diff options
Diffstat (limited to 'src/video/sdl_v.cpp')
| -rw-r--r-- | src/video/sdl_v.cpp | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/src/video/sdl_v.cpp b/src/video/sdl_v.cpp index 1c88dfbcd..11da9c5a3 100644 --- a/src/video/sdl_v.cpp +++ b/src/video/sdl_v.cpp @@ -730,7 +730,13 @@ void VideoDriver_SDL::MainLoop() } if (cur_ticks >= next_game_tick || (_fast_forward && !_pause_mode)) { - next_game_tick = cur_ticks + std::chrono::milliseconds(MILLISECONDS_PER_TICK); + if (_fast_forward && !_pause_mode) { + next_game_tick = cur_ticks + std::chrono::milliseconds(MILLISECONDS_PER_TICK); + } else { + next_game_tick += std::chrono::milliseconds(MILLISECONDS_PER_TICK); + /* 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; + } /* The gameloop is the part that can run asynchronously. The rest * except sleeping can't. */ @@ -740,7 +746,9 @@ void VideoDriver_SDL::MainLoop() } if (cur_ticks >= next_draw_tick) { - next_draw_tick = cur_ticks + std::chrono::milliseconds(MILLISECONDS_PER_TICK); + next_draw_tick += std::chrono::milliseconds(MILLISECONDS_PER_TICK); + /* 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; bool old_ctrl_pressed = _ctrl_pressed; |