void Effect::update(unsigned int elapsedMillis) {
switch (effectType_) {
case TYPE_SOURCE_TO_TARGET: {
boost::shared_ptr<IngameObject> targetObj = targetObject_.lock();
boost::shared_ptr<IngameObject> sourceObj = sourceObject_.lock();
if (!targetObj || !sourceObj) {
expired_ = true;
break;
}
if (exploding_) {
if (getLocation() != targetObj->getLocation()) {
setLocation(targetObj->getLocation());
}
} else {
// interpolate
// movement is not exactly like osi, but close enough
float timeFactor = elapsedMillis / 1000.f * speedPerSecond_;
CL_Vec3f targetLoc = targetObj->getLocation();
CL_Vec3f selfLoc = getLocation();
CL_Vec3f totalDistance = targetLoc - selfLoc;
if (totalDistance.length() <= timeFactor) {
// reached target
setLocation(targetLoc);
lifetimeMillisLeft_ = -1;
fixedAngle_ = true;
currentAngle_ = 0;
shouldExpireMoving_ = true;
} else {
CL_Vec3f step = totalDistance.normalize() * timeFactor;
selfLoc += step;
setLocation(selfLoc);
// does not expire while moving
shouldExpireMoving_ = false;
if (!fixedAngle_) {
// this has to be in screen coordinates
totalDistance -= step;
float screenDiffX = (totalDistance.x - totalDistance.y) * 44;
float screenDiffY = (totalDistance.x + totalDistance.y) * 44 + totalDistance.z * 4;
currentAngle_ = atan2(screenDiffY, screenDiffX) + 3.14159265;;
}
}
}
break;
}
case TYPE_LIGHTNING:
break;
case TYPE_AT_POSITION:
break;
case TYPE_AT_SOURCE: {
boost::shared_ptr<IngameObject> obj = sourceObject_.lock();
if (!obj) {
expired_ = true;
} else {
if (getLocation() != obj->getLocation()) {
setLocation(obj->getLocation());
}
}
break;
}
}
// check expire time
lifetimeMillisLeft_ -= elapsedMillis;
if (shouldExpireMoving_) {
if (shouldExplode_) {
exploding_ = true;
shouldExplode_ = false;
lifetimeMillisLeft_ = startExplosion();
}
if (shouldExpireTimeout()) {
expired_ = true;
}
}
}
void Bomb::moveToCollisionPoint(float lamda)
{
currentPosition = oldPosition + velocity*lamda;
startExplosion();
setLifeStatus(false);
}
