37 lines
844 B
C++
37 lines
844 B
C++
#include "scenes/frame_animator.hpp"
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#include <algorithm>
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namespace scenes {
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FrameAnimator::FrameAnimator(int num_frames, int frame_ms, bool loop)
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: num_frames_(std::max(1, num_frames)),
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frame_ms_(std::max(1, frame_ms)),
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loop_(loop) {}
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void FrameAnimator::tick(int delta_ms) {
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if (finished_) return;
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elapsed_ms_ += delta_ms;
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while (elapsed_ms_ >= frame_ms_) {
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elapsed_ms_ -= frame_ms_;
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++current_frame_;
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if (current_frame_ >= num_frames_) {
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if (loop_) {
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current_frame_ = 0;
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} else {
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current_frame_ = num_frames_ - 1;
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finished_ = true;
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return;
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}
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}
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}
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}
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void FrameAnimator::reset() {
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current_frame_ = 0;
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elapsed_ms_ = 0;
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finished_ = false;
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}
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} // namespace scenes
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