basic ECS spawner

addons/gecs/tests/systems/s_test_a.gd

@@ -0,0 +1,21 @@
+class_name TestASystem
+extends System
+
+
+func deps():
+	return {
+		Runs.After: [], # Doesn't run after any other system
+		Runs.Before: [ECS.wildcard], # This system runs before all other systems
+	}
+
+
+func query():
+	return ECS.world.query.with_all([C_TestA])
+
+
+func process(entities: Array[Entity], components: Array, delta: float):
+	for entity in entities:
+		var a = entity.get_component(C_TestA) as C_TestA
+		a.value += 1
+		a.property_changed.emit(a, 'value', null, null)
+		print("TestASystem: ", entity.name, a.value)