////////////////////////////////////////////////////////////////////////////////////////
// copy / overwrite all the files inside the nightvision folder to your game () folder
// don't forget to include nightvision.wdl in your main game file
// place this line at the end of your main function: init_nvision();
/////////////////////////////////////////////////////////////////////////////////////////

bmap nvision640_map = <nv640.pcx>;
bmap nvision800_map = <nv800.pcx>;
bmap nvision1024_map = <nv1024.pcx>;

/////////////////////////////////////////////////////////////////////////////////////////

function init_nvision();

/////////////////////////////////////////////////////////////////////////////////////////

panel nvision640_pan
{
    bmap = nvision640_map;
    layer = 20;    
    pos_x = 0;
    pos_y = 0;
    flags = overlay, refresh, d3d;
}

panel nvision800_pan
{
    bmap = nvision800_map;
    layer = 20;    
    pos_x = 0;
    pos_y = 0;
    flags = overlay, refresh, d3d;
}

panel nvision1024_pan
{
    bmap = nvision1024_map;
    layer = 20;    
    pos_x = 0;
    pos_y = 0;
    flags = overlay, refresh, d3d;
}

entity fog_sprite
{
    type = <fog+5.pcx>;
    layer = 15;
    x = 200;
    y = 0;
    z = 0;
    flags = flare, bright;
}

///////////////////////////////////////////////////////////////////////////////

function init_nvision()
{
    while (1)
    {
        if (key_n == 1) // press and hold "N" for night vision
        {
            if (video_mode == 6) // 640x480
            {
                nvision640_pan.visible = on;
                nvision800_pan.visible = off;
                nvision1024_pan.visible = off;
            }
            if (video_mode == 7) // 800x600
            {
                nvision640_pan.visible = off;
                nvision800_pan.visible = on;
                nvision1024_pan.visible = off;
            }

            if (video_mode == 8) // 1024x768
            {
                nvision640_pan.visible = off;
                nvision800_pan.visible = off;
                nvision1024_pan.visible = on;
            }
            camera.ambient = 100;
            fog_sprite.visible = on;
            if (random(1) > 0.97) // every few seconds
            {
                fog_sprite.frame = random(5); // pick a random "fog" frame number
            }            
        }
        else
        {
            nvision640_pan.visible = off;
            nvision800_pan.visible = off;
            nvision1024_pan.visible = off;
            fog_sprite.visible = off;
            camera.ambient = 0;
        }
        wait (1);
    }            
}