*

Unity/Assets/Scripts/CarElectricSystem.cs

@@ -0,0 +1,46 @@
+using UnityEngine;
+using System.Collections;
+
+public enum PowerBusType{
+	Acc = 0,
+	On = 1
+}
+
+public class CarElectricSystem : MonoBehaviour {
+
+	public IElecticEnergySource energySource;
+	public IgnitionSystem ignition;
+	private PowerBus[] _powerBus;
+
+	// Use this for initialization
+	void Start () {
+
+		//create electric power buses
+		_powerBus = new PowerBus[]{new PowerBus(), new PowerBus()};
+		foreach (var bus in _powerBus) {
+			bus.ElectricSystem = this;
+		}
+
+		//attach to ignition system
+		if (ignition != null) {
+			ignition.PowerBus = _powerBus [(int)PowerBusType.On];
+			ignition.StateChanged += HandleIgnitionStateChanged;
+		} else {
+			Debug.LogWarning("Electric system: no ignition system attached");
+		}
+	}
+
+	void HandleIgnitionStateChanged (IgnitionSystem caller, IgnitionState oldState, IgnitionState newState){
+		_powerBus [(int)PowerBusType.Acc].Enabled = newState != IgnitionState.Lock;
+		_powerBus [(int)PowerBusType.On].Enabled = (newState != IgnitionState.Lock) && (newState != IgnitionState.Acc);
+	}
+
+	public PowerBus GetPowerBus(PowerBusType busType){
+		return _powerBus[(int)busType];
+	}
+	
+	// Update is called once per frame
+	void Update () {
+	
+	}
+}