Cstrike: Add cs_get_weapon_info() native

plugins/include/cstrike.inc

@@ -1062,6 +1062,17 @@ stock cs_get_weapon_class(weapon_id)
 	
 }
 
+/**
+ * Returns some information about a weapon.
+ *
+ * @param weapon_id     Weapon id, see CSW_* constants
+ * @param type          Info type, see CS_WEAPONINFO_* constants
+ *
+ * @return              Weapon information value
+ * @error               If weapon_id and type are out of bound, an error will be thrown.
+ */
+native any:cs_get_weapon_info(weapon_id, CsWeaponInfo:type);
+
 /**
  * Called when CS internally fires a command to a player.
  *

plugins/include/cstrike_const.inc

@@ -346,3 +346,13 @@ enum CsAmmoType
 	CS_AMMO_57MM       = 8,
 	CS_AMMO_357SIG     = 9,
 };
+
+enum CsWeaponInfo
+{
+	CS_WEAPONINFO_COST          = 0,
+	CS_WEAPONINFO_CLIP_COST     = 1,
+	CS_WEAPONINFO_BUY_CLIP_SIZE = 2,
+	CS_WEAPONINFO_GUN_CLIP_SIZE = 3,
+	CS_WEAPONINFO_MAX_ROUNDS    = 4,
+	CS_WEAPONINFO_AMMO_TYPE     = 5,
+};