C_BasePlayer* player = GetLocalPlayer(); // Get a pointer to the local player C_BaseCombatWeapon* weapon = player->GetActiveWeapon(); // Get the active weapon if (weapon != NULL) { weapon->Fire(); // Fire the weapon if it exists }In this example, we first get a pointer to the local player using the GetLocalPlayer function (which is not shown here). We then call the GetActiveWeapon function on the player object to get a pointer to their active weapon. Finally, we check if the weapon exists (i.e. is not NULL) and if it does, we call the Fire function on the weapon object to simulate firing the weapon. The package library for C_BasePlayer GetActiveWeapon depends on the game engine being used. This function is part of the Source engine used in Valve's games such as Counter-Strike: Global Offensive and Team Fortress 2. As such, the package library would be the Source SDK.