polycode-engine/Core/Contents/Source/PolyTween.cpp

/*
 *  PolyTween.cpp
 *  Poly
 *
 *  Created by Ivan Safrin on 7/7/08.
 *  Copyright 2008 __MyCompanyName__. All rights reserved.
 *
 */


#include "PolyTween.h"

using namespace Polycode;

Tween::	Tween(float *target, int easeType, float startVal, float endVal, float time, bool repeat) : EventDispatcher() {
	targetVal = target;
	this->repeat = repeat;
	this->easeType = easeType;
	this->endVal = endVal;
	this->startVal = startVal;
	cVal = endVal - startVal;
	localTargetVal = startVal;
	this->endTime = time;
	tweenTime = 0;
	*targetVal = startVal;
	tweenTimer = new Timer(true, 1);
	tweenTimer->addEventListener(this, 0);
	complete = false;

	actEndTime = time;
	CoreServices::getInstance()->getTweenManager()->addTween(this);
}

void Tween::Pause(bool pauseVal) {
	tweenTimer->Pause(pauseVal);
}

void Tween::setSpeed(float speed) {
	if(speed <= 0 )		
		endTime = 0;
	else
		endTime = actEndTime / speed;
}

Tween::~Tween() {
	tweenTimer->removeEventListener(this, 0);
	CoreServices::getInstance()->getTimerManager()->removeTimer(tweenTimer);
}

bool Tween::isComplete() {
	return complete;
}

void Tween::doOnComplete() {
	dispatchEvent(new Event(), Event::COMPLETE_EVENT);
}

void Tween::handleEvent(Event *event) {
	if(tweenTime >= endTime) {
		if(repeat){
			Reset();
		} else {
			*targetVal = endVal;			
			complete = true;
		}
		return;
	}
	
	if(targetVal != NULL) {
		localTargetVal = interpolateTween();
		*targetVal = localTargetVal;
	}
	tweenTime += tweenTimer->getElapsedf();
	updateCustomTween();
}

void Tween::Reset() {
	tweenTime = 0;
	complete = false;
}

float Tween::interpolateTween() {
	float t = tweenTime;
	
	switch(easeType) {
		case EASE_IN_QUAD:
			t /= endTime;
			return cVal*t*t + startVal;
			break;
		case EASE_OUT_QUAD:
			t /= endTime;
			return -cVal * t*(t-2.0f) + startVal;
			break;
		case EASE_INOUT_QUAD:
			t /= endTime/2.0f;
			if (t < 1.0f) return cVal/2.0f*t*t + startVal;
			t--;
			return -cVal/2.0f * (t*(t-2.0f) - 1.0f) + startVal;
			break;
		case EASE_IN_CUBIC:
			t /= endTime;
			return cVal*t*t*t + startVal;
			break;
		case EASE_OUT_CUBIC:
			t /= endTime;
			t--;
			return cVal*(t*t*t + 1.0f) + startVal;
			break;
		case EASE_INOUT_CUBIC:
			t /= endTime/2.0f;
			if (t < 1.0f) return cVal/2.0f*t*t*t + startVal;
			t -= 2.0f;
			return cVal/2.0f*(t*t*t + 2.0f) + startVal;
			break;
		case EASE_IN_QUART:
			t /= endTime;
			return cVal*t*t*t*t + startVal;
			break;
		case EASE_OUT_QUART:
			t /= endTime;
			t--;
			return -cVal * (t*t*t*t - 1.0f) + startVal;
			break;
		case EASE_INOUT_QUART:
			t /= endTime/2.0f;
			if (t < 1.0f) return cVal/2.0f*t*t*t*t + startVal;
			t -= 2.0f;
			return -cVal/2.0f * (t*t*t*t - 2.0f) + startVal;
			break;
		case EASE_IN_QUINT:
			t /= endTime;
			return cVal*t*t*t*t*t + startVal;
			break;
		case EASE_OUT_QUINT:
			t /= endTime;
			t--;
			return cVal*(t*t*t*t*t + 1.0f) + startVal;
			break;
		case EASE_INOUT_QUINT:
			t /= endTime/2.0f;
			if (t < 1.0f) return cVal/2.0f*t*t*t*t*t + startVal;
			t -= 2.0f;
			return cVal/2.0f*(t*t*t*t*t + 2.0f) + startVal;
			break;
		case EASE_IN_SINE:
			return -cVal * cos(t/endTime * (PI/2.0f)) + cVal + startVal;
			break;
		case EASE_OUT_SINE:
			return cVal * sin(t/endTime * (PI/2.0f)) + startVal;
			break;
		case EASE_INOUT_SINE:
			return -cVal/2.0f * (cos(PI*t/endTime) - 1.0f) + startVal;
			break;
		case EASE_IN_EXPO:
			return cVal * pow( 2.0f, 10.0f * (t/endTime - 1.0f) ) + startVal;
			break;
		case EASE_OUT_EXPO:
			return cVal * ( -pow( 2.0f, -10.0f * t/endTime ) + 1.0f ) + startVal;
			break;
		case EASE_INOUT_EXPO:
			t /= endTime/2.0f;
			if (t < 1.0f) return cVal/2.0f * pow( 2.0f, 10.0f * (t - 1.0f) ) + startVal;
			t--;
			return cVal/2.0f * ( -pow( 2.0f, -10.0f * t) + 2.0f ) + startVal;
			break;
		case EASE_IN_CIRC:
			t /= endTime;
			return -cVal * (sqrt(1.0f - t*t) - 1.0f) + startVal;
			break;	
		case EASE_OUT_CIRC:
			t /= endTime;
			t--;
			return cVal * sqrt(1.0f - t*t) + startVal;
			break;
		case EASE_INOUT_CIRC:
			t /= endTime/2.0f;
			if (t < 1.0f) return -cVal/2.0f * (sqrt(1.0f - t*t) - 1.0f) + startVal;
			t -= 2.0f;
			return cVal/2.0f * (sqrt(1.0f - t*t) + 1.0f) + startVal;
			break;
		case EASE_OUT_BOUNCE:
		case EASE_INOUT_BOUNCE:
		case EASE_IN_BOUNCE:
			if ((t/=endTime) < (1/2.75)) {
				return cVal*(7.5625*t*t) + startVal;
			} else if (t < (2/2.75)) {
				return cVal*(7.5625*(t-=(1.5/2.75))*t + .75) + startVal;
			} else if (t < (2.5/2.75)) {
				return cVal*(7.5625*(t-=(2.25/2.75))*t + .9375) + startVal;
			} else {
				return cVal*(7.5625*(t-=(2.625/2.75))*t + .984375) + startVal;
			}
			break;	
		default:
		case EASE_NONE:
			// return c*t/d + b;
			return cVal*tweenTime/endTime+startVal;
			break;
	}
}

BezierPathTween::BezierPathTween(Vector3 *target, BezierCurve *curve, int easeType, float time, bool repeat) : Tween(&pathValue, easeType, 0.0f, 1.0f, time, repeat) {
	this->curve = curve;
	this->target = target;
	pathValue = 0;
}

void BezierPathTween::updateCustomTween() {
	*target = curve->getPointAt(pathValue);
}

BezierPathTween::~BezierPathTween() {

}

QuaternionTween::QuaternionTween(Quaternion *target, BezierCurve *wCurve, BezierCurve *xCurve, BezierCurve *yCurve, BezierCurve *zCurve, int easeType, float time, bool repeat) : Tween(&pathValue, easeType, 0.0f, 1.0f, time, repeat) {
	this->quatCurve = new QuaternionCurve(wCurve, xCurve, yCurve, zCurve);		
	this->target = target;
	pathValue = 0;
						
}

QuaternionTween::~QuaternionTween() {
}

void QuaternionTween::updateCustomTween() {
	*target = quatCurve->interpolate(pathValue, true);
}