Add minetest.register_on_player_hpchange

3 files changed, 26 insertions, 0 deletions

diff --git a/src/content_sao.cpp b/src/content_sao.cpp
index 1a0fce0bb..318dd367a 100644
--- a/src/content_sao.cpp
+++ b/src/content_sao.cpp
@@ -1125,6 +1125,12 @@ void PlayerSAO::setHP(s16 hp)
 {
 	s16 oldhp = m_player->hp;
 
+	s16 hp_change = m_env->getScriptIface()->on_player_hpchange(this,
+		hp - oldhp);
+	if (hp_change == 0)
+		return;
+	hp = oldhp + hp_change;
+
 	if (hp < 0)
 		hp = 0;
 	else if (hp > PLAYER_MAX_HP)
diff --git a/src/script/cpp_api/s_player.cpp b/src/script/cpp_api/s_player.cpp
index 9b2c3753c..a499130c7 100644
--- a/src/script/cpp_api/s_player.cpp
+++ b/src/script/cpp_api/s_player.cpp
@@ -69,6 +69,25 @@ bool ScriptApiPlayer::on_punchplayer(ServerActiveObject *player,
 	return lua_toboolean(L, -1);
 }
 
+s16 ScriptApiPlayer::on_player_hpchange(ServerActiveObject *player,
+	s16 hp_change)
+{
+	SCRIPTAPI_PRECHECKHEADER
+
+	// Get core.registered_on_player_hpchange
+	lua_getglobal(L, "core");
+	lua_getfield(L, -1, "registered_on_player_hpchange");
+	lua_remove(L, -2);
+
+	objectrefGetOrCreate(L, player);
+	lua_pushnumber(L, hp_change);
+	if (lua_pcall(L, 2, 1, m_errorhandler))
+		scriptError();
+	hp_change = lua_tointeger(L, -1);
+	lua_pop(L, -1);
+	return hp_change;
+}
+
 bool ScriptApiPlayer::on_respawnplayer(ServerActiveObject *player)
 {
 	SCRIPTAPI_PRECHECKHEADER
diff --git a/src/script/cpp_api/s_player.h b/src/script/cpp_api/s_player.h
index 9c8d1d1ad..2e4dc2222 100644
--- a/src/script/cpp_api/s_player.h
+++ b/src/script/cpp_api/s_player.h
@@ -43,6 +43,7 @@ public:
 	bool on_punchplayer(ServerActiveObject *player,
 		ServerActiveObject *hitter, float time_from_last_punch,
 		const ToolCapabilities *toolcap, v3f dir, s16 damage);
+	s16 on_player_hpchange(ServerActiveObject *player, s16 hp_change);
 	void on_playerReceiveFields(ServerActiveObject *player,
 		const std::string &formname, const StringMap &fields);
 };