move systems + update contributing.md

1 files changed, 47 insertions, 0 deletions

diff --git a/src/crepe/system/ScriptSystem.cpp b/src/crepe/system/ScriptSystem.cpp
new file mode 100644
index 0000000..277b29d
--- /dev/null
+++ b/src/crepe/system/ScriptSystem.cpp
@@ -0,0 +1,47 @@
+#include <forward_list>
+#include <functional>
+#include <vector>
+
+#include "../api/BehaviorScript.h"
+#include "../api/Script.h"
+#include "../util/log.h"
+#include "../ComponentManager.h"
+
+#include "ScriptSystem.h"
+
+using namespace std;
+using namespace crepe;
+using namespace crepe::api;
+
+ScriptSystem::ScriptSystem() { dbg_trace(); }
+ScriptSystem::~ScriptSystem() { dbg_trace(); }
+
+ScriptSystem & ScriptSystem::get_instance() {
+	static ScriptSystem instance;
+	return instance;
+}
+
+void ScriptSystem::update() {
+	using namespace std;
+	dbg_trace();
+
+	forward_list<Script *> scripts = this->get_scripts();
+	for (Script * script : scripts) script->update();
+}
+
+forward_list<Script *> ScriptSystem::get_scripts() {
+	forward_list<Script *> scripts = {};
+	ComponentManager & mgr = ComponentManager::get_instance();
+	vector<reference_wrapper<BehaviorScript>> behavior_scripts
+		= mgr.get_components_by_type<BehaviorScript>();
+
+	for (auto behavior_script_ref : behavior_scripts) {
+		BehaviorScript & behavior_script = behavior_script_ref.get();
+		if (!behavior_script.active) continue;
+		Script * script = behavior_script.script.get();
+		if (script == nullptr) continue;
+		scripts.push_front(script);
+	}
+
+	return scripts;
+}