From 4b23c2a15c95cfe4147b713518409d0609092af0 Mon Sep 17 00:00:00 2001
From: Brandon <bzoss@mit.edu>
Date: Thu, 18 Jun 2020 16:56:19 -0400
Subject: [PATCH] Update potions for mob effects.  Healing harms zombies,
 harming heals zombies.

---
 mods/ITEMS/mcl_potions/functions.lua | 14 +++++++++++++-
 mods/ITEMS/mcl_potions/init.lua      |  2 +-
 mods/ITEMS/mcl_potions/lingering.lua |  2 +-
 mods/ITEMS/mcl_potions/potions.lua   |  1 +
 mods/ITEMS/mcl_potions/splash.lua    |  6 +++---
 5 files changed, 19 insertions(+), 6 deletions(-)

diff --git a/mods/ITEMS/mcl_potions/functions.lua b/mods/ITEMS/mcl_potions/functions.lua
index 886502cf..410717d0 100644
--- a/mods/ITEMS/mcl_potions/functions.lua
+++ b/mods/ITEMS/mcl_potions/functions.lua
@@ -31,7 +31,19 @@ function mcl_potions._use_potion(item)
 	minetest.sound_play("mcl_potions_drinking")
 end
 
-function mcl_potions.healing_func(player, hp) player:set_hp(player:get_hp() + hp) end
+local is_zombie = {}
+
+for i, zombie in ipairs({"husk","zombie","pigman"}) do
+	is_zombie["mobs_mc:"..zombie] = true
+	is_zombie["mobs_mc:baby_"..zombie] = true
+end
+
+function mcl_potions.healing_func(player, hp)
+	
+	if is_zombie[player:get_entity_name()] then hp = -hp end
+	player:set_hp(player:get_hp() + hp)
+
+end
 
 function mcl_potions.swiftness_func(player, factor, duration)
 	playerphysics.add_physics_factor(player, "speed", "swiftness", factor)
diff --git a/mods/ITEMS/mcl_potions/init.lua b/mods/ITEMS/mcl_potions/init.lua
index e782b43e..2e31316c 100644
--- a/mods/ITEMS/mcl_potions/init.lua
+++ b/mods/ITEMS/mcl_potions/init.lua
@@ -7,7 +7,7 @@ dofile(modpath .. "/splash.lua")
 dofile(modpath .. "/lingering.lua")
 dofile(modpath .. "/potions.lua")
 
-local brewhelp = S("Put this item in an item frame for decoration. It's useless otherwise.")
+local brewhelp = S("Try different combinations to create potions.")
 
 minetest.register_craftitem("mcl_potions:fermented_spider_eye", {
 	description = S("Fermented Spider Eye"),
diff --git a/mods/ITEMS/mcl_potions/lingering.lua b/mods/ITEMS/mcl_potions/lingering.lua
index 053601d4..383f6e22 100644
--- a/mods/ITEMS/mcl_potions/lingering.lua
+++ b/mods/ITEMS/mcl_potions/lingering.lua
@@ -60,7 +60,7 @@ local function register_lingering(name, descr, color, def)
             self.object:remove()
 						for i, obj in ipairs(minetest.get_objects_inside_radius(pos, 4)) do
 
-							if minetest.is_player(obj) then
+							if minetest.is_player(obj) or obj:get_entity_name() then
 
 								pos2 = obj:get_pos()
 								local rad = math.floor(math.sqrt((pos2.x-pos.x)^2 + (pos2.y-pos.y)^2 + (pos2.z-pos.z)^2))
diff --git a/mods/ITEMS/mcl_potions/potions.lua b/mods/ITEMS/mcl_potions/potions.lua
index 32ddb378..bdae4326 100644
--- a/mods/ITEMS/mcl_potions/potions.lua
+++ b/mods/ITEMS/mcl_potions/potions.lua
@@ -1,4 +1,5 @@
 local S = minetest.get_translator("mcl_potions")
+local brewhelp = S("Try different combinations to create potions.")
 
 local potion_image = function(colorstring, opacity)
 	if not opacity then
diff --git a/mods/ITEMS/mcl_potions/splash.lua b/mods/ITEMS/mcl_potions/splash.lua
index e4576f0b..4543386f 100644
--- a/mods/ITEMS/mcl_potions/splash.lua
+++ b/mods/ITEMS/mcl_potions/splash.lua
@@ -60,7 +60,7 @@ local function register_splash(name, descr, color, def)
             self.object:remove()
 						for i, obj in ipairs(minetest.get_objects_inside_radius(pos, 4)) do
 
-							if minetest.is_player(obj) then
+							if minetest.is_player(obj) or obj:get_entity_name() then
 
 								pos2 = obj:get_pos()
 								local rad = math.floor(math.sqrt((pos2.x-pos.x)^2 + (pos2.y-pos.y)^2 + (pos2.z-pos.z)^2))
@@ -95,11 +95,11 @@ register_splash("thick", "Splash Thick Potion", "#0000FF", {
 })
 
 register_splash("healing", "Splash Healing", "#AA0000", {
-    potion_fun = function(player, redx) player:set_hp(player:get_hp() + 3*redx) end,
+    potion_fun = function(player, redx) mcl_potions.healing_func(player, 3*redx) end,
 })
 
 register_splash("healing_2", "Splash Healing II", "#DD0000", {
-    potion_fun = function(player, redx) player:set_hp(player:get_hp() + 6*redx) end,
+    potion_fun = function(player, redx) mcl_potions.healing_func(player, 6*redx) end,
 })
 
 register_splash("harming", "Splash Harming", "#660099", {