/** Updates the physics simulation and handles all collisions.
* \param dt Time step.
*/
void Physics::update(float dt)
{
PROFILER_PUSH_CPU_MARKER("Physics", 0, 0, 0);
m_physics_loop_active = true;
// Bullet can report the same collision more than once (up to 4
// contact points per collision). Additionally, more than one internal
// substep might be taken, resulting in potentially even more
// duplicates. To handle this, all collisions (i.e. pair of objects)
// are stored in a vector, but only one entry per collision pair
// of objects.
m_all_collisions.clear();
// Maximum of three substeps. This will work for framerate down to
// 20 FPS (bullet default frequency is 60 HZ).
m_dynamics_world->stepSimulation(dt, 3);
// Now handle the actual collision. Note: flyables can not be removed
// inside of this loop, since the same flyables might hit more than one
// other object. So only a flag is set in the flyables, the actual
// clean up is then done later in the projectile manager.
std::vector<CollisionPair>::iterator p;
for(p=m_all_collisions.begin(); p!=m_all_collisions.end(); ++p)
{
// Kart-kart collision
// --------------------
if(p->getUserPointer(0)->is(UserPointer::UP_KART))
{
KartKartCollision(p->getUserPointer(0)->getPointerKart(),
p->getContactPointCS(0),
p->getUserPointer(1)->getPointerKart(),
p->getContactPointCS(1) );
continue;
} // if kart-kart collision
if(p->getUserPointer(0)->is(UserPointer::UP_PHYSICAL_OBJECT))
{
// Kart hits physical object
// -------------------------
PhysicalObject *obj = p->getUserPointer(0)
->getPointerPhysicalObject();
if(obj->isCrashReset())
{
AbstractKart *kart = p->getUserPointer(1)->getPointerKart();
new RescueAnimation(kart);
}
else if (obj->isExplodeKartObject())
{
AbstractKart *kart = p->getUserPointer(1)->getPointerKart();
ExplosionAnimation::create(kart);
}
else if (obj->isFlattenKartObject())
{
AbstractKart *kart = p->getUserPointer(1)->getPointerKart();
const KartProperties* kp = kart->getKartProperties();
kart->setSquash(kp->getSquashDuration(), kp->getSquashSlowdown());
}
else if(obj->isSoccerBall())
{
int kartId = p->getUserPointer(1)->getPointerKart()->getWorldKartId();
SoccerWorld* soccerWorld = (SoccerWorld*)World::getWorld();
soccerWorld->setLastKartTohitBall(kartId);
}
continue;
}
if(p->getUserPointer(0)->is(UserPointer::UP_ANIMATION))
{
// Kart hits animation
ThreeDAnimation *anim=p->getUserPointer(0)->getPointerAnimation();
if(anim->isCrashReset())
{
AbstractKart *kart = p->getUserPointer(1)->getPointerKart();
new RescueAnimation(kart);
}
else if (anim->isExplodeKartObject())
{
AbstractKart *kart = p->getUserPointer(1)->getPointerKart();
ExplosionAnimation::create(kart);
}
else if (anim->isFlattenKartObject())
{
AbstractKart *kart = p->getUserPointer(1)->getPointerKart();
const KartProperties* kp = kart->getKartProperties();
kart->setSquash(kp->getSquashDuration(), kp->getSquashSlowdown());
}
continue;
}
// now the first object must be a projectile
// =========================================
if(p->getUserPointer(1)->is(UserPointer::UP_TRACK))
{
// Projectile hits track
// ---------------------
p->getUserPointer(0)->getPointerFlyable()->hitTrack();
}
else if(p->getUserPointer(1)->is(UserPointer::UP_PHYSICAL_OBJECT))
{
// Projectile hits physical object
// -------------------------------
p->getUserPointer(0)->getPointerFlyable()
->hit(NULL, p->getUserPointer(1)->getPointerPhysicalObject());
PhysicalObject* obj = p->getUserPointer(1)->getPointerPhysicalObject();
if(obj->isSoccerBall())
{
int kartId = p->getUserPointer(0)->getPointerFlyable()->getOwnerId();
SoccerWorld* soccerWorld = (SoccerWorld*)World::getWorld();
soccerWorld->setLastKartTohitBall(kartId);
}
}
else if(p->getUserPointer(1)->is(UserPointer::UP_KART))
{
// Projectile hits kart
// --------------------
// Only explode a bowling ball if the target is
// not invulnerable
AbstractKart* target_kart = p->getUserPointer(1)->getPointerKart();
PowerupManager::PowerupType type = p->getUserPointer(0)->getPointerFlyable()->getType();
if(type != PowerupManager::POWERUP_BOWLING || !target_kart->isInvulnerable())
{
p->getUserPointer(0)->getPointerFlyable()->hit(target_kart);
if ( type ==PowerupManager::POWERUP_BOWLING )
((SingleAchievement *) AchievementsManager::get()->getActive()->getAchievement(2))->increase(1);
}
}
else
{
// Projectile hits projectile
// --------------------------
p->getUserPointer(0)->getPointerFlyable()->hit(NULL);
p->getUserPointer(1)->getPointerFlyable()->hit(NULL);
}
} // for all p in m_all_collisions
m_physics_loop_active = false;
// Now remove the karts that were removed while the above loop
// was active. Now we can safely call removeKart, since the loop
// is finished and m_physics_world_active is not set anymore.
for(unsigned int i=0; i<m_karts_to_delete.size(); i++)
removeKart(m_karts_to_delete[i]);
m_karts_to_delete.clear();
PROFILER_POP_CPU_MARKER();
} // update
/** Updates the physics simulation and handles all collisions.
* \param dt Time step.
*/
void Physics::update(float dt)
{
PROFILER_PUSH_CPU_MARKER("Physics", 0, 0, 0);
m_physics_loop_active = true;
// Bullet can report the same collision more than once (up to 4
// contact points per collision). Additionally, more than one internal
// substep might be taken, resulting in potentially even more
// duplicates. To handle this, all collisions (i.e. pair of objects)
// are stored in a vector, but only one entry per collision pair
// of objects.
m_all_collisions.clear();
// Maximum of three substeps. This will work for framerate down to
// 20 FPS (bullet default frequency is 60 HZ).
m_dynamics_world->stepSimulation(dt, 3);
// Now handle the actual collision. Note: flyables can not be removed
// inside of this loop, since the same flyables might hit more than one
// other object. So only a flag is set in the flyables, the actual
// clean up is then done later in the projectile manager.
std::vector<CollisionPair>::iterator p;
for(p=m_all_collisions.begin(); p!=m_all_collisions.end(); ++p)
{
// Kart-kart collision
// --------------------
if(p->getUserPointer(0)->is(UserPointer::UP_KART))
{
KartKartCollision(p->getUserPointer(0)->getPointerKart(),
p->getContactPointCS(0),
p->getUserPointer(1)->getPointerKart(),
p->getContactPointCS(1) );
Scripting::ScriptEngine* script_engine = World::getWorld()->getScriptEngine();
int kartid1 = p->getUserPointer(0)->getPointerKart()->getWorldKartId();
int kartid2 = p->getUserPointer(1)->getPointerKart()->getWorldKartId();
script_engine->runFunction("void onKartKartCollision(int, int)",
[=](asIScriptContext* ctx) {
ctx->SetArgDWord(0, kartid1);
ctx->SetArgDWord(1, kartid2);
});
continue;
} // if kart-kart collision
if(p->getUserPointer(0)->is(UserPointer::UP_PHYSICAL_OBJECT))
{
// Kart hits physical object
// -------------------------
Scripting::ScriptEngine* script_engine = World::getWorld()->getScriptEngine();
AbstractKart *kart = p->getUserPointer(1)->getPointerKart();
int kartId = kart->getWorldKartId();
PhysicalObject* obj = p->getUserPointer(0)->getPointerPhysicalObject();
std::string obj_id = obj->getID();
std::string scripting_function = obj->getOnKartCollisionFunction();
if (scripting_function.size() > 0)
{
script_engine->runFunction("void " + scripting_function + "(int, const string)",
[&](asIScriptContext* ctx) {
ctx->SetArgDWord(0, kartId);
ctx->SetArgObject(1, &obj_id);
});
}
if (obj->isCrashReset())
{
new RescueAnimation(kart);
}
else if (obj->isExplodeKartObject())
{
ExplosionAnimation::create(kart);
}
else if (obj->isFlattenKartObject())
{
const KartProperties* kp = kart->getKartProperties();
kart->setSquash(kp->getSquashDuration() * kart->getPlayerDifficulty()->getSquashDuration(),
kp->getSquashSlowdown() * kart->getPlayerDifficulty()->getSquashSlowdown());
}
else if(obj->isSoccerBall() &&
race_manager->getMinorMode() == RaceManager::MINOR_MODE_SOCCER)
{
SoccerWorld* soccerWorld = (SoccerWorld*)World::getWorld();
soccerWorld->setLastKartTohitBall(kartId);
}
continue;
}
if (p->getUserPointer(0)->is(UserPointer::UP_ANIMATION))
{
// Kart hits animation
ThreeDAnimation *anim=p->getUserPointer(0)->getPointerAnimation();
if(anim->isCrashReset())
{
AbstractKart *kart = p->getUserPointer(1)->getPointerKart();
new RescueAnimation(kart);
}
else if (anim->isExplodeKartObject())
{
AbstractKart *kart = p->getUserPointer(1)->getPointerKart();
ExplosionAnimation::create(kart);
}
else if (anim->isFlattenKartObject())
{
AbstractKart *kart = p->getUserPointer(1)->getPointerKart();
const KartProperties* kp = kart->getKartProperties();
kart->setSquash(kp->getSquashDuration() * kart->getPlayerDifficulty()->getSquashDuration(),
kp->getSquashSlowdown() * kart->getPlayerDifficulty()->getSquashSlowdown());
}
continue;
}
// now the first object must be a projectile
// =========================================
if(p->getUserPointer(1)->is(UserPointer::UP_TRACK))
{
// Projectile hits track
// ---------------------
p->getUserPointer(0)->getPointerFlyable()->hitTrack();
}
else if(p->getUserPointer(1)->is(UserPointer::UP_PHYSICAL_OBJECT))
{
// Projectile hits physical object
// -------------------------------
Scripting::ScriptEngine* script_engine = World::getWorld()->getScriptEngine();
Flyable* flyable = p->getUserPointer(0)->getPointerFlyable();
PhysicalObject* obj = p->getUserPointer(1)->getPointerPhysicalObject();
std::string obj_id = obj->getID();
std::string scripting_function = obj->getOnItemCollisionFunction();
if (scripting_function.size() > 0)
{
script_engine->runFunction("void " + scripting_function + "(int, int, const string)",
[&](asIScriptContext* ctx) {
ctx->SetArgDWord(0, (int)flyable->getType());
ctx->SetArgDWord(1, flyable->getOwnerId());
ctx->SetArgObject(2, &obj_id);
});
}
flyable->hit(NULL, obj);
if (obj->isSoccerBall() &&
race_manager->getMinorMode() == RaceManager::MINOR_MODE_SOCCER)
{
int kartId = p->getUserPointer(0)->getPointerFlyable()->getOwnerId();
SoccerWorld* soccerWorld = (SoccerWorld*)World::getWorld();
soccerWorld->setLastKartTohitBall(kartId);
}
}
else if(p->getUserPointer(1)->is(UserPointer::UP_KART))
{
// Projectile hits kart
// --------------------
// Only explode a bowling ball if the target is
// not invulnerable
AbstractKart* target_kart = p->getUserPointer(1)->getPointerKart();
PowerupManager::PowerupType type = p->getUserPointer(0)->getPointerFlyable()->getType();
if(type != PowerupManager::POWERUP_BOWLING || !target_kart->isInvulnerable())
{
Flyable *f = p->getUserPointer(0)->getPointerFlyable();
f->hit(target_kart);
// Check for achievements
AbstractKart * kart = World::getWorld()->getKart(f->getOwnerId());
PlayerController *c = dynamic_cast<PlayerController*>(kart->getController());
// Check that it's not a kart hitting itself (this can
// happen at the time a flyable is shot - release too close
// to the kart, and it's the current player. At this stage
// only the current player can get achievements.
if (target_kart != kart && c &&
c->getPlayer()->getConstProfile() == PlayerManager::getCurrentPlayer())
{
// Compare the current value of hits with the 'hit' goal value
// (otherwise it would be compared with the kart id goal value,
// which doesn't exist.
PlayerManager::increaseAchievement(AchievementInfo::ACHIEVE_ARCH_ENEMY,
target_kart->getIdent(), 1, "hit");
if (type == PowerupManager::POWERUP_BOWLING)
{
PlayerManager::increaseAchievement(AchievementInfo::ACHIEVE_STRIKE,
"ball", 1);
} // is bowling ball
} // if target_kart != kart && is a player kart and is current player
}
}
else
{
// Projectile hits projectile
// --------------------------
p->getUserPointer(0)->getPointerFlyable()->hit(NULL);
p->getUserPointer(1)->getPointerFlyable()->hit(NULL);
}
} // for all p in m_all_collisions
m_physics_loop_active = false;
// Now remove the karts that were removed while the above loop
// was active. Now we can safely call removeKart, since the loop
// is finished and m_physics_world_active is not set anymore.
for(unsigned int i=0; i<m_karts_to_delete.size(); i++)
removeKart(m_karts_to_delete[i]);
m_karts_to_delete.clear();
PROFILER_POP_CPU_MARKER();
} // update