Method ChangeWeapon

game/src/main/java/jake2/game/PlayerWeapon.java:1064–1116

(SubgameEntity ent, GameExportsImpl gameExports)

     * ===============
     */
    public static void ChangeWeapon(SubgameEntity ent, GameExportsImpl gameExports) {
        int i;

        gclient_t client = ent.getClient();
        if (client.grenade_time != 0) {
            client.grenade_time = gameExports.level.time;
            client.weapon_sound = 0;
            weapon_grenade_fire(ent, false, gameExports);
            client.grenade_time = 0;
        }

        client.pers.lastweapon = client.pers.weapon;
        client.pers.weapon = client.newweapon;
        client.newweapon = null;
        client.machinegun_shots = 0;

        // set visible model
        if (ent.s.modelindex == 255) {
            if (client.pers.weapon != null)
                i = ((client.pers.weapon.weapmodel & 0xff) << 8);
            else
                i = 0;
            ent.s.skinnum = (ent.index - 1) | i;
        }

        if (client.pers.weapon != null
                && client.pers.weapon.ammo != null)

            client.ammo_index = GameItems
                    .FindItem(client.pers.weapon.ammo, gameExports).index;
        else
            client.ammo_index = 0;

        if (client.pers.weapon == null) { // dead
            client.getPlayerState().gunindex = 0;
            return;
        }

        client.weaponstate = WeaponStates.WEAPON_ACTIVATING;
        client.getPlayerState().gunframe = 0;
        client.getPlayerState().gunindex = gameExports.gameImports
                .modelindex(client.pers.weapon.view_model);

        client.anim_priority = Defines.ANIM_PAIN;
        if ((client.getPlayerState().pmove.pm_flags & Defines.PMF_DUCKED) != 0) {
            ent.s.frame = M_Player.FRAME_crpain1;
            client.anim_end = M_Player.FRAME_crpain4;
        } else {
            ent.s.frame = M_Player.FRAME_pain301;
            client.anim_end = M_Player.FRAME_pain304;

        }
    }

    /*
     * =================