AniFastSwipeGestureRecognizer.cpp
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//
// AniFastSwipeGestureRecognizer.cpp
// SteveMaggieCpp
//
// Created by Katarzyna Kalinowska-Górska on 19.05.2017.
//
//
#include <stdio.h>
#include "AniFastSwipeGestureRecognizer.h"
#include "AniMathUtils.h"
#include "AniScalingUtils.h"
/*Detect fast swipe with the finger in one of the four basic directions */
AniFastSwipeGestureRecognizer::AniFastSwipeGestureRecognizer() : AniGestureRecognizer({cocos2d::EventListener::Type::TOUCH_ONE_BY_ONE})
{
_onFastSwipeDetected = [](AniGestureRecognizerDirection directionX, AniGestureRecognizerDirection directionY, cocos2d::Point startLocation, cocos2d::Point endLocation, float speedX, float speedY){
// cocos2d::log("AniFastSwipeGestureRecognizer: onFastSwipeDetected with direction "+direction);
};
}
void AniFastSwipeGestureRecognizer::setOnFastSwipeDetectedCallback(std::function<void(AniGestureRecognizerDirection directionX, AniGestureRecognizerDirection directionY, cocos2d::Point startLocation, cocos2d::Point endLocation, float speedX, float speedY)> callback)
{
_onFastSwipeDetected = callback;
}
AniFastSwipeGestureRecognizer::~AniFastSwipeGestureRecognizer(){
}
///////////////////////////////////////////////////////////////////////////
// internal
///////////////////////////////////////////////////////////////////////////
// touch handlers
bool AniFastSwipeGestureRecognizer::onTouchBegan(cocos2d::Touch* touch, cocos2d::Event* event)
{
_startTime = cocos2d::utils::getTimeInMilliseconds()/1000.0;
_startLocation = touch->getLocation();
return true;
}
void AniFastSwipeGestureRecognizer::onTouchEnded(cocos2d::Touch* touch, cocos2d::Event* event)
{
auto currentTime = cocos2d::utils::getTimeInMilliseconds()/1000.0;
auto timeDiff = (currentTime - _startTime);
auto newLocation = touch->getLocation();
auto dX = newLocation.x - _startLocation.x;
auto dY = newLocation.y - _startLocation.y;
auto minDelta = m_minBaseDeltaToActivate*AniScalingUtils::scaleAspectFitToDesignIpadProSize();
if(std::abs(dX) < minDelta && std::abs(dY) < minDelta){
// cocos2d::log("returning because dx = %f, dy = %f vs minD = %f\n", dX, dY, minDelta);
return;
}
auto xVel = dX / timeDiff;
auto yVel = dY / timeDiff;
auto absXSpeed = std::abs(xVel);
auto absYSpeed = std::abs(yVel);
if(absXSpeed >= m_minBaseSwipeSpeedToActivate*AniScalingUtils::scaleAspectFitToDesignIpadProSize() || absYSpeed >= m_minBaseSwipeSpeedToActivate*AniScalingUtils::scaleAspectFitToDesignIpadProSize()){
auto directionX = AniGestureRecognizerDirection::NONE;
auto directionY = AniGestureRecognizerDirection::NONE;
auto minSwipeSpeedForDirection = m_min_swipe_speed*AniScalingUtils::scaleAspectFitToDesignIpadProSize();
if(absXSpeed >= minSwipeSpeedForDirection){
directionX = AniMathUtils::signum(xVel) < 0 ? AniGestureRecognizerDirection::LEFT : AniGestureRecognizerDirection::RIGHT;
}
if(absYSpeed >= minSwipeSpeedForDirection){
directionY = AniMathUtils::signum(yVel) < 0 ? AniGestureRecognizerDirection::DOWN : AniGestureRecognizerDirection::UP;
}
_onFastSwipeDetected(directionX, directionY, _startLocation, newLocation, absXSpeed, absYSpeed);
}
}