void randgaussvector(RealVector* v)
{
for(int i = 0; i < N; i++){
v->Crd[i] = randgauss() / sqrt((double)N);
v->Norm2 += v->Crd[i] * v->Crd[i];
}
}
void randsphericalvector(RealVector* v)
{
for(int i = 0; i < N; i++){
v->Crd[i] = randgauss();
v->Norm2 += v->Crd[i] * v->Crd[i];
}
double n = sqrt(v->Norm2);
for(int i = 0; i < N; i++){
v->Crd[i] = v->Crd[i] / n;
}
v->Norm2 = 1;
}
void createExplosion(vec pos)
{
playSound(explosion, pos, 20,randgauss(1,.1),3000);
// deal damage to nearby objects
// apply explosion force to objects
for (int i = 0; i < activeObjects.size(); i++) {
GameObject* obj = activeObjects[i];
if (obj->isEnemy || obj == p) {
float dist = (obj->pos - pos).getLength();
if (dist < 250) {
float damage = (250 - dist)*.7;
float force = damage * .8;
if (force > 25) force = 25;
//say("F: " << force);
obj->pos += vec(force, 0).rotated((obj->pos - pos).getAngle());
if (obj == p) damage *= .4; // decrease explosion damage for player
obj->hurt(damage);
}
}
}
// create particles
for (int i = 0; i < 10; i++) {
vec smokeVel = randVec(1, 1);
Color smokeColor = hsvtorgb(0, 0, randnum(0, 1));
Particle* p = new Particle(pos + smokeVel*randnum(80, 135),
smokeVel*randnum(0, 1) + randVec(0.1, 1),
randint(100, 200),
randnum(0.8, 1.2),
randnum(2, 3),
Color(smokeColor.r, smokeColor.g, smokeColor.b, 80),
Color(smokeColor.r, smokeColor.g, smokeColor.b, 0),
randgauss(-.01,.002),
0.998);
p->setTexture(blob);
p->angle = randnum(0, 360);
p->angVel = randgauss(0, 1);
p->layer = 1;
//p->blendMode = BlendAdd;
}
Color flashColor = hsvtorgb(randnum(30, 60), randnum(0.5, 1), randnum(0.5, 1));
for (int i = 0; i < 10; i++) {
Particle* p = new Particle(pos,
randVec(0, 1),
randint(4, 7), 0.1, randnum(2.5, 4.5),
Color(flashColor.r, flashColor.g, flashColor.b, 255),
Color(flashColor.r, flashColor.g, flashColor.b, 0));
p->setTexture(blob);
p->blendMode = BlendAdd;
p->layer = 1;
}
// break terrain
float playerDist = (p->pos - pos).getLength();
screenShake += 500.f / playerDist;
if (screenShake > 5) screenShake = 5;
destroyTerrainCircle(pos, randgauss(100, 5));
}