Many changes

Handle it

player/modifiers/projectile_size_additive.gd

@@ -0,0 +1,25 @@
+class_name ProjectileSizeAdditive extends Modifier
+
+@export var size_increase: float = 0.5 # +50% bigger
+
+func _init():
+	id = "size_additive"
+	display_name = "Enlarged Projectiles"
+	description = "Increases projectile size by %d%%" % (size_increase * 100)
+	modifier_type = ModifierType.ADDITIVE
+
+func apply_stats_modification(final_stats: Dictionary, base_stats: Dictionary) -> void:
+	if final_stats.has("projectile_size"):
+		final_stats.projectile_size += size_increase
+
+func modify_projectile(projectile) -> void:
+    # This will be called when the projectile is created
+    # Scale is often handled in the recalculate_stats method, but we can also add visual effects here
+	projectile.connect("on_spawned", _on_projectile_spawned)
+
+func _on_projectile_spawned(projectile):
+    # Add a trail effect for larger projectiles
+		if projectile.scale.x > 1.2:
+			pass
+        #var trail = preload("res://scenes/projectile_trail.tscn").instantiate()
+        #projectile.add_child(trail)