New engine features

pan_setbmap (panel, element_type, element_number, new_bitmap)

Replaces the bmap for any panel element.

panel test_pan

{

       layer = 5;

       button = 50, 150, movie1_pcx, movie1_pcx, movie1_pcx, null, null, null;

       flags = visible;

}

// press "R" to replace the first movie1_pcx bitmap in the "button" definition

function replace_button()

{

       pan_setbmap (test_pan, 3, 0.1, movie2_pcx);

}

on_r = replace_button;

panel.angle, panel.center

These new instructions allow us to rotate a panel about its center.

bmap main_pcx = <main.pcx>;

panel* pan;

panel test_pan

{

       pos_x = 400;

       pos_y = 200;

       bmap = main_pcx;

       flags = overlay, visible;

}

function pan_rotate(p)

{

       pan = p; // set the panel pointer from the function parameter

       pan.center_x = pan.size_x * 0.5; // set the rotation center at the panel center

       pan.center_y = pan.size_y * 0.5;

       while (pan.angle < 360) // one full rotation

       {

               pan.angle += 10 * time_step;

               wait (1);

               pan = p; // local variables are preserved during wait(), global pointers aren't

       }

       pan.angle = 0;

}

function rotate_panel()

{

       pan_rotate (test_pan);

}

on_r = rotate_panel; // press "R" to rotate the panel

layer_sort (element, new_layer)

Places a panel, a text, a view, a view entity or a sky entity on a specified layer.
 

bmap movie1_pcx = <movie1.pcx>;

bmap movie2_pcx = <movie2.pcx>;

panel one_pan

{

       bmap = movie1_pcx;

       layer = 5;

       flags = overlay, visible;

}

panel two_pan

{

       bmap = movie2_pcx;

       layer = 6; // two_pan appears over one_pan at game start

       flags = overlay, visible;

}

function switch_layers()

{

       layer_sort(one_pan, 7); // press "S" to make one_pan appear over two_pan

}

on_s = switch_layers;