ActionPreviewController.h

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#pragma once
#include "common/Export.h"
 
 
#include "action/ActionPreview.h"
#include "action/editor/ActionTimelineEditor.h"
#include "editor/EditorPresentation.h"
 
#include <optional>
 
namespace eve::editor {
 
class EVENGINE_API_EDITORS ActionPreviewController {
public:
    ActionPreviewController(ActionTimelineEditor& editor, action::IActionPreviewSink& sink,
                            const action::IActionRootMotionSource* rootMotion = nullptr);
 
    [[nodiscard]] Result<void> setRootMotionSampleCount(std::uint32_t sampleCount);
    [[nodiscard]] Result<void> refresh();
    [[nodiscard]] Result<void> seek(Duration time);
    [[nodiscard]] Result<void> stop();
    [[nodiscard]] Result<void> stepFrames(std::int64_t frames, double frameRate);
    [[nodiscard]] Result<void> jumpToEnd();
    [[nodiscard]] Result<std::size_t> update(Duration delta);
    [[nodiscard]] const std::optional<action::ActionPreviewFrame>& lastFrame() const noexcept { return lastFrame_; }
    void drawRootMotion(IEditorOverlay& overlay, OverlayPoint origin = {}, float scale = 1.0f) const;
 
private:
    [[nodiscard]] Result<action::ActionPreviewFrame> buildFrame(
        action::ActionPreviewReason reason, Duration previous, Duration current,
        const std::vector<action::ActionTimelineEvent>& events) const;
    [[nodiscard]] static action::ActionPreviewCueKind cueKind(const action::ActionTimelineEvent& event) noexcept;
 
    ActionTimelineEditor&                     editor_;
    action::IActionPreviewSink&               sink_;
    const action::IActionRootMotionSource*    rootMotion_            = nullptr;
    std::uint32_t                             rootMotionSampleCount_ = 64;
    std::optional<action::ActionPreviewFrame> lastFrame_;
};
 
}  // namespace eve::editor