BOOST_FOREACH(Asteroid& Asteroid, m_asteroids) {
b2Body* body = Asteroid.GetBody();
b2World* world = body->GetWorld();
world->DestroyBody(body);
}
void MainScene::CreateAsteroids()
{
Vec2 center(0,0);
const string names[] =
{
"Asteroid_01",
"Asteroid_02",
"Asteroid_03",
"Asteroid_04",
"Asteroid_05",
"Asteroid_06",
"Asteroid_07",
// "Asteroid_08",
};
const int MAX_NAMES = sizeof(names)/sizeof(names[0]);
typedef struct
{
float32 radius;
uint32 asteroids;
} RING_DATA_T;
RING_DATA_T ringData[] =
{
{1, 1},
{9, 3},
{17, 7},
{25, 13},
{35, 20},
};
const int MAX_RINGS = sizeof(ringData)/sizeof(ringData[0]);
float32 angleRads = 0;
uint32 nameIdx = 0;
for(int ring = 0; ring < MAX_RINGS; ring++)
{
// Inner ring asteroids
float32 targetRadius = ringData[ring].radius;
uint32 asteroids = ringData[ring].asteroids;
for(int idx = 0; idx < asteroids; idx++)
{
Vec2 offset = Vec2::FromPolar(targetRadius, angleRads);
Vec2 position = center + offset;
Asteroid* asteroid = new Asteroid();
asteroid->Create(*_world,
names[nameIdx%MAX_NAMES],
position,
9.0 + RanNumGen::RandFloat(-1.0, 1.0));
asteroid->GetBody()->SetDebugDraw(false);
EntityManager::Instance().Register(asteroid);
_asteroids.push_back(asteroid);
// All asteroids have a distance joint to the anchor
// Now create the joint.
b2RopeJointDef jointDef;
jointDef.bodyA = _anchor;
jointDef.bodyB = asteroid->GetBody();
jointDef.maxLength = b2Distance(jointDef.bodyA->GetPosition(), jointDef.bodyB->GetPosition());
jointDef.collideConnected = true;
_world->CreateJoint(&jointDef);
nameIdx++;
angleRads += (2*M_PI)/asteroids + RanNumGen::RandFloat(-M_PI/(12*asteroids), M_PI/(12*asteroids));
}
}
for(int idx = 0;idx < _asteroids.size(); idx++)
{
_asteroidLayer->AddSprite(_asteroids[idx]->GetSprite());
EntityScheduler::Instance().Register(_asteroids[idx]);
// Give it at least one update to start.
_asteroids[idx]->Update();
}
}