weapon slots and loadout done

scripts/weapon_slot.gd

@@ -0,0 +1,25 @@
+class_name WeaponSlot
+extends Node3D
+
+@export var allowed_sizes: Array[WeaponDef.Size] = [WeaponDef.Size.MEDIUM]
+@export var allowed_types: Array[WeaponDef.Type] = [WeaponDef.Type.BALLISTIC]
+
+var weapon: Weapon = null   # currently mounted, if any
+
+func can_mount(def: WeaponDef) -> bool:
+	return def != null and def.weapon_scene != null \
+		and def.size in allowed_sizes and def.type in allowed_types
+
+func mount(def: WeaponDef) -> bool:
+	if not can_mount(def):
+		return false
+	unmount()
+	weapon = def.weapon_scene.instantiate()
+	weapon.def = def
+	add_child(weapon)
+	return true
+
+func unmount() -> void:
+	if weapon != null:
+		weapon.queue_free()
+		weapon = null