added tin

objects/enemy/enemy_move_diagonal.gd

@@ -0,0 +1,29 @@
+extends "res://objects/enemy/enemy.gd"
+
+#How far to move
+export var up_boundary = 0.0
+export var down_boundary = 0.0
+#Start direction
+var direction = Vector2(1,1)
+export var speed = 50
+#Move horizontal or vertical
+export(int, "Left To Right", "Right To Left") var move_direction
+#Onreadys
+onready var startpos = position
+
+func _ready():
+	death_sound = Game.a_die_robot
+	up_boundary *= 8
+	down_boundary *= 8
+	#Move in direction selected
+	if move_direction == 0:
+		direction = Vector2(-1,-1)
+
+func _physics_process(delta):
+	#Move
+	position += direction * (speed * delta)
+	#Switch dir
+	if position.y >= startpos.y + (down_boundary): 
+		direction *= -1
+	if position.y <= startpos.y - (up_boundary): 
+		direction *= -1