From babd5e5596cefc7b2e15825976e084591f275d6f Mon Sep 17 00:00:00 2001
From: Clyne Sullivan <tullivan99@gmail.com>
Date: Thu, 28 Sep 2017 17:28:59 -0400
Subject: lua - references

---
 src/systems/lua.cpp      | 23 +++++++++++++++++++++++
 src/systems/movement.cpp |  4 ++--
 2 files changed, 25 insertions(+), 2 deletions(-)

(limited to 'src')

diff --git a/src/systems/lua.cpp b/src/systems/lua.cpp
index b093aff..fa1e93e 100644
--- a/src/systems/lua.cpp
+++ b/src/systems/lua.cpp
@@ -1,2 +1,25 @@
 #include <systems/lua.hpp>
 
+void LuaScript::setGlobal(const LuaVariable& nv)
+{
+	lua_pushnumber(state, std::get<float&>(nv));
+	lua_setglobal(state, std::get<std::string>(nv).c_str());
+}
+
+void LuaScript::operator()(std::vector<LuaVariable> vars)
+{
+	for (auto& v : vars)
+		setGlobal(v);
+	(*this)();
+	for (auto& v : vars) {
+		lua_getglobal(state, std::get<std::string>(v).c_str());
+		std::get<float&>(v) = lua_tonumber(state, -1);
+	}
+}
+
+void LuaScript::operator()(void)
+{
+	lua_getglobal(state, "update");
+	lua_pcall(state, 0, LUA_MULTRET, 0);
+}
+
diff --git a/src/systems/movement.cpp b/src/systems/movement.cpp
index 4eb574d..1a7112a 100644
--- a/src/systems/movement.cpp
+++ b/src/systems/movement.cpp
@@ -75,8 +75,8 @@ void MovementSystem::update(entityx::EntityManager &en, entityx::EventManager &e
 			// make the entity wander
 			// TODO initialX and range?
 			if (entity.has_component<Wander>()) {
-				auto vel = entity.component<Wander>()->script();
-				direction.x = vel.x;
+				entity.component<Wander>()->script({LuaVariable("vely", direction.y),
+					LuaVariable("velx", direction.x)});
 				/*auto& countdown = entity.component<Wander>()->countdown;
 
 				if (countdown > 0) {
-- 
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