AniSimpleFastSwipeGestureRecognizer.cpp
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//
// AniFastSwipeGestureRecognizer.cpp
// SteveMaggieCpp
//
// Created by Katarzyna Kalinowska-Górska on 19.05.2017.
//
//
#include <stdio.h>
#include "AniSimpleFastSwipeGestureRecognizer.h"
#include "AniMathUtils.h"
/*Detect fast swipe with the finger in one of the four basic directions */
AniSimpleFastSwipeGestureRecognizer::AniSimpleFastSwipeGestureRecognizer() : AniGestureRecognizer({cocos2d::EventListener::Type::TOUCH_ONE_BY_ONE})
{
_onFastSwipeDetected = [](std::string direction, cocos2d::Point startLocation, cocos2d::Point endLocation, float velocity){
// cocos2d::log("AniFastSwipeGestureRecognizer: onFastSwipeDetected with direction "+direction);
};
}
void AniSimpleFastSwipeGestureRecognizer::setOnFastSwipeDetectedCallback(std::function<void(std::string direction, cocos2d::Point startLocation, cocos2d::Point endLocation, float velocity)> callback)
{
_onFastSwipeDetected = callback;
}
AniSimpleFastSwipeGestureRecognizer::~AniSimpleFastSwipeGestureRecognizer(){
}
///////////////////////////////////////////////////////////////////////////
// internal
///////////////////////////////////////////////////////////////////////////
// touch handlers
bool AniSimpleFastSwipeGestureRecognizer::onTouchBegan(cocos2d::Touch* touch, cocos2d::Event* event)
{
_startTime = cocos2d::utils::getTimeInMilliseconds()/1000.0;
_startLocation = touch->getLocation();
return true;
}
void AniSimpleFastSwipeGestureRecognizer::onTouchEnded(cocos2d::Touch* touch, cocos2d::Event* event)
{
auto currentTime = cocos2d::utils::getTimeInMilliseconds()/1000.0;
auto timeDiff = (currentTime - _startTime);
auto newLocation = touch->getLocation();
auto xVel = (newLocation.x - _startLocation.x) / timeDiff;
auto yVel = (newLocation.y - _startLocation.y) / timeDiff;
auto absXVel = std::abs(xVel);
auto absYVel = std::abs(yVel);
if(absXVel >= MIN_SWIPE_VELOCITY && absXVel >= absYVel){
auto direction = AniMathUtils::signum(xVel) < 0 ? DIRECTION_LEFT : DIRECTION_RIGHT;
_onFastSwipeDetected(direction, _startLocation, newLocation, absXVel);
} else if(absYVel >= MIN_SWIPE_VELOCITY){
auto direction = AniMathUtils::signum(yVel) < 0 ? DIRECTION_DOWN : DIRECTION_UP;
_onFastSwipeDetected(direction, _startLocation, newLocation, absYVel);
}
}