Sara/behaviour-tree-test
1
0
Fork 0
Code Issues Pull requests Projects Releases 2 Packages Wiki Activity Actions

Fix GPUParticles Inherit Velocity breaking with physics movement

Browse source 
GPUParticles' Inherit Velocity property used to act strangely
if the physics tick rate was lower than the rendered FPS, as velocity
was tracked in the process and not in the physics process. This
means that on certain rendered frames, the velocity was effectively
0 since there was no movement since the last rendered frame.
This commit is contained in:
Hugo Locurcio 2024-07-02 01:46:57 +02:00
parent 9425535602
commit 33e1f570ff
No known key found for this signature in database
GPG key ID: 39E8F8BE30B0A49C
2 changed files with 28 additions and 17 deletions
Download patch file Download diff file Expand all files Collapse all files

23
scene/2d/gpu_particles_2d.cpp
View file

@ -688,6 +688,7 @@ void GPUParticles2D::_notification(int p_what) {
RS::get_singleton()->particles_set_speed_scale(particles, 0);
}
set_process_internal(true);
set_physics_process_internal(true);
previous_position = get_global_position();
} break;
@ -711,15 +712,6 @@ void GPUParticles2D::_notification(int p_what) {
} break;
case NOTIFICATION_INTERNAL_PROCESS: {
const Vector3 velocity = Vector3((get_global_position() - previous_position).x, (get_global_position() - previous_position).y, 0.0) /
get_process_delta_time();
if (velocity != previous_velocity) {
RS::get_singleton()->particles_set_emitter_velocity(particles, velocity);
previous_velocity = velocity;
}
previous_position = get_global_position();
if (one_shot) {
time += get_process_delta_time();
if (time > emission_time) {
@ -739,6 +731,19 @@ void GPUParticles2D::_notification(int p_what) {
}
}
} break;
case NOTIFICATION_INTERNAL_PHYSICS_PROCESS: {
// Update velocity in physics process, so that velocity calculations remain correct
// if the physics tick rate is lower than the rendered framerate (especially without physics interpolation).
const Vector3 velocity = Vector3((get_global_position() - previous_position).x, (get_global_position() - previous_position).y, 0.0) /
get_physics_process_delta_time();
if (velocity != previous_velocity) {
RS::get_singleton()->particles_set_emitter_velocity(particles, velocity);
previous_velocity = velocity;
}
previous_position = get_global_position();
} break;
}
}