void L_ShootingEffect::howto_emit_particle(void)
{
static L_REAL radian_t;
static L_REAL current_speed_dis;
static L_REAL width_t;
static L_REAL x_shift;
static L_REAL y_shift;
static int j;
shooting_angle_cache = shooting_vector.get_angle();
for(j=0;j<particle_per_period;j++)
{
// === shooting interval(angle) ===
if(angle_interval == 0)
radian_t =0;
else
radian_t = ( L_RAND_REAL_1() - 0.5f ) * angle_interval;
// === end ===
// === speed distortion ===
if(speed_dis == 0)
current_speed_dis = 0;
else
current_speed_dis = ( L_RAND_REAL_1()*2.0f - 1.0f ) * speed_dis;
// === end ===
// === shooting interval(width) ===
if(width_interval == 0)
{
x_shift = 0;
y_shift = 0;
}
else
{
width_t = ( L_RAND_REAL_1() - 0.5f ) * width_interval;
x_shift = width_t * L_SIN(shooting_angle_cache);
y_shift = width_t * L_COS(shooting_angle_cache);
}
// === end ===
L_Vector v_t = shooting_vector;
v_t.set2(shooting_magnitude_cache+current_speed_dis, shooting_angle_cache+radian_t);
create_particle(x_pos+x_shift, y_pos+y_shift, &v_t);
}
}
void L_ExplosionEffect::howto_emit_particle(void)
{
static L_REAL radian;
static int num_particles;
static int j;
num_particles = min_particles + rand() % (max_particles - min_particles + 1);
for( j=0; j<num_particles; j++ )
{
radian = L_RAND_REAL_2()*L_2PI;
static L_REAL current_speed_dis;
if(speed_dis == 0)
current_speed_dis = 0;
else
current_speed_dis = ( L_RAND_REAL_1()*2.0f - 1.0f ) * speed_dis;
CL_Vec2f v_t;
linear_set2(v_t, explosion_level+current_speed_dis, radian );
create_particle(x_pos,y_pos,&v_t);
}
}
void L_ParticleEffect::create_particle(L_REAL in_x, L_REAL in_y, L_Vector* vec_t)
{
int chosen = choose_particle();
L_Particle* par_new;
L_NEW_PAR( par_new, *fl_particle[chosen] );
L_Vector vec_t2;
if(addit_vector_enabled == true)
{
if(vec_t != NULL)
vec_t2 = addit_vector + *vec_t;
else
vec_t2 = addit_vector;
}
else
{
if(vec_t != NULL)
vec_t2 = *vec_t;
}
par_new->set_velocity(vec_t2);
if(follow_shooting)
{
par_new->set_rotation(vec_t->get_angle());
}
else if(rotation_distortion != 0)
{
par_new->set_rotation2((L_RAND_REAL_1()-0.5f)*rotation_distortion);
}
if(size_distortion != 0)
{
par_new->set_size( par_new->get_ref_size()+rand_size() );
}
if(life_distortion != 0)
{
int distort = rand() % life_distortion + 1;
if(rand() % 2 == 0)
distort = -distort;
par_new->set_life(par_new->get_remaininig_life()+distort);
}
par_new->x_pos = in_x;
par_new->y_pos = in_y;
par_new->initialize();
//add to list
particle_list.push_back(par_new);
}
L_REAL L_ParticleEffect::rand_size(void)
{
L_REAL current_size_dis = L_RAND_REAL_1() * size_distortion;
if( rand()%2 == 0 )
current_size_dis = -current_size_dis;
return current_size_dis;
}
int L_ParticleEffect::choose_particle(void)
{
L_REAL dice = L_RAND_REAL_1();
L_REAL slider = 0;
int i;
for( i=0; i<num_particle_type; i++ )
{
slider += particle_prob[i];
if( dice <= slider )
break;
}
return i;
}
