added attacks

scripts/entity.gd

@@ -0,0 +1,14 @@
+extends CharacterBody2D
+class_name Entity
+
+signal death
+
+var color := Color.WHITE
+@export var speed = 100
+var lives: int = 1
+
+func hit() -> void:
+	lives -= 1
+	if lives <= 0:
+		death.emit()
+		queue_free()