Automated Z3 Shop (Preliminary)

const int FLAG_SHOP_ITEM_1 = 100;
const int FLAG_SHOP_ITEM_2 = 101;
const int FLAG_SHOP_ITEM_3 = 102;
const int CMB_SHOP_ITEM = 2500;
const int SHOP_PRICE_Y_OFFSET = 18;
const int SHOP_PRICE_X_OFFSET = -4;
const int SFX_BUYITEM = 63;
const int SHOP_STRING_LAYER = 2;
const int SHOP_STRING_SHADOW_X_OFFSET = 1;
const int SHOP_STRING_SHADOW_Y_OFFSET = 1;
const int SHOP_STRING_BG_COLOUR = 0x0F;
const int SHOP_STRING_FG_COLOUR = 0x01;

ffc script Automatic_Z3_Shop
{
    void run(int shop_id)
    {
        item shopitems[3];
        shopdata sd = Game->LoadShopData(shop_id);
        for ( int q = 0; q < 176; ++q )
        {
            //FInd the flags and place the items
            if ( Screen->ComboF[q] == FLAG_SHOP_ITEM_1 )
            {
                Screen->ComboD[q] = CMB_SHOP_ITEM;
                shopitems[0] = Screen->CreateItem(sd->Item[0]);
                shopitems[0]->X = ComboX(q);
                shopitems[0]->Y = ComboY(q);
                shopitems[0]->HitXOffset = -32768;
                shopitems[0]->PString = sd->String[0];
                shopitems[0]->PStringFlags |= 0x04;
            }
            if ( Screen->ComboF[q] == FLAG_SHOP_ITEM_2 )
            {
                Screen->ComboD[q] = CMB_SHOP_ITEM;
                shopitems[1] = Screen->CreateItem(sd->Item[1]);
                shopitems[1]->X = ComboX(q);
                shopitems[1]->Y = ComboY(q);
                shopitems[1]->HitXOffset = -32768;
                shopitems[1]->PString = sd->String[1];
                shopitems[1]->PStringFlags |= 0x04;

            }
            if ( Screen->ComboF[q] == FLAG_SHOP_ITEM_3 )
            {
                Screen->ComboD[q] = CMB_SHOP_ITEM;
                shopitems[2] = Screen->CreateItem(sd->Item[2]);
                shopitems[2]->X = ComboX(q);
                shopitems[2]->Y = ComboY(q);
                shopitems[2]->HitXOffset = -32768;
                shopitems[2]->PString = sd->String[2];
                shopitems[2]->PStringFlags |= 0x04;
            }
        }
        while(1)
        {

            //Draw the prices
            Screen->DrawString( SHOP_STRING_LAYER, shopitems[0]->X+SHOP_PRICE_X_OFFSET+SHOP_STRING_SHADOW_X_OFFSET,
                shopitems[0]->Y+SHOP_PRICE_Y_OFFSET+SHOP_STRING_SHADOW_Y_OFFSET, FONT_Z3_SMALL, SHOP_STRING_BG_COLOUR,
                0, 0, Game->GetMessage(sd->String[0]), OP_OPAQUE);

            Screen->DrawString( SHOP_STRING_LAYER, shopitems[0]->X+SHOP_PRICE_X_OFFSET,
                shopitems[0]->Y+SHOP_PRICE_Y_OFFSET, FONT_Z3_SMALL, SHOP_STRING_FG_COLOUR,
                0, 0, Game->GetMessage(sd->String[0]), OP_OPAQUE);

            Screen->DrawString( SHOP_STRING_LAYER, shopitems[1]->X+SHOP_PRICE_X_OFFSET+SHOP_STRING_SHADOW_X_OFFSET,
                shopitems[0]->Y+SHOP_PRICE_Y_OFFSET+SHOP_STRING_SHADOW_Y_OFFSET, FONT_Z3_SMALL, SHOP_STRING_BG_COLOUR,
                0, 0, Game->GetMessage(sd->String[1]), OP_OPAQUE);

            Screen->DrawString( SHOP_STRING_LAYER, shopitems[1]->X+SHOP_PRICE_X_OFFSET,
                shopitems[0]->Y+SHOP_PRICE_Y_OFFSET, FONT_Z3_SMALL, SHOP_STRING_FG_COLOUR,
                0, 0, Game->GetMessage(sd->String[1]), OP_OPAQUE);

            Screen->DrawString( SHOP_STRING_LAYER, shopitems[2]->X+SHOP_PRICE_X_OFFSET+SHOP_STRING_SHADOW_X_OFFSET,
                shopitems[0]->Y+SHOP_PRICE_Y_OFFSET+SHOP_STRING_SHADOW_Y_OFFSET, FONT_Z3_SMALL, SHOP_STRING_BG_COLOUR,
                0, 0, Game->GetMessage(sd->String[2]), OP_OPAQUE);

            Screen->DrawString( SHOP_STRING_LAYER, shopitems[2]->X+SHOP_PRICE_X_OFFSET,
                shopitems[0]->Y+SHOP_PRICE_Y_OFFSET, FONT_Z3_SMALL, SHOP_STRING_FG_COLOUR,
                0, 0, Game->GetMessage(sd->String[2]), OP_OPAQUE);

            for ( int q = 0; q < 3; ++q )
            {
                if ( PressedBuyButton() )
                {
                    if ( Link->Dir == DIR_UP )
                    {
                        if ( Game->Counter[CR_RUPEES] >= sd->Price[q] )
                        {
                            if ( Below(shopitems[q])
                            {
                                if ( DistXY(shopitems[q], 12) )
                                {
                                    Audio->PlaySound(SFX_BUYITEM);
                                    Game->DCounter[CR_RUPEES] += sd->Price[q];
                                    shopitems[q]->Pickup = IP_HOLDUP;
                                    shopitems[q]->HitXOffset = 0;
                                    shopitems[q]->X = Link->X;
                                    shopitems[q]->Y = Link->Y;
                                }
                            }
                        }
                    }
                }
            }
            Waitframe();
        }
    }
}