added the game

Scripts/Classes/Entities/Objects/SpikeBall.gd

@@ -0,0 +1,49 @@
+class_name SpikeBall
+extends CharacterBody2D
+
+var can_gravity := false
+const SPIKE_BALL_DESTRUCTION_PARTICLES = preload("uid://bk0arhpyyila6")
+func _physics_process(delta: float) -> void:
+	handle_movement(delta)
+	$Sprite.rotation_degrees += velocity.x * delta * 8
+	handle_block_collision()
+
+func handle_movement(delta: float) -> void:
+	if can_gravity:
+		velocity.y += (Global.entity_gravity / delta) * delta
+	if is_on_floor():
+		can_gravity = true
+		velocity.x += get_floor_normal().x * 4
+	if is_on_wall():
+		destroy()
+	if sign(get_floor_normal().x) != sign(velocity.x) and abs(get_floor_normal().x) > 0.2 and is_on_floor():
+		velocity.y = (velocity.length() * get_floor_normal().y) + Global.entity_gravity
+	move_and_slide()
+
+func destroy() -> void:
+	summon_particles()
+	AudioManager.play_sfx("block_break", global_position)
+	queue_free()
+
+func handle_block_collision() -> void:
+	for i in $Hitbox.get_overlapping_bodies():
+		if i is Block:
+			if global_position.y - 8 < i.global_position.y:
+				i.shell_block_hit.emit(null)
+
+func summon_particles() -> void:
+	var particles = SPIKE_BALL_DESTRUCTION_PARTICLES.instantiate()
+	particles.global_position = global_position
+	add_sibling(particles)
+
+func on_area_entered(area: Area2D) -> void:
+	if area.owner is SpikeBall and area.owner != self:
+		destroy()
+	if area.owner is Enemy:
+		if area.owner.has_node("ShellDetection"):
+			area.owner.die_from_object(self)
+	elif area.owner is Player:
+		if area.owner.is_invincible:
+			destroy()
+		else:
+			area.owner.damage()