforge.fml.relauncher.Side;
 import net.minecraftforge.fml.relauncher.SideOnly;
+import org.bukkit.craftbukkit.event.CraftEventFactory;
+import org.bukkit.event.entity.EntityRegainHealthEvent.RegainReason;
 
-public class Potion
+public class Potion extends net.minecraftforge.registries.IForgeRegistryEntry.Impl<Potion>
 {
-    public static final RegistryNamespaced<ResourceLocation, Potion> REGISTRY = new RegistryNamespaced<ResourceLocation, Potion>();
+    public static final RegistryNamespaced<ResourceLocation, Potion> REGISTRY = net.minecraftforge.registries.GameData.getWrapper(Potion.class);
     private final Map<IAttribute, AttributeModifier> attributeModifierMap = Maps.<IAttribute, AttributeModifier>newHashMap();
     private final boolean isBadEffect;
     private final int liquidColor;
     private String name = "";
     private int statusIconIndex = -1;
-    private double effectiveness;
+    public double effectiveness;
     private boolean beneficial;
 
     @Nullable
@@ -78,14 +82,14 @@
         {
             if (entityLivingBaseIn.getHealth() < entityLivingBaseIn.getMaxHealth())
             {
-                entityLivingBaseIn.heal(1.0F);
+                entityLivingBaseIn.heal(1.0F, RegainReason.MAGIC_REGEN);
             }
         }
         else if (this == MobEffects.POISON)
         {
             if (entityLivingBaseIn.getHealth() > 1.0F)
             {
-                entityLivingBaseIn.attackEntityFrom(DamageSource.MAGIC, 1.0F);
+                entityLivingBaseIn.attackEntityFrom(CraftEventFactory.POISON, 1.0F); // CraftBukkit - DamageSource.MAGIC -> CraftEventFactory.POISON
             }
         }
         else if (this == MobEffects.WITHER)
@@ -100,7 +104,19 @@
         {
             if (!entityLivingBaseIn.world.isRemote)
             {
-                ((EntityPlayer)entityLivingBaseIn).getFoodStats().addStats(amplifier + 1, 1.0F);
+                // ((EntityPlayer)entityLivingBaseIn).getFoodStats().addStats(amplifier + 1, 1.0F);
+                // CraftBukkit start
+                EntityPlayer entityhuman = (EntityPlayer) entityLivingBaseIn;
+                int oldFoodLevel = entityhuman.getFoodStats().foodLevel;
+
+                org.bukkit.event.entity.FoodLevelChangeEvent event = CraftEventFactory.callFoodLevelChangeEvent(entityhuman, amplifier + 1 + oldFoodLevel);
+
+                if (!event.isCancelled()) {
+                    entityhuman.getFoodStats().addStats(event.getFoodLevel() - oldFoodLevel, 1.0F);
+                }
+
+                ((EntityPlayerMP) entityhuman).connection.sendPacket(new SPacketUpdateHealth(((EntityPlayerMP) entityhuman).getBukkitEntity().getScaledHealth(), entityhuman.getFoodStats().foodLevel, entityhuman.getFoodStats().foodSaturationLevel));
+                // CraftBukkit end
             }
         }
         else if ((this != MobEffects.INSTANT_HEALTH || entityLivingBaseIn.isEntityUndead()) && (this != MobEffects.INSTANT_DAMAGE || !entityLivingBaseIn.isEntityUndead()))
@@ -112,7 +128,7 @@
         }
         else
         {
-            entityLivingBaseIn.heal((float)Math.max(4 << amplifier, 0));
+            entityLivingBaseIn.heal((float)Math.max(4 << amplifier, 0), RegainReason.MAGIC);
         }
     }
 
@@ -222,7 +238,6 @@
         return this.statusIconIndex;
     }
 
-    @SideOnly(Side.CLIENT)
     public boolean isBadEffect()
     {
         return this.isBadEffect;
@@ -293,7 +308,85 @@
         return modifier.getAmount() * (double)(amplifier + 1);
     }
 
+    /* ======================================== FORGE START =====================================*/
+
+    /**
+     * If the Potion effect should be displayed in the players inventory
+     * @param effect the active PotionEffect
+     * @return true to display it (default), false to hide it.
+     */
+    public boolean shouldRender(PotionEffect effect) { return true; }
+
+    /**
+     * If the standard PotionEffect text (name and duration) should be drawn when this potion is active.
+     * @param effect the active PotionEffect
+     * @return true to draw the standard text
+     */
+    public boolean shouldRenderInvText(PotionEffect effect)
+    {
+        return true;
+    }
+
+    /**
+     * If the Potion effect should be displayed in the player's ingame HUD
+     * @param effect the active PotionEffect
+     * @return true to display it (default), false to hide it.
+     */
+    public boolean shouldRenderHUD(PotionEffect effect)
+    {
+        return true;
+    }
+
+    /**
+     * Called to draw the this Potion onto the player's inventory when it's active.
+     * This can be used to e.g. render Potion icons from your own texture.
+     * @param x the x coordinate
+     * @param y the y coordinate
+     * @param effect the active PotionEffect
+     * @param mc the Minecraft instance, for convenience
+     */
     @SideOnly(Side.CLIENT)
+    public void renderInventoryEffect(int x, int y, PotionEffect effect, net.minecraft.client.Minecraft mc) { }
+
+    /**
+     * Called to draw the this Potion onto the player's ingame HUD when it's active.
+     * This can be used to e.g. render Potion icons from your own texture.
+     * @param x the x coordinate
+     * @param y the y coordinate
+     * @param effect the active PotionEffect
+     * @param mc the Minecraft instance, for convenience
+     * @param alpha the alpha value, blinks when the potion is about to run out
+     */
+    @SideOnly(Side.CLIENT)
+    public void renderHUDEffect(int x, int y, PotionEffect effect, net.minecraft.client.Minecraft mc, float alpha) { }
+
+    /**
+     * Get a fresh list of items that can cure this Potion.
+     * All new PotionEffects created from this Potion will call this to initialize the default curative items
+     * @see PotionEffect#getCurativeItems
+     * @return A list of items that can cure this Potion
+     */
+    public java.util.List<net.minecraft.item.ItemStack> getCurativeItems()
+    {
+        java.util.ArrayList<net.minecraft.item.ItemStack> ret = new java.util.ArrayList<net.minecraft.item.ItemStack>();
+        ret.add(new net.minecraft.item.ItemStack(net.minecraft.init.Items.MILK_BUCKET));
+        return ret;
+    }
+    
+    /**
+     * Used for determining {@code PotionEffect} sort order in GUIs.
+     * Defaults to the {@code PotionEffect}'s liquid color.
+     * @param potionEffect the {@code PotionEffect} instance containing the potion
+     * @return a value used to sort {@code PotionEffect}s in GUIs 
+     */
+    public int getGuiSortColor(PotionEffect potionEffect)
+    {
+        return this.getLiquidColor();
+    }
+
+    /* ======================================== FORGE END =====================================*/
+
+    @SideOnly(Side.CLIENT)
     public boolean isBeneficial()
     {
         return this.beneficial;