Add combat combo gameplay

scenes/combat/player_projectile.gd

@@ -0,0 +1,42 @@
+class_name PlayerProjectile
+extends Node2D
+
+const EFFECT_TEXTURE := preload("res://assets/art/effects/effect_sheet.png")
+const FRAME_COUNT := 4
+const FRAME_TIME := 0.06
+const LIFE_TIME := 1.2
+
+var direction := Vector2.RIGHT
+var speed := 360.0
+var _age := 0.0
+var _sprite: Sprite2D
+
+
+func _init() -> void:
+	_create_sprite()
+
+
+func _ready() -> void:
+	add_to_group("player_projectiles")
+	if _sprite == null:
+		_create_sprite()
+
+
+func _create_sprite() -> void:
+	_sprite = Sprite2D.new()
+	_sprite.texture = EFFECT_TEXTURE
+	_sprite.hframes = 6
+	_sprite.vframes = 2
+	_sprite.centered = true
+	_sprite.scale = Vector2(2.0, 2.0)
+	add_child(_sprite)
+
+
+func _process(delta: float) -> void:
+	_age += delta
+	position += direction.normalized() * speed * delta
+	_sprite.frame = int(_age / FRAME_TIME) % FRAME_COUNT
+	if direction.x < 0.0:
+		_sprite.flip_h = true
+	if _age >= LIFE_TIME:
+		queue_free()