player and snake movement

prefabs/snake_segment.gd

@@ -0,0 +1,37 @@
+extends AnimatableBody2D
+class_name snake_segment
+
+@export var is_head : bool = false
+var direction : Vector2 = Vector2.RIGHT
+var want_direction : Vector2 = Vector2.RIGHT
+
+@export var next_segment : Node2D
+var start_pos : Vector2
+var target_pos : Vector2
+var move_progress : float
+# if snake is the head, it chooses where it goes
+# if snake is not the head, it goes where the one infront went
+
+# Called when the node enters the scene tree for the first time.
+func _ready() -> void:
+	start_pos = position
+	get_new_target()
+
+
+# Called every frame. 'delta' is the elapsed time since the previous frame.
+func _process(delta: float) -> void:
+	move_progress += delta
+	if Input.get_vector("left","right","up","down").length() > 0:
+		want_direction = Input.get_vector("left","right","up","down")
+	position = lerp(start_pos,target_pos,move_progress)
+	if move_progress >= 1:
+		get_new_target()
+	
+func get_new_target():
+	start_pos=target_pos
+	if is_head:
+		direction = want_direction
+		target_pos = start_pos + (direction * 320)
+	else:
+		target_pos = next_segment.position
+	move_progress = 0