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-rw-r--r--scene/3d/cpu_particles.cpp118
1 files changed, 82 insertions, 36 deletions
diff --git a/scene/3d/cpu_particles.cpp b/scene/3d/cpu_particles.cpp
index 138c446fea..cff147ba74 100644
--- a/scene/3d/cpu_particles.cpp
+++ b/scene/3d/cpu_particles.cpp
@@ -302,9 +302,9 @@ void CPUParticles::set_param_curve(Parameter p_param, const Ref<Curve> &p_curve)
case PARAM_ANGULAR_VELOCITY: {
_adjust_curve_range(p_curve, -360, 360);
} break;
- /*case PARAM_ORBIT_VELOCITY: {
+ case PARAM_ORBIT_VELOCITY: {
_adjust_curve_range(p_curve, -500, 500);
- } break;*/
+ } break;
case PARAM_LINEAR_ACCEL: {
_adjust_curve_range(p_curve, -200, 200);
} break;
@@ -461,11 +461,10 @@ void CPUParticles::_validate_property(PropertyInfo &property) const {
if (property.name == "emission_normals" && emission_shape != EMISSION_SHAPE_DIRECTED_POINTS) {
property.usage = 0;
}
- /*
+
if (property.name.begins_with("orbit_") && !flags[FLAG_DISABLE_Z]) {
property.usage = 0;
}
- */
}
static uint32_t idhash(uint32_t x) {
@@ -515,6 +514,8 @@ void CPUParticles::_particles_process(float p_delta) {
velocity_xform = emission_xform.basis;
}
+ float system_phase = time / lifetime;
+
for (int i = 0; i < pcount; i++) {
Particle &p = parray[i];
@@ -522,21 +523,26 @@ void CPUParticles::_particles_process(float p_delta) {
if (!emitting && !p.active)
continue;
- float restart_time = (float(i) / float(pcount)) * lifetime;
float local_delta = p_delta;
+ // The phase is a ratio between 0 (birth) and 1 (end of life) for each particle.
+ // While we use time in tests later on, for randomness we use the phase as done in the
+ // original shader code, and we later multiply by lifetime to get the time.
+ float restart_phase = float(i) / float(pcount);
+
if (randomness_ratio > 0.0) {
uint32_t seed = cycle;
- if (restart_time >= time) {
+ if (restart_phase >= system_phase) {
seed -= uint32_t(1);
}
seed *= uint32_t(pcount);
seed += uint32_t(i);
float random = float(idhash(seed) % uint32_t(65536)) / 65536.0;
- restart_time += randomness_ratio * random * 1.0 / float(pcount);
+ restart_phase += randomness_ratio * random * 1.0 / float(pcount);
}
- restart_time *= (1.0 - explosiveness_ratio);
+ restart_phase *= (1.0 - explosiveness_ratio);
+ float restart_time = restart_phase * lifetime;
bool restart = false;
if (time > prev_time) {
@@ -691,16 +697,14 @@ void CPUParticles::_particles_process(float p_delta) {
if (curve_parameters[PARAM_INITIAL_LINEAR_VELOCITY].is_valid()) {
tex_linear_velocity = curve_parameters[PARAM_INITIAL_LINEAR_VELOCITY]->interpolate(p.custom[1]);
}
- /*
- float tex_orbit_velocity = 0.0;
+ float tex_orbit_velocity = 0.0;
if (flags[FLAG_DISABLE_Z]) {
-
- if (curve_parameters[PARAM_INITIAL_ORBIT_VELOCITY].is_valid()) {
- tex_orbit_velocity = curve_parameters[PARAM_INITIAL_ORBIT_VELOCITY]->interpolate(p.custom[1]);
+ if (curve_parameters[PARAM_ORBIT_VELOCITY].is_valid()) {
+ tex_orbit_velocity = curve_parameters[PARAM_ORBIT_VELOCITY]->interpolate(p.custom[1]);
}
}
-*/
+
float tex_angular_velocity = 0.0;
if (curve_parameters[PARAM_ANGULAR_VELOCITY].is_valid()) {
tex_angular_velocity = curve_parameters[PARAM_ANGULAR_VELOCITY]->interpolate(p.custom[1]);
@@ -754,8 +758,9 @@ void CPUParticles::_particles_process(float p_delta) {
//apply tangential acceleration;
if (flags[FLAG_DISABLE_Z]) {
- Vector3 yx = Vector3(diff.y, 0, diff.x);
- force += yx.length() > 0.0 ? (yx * Vector3(-1.0, 0, 1.0)) * ((parameters[PARAM_TANGENTIAL_ACCEL] + tex_tangential_accel) * Math::lerp(1.0f, rand_from_seed(alt_seed), randomness[PARAM_TANGENTIAL_ACCEL])) : Vector3();
+ Vector2 yx = Vector2(diff.y, diff.x);
+ Vector2 yx2 = (yx * Vector2(-1.0, 1.0)).normalized();
+ force += yx.length() > 0.0 ? Vector3(yx2.x, yx2.y, 0.0) * ((parameters[PARAM_TANGENTIAL_ACCEL] + tex_tangential_accel) * Math::lerp(1.0f, rand_from_seed(alt_seed), randomness[PARAM_TANGENTIAL_ACCEL])) : Vector3();
} else {
Vector3 crossDiff = diff.normalized().cross(gravity.normalized());
@@ -764,18 +769,18 @@ void CPUParticles::_particles_process(float p_delta) {
//apply attractor forces
p.velocity += force * local_delta;
//orbit velocity
-#if 0
if (flags[FLAG_DISABLE_Z]) {
-
- float orbit_amount = (orbit_velocity + tex_orbit_velocity) * mix(1.0, rand_from_seed(alt_seed), orbit_velocity_random);
+ float orbit_amount = (parameters[PARAM_ORBIT_VELOCITY] + tex_orbit_velocity) * Math::lerp(1.0f, rand_from_seed(alt_seed), randomness[PARAM_ORBIT_VELOCITY]);
if (orbit_amount != 0.0) {
- float ang = orbit_amount * DELTA * pi * 2.0;
- mat2 rot = mat2(vec2(cos(ang), -sin(ang)), vec2(sin(ang), cos(ang)));
- TRANSFORM[3].xy -= diff.xy;
- TRANSFORM[3].xy += rot * diff.xy;
+ float ang = orbit_amount * local_delta * Math_PI * 2.0;
+ // Not sure why the ParticlesMaterial code uses a clockwise rotation matrix,
+ // but we use -ang here to reproduce its behavior.
+ Transform2D rot = Transform2D(-ang, Vector2());
+ Vector2 rotv = rot.basis_xform(Vector2(diff.x, diff.y));
+ p.transform.origin -= Vector3(diff.x, diff.y, 0);
+ p.transform.origin += Vector3(rotv.x, rotv.y, 0);
}
}
-#endif
if (curve_parameters[PARAM_INITIAL_LINEAR_VELOCITY].is_valid()) {
p.velocity = p.velocity.normalized() * tex_linear_velocity;
}
@@ -910,11 +915,6 @@ void CPUParticles::_update_particle_data_buffer() {
PoolVector<Particle>::Read r = particles.read();
float *ptr = w.ptr();
- Transform un_transform;
- if (!local_coords) {
- un_transform = get_global_transform().affine_inverse();
- }
-
if (draw_order != DRAW_ORDER_INDEX) {
ow = particle_order.write();
order = ow.ptr();
@@ -932,7 +932,12 @@ void CPUParticles::_update_particle_data_buffer() {
Vector3 dir = c->get_global_transform().basis.get_axis(2); //far away to close
if (local_coords) {
- dir = un_transform.basis.xform(dir).normalized();
+
+ // will look different from Particles in editor as this is based on the camera in the scenetree
+ // and not the editor camera
+ dir = inv_emission_transform.xform(dir).normalized();
+ } else {
+ dir = dir.normalized();
}
SortArray<int, SortAxis> sorter;
@@ -950,7 +955,7 @@ void CPUParticles::_update_particle_data_buffer() {
Transform t = r[idx].transform;
if (!local_coords) {
- t = un_transform * t;
+ t = inv_emission_transform * t;
}
if (r[idx].active) {
@@ -1116,6 +1121,46 @@ void CPUParticles::_notification(int p_what) {
_update_particle_data_buffer();
}
}
+
+ if (p_what == NOTIFICATION_TRANSFORM_CHANGED) {
+
+ inv_emission_transform = get_global_transform().affine_inverse();
+
+ if (!local_coords) {
+
+ int pc = particles.size();
+
+ PoolVector<float>::Write w = particle_data.write();
+ PoolVector<Particle>::Read r = particles.read();
+ float *ptr = w.ptr();
+
+ for (int i = 0; i < pc; i++) {
+
+ Transform t = inv_emission_transform * r[i].transform;
+
+ if (r[i].active) {
+ ptr[0] = t.basis.elements[0][0];
+ ptr[1] = t.basis.elements[0][1];
+ ptr[2] = t.basis.elements[0][2];
+ ptr[3] = t.origin.x;
+ ptr[4] = t.basis.elements[1][0];
+ ptr[5] = t.basis.elements[1][1];
+ ptr[6] = t.basis.elements[1][2];
+ ptr[7] = t.origin.y;
+ ptr[8] = t.basis.elements[2][0];
+ ptr[9] = t.basis.elements[2][1];
+ ptr[10] = t.basis.elements[2][2];
+ ptr[11] = t.origin.z;
+ } else {
+ zeromem(ptr, sizeof(float) * 12);
+ }
+
+ ptr += 17;
+ }
+
+ can_update = true;
+ }
+ }
}
void CPUParticles::convert_from_particles(Node *p_particles) {
@@ -1171,7 +1216,7 @@ void CPUParticles::convert_from_particles(Node *p_particles) {
CONVERT_PARAM(PARAM_INITIAL_LINEAR_VELOCITY);
CONVERT_PARAM(PARAM_ANGULAR_VELOCITY);
- // CONVERT_PARAM(PARAM_ORBIT_VELOCITY);
+ CONVERT_PARAM(PARAM_ORBIT_VELOCITY);
CONVERT_PARAM(PARAM_LINEAR_ACCEL);
CONVERT_PARAM(PARAM_RADIAL_ACCEL);
CONVERT_PARAM(PARAM_TANGENTIAL_ACCEL);
@@ -1314,12 +1359,10 @@ void CPUParticles::_bind_methods() {
ADD_PROPERTYI(PropertyInfo(Variant::REAL, "angular_velocity", PROPERTY_HINT_RANGE, "-720,720,0.01,or_lesser,or_greater"), "set_param", "get_param", PARAM_ANGULAR_VELOCITY);
ADD_PROPERTYI(PropertyInfo(Variant::REAL, "angular_velocity_random", PROPERTY_HINT_RANGE, "0,1,0.01"), "set_param_randomness", "get_param_randomness", PARAM_ANGULAR_VELOCITY);
ADD_PROPERTYI(PropertyInfo(Variant::OBJECT, "angular_velocity_curve", PROPERTY_HINT_RESOURCE_TYPE, "Curve"), "set_param_curve", "get_param_curve", PARAM_ANGULAR_VELOCITY);
- /*
ADD_GROUP("Orbit Velocity", "orbit_");
ADD_PROPERTYI(PropertyInfo(Variant::REAL, "orbit_velocity", PROPERTY_HINT_RANGE, "-1000,1000,0.01,or_lesser,or_greater"), "set_param", "get_param", PARAM_ORBIT_VELOCITY);
ADD_PROPERTYI(PropertyInfo(Variant::REAL, "orbit_velocity_random", PROPERTY_HINT_RANGE, "0,1,0.01"), "set_param_randomness", "get_param_randomness", PARAM_ORBIT_VELOCITY);
ADD_PROPERTYI(PropertyInfo(Variant::OBJECT, "orbit_velocity_curve", PROPERTY_HINT_RESOURCE_TYPE, "Curve"), "set_param_curve", "get_param_curve", PARAM_ORBIT_VELOCITY);
-*/
ADD_GROUP("Linear Accel", "linear_");
ADD_PROPERTYI(PropertyInfo(Variant::REAL, "linear_accel", PROPERTY_HINT_RANGE, "-100,100,0.01,or_lesser,or_greater"), "set_param", "get_param", PARAM_LINEAR_ACCEL);
ADD_PROPERTYI(PropertyInfo(Variant::REAL, "linear_accel_random", PROPERTY_HINT_RANGE, "0,1,0.01"), "set_param_randomness", "get_param_randomness", PARAM_LINEAR_ACCEL);
@@ -1362,7 +1405,7 @@ void CPUParticles::_bind_methods() {
BIND_ENUM_CONSTANT(PARAM_INITIAL_LINEAR_VELOCITY);
BIND_ENUM_CONSTANT(PARAM_ANGULAR_VELOCITY);
- //BIND_ENUM_CONSTANT(PARAM_ORBIT_VELOCITY);
+ BIND_ENUM_CONSTANT(PARAM_ORBIT_VELOCITY);
BIND_ENUM_CONSTANT(PARAM_LINEAR_ACCEL);
BIND_ENUM_CONSTANT(PARAM_RADIAL_ACCEL);
BIND_ENUM_CONSTANT(PARAM_TANGENTIAL_ACCEL);
@@ -1376,6 +1419,7 @@ void CPUParticles::_bind_methods() {
BIND_ENUM_CONSTANT(FLAG_ALIGN_Y_TO_VELOCITY);
BIND_ENUM_CONSTANT(FLAG_ROTATE_Y);
+ BIND_ENUM_CONSTANT(FLAG_DISABLE_Z);
BIND_ENUM_CONSTANT(FLAG_MAX);
BIND_ENUM_CONSTANT(EMISSION_SHAPE_POINT);
@@ -1393,6 +1437,8 @@ CPUParticles::CPUParticles() {
cycle = 0;
redraw = false;
+ set_notify_transform(true);
+
multimesh = VisualServer::get_singleton()->multimesh_create();
VisualServer::get_singleton()->multimesh_set_visible_instances(multimesh, 0);
set_base(multimesh);
@@ -1414,7 +1460,7 @@ CPUParticles::CPUParticles() {
set_spread(45);
set_flatness(0);
set_param(PARAM_INITIAL_LINEAR_VELOCITY, 1);
- //set_param(PARAM_ORBIT_VELOCITY, 0);
+ set_param(PARAM_ORBIT_VELOCITY, 0);
set_param(PARAM_LINEAR_ACCEL, 0);
set_param(PARAM_RADIAL_ACCEL, 0);
set_param(PARAM_TANGENTIAL_ACCEL, 0);
generated by cgit v1.2.3 (git 2.25.1) at 2025-03-22 13:51:42 +0000