nakoYaKgato

nakoYaKgato

Computers do not all run at the same speed. If you move something with x = x + 2 every frame, it travels fast on a quick computer and slowly on a slow one.

nakoYaKgato fixes that. Instead of moving by a fixed amount each frame, you move by an amount that depends on how long the last frame took: x = x + 60 * nakoYaKgato / 1000 travels 60 pixels a second on every computer.

When things are going well it sits near 16.7 — one second divided by 60.

There is no Setswana word for “millisecond”. It is seripagare se le sengwe sa motsotswana — one thousandth of a second. See millis.

Examples

A circle that moves at the same speed everywhere

Rerun ↻Open in editor ↗

diri x = 0;

tiro setaLoeto() {
  thalaKanefase(400, 200);
  tlhalosa('Sediko se se tsamayang go tswa molemeng go ya mojeng, se boela kwa tshimologong fa se fitlha kwa bokhutlong.');
}
tiro tshwantsha() {
  bokamorago(240);
  tlogelaMothalo();
  tlatsaMmala(220, 90, 70);

  // Diphikisele di le 120 mo motsotswaneng, go sa kgathalesege lebelo la khomphiutha
  x = x + 120 * nakoYaKgato / 1000;
  fa (x > 400) {
    x = 0;
  }

  thalaSediko(x, 100, 60);
}

See also

paloYaDikgato, lebeloLaDikgato, millis, tshwantsha