From 467fc0ddc912ae38c3bf9fcb99e0b66d7478eec0 Mon Sep 17 00:00:00 2001
From: Loic Blot <loic.blot@unix-experience.fr>
Date: Wed, 18 Mar 2015 10:03:51 +0100
Subject: Add a Lua call to do damages / heals

---
 src/script/lua_api/l_object.cpp | 41 ++++++++++++++++++++++++++++++++++++++---
 1 file changed, 38 insertions(+), 3 deletions(-)

(limited to 'src/script/lua_api/l_object.cpp')

diff --git a/src/script/lua_api/l_object.cpp b/src/script/lua_api/l_object.cpp
index d8cfaf82b..079558c51 100644
--- a/src/script/lua_api/l_object.cpp
+++ b/src/script/lua_api/l_object.cpp
@@ -29,6 +29,8 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "content_sao.h"
 #include "server.h"
 #include "hud.h"
+#include "settings.h"
+#include "main.h"
 
 
 struct EnumString es_HudElementType[] =
@@ -255,10 +257,10 @@ int ObjectRef::l_set_hp(lua_State *L)
 	ObjectRef *ref = checkobject(L, 1);
 	luaL_checknumber(L, 2);
 	ServerActiveObject *co = getobject(ref);
-	if(co == NULL) return 0;
+	if(co == NULL)
+		return 0;
 	int hp = lua_tonumber(L, 2);
-	/*infostream<<"ObjectRef::l_set_hp(): id="<<co->getId()
-			<<" hp="<<hp<<std::endl;*/
+
 	// Do it
 	co->setHP(hp);
 	if (co->getType() == ACTIVEOBJECT_TYPE_PLAYER) {
@@ -289,6 +291,38 @@ int ObjectRef::l_get_hp(lua_State *L)
 	return 1;
 }
 
+// apply_damage(self, damage)
+// damage = amount of damage to apply
+// if damage is negative, heal the player
+// returns: nil
+int ObjectRef::l_apply_damage(lua_State *L)
+{
+	NO_MAP_LOCK_REQUIRED;
+	ObjectRef *ref = checkobject(L, 1);
+	luaL_checknumber(L, 2);
+	ServerActiveObject *co = getobject(ref);
+	if(co == NULL)
+		return 0;
+
+	int damage = lua_tonumber(L, 2);
+
+	// No damage, no heal => do nothing
+	if (damage == 0)
+		return 0;
+
+	// If damage is positive (not healing) and damage is disabled, ignore
+	if (damage > 0 && g_settings->getBool("enable_damage") == false)
+		return 0;
+
+	// Do damage/heal
+	co->setHP(co->getHP() - damage);
+	if (co->getType() == ACTIVEOBJECT_TYPE_PLAYER) {
+		getServer(L)->SendPlayerHPOrDie(((PlayerSAO*)co)->getPeerID(), co->getHP() == 0);
+	}
+
+	return 0;
+}
+
 // get_inventory(self)
 int ObjectRef::l_get_inventory(lua_State *L)
 {
@@ -1345,6 +1379,7 @@ const luaL_reg ObjectRef::methods[] = {
 	luamethod(ObjectRef, right_click),
 	luamethod(ObjectRef, set_hp),
 	luamethod(ObjectRef, get_hp),
+	luamethod(ObjectRef, apply_damage),
 	luamethod(ObjectRef, get_inventory),
 	luamethod(ObjectRef, get_wield_list),
 	luamethod(ObjectRef, get_wield_index),
-- 
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