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This commit is contained in:
Darren Ranalli 2001-01-27 02:22:36 +00:00
parent 406472e592
commit 1432fb3408
10 changed files with 240 additions and 29 deletions
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5
panda/src/particlesystem/lineParticleRenderer.cxx
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@ -145,7 +145,6 @@ render(vector< PT(PhysicsObject) >& po_vector, int ttl_particles) {
int remaining_particles = ttl_particles;
int i;
int num_lines_drawn = 0;
Vertexf *cur_vert = &_vertex_array[0];
Colorf *cur_color = &_color_array[0];
@ -207,14 +206,12 @@ render(vector< PT(PhysicsObject) >& po_vector, int ttl_particles) {
*cur_color++ = head_color;
*cur_color++ = tail_color;
num_lines_drawn++;
remaining_particles--;
if (remaining_particles == 0)
break;
}
_line_primitive->set_num_prims(num_lines_drawn);
_line_primitive->set_num_prims(ttl_particles);
// done filling geomline node, now do the bb stuff

7
panda/src/particlesystem/particleSystem.I
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@ -27,8 +27,7 @@ render(void) {
INLINE void ParticleSystem::
set_pool_size(int size) {
_particle_pool_size = size;
resize_pool();
resize_pool(size);
}
////////////////////////////////////////////////////////////////////
@ -95,9 +94,11 @@ set_emitter(BaseParticleEmitter *e) {
INLINE void ParticleSystem::
set_factory(BaseParticleFactory *f) {
int pool_size = _particle_pool_size;
set_pool_size(0);
_factory = f;
clear_physics_objects();
resize_pool();
set_pool_size(pool_size);
}
////////////////////////////////////////////////////////////////////

217
panda/src/particlesystem/particleSystem.cxx
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@ -29,7 +29,7 @@
////////////////////////////////////////////////////////////////////
ParticleSystem::
ParticleSystem(int pool_size) :
Physical(pool_size, false), _particle_pool_size(pool_size)
Physical(pool_size, false)
{
_birth_rate = 0.5f;
_tics_since_birth = _birth_rate;
@ -42,6 +42,7 @@ ParticleSystem(int pool_size) :
_system_grows_older_flag = false;
_system_lifespan = 0.0f;
_i_was_spawned_flag = false;
_particle_pool_size = 0;
// just in case someone tries to do something that requires the
// use of an emitter, renderer, or factory before they've actually
@ -55,6 +56,8 @@ ParticleSystem(int pool_size) :
set_emitter(new SphereSurfaceEmitter);
set_renderer(new PointParticleRenderer);
set_factory(new PointParticleFactory);
set_pool_size(pool_size);
}
////////////////////////////////////////////////////////////////////
@ -68,8 +71,6 @@ ParticleSystem(const ParticleSystem& copy) :
_system_age(0.0f),
_template_system_flag(false)
{
_particle_pool_size = copy._particle_pool_size;
_birth_rate = copy._birth_rate;
_litter_size = copy._litter_size;
_litter_spread = copy._litter_spread;
@ -90,7 +91,7 @@ ParticleSystem(const ParticleSystem& copy) :
_system_lifespan = copy._system_lifespan;
_living_particles = 0;
resize_pool();
set_pool_size(copy._particle_pool_size);
}
////////////////////////////////////////////////////////////////////
@ -300,19 +301,20 @@ kill_particle(int pool_index) {
////////////////////////////////////////////////////////////////////
// Function : resize_pool
// Access : Private
// Description : Resizes the particle pool according to _particle_pool_size
// Description : Resizes the particle pool
////////////////////////////////////////////////////////////////////
#ifdef PSDEBUG
#define PARTICLE_SYSTEM_RESIZE_POOL_SENTRIES
#endif
void ParticleSystem::
resize_pool(void) {
resize_pool(int size) {
int i;
int delta = _particle_pool_size - _physics_objects.size();
int delta = size - _particle_pool_size;
int po_delta = _particle_pool_size - _physics_objects.size();
#ifdef PARTICLE_SYSTEM_RESIZE_POOL_SENTRIES
cout << "resizing particle pool from " << _physics_objects.size()
<< " to " << _particle_pool_size << endl;
cout << "resizing particle pool from " << _particle_pool_size
<< " to " << size << endl;
#endif
if (_factory.is_null()) {
@ -327,6 +329,51 @@ resize_pool(void) {
return;
}
_particle_pool_size = size;
// make sure the physics_objects array is OK
if (po_delta) {
if (po_delta > 0) {
for (i = 0; i < po_delta; i++)
{
int free_index = _physics_objects.size();
BaseParticle *new_particle = _factory->alloc_particle();
if (new_particle) {
_factory->populate_particle(new_particle);
_physics_objects.push_back(new_particle);
} else {
#ifdef PSDEBUG
cout << "Error allocating new particle" << endl;
_particle_pool_size--;
#endif
}
}
} else {
#ifdef PSDEBUG
cout << "physics_object array is too large??" << endl;
_particle_pool_size--;
#endif
po_delta = -po_delta;
for (i = 0; i < po_delta; i++) {
int delete_index = _physics_objects.size()-1;
BaseParticle *bp = (BaseParticle *) _physics_objects[delete_index].p();
if (bp->get_alive()) {
kill_particle(delete_index);
_free_particle_fifo.pop_back();
} else {
deque<int>::iterator i;
i = find(_free_particle_fifo.begin(), _free_particle_fifo.end(), delete_index);
if (i != _free_particle_fifo.end()) {
_free_particle_fifo.erase(i);
}
}
_physics_objects.pop_back();
}
}
}
// disregard no change
if (delta == 0)
return;
@ -414,6 +461,11 @@ update(float dt) {
BaseParticle *bp;
float age;
#ifdef PSSANITYCHECK
// check up on things
if (sanity_check()) return;
#endif
#ifdef PARTICLE_SYSTEM_UPDATE_SENTRIES
cout << "UPDATE: pool size: " << _particle_pool_size
<< ", live particles: " << _living_particles << endl;
@ -472,3 +524,150 @@ update(float dt) {
cout << "particle update complete" << endl;
#endif
}
#ifdef PSSANITYCHECK
//////////////////////////////////////////////////////////////////////
// Function : sanity_check
// Access : Private
// Description : Checks consistency of live particle count, free
// particle list, etc. returns 0 if everything is normal
//////////////////////////////////////////////////////////////////////
#ifndef NDEBUG
#define PSSCVERBOSE
#endif
class SC_valuenamepair : public ReferenceCount {
public:
int value;
char *name;
SC_valuenamepair(int v, char *s) : value(v), name(s) {}
};
// returns 0 if OK, # of errors if not OK
static int check_free_live_total_particles(vector<PT(SC_valuenamepair)> live_counts,
vector<PT(SC_valuenamepair)> dead_counts, vector<PT(SC_valuenamepair)> total_counts,
int print_all = 0) {
int val = 0;
int l, d, t;
for(l = 0; l < live_counts.size(); l++) {
for(d = 0; d < dead_counts.size(); d++) {
for(t = 0; t < total_counts.size(); t++) {
int live = live_counts[l]->value;
int dead = dead_counts[d]->value;
int total = total_counts[t]->value;
if ((live + dead) != total) {
#ifdef PSSCVERBOSE
cout << "free/live/total count: "
<< live_counts[l]->name << " (" << live << ") + "
<< dead_counts[d]->name << " (" << dead << ") = "
<< live + dead << ", != "
<< total_counts[t]->name << " (" << total << ")"
<< endl;
#endif
val++;
}
}
}
}
return val;
}
int ParticleSystem::
sanity_check() {
int result = 0;
int i;
BaseParticle *bp;
int pool_size;
///////////////////////////////////////////////////////////////////
// check pool size
if (_particle_pool_size != _physics_objects.size()) {
#ifdef PSSCVERBOSE
cout << "_particle_pool_size (" << _particle_pool_size
<< ") != particle array size (" << _physics_objects.size() << ")" << endl;
#endif
result++;
}
pool_size = min(_particle_pool_size, _physics_objects.size());
///////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////
// find out how many particles are REALLY alive and dead
int real_live_particle_count = 0;
int real_dead_particle_count = 0;
for (i = 0; i < _physics_objects.size(); i++) {
bp = (BaseParticle *) _physics_objects[i].p();
if (true == bp->get_alive()) {
real_live_particle_count++;
} else {
real_dead_particle_count++;
}
}
if (real_live_particle_count != _living_particles) {
#ifdef PSSCVERBOSE
cout << "manually counted live particle count (" << real_live_particle_count
<< ") != _living_particles (" << _living_particles << ")" << endl;
#endif
result++;
}
if (real_dead_particle_count != _free_particle_fifo.size()) {
#ifdef PSSCVERBOSE
cout << "manually counted dead particle count (" << real_dead_particle_count
<< ") != free particle fifo size (" << _free_particle_fifo.size() << ")" << endl;
#endif
result++;
}
///////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////
// check the free particle pool
for (i = 0; i < _free_particle_fifo.size(); i++) {
int index = _free_particle_fifo[i];
// check that we're in bounds
if (index >= pool_size) {
#ifdef PSSCVERBOSE
cout << "index from free particle fifo (" << index
<< ") is too large; pool size is " << pool_size << endl;
#endif
result++;
continue;
}
// check that the particle is indeed dead
bp = (BaseParticle *) _physics_objects[index].p();
if (true == bp->get_alive()) {
#ifdef PSSCVERBOSE
cout << "particle " << index << " in free fifo is not dead" << endl;
#endif
result++;
}
}
///////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////
// check the numbers of free particles, live particles, and total particles
vector<PT(SC_valuenamepair)> live_counts;
vector<PT(SC_valuenamepair)> dead_counts;
vector<PT(SC_valuenamepair)> total_counts;
live_counts.push_back(new SC_valuenamepair(real_live_particle_count, "real_live_particle_count"));
dead_counts.push_back(new SC_valuenamepair(real_dead_particle_count, "real_dead_particle_count"));
dead_counts.push_back(new SC_valuenamepair(_free_particle_fifo.size(), "free particle fifo size"));
total_counts.push_back(new SC_valuenamepair(_particle_pool_size, "_particle_pool_size"));
total_counts.push_back(new SC_valuenamepair(_physics_objects.size(), "actual particle pool size"));
result += check_free_live_total_particles(live_counts, dead_counts, total_counts);
///////////////////////////////////////////////////////////////////
return result;
}
#endif

17
panda/src/particlesystem/particleSystem.h
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@ -7,6 +7,10 @@
//#define PSDEBUG
#endif
#define PSSANITYCHECK
#define DYNAMIC_POOL_RESIZING
#ifndef PARTICLESYSTEM_H
#define PARTICLESYSTEM_H
@ -32,10 +36,19 @@ class ParticleSystemManager;
////////////////////////////////////////////////////////////////////
class EXPCL_PANDAPHYSICS ParticleSystem : public Physical {
private:
#ifdef PSSANITYCHECK
int sanity_check();
#endif
#ifndef DYNAMIC_POOL_RESIZING
INLINE void set_pool_size(int size);
#endif
bool birth_particle(void);
void kill_particle(int pool_index);
void birth_litter(void);
void resize_pool(void);
void resize_pool(int size);
deque< int > _free_particle_fifo;
@ -86,7 +99,9 @@ PUBLISHED:
~ParticleSystem(void);
// access/queries
#ifdef DYNAMIC_POOL_RESIZING
INLINE void set_pool_size(int size);
#endif
INLINE void set_birth_rate(float new_br);
INLINE void set_litter_size(int new_ls);
INLINE void set_litter_spread(int new_ls);

4
panda/src/particlesystem/pointParticleRenderer.cxx
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@ -18,7 +18,7 @@ PointParticleRenderer(ParticleRendererAlphaMode am,
PointParticleBlendType bt,
ParticleRendererBlendMethod bm,
const Colorf& sc, const Colorf& ec) :
BaseParticleRenderer(am),
BaseParticleRenderer(am),
_start_color(sc), _end_color(ec),
_point_size(point_size),
_blend_type(bt), _blend_method(bm)
@ -86,6 +86,8 @@ resize_pool(int new_size) {
_point_primitive->set_coords(_vertex_array, G_PER_VERTEX);
_point_primitive->set_colors(_color_array, G_PER_VERTEX);
init_geoms();
}
////////////////////////////////////////////////////////////////////

2
panda/src/particlesystem/sparkleParticleRenderer.cxx
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@ -119,6 +119,8 @@ resize_pool(int new_size) {
_line_primitive->set_colors(_color_array, G_PER_VERTEX);
_max_pool_size = new_size;
init_geoms();
}
////////////////////////////////////////////////////////////////////

2
panda/src/particlesystem/spriteParticleRenderer.cxx
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@ -125,6 +125,8 @@ resize_pool(int new_size) {
_sprite_primitive->set_x_texel_ratio(_x_texel_array, _x_bind);
_sprite_primitive->set_y_texel_ratio(_y_texel_array, _y_bind);
_sprite_primitive->set_thetas(_theta_array, _theta_bind);
init_geoms();
}
////////////////////////////////////////////////////////////////////

2
panda/src/physics/linearIntegrator.cxx
View File

@ -37,7 +37,7 @@ LinearIntegrator::
void LinearIntegrator::
integrate(Physical *physical, vector< PT(LinearForce) > &forces,
float dt) {
/*// darren, 2000.10.06
/* <-- darren, 2000.10.06
// cap dt so physics don't go flying off on lags
if (dt > _max_linear_dt)
dt = _max_linear_dt;

7
panda/src/physics/linearRandomForce.cxx
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@ -1,6 +1,6 @@
// Filename: LinearRandomForce.cxx
// Created by: charles (19Jun00)
//
//
////////////////////////////////////////////////////////////////////
#include "linearRandomForce.h"
@ -43,8 +43,5 @@ LinearRandomForce::
////////////////////////////////////////////////////////////////////
float LinearRandomForce::
bounded_rand(void) {
int val = rand() & 0x7fffffff;
float f_val = (float) val / (float) 0x7fffffff;
return f_val;
return ((float)rand() / (float)RAND_MAX);
}

6
panda/src/testbed/test_particles.cxx
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@ -91,7 +91,7 @@
/////////////////////////////////////////////////
// particle factory params
#define PARTICLE_FACTORY_LIFESPAN_BASE 10.0f
#define PARTICLE_FACTORY_LIFESPAN_BASE 5.0f
//#define PARTICLE_FACTORY_LIFESPAN_BASE 3.0f
//#define PARTICLE_FACTORY_LIFESPAN_SPREAD 1.0f
//#define PARTICLE_FACTORY_MASS_BASE 1.0f
@ -542,10 +542,6 @@ static void
event_more_particles(CPT_Event) {
static int index = 0;
static int sizes[] = {
999,
1000,
0,
0,
10,
999,
998,