CCActionInterval* CCBezierBy::reverse(void)
{
ccBezierConfig r;
r.endPosition = ccpNeg(m_sConfig.endPosition);
r.controlPoint_1 = ccpAdd(m_sConfig.controlPoint_2, ccpNeg(m_sConfig.endPosition));
r.controlPoint_2 = ccpAdd(m_sConfig.controlPoint_1, ccpNeg(m_sConfig.endPosition));
CCBezierBy *pAction = CCBezierBy::actionWithDuration(m_fDuration, r);
return pAction;
}
BWActionInterval* BWBezierBy::reverse(void)
{
BWBezierConfig r;
r.endPosition = ccpNeg(m_sConfig.endPosition);
r.controlPoint_1 = ccpAdd(m_sConfig.controlPoint_2, ccpNeg(m_sConfig.endPosition));
r.controlPoint_2 = ccpAdd(m_sConfig.controlPoint_1, ccpNeg(m_sConfig.endPosition));
BWBezierBy *pAction = BWBezierBy::create(m_fDuration, r);
return pAction;
}
/**
* 设置位置，必须先设置场景代理
*/
void
MCCamera::locate()
{
if (sceneDelegate_) {
sceneDelegate_->moveSceneToLocation(ccpNeg(viewport_.origin));
}
}
/**
* 聚焦到某人身上，必须先设置场景代理
*
* 聚焦：
* 1.假定人物位于屏幕中间
* 2.消除地图滚动的偏移
*/
void
MCCamera::focus(MCRole *aRole)
{
if (sceneDelegate_) {
CCSize winSize = CCDirectorGetWindowsSize();
MCScene *scene = sceneDelegate_->getScene();
CCTMXTiledMap *map = sceneDelegate_->getScene()->getMap();
CCSize sceneSize = scene->getSceneSize();
CCPoint mapOffset = map->getPosition();
CCPoint rolePosition = ccpSub(aRole->getEntity()->getPosition(), mapOffset);
CCPoint expectedViewportOrigin = ccp(rolePosition.x - winSize.width / 2,
rolePosition.y - winSize.height / 2);
/* 清除偏移 */
/* 基于地图 */
float viewportLeft = expectedViewportOrigin.x;
float viewportRight = expectedViewportOrigin.x + viewport_.size.width;
float viewportTop = expectedViewportOrigin.y + viewport_.size.height;
float viewportBottom = expectedViewportOrigin.y;
if (sceneSize.width < winSize.width) {
sceneSize.width = winSize.width;
}
if (sceneSize.height < winSize.height) {
sceneSize.height = winSize.height;
}
if (viewportLeft < 0) {
expectedViewportOrigin.x -= viewportLeft;
} else if (viewportRight > sceneSize.width) {
expectedViewportOrigin.x -= (viewportRight - sceneSize.width);
}
if (viewportTop > sceneSize.height) {
expectedViewportOrigin.y -= (viewportTop - sceneSize.height);
} else if (viewportBottom < 0) {
expectedViewportOrigin.y -= viewportBottom;
}
viewport_.origin = expectedViewportOrigin;
sceneDelegate_->moveSceneToLocation(ccpNeg(expectedViewportOrigin));
}
}
/**
* 重置位置，必须先设置场景代理
*/
void
MCCamera::restore()
{
viewport_.origin = ccpNeg(location_);
}
