(help) Screenlock problem

I probaly adding a Screenlock function as in Shadow Genesis,but not work. 

WL_DEF.H:

Code:

//---------------
//
// gamestate structure
//
//---------------

typedef struct
{
    short      difficulty;
    short      mapon;
    int32_t    oldscore,score,nextextra;
    short      lives;
    short      health;
    short      ammo;
    short      keys;
    weapontype  bestweapon,weapon,chosenweapon;

    short      faceframe;
    short      attackframe,attackcount,weaponframe;

    short      episode,secretcount,treasurecount,killcount,
                secrettotal,treasuretotal,killtotal;
    int32_t    TimeCount;
    int32_t    killx,killy;
    boolean    danger;
    boolean    danger1;
    boolean    danger2;
    boolean    danger3;
    boolean    victoryflag;            // set during victory animations
} gametype;

void    KillActor (objtype *ob);
void    DamageActor (objtype *ob, unsigned damage);
void    Danger (objtype *ob);

WL_MAIN.CPP:

Code:

/*
=====================
=
= NewGame
=
= Set up new game to start from the beginning
=
=====================
*/

void NewGame (int difficulty,int episode)
{
    memset (&gamestate,0,sizeof(gamestate));
    gamestate.difficulty = difficulty;
    gamestate.weapon = gamestate.bestweapon
            = gamestate.chosenweapon = wp_pistol;
    gamestate.health = 100;
    gamestate.ammo = STARTAMMO;
    gamestate.lives = 3;
    gamestate.nextextra = EXTRAPOINTS;
    gamestate.episode=episode;
    gamestate.danger = true;

    startgame = true;
}

WL_GAME.CPP:

Code:

    gamestate.lives--;

    if (gamestate.lives > -1)
    {
        gamestate.health = 100;
        gamestate.weapon = gamestate.bestweapon
            = gamestate.chosenweapon = wp_pistol;
        gamestate.ammo = STARTAMMO;
        gamestate.keys = 0;
        pwallstate = pwallpos = 0;
        gamestate.attackframe = gamestate.attackcount =
            gamestate.weaponframe = 0;
        gamestate.danger = true;

        if(viewsize != 21)
        {
            DrawKeys ();
            DrawWeapon ();
            DrawAmmo ();
            DrawHealth ();
            DrawFace ();
            DrawLives ();
        }
    }
}

WL_STATE.CPP:

Code:

/*
===============
=
= Danger
=
===============
*/

void StatusDrawPic2 (unsigned x, unsigned y, unsigned picnum)
{
    LatchDrawPicScaledCoord ((screenWidth-scaleFactor*320)/16 + scaleFactor*x,
        screenHeight-scaleFactor*(STATUSLINES-y),picnum);
}

void Danger (objtype *ob)
{   
    gamestate.danger;
    {               
    FirstSighting (ob);                   
    gamestate.danger = false;
    }
    {
    }     
    gamestate.danger1;
    {               
    FirstSighting (ob);                   
    gamestate.danger = true;
    if(viewsize == 21 && ingame) return;
    StatusDrawPic2 (3,4,GOLDKEYPIC+gamestate.danger1);
    }
    {
    }     
    gamestate.danger2;
    {               
    FirstSighting (ob);                   
    gamestate.danger = true;
    if(viewsize == 21 && ingame) return;
    StatusDrawPic2 (3,4,SILVERKEYPIC+gamestate.danger2);
    }
    {
    }     
    gamestate.danger3;
    {               
    FirstSighting (ob);                   
    gamestate.danger = true;
    if(viewsize == 21 && ingame) return;
    StatusDrawPic2 (3,4,NOKEYPIC+gamestate.danger3);
         
}
}