void Animation::Update(float dt)
{
mTimer += dt;
if (mTimer >= mLength&&mLooping)
{
mDone = true;
Restart(); // always looping for now
}
int count = mMainline->GetKeyframeCount();
Key *keyframe = mMainline->GetKeyframe(mCurrKeyframe);
float currTime = keyframe->GetTime();
Key *keyframeNext = NULL;
int next = mCurrKeyframe+1;
if (next > count-1&&mLooping) // looping
next = 0;
keyframeNext = mMainline->GetKeyframe(next);
if (keyframeNext)
{
float nextTime = keyframeNext->GetTime();
if (next == 0)
nextTime = mLength;
if (mTimer >= nextTime)
{
mCurrKeyframe = next;
keyframe = keyframeNext;
currTime = keyframe->GetTime();
next = mCurrKeyframe+1;
if (next > count-1&&mLooping) // looping
next = 0;
keyframeNext = mMainline->GetKeyframe(next);
if (keyframeNext == NULL)
return;
nextTime = keyframeNext->GetTime();
if (next == 0)
nextTime = mLength;
}
float t = (mTimer-currTime)/(nextTime-currTime);
int count = keyframe->GetObjectRefCount();
for (int i=0;i<count;i++)
{
ObjectRef *ref = keyframe->GetObjectRef(i);
ObjectRef *refNext = keyframeNext->GetObjectRef(i);
if (ref && refNext)
{
Key *keyRef = mTimelines[ref->timeline]->GetKeyframe(ref->key);
Object *obj = keyRef->GetObject(0); // should be only 1 object
Key *keyRefNext = mTimelines[refNext->timeline]->GetKeyframe(refNext->key);
Object *objNext = keyRefNext->GetObject(0);
float x = obj->x+(objNext->x-obj->x)*t;
float y = obj->y+(objNext->y-obj->y)*t;
float angle = objNext->angle-obj->angle;
if (keyRef->IsSpinCounterClockwise())
{
if (angle < 0)
angle = (objNext->angle+360)-obj->angle;
}
else
{
if (angle > 0)
{
angle = (objNext->angle-360)-obj->angle;
}
}
if (ref->timeline != refNext->timeline)
t = 0;
angle = obj->angle+(angle)*t;
if (angle >= 360)
angle -= 360;
float px = obj->pivot_x+(objNext->pivot_x-obj->pivot_x)*t;
float py = obj->pivot_y+(objNext->pivot_y-obj->pivot_y)*t;
CCPoint newPos = ccp(mPosition.x+x, mPosition.y+y);
obj->sprite->setPosition(newPos);
obj->sprite->setRotation(-angle);
obj->sprite->setAnchorPoint(ccp(px, py));
}
}
}
}
void Animation::Init(TiXmlNode *node, CCSpriterX *animator)
{
int intValue;
float floatValue;
TiXmlElement *element = node->ToElement();
if (element)
{
if (element->QueryIntAttribute("id", &intValue) == TIXML_SUCCESS)
mId = intValue;
mName = element->Attribute("name");
if (element->QueryFloatAttribute("length", &floatValue) == TIXML_SUCCESS)
mLength = floatValue/1000.0f; // was in milliseconds, convert to seconds instead
const char *looping = element->Attribute("looping"); // was set to "false" in alpha, but in fact looping all the time
mLooping = true;
for (TiXmlNode* lineNode = node->FirstChild(); lineNode; lineNode = lineNode->NextSibling())
{
element = lineNode->ToElement();
const char *tabLine = element->Value();
if (strcmp(tabLine, "mainline")==0) // 1 mainline only
{
mMainline = new Timeline();
mMainline->Init(lineNode, animator);
}
else if (strcmp(tabLine, "timeline")==0)
{
Timeline *timeline = new Timeline();
timeline->Init(lineNode, animator);
mTimelines.push_back(timeline);
}
}
{
int count = mMainline->GetKeyframeCount();
Key *keyframe = mMainline->GetKeyframe(mCurrKeyframe);
float currTime = keyframe->GetTime();
Key *keyframeNext = NULL;
int next = mCurrKeyframe+1;
if (next > count-1)
next = 0;
keyframeNext = mMainline->GetKeyframe(next);
if (keyframeNext)
{
float nextTime = keyframeNext->GetTime();
if (next == 0)
nextTime = mLength;
if (mTimer >= nextTime)
{
mCurrKeyframe = next;
keyframe = keyframeNext;
currTime = keyframe->GetTime();
next = mCurrKeyframe+1;
if (next > count-1&&mLooping) // looping
next = 0;
keyframeNext = mMainline->GetKeyframe(next);
if (keyframeNext == NULL)
return;
nextTime = keyframeNext->GetTime();
if (next == 0)
nextTime = mLength;
}
float t = (mTimer-currTime)/(nextTime-currTime);
int count = keyframe->GetObjectRefCount();
for (int i=0;i<count;i++)
{
ObjectRef *ref = keyframe->GetObjectRef(i);
ObjectRef *refNext = keyframeNext->GetObjectRef(i);
if (ref && refNext)
{
Key *keyRef = mTimelines[ref->timeline]->GetKeyframe(ref->key);
Object *obj = keyRef->GetObject(0); // should be only 1 object
Key *keyRefNext = mTimelines[refNext->timeline]->GetKeyframe(refNext->key);
Object *objNext = keyRefNext->GetObject(0);
float x = obj->x+(objNext->x-obj->x)*t;
float y = obj->y+(objNext->y-obj->y)*t;
float angle = objNext->angle-obj->angle;
if (keyRef->IsSpinCounterClockwise())
{
if (angle < 0)
angle = (objNext->angle+360)-obj->angle;
}
else
{
if (angle > 0)
{
angle = (objNext->angle-360)-obj->angle;
}
}
if (ref->timeline != refNext->timeline)
t = 0;
angle = obj->angle+(angle)*t;
if (angle >= 360)
angle -= 360;
float px = obj->pivot_x+(objNext->pivot_x-obj->pivot_x)*t;
float py = obj->pivot_y+(objNext->pivot_y-obj->pivot_y)*t;
CCPoint newPos = ccp(mPosition.x+x, mPosition.y+y);
obj->sprite->setPosition(newPos);
obj->sprite->setRotation(-angle);
obj->sprite->setAnchorPoint(ccp(px, py));
}
}
}
}
}
}