led_sequencer.hpp

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#pragma once
#include <cstdint>

 
namespace hitlib {
 
class LedStrand; 
 
// ============================================================================

class Sequencer {
public:
    static constexpr uint8_t MAX_STRANDS = 8;
 
    // ------------------------------------------------------------------------

    struct Phase {
        uint32_t durationMs;            
        void (*startFn)(LedStrand&);    
    };
 
    // ------------------------------------------------------------------------

    constexpr Sequencer(const Phase* phases, uint8_t count)
        : phases(phases), phaseCount(count) {}
 
    // ------------------------------------------------------------------------

    void start(LedStrand& strand);

    void stop();

    void stop(const LedStrand& strand);

    void update(LedStrand& strand);

    bool isRunning() const;

    bool isRunning(const LedStrand& strand) const;
 
private:
    struct Run {
        const LedStrand* strand;        
        uint32_t         phaseStartMs;  
        uint32_t         lastTouch;     
        uint8_t          phase;         
    };
 
    const Phase* phases;                 
    uint8_t      phaseCount;             
    Run          runs[MAX_STRANDS] = {}; 
    uint32_t     touches = 0;            
 
    int8_t indexOf(const LedStrand& strand) const;
};
 
} // namespace hitlib