53 lines
1000 B
C++
53 lines
1000 B
C++
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#include "..\e2daction.h"
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e2d::JumpBy::JumpBy(double duration, const Vector & vec, double height, int jumps)
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: ActionGradual(duration)
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, _deltaPos(vec)
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, _height(height)
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, _jumps(jumps)
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{
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}
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e2d::JumpBy * e2d::JumpBy::clone() const
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{
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return new (std::nothrow) JumpBy(_duration, _deltaPos, _height, _jumps);
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}
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e2d::JumpBy * e2d::JumpBy::reverse() const
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{
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return new (std::nothrow) JumpBy(_duration, -_deltaPos, _height, _jumps);
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}
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void e2d::JumpBy::_init()
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{
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ActionGradual::_init();
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if (_target)
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{
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_prevPos = _startPos = _target->getPos();
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}
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}
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void e2d::JumpBy::_update()
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{
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ActionGradual::_update();
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if (_target)
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{
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double frac = fmod(_delta * _jumps, 1.0);
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double x = _deltaPos.x * _delta;
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double y = _height * 4 * frac * (1 - frac);
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y += _deltaPos.y * _delta;
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Point currentPos = _target->getPos();
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Vector diff = currentPos - _prevPos;
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_startPos = diff + _startPos;
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Point newPos = _startPos + Vector(x, y);
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_target->setPos(newPos);
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_prevPos = newPos;
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}
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}
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