submodule/rive-cpp/include/rive/animation/state_instance.hpp

   1 #ifndef _RIVE_STATE_INSTANCE_HPP_
   2 #define _RIVE_STATE_INSTANCE_HPP_
   3
   4 #include <string>
   5 #include <stddef.h>
   6 #include "rive/rive_types.hpp"
   7 #include "rive/span.hpp"
   8
   9 namespace rive {
  10     class LayerState;
  11     class SMIInput;
  12     class ArtboardInstance;
  13
  14     /// Represents an instance of a state tracked by the State Machine.
  15     class StateInstance {
  16     private:
  17         const LayerState* m_LayerState;
  18
  19     public:
  20         StateInstance(const LayerState* layerState);
  21         virtual ~StateInstance();
  22         virtual void advance(float seconds, Span<SMIInput*> inputs) = 0;
  23         virtual void apply(float mix) = 0;
  24
  25         /// Returns true when the State Machine needs to keep advancing this
  26         /// state.
  27         virtual bool keepGoing() const = 0;
  28
  29         const LayerState* state() const;
  30     };
  31 } // namespace rive
  32 #endif