95 lines
2.2 KiB
C++
95 lines
2.2 KiB
C++
#include <sstream>
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#include "animation.h"
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#include "m_exceptions.h"
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namespace Util {
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Animation::Animation(uint16_t num, uint16_t fps) :
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callback() {
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status = STOPPED;
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numFrames = num;
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currentFrame = 0;
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delay = 1000 / fps;
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lastChangeTicks = 0;
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}
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Animation::Animation(const Animation & other) {
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status = other.status;
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onDone = other.onDone;
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numFrames = other.numFrames;
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currentFrame = other.currentFrame;
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delay = other.delay;
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lastChangeTicks = other.lastChangeTicks;
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callback = other.callback;
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}
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void Animation::update(const uint32_t & nowTicks) {
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if (status == STOPPED)
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return;
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if (lastChangeTicks == 0)
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lastChangeTicks = nowTicks;
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if (nowTicks < lastChangeTicks + delay)
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return;
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lastChangeTicks = nowTicks;
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if (status == PLAY_FORWARD)
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flipFrame(true);
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else if (status == PLAY_BACKWARD)
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flipFrame(false);
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}
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void Animation::flipFrame(bool forward = true) {
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switch(forward) {
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case true:
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if (currentFrame < numFrames - 1)
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++currentFrame;
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else if (currentFrame == numFrames - 1)
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isDone();
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break;
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case false:
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if (currentFrame == 0)
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isDone();
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else
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--currentFrame;
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}
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}
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void Animation::jumpToFrame(const uint16_t num, const Status andDo) {
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if (num >= numFrames) {
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std::ostringstream o;
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o << num << " >= " << numFrames;
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throw E_OUTOFRANGE(o.str());
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}
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currentFrame = num;
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status = andDo;
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}
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void Animation::isDone() {
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if (onDone == STOP) {
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status = STOPPED;
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return;
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}
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if (onDone == REVERSE) {
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status = (status == PLAY_FORWARD) ? PLAY_BACKWARD : PLAY_FORWARD;
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return;
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}
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if (onDone == LOOP) {
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if (status == PLAY_FORWARD)
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jumpToFrame(0, PLAY_FORWARD);
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else if (status == PLAY_BACKWARD)
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jumpToFrame(numFrames - 1, PLAY_BACKWARD);
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return;
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}
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status = STOPPED;
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if (onDone == FCALLBACK) {
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if (callback)
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callback();
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else
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ERROR << "Wanted to call callback, but nobody was there" << std::endl;
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}
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}
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}
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void AnimCallback() {
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WARN << "EmptyAnimCallback called" << std::endl;
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}
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