Ornamental Shelf Sliding Door FFC for Triforce Knight

//Ornamental Shelf for Triforce Knight Cane Leve
//By: ZoriaRPG, for BigJoe

const int FFC_CANE_LEVEL_DOOR_FLAG_OPEN_DOOR =  0000000001b;
const int FFC_CANE_LEVEL_DOOR_FLAG_STAY_OPEN =  0000000010b;

ffc script CaneLevelDoor
{
    void run(int reg, float px_dist_per_frame, int frame_timer, int open_grind_sfx,
            int stay_open, int fully_open_x)
    {
        int q[256];
        ffc lnk = Screen->LoadFFC(this->Link); //Get the second half.
        open_grind_sfx = ( open_grind_sfx << 0 );
        //
        //  q[0] - q[4] : Loop reservations. (unused)
        //
        //  Hell, we'll just go bitwise.
        //
        //  q[5] timer
        //  q[6] state that the door is open fully.
        //



                //Trace(Game->GetCurScreen());

        q[5] = frame_timer; //I might want to evaluate this in seconds.
            //TraceB(GetScreenDBit(119, reg, FFC_CANE_LEVEL_DOOR_FLAG_OPEN_DOOR));
        //If the door has been opened in the past and set not to animate on revisiting, open it fully.
        //This requires running on screen init.
        if ( GetScreenDBit(119, reg, FFC_CANE_LEVEL_DOOR_FLAG_OPEN_DOOR) && stay_open )
        {
            this->X = fully_open_x;
            lnk->X = fully_open_x+64;
            Screen->Door[DOOR_UP] = D_OPEN; //Change the solid wall, to a door.
            Quit();
        }
        //else { this->X = this->X; this->Y = this->Y;  }

        while(true)
        {
            if ( Screen->NumNPCs() ) { Waitframe(); } //Do not freeze Link and allow him to be murdered.

            if ( !GetScreenDBit(Game->GetCurScreen(), reg, FFC_CANE_LEVEL_DOOR_FLAG_OPEN_DOOR))
            {
                //If the external device has not set a bit on this screen, wait and do nothing.
                this->X = this->X; this->Y = this->Y;
                Waitframe();
            }


            else
            {
                while(Link->Action == LA_SCROLLING) { Waitframe(); continue; }
                // Set draw over for both ffcs here.
                this->Flags[FFCF_OVERLAY] = true;
                lnk->Flags[FFCF_OVERLAY] = true;

                Screen->Door[DOOR_UP] = D_OPEN; //Change the solid wall, to a door.
                //Otherwise, the trigger event has occurred.
                if ( !q[6] )
                {
                    if ( open_grind_sfx > 0 && open_grind_sfx < 256 ) Game->PlaySound(open_grind_sfx);
                    //If the sound is set, play it.
                    while( q[5]-- || this->X < fully_open_x )
                    {
                        //Open the door
                        this->X -= px_dist_per_frame;
                        lnk->X -= px_dist_per_frame;
                        WaitNoAction(); //Link does not move. He is stunned by the animation effects.
                    }
                    q[6] = 1; //The door is open.
                    this->Flags[FFCF_OVERLAY] = false;
                    lnk->Flags[FFCF_OVERLAY] = false;
                    if ( stay_open )
                    {
                        //If the animation does not repeat on revisiting the screen
                        //which is a terrible shame...

                        SetScreenDFlag( reg, FFC_CANE_LEVEL_DOOR_FLAG_STAY_OPEN, true );
                        break;
                    }

                }
            }
            Waitframe();
        } //End of main loop.

        //Any clean-up?


        Quit();
    }
}

ffc script SetCaneDoorBit
{
    void run(int reg, int screen, int enemies, int sfx)
    {
        if ( screen == -1 ) screen = 119;
        //what is the trigger?
        Waitframes( 5 ); //Wait for npcs to spawn.
        while(true)
        {
            if ( !enemies && !Screen->State[ST_SECRET] )  { Waitframe(); continue; }
            if ( enemies && Screen->NumNPCs() )  { Waitframe(); continue; }
            //We shall presume that the trigger is a secret state for the present.
            break;
        }

        if ( sfx  && !GetScreenDBit(screen, reg, FFC_CANE_LEVEL_DOOR_FLAG_OPEN_DOOR) ) Game->PlaySound( sfx ); //Play the sound only one time.
        //Set the remote bit and exit.
        SetScreenDBit(screen, reg, FFC_CANE_LEVEL_DOOR_FLAG_OPEN_DOOR, true);

        //Drawscreen the screen witht he secret?
        //TraceB(GetScreenDBit(119, reg, FFC_CANE_LEVEL_DOOR_FLAG_OPEN_DOOR));
        this->Data = 0; this->Script = 0; Quit();
    }
}