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Implement adjusting the maximum number of physics steps per rendered frame

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When using high physics FPS (which is a requirement to minimize input
lag and improve precision in simulation racing games), a higher value
prevents the game from slowing down at low rendering FPS.

This can be done via an Engine property for run-time changes,
or a project setting for initial changes.
This commit is contained in:
Hugo Locurcio 2022-09-15 18:57:34 +02:00
parent ca25c6e0a3
commit 66f7c48e39
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GPG key ID: 39E8F8BE30B0A49C
7 changed files with 43 additions and 3 deletions
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9
core/config/engine.cpp
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@ -48,6 +48,15 @@ int Engine::get_physics_ticks_per_second() const {
return ips;
}
void Engine::set_max_physics_steps_per_frame(int p_max_physics_steps) {
ERR_FAIL_COND_MSG(p_max_physics_steps <= 0, "Maximum number of physics steps per frame must be greater than 0.");
max_physics_steps_per_frame = p_max_physics_steps;
}
int Engine::get_max_physics_steps_per_frame() const {
return max_physics_steps_per_frame;
}
void Engine::set_physics_jitter_fix(double p_threshold) {
if (p_threshold < 0) {
p_threshold = 0;

4
core/config/engine.h
View file

@ -63,6 +63,7 @@ private:
int _max_fps = 0;
double _time_scale = 1.0;
uint64_t _physics_frames = 0;
int max_physics_steps_per_frame = 8;
double _physics_interpolation_fraction = 0.0f;
bool abort_on_gpu_errors = false;
bool use_validation_layers = false;
@ -93,6 +94,9 @@ public:
virtual void set_physics_ticks_per_second(int p_ips);
virtual int get_physics_ticks_per_second() const;
virtual void set_max_physics_steps_per_frame(int p_max_physics_steps);
virtual int get_max_physics_steps_per_frame() const;
void set_physics_jitter_fix(double p_threshold);
double get_physics_jitter_fix() const;