Added player

game-of-life-test/player.gd

@@ -0,0 +1,23 @@
+extends Area2D
+
+@export var speed = 400 # How fast the player will move (pixels/sec).
+var screen_size # Size of the game window.
+
+func _ready() -> void:
+	screen_size = get_viewport_rect().size
+
+func _process(delta):
+	var velocity = Vector2.ZERO # The player's movement vector.
+	if Input.is_action_pressed("move_right"):
+		velocity.x += 1
+	if Input.is_action_pressed("move_left"):
+		velocity.x -= 1
+
+	if velocity.length() > 0:
+		velocity = velocity.normalized() * speed
+		$AnimatedSprite2D.play()
+	else:
+		$AnimatedSprite2D.stop()
+		
+	position += velocity * delta
+	position = position.clamp(Vector2.ZERO, screen_size)