Engine basic added

Engine.gd

@@ -0,0 +1,32 @@
+extends Module
+class_name TrainEngine
+
+
+enum STATE {RUNNING, DEAD}
+
+#------------Methods-------------#
+func _ready():
+	var root = get_tree().root.get_child(0)
+	maxStashValue = 100
+	currentStashValue = 100
+	currentState = STATE.RUNNING
+#TODO: FINISH
+func interact():
+	if currentState == STATE.RUNNING:
+		if currentStashValue < maxStashValue:
+			currentStashValue += 10 
+			if currentStashValue > maxStashValue:
+				currentStashValue = maxStashValue
+				
+		return
+	#TODO: Repair Train
+	currentState = STATE.RUNNING
+
+	if currentStashValue == 1 and currentState == STATE.INACTIVE:
+		currentState = STATE.SHOOTING
+		#TODO: SHOOTING
+		currentState = STATE.INACTIVE
+	
+	return
+
+