Time scaling in NTT

NT/NTT support time scaling and custom framerates to adjust the speed of the game and allow for occasional "bullet time" effects if mods desire them.

This means that you can do

/gml s = 60; room_speed = s; current_time_scale = 30/s;

and that will make the game run at 60 fps instead of the default 30.

The following variables and functions concern time and time scale:

(current_frame % 1) < current_time_scale

var _ft = current_time_scale;
if ((current_frame % 1) < (_ft % 1)) return ceil(_ft);
return floor(_ft);

NT[T] automatically applies time scaling to the following:

• Movement variables and common functions
• image_speed (image_speed_raw accesses "true" image speed)
• Alarms
• More or less all of the game logic

When making mods, you might want to deal with time scaling if you are moving instances or implementing timers yourself, like so:

inst.x += 5 * current_time_scale;

this would move the instance to the right at 30*5➜150 pixels per second regardless of the game's framerate and/or time scaling effects.