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Feature: configurable refresh-rate and change default to 60fps

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Most modern games run on 60 fps, and for good reason. This gives
a much smoother experiences.

As some people have monitors that can do 144Hz or even 240Hz, allow
people to configure the refresh rate. Of course, the higher you
set the value, the more time the game spends on drawing pixels
instead of simulating the game, which has an effect on simulation
speed.

The simulation will still always run at 33.33 fps, and is not
influences by this setting.
This commit is contained in:
Patric Stout
2021-02-17 15:31:09 +01:00
committed by Patric Stout
parent eb9b1ad68d
commit fa170b9ace
10 changed files with 50 additions and 27 deletions
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10
src/video/sdl_v.cpp
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@@ -731,11 +731,11 @@ void VideoDriver_SDL::MainLoop()
if (cur_ticks >= next_game_tick || (_fast_forward && !_pause_mode)) {
if (_fast_forward && !_pause_mode) {
next_game_tick = cur_ticks + std::chrono::milliseconds(MILLISECONDS_PER_TICK);
next_game_tick = cur_ticks + this->GetGameInterval();
} else {
next_game_tick += std::chrono::milliseconds(MILLISECONDS_PER_TICK);
next_game_tick += this->GetGameInterval();
/* Avoid next_game_tick getting behind more and more if it cannot keep up. */
if (next_game_tick < cur_ticks - std::chrono::milliseconds(ALLOWED_DRIFT * MILLISECONDS_PER_TICK)) next_game_tick = cur_ticks;
if (next_game_tick < cur_ticks - ALLOWED_DRIFT * this->GetGameInterval()) next_game_tick = cur_ticks;
}
/* The gameloop is the part that can run asynchronously. The rest
@@ -746,9 +746,9 @@ void VideoDriver_SDL::MainLoop()
}
if (cur_ticks >= next_draw_tick) {
next_draw_tick += std::chrono::milliseconds(MILLISECONDS_PER_TICK);
next_draw_tick += this->GetDrawInterval();
/* Avoid next_draw_tick getting behind more and more if it cannot keep up. */
if (next_draw_tick < cur_ticks - std::chrono::microseconds(ALLOWED_DRIFT * MILLISECONDS_PER_TICK)) next_draw_tick = cur_ticks;
if (next_draw_tick < cur_ticks - ALLOWED_DRIFT * this->GetDrawInterval()) next_draw_tick = cur_ticks;
bool old_ctrl_pressed = _ctrl_pressed;