Implement level 1

Level 1 is now playable; more to be added

Enemies/Dark Matter.gd

@@ -0,0 +1,65 @@
+extends KinematicBody2D
+
+# Declare member variables here. Examples:
+# var a = 2
+# var b = "text"
+#onready var label = get_node("Label")
+onready var timer = get_node("Timer")
+var speed    : = 0.5
+var position_tracker = 0.0
+var player = null
+var obstacle = null
+var DisplayValue = 10
+# Called when the node enters the scene tree for the first time.
+func _ready() -> void:
+    pass # Replace with function body.
+
+func _physics_process(_delta):
+    if player == null:
+        translate(Vector2(speed, 0))
+        position_tracker += speed
+        if position_tracker >= 50 or position_tracker <=0:#enemy move back and forth
+            speed *= -1
+    if player:
+        translate(Vector2(position.direction_to(player.position) * abs(speed))) #enemy follow player
+
+    if obstacle == null:
+        $Sprite.texture = load("res://Sprites/Enemies/DarkMatter_barrier.png")
+
+    if obstacle:
+        $Sprite.texture = load("res://Sprites/Enemies/DarkMatter.png")
+# Called every frame. 'delta' is the elapsed time since the previous frame.
+#func _process(delta):
+#    pass
+
+func _on_Player_detect_body_entered(body):
+    #print("player entered")  # Replace with function body.
+    #print(body.name)#"Player"
+    if body.name == 'Player': #sometimes map_boundary is detected
+    #if body.get_parent().name == 'Player':
+        player = body
+
+func _on_Player_detect_body_exited(_body):
+    #print("player exit")
+    if _body.name == 'Player':
+        player = null
+
+func _on_Star_detect_body_entered(body_star):
+    #print("obstacle entered")
+    #print(body_star.name)#Obstacle
+    if body_star.name == 'Star':
+        obstacle = body_star
+        timer.set_wait_time(DisplayValue)
+        timer.start()
+        #print("timer start")
+
+func _on_Star_detect_body_exited(_body):
+    #if _body.name == 'Star': 
+        #print("obstacle exited")
+    #if _body.name == 'Obstacle':
+    #obstacle = null
+    null
+
+func _on_Timer_timeout():
+    #print("time out")
+    obstacle = null # Replace with function body.