renderbug-cpp/firmware/inputs/ColorCycle.h

#include "../Figments/Figments.h"

using CRGB = NSFastLED::CRGB;

template<int Period>
class ColorSequenceInput: public InputSource {
public:
    ColorSequenceInput(const std::vector<CRGB> &colors, const char* name, Task::State initialState)
      : InputSource(name, initialState), m_colors(colors) {}

    InputEvent read() override {
        if (m_reset) {
            m_reset = false;
            m_override = false;
            return InputEvent{InputEvent::SetColor, m_colors[m_idx]};
        }
        if (!m_override) {
            EVERY_N_SECONDS(Period) {
                m_idx %= m_colors.size();
                return InputEvent{InputEvent::SetColor, m_colors[m_idx++]};
            }
        }
        return InputEvent{};
    }

    void handleEvent(const InputEvent& event) {
        if (event.intent == InputEvent::SetColor) {
            m_override = true;
        }
    }

    void onStart() override {
      m_reset = true;
    }

private:
    std::vector<CRGB> m_colors;
    int m_idx = 0;
    bool m_reset = true;
    bool m_override = false;
};