camera.h

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/* (c) Magnus Auvinen. See licence.txt in the root of the distribution for more information. */
/* If you are missing that file, acquire a complete release at teeworlds.com.                */
#ifndef GAME_CLIENT_COMPONENTS_CAMERA_H
#define GAME_CLIENT_COMPONENTS_CAMERA_H
#include <base/bezier.h>
#include <base/vmath.h>
 
#include <engine/client.h>
#include <engine/console.h>
 
#include <game/client/component.h>
 
class CCamera : public CComponent
{
    friend class CMenuBackground;
 
public:
    enum
    {
        CAMTYPE_UNDEFINED = -1,
        CAMTYPE_SPEC,
        CAMTYPE_PLAYER,
    };
 
private:
    int m_CamType;
    vec2 m_aLastPos[NUM_DUMMIES];
    vec2 m_PrevCenter;
 
    int m_PrevSpecId;
    bool m_WasSpectating;
 
    bool m_CameraSmoothing;
    vec2 m_CameraSmoothingCenter;
    vec2 m_CameraSmoothingTarget;
    CCubicBezier m_CameraSmoothingBezierX;
    CCubicBezier m_CameraSmoothingBezierY;
    float m_CameraSmoothingStart;
    float m_CameraSmoothingEnd;
    vec2 m_CenterBeforeSmoothing;
 
    float CameraSmoothingProgress(float CurrentTime) const;
 
    CCubicBezier m_ZoomSmoothing;
    float m_ZoomSmoothingStart;
    float m_ZoomSmoothingEnd;
 
    void ScaleZoom(float Factor);
    void ChangeZoom(float Target, int Smoothness, bool IsUser);
    float ZoomProgress(float CurrentTime) const;
 
    float MinZoomLevel();
    float MaxZoomLevel();
 
    vec2 m_LastTargetPos;
    float m_DyncamSmoothingSpeedBias;
    bool m_CanUseCameraInfo;
    bool m_UsingAutoSpecCamera;
 
    char m_aAutoSpecCameraTooltip[512];
 
public:
    static constexpr float ZOOM_STEP = 0.866025f;

    static float ZoomStepsToValue(float Steps) { return std::pow(CCamera::ZOOM_STEP, Steps); }
 
    vec2 m_Center;
    bool m_ZoomSet;
    bool m_Zooming;
    float m_Zoom;
    float m_ZoomSmoothingTarget;
 
    bool m_AutoSpecCameraZooming;
    bool m_AutoSpecCamera;
    float m_UserZoomTarget;
 
    vec2 m_DyncamTargetCameraOffset;
    vec2 m_aDyncamCurrentCameraOffset[NUM_DUMMIES];
 
    CCamera();
    int Sizeof() const override { return sizeof(*this); }
    void OnRender() override;
 
    // DDRace
 
    void OnConsoleInit() override;
    void OnReset() override;
 
    void SetView(ivec2 Pos, bool Relative = false);
    void GotoSwitch(int Number, int Offset = -1);
    void GotoTele(int Number, int Offset = -1);
 
    void SetZoom(float Target, int Smoothness, bool IsUser);
    bool ZoomAllowed() const;
 
    int Deadzone() const;
    int FollowFactor() const;
    int CamType() const { return m_CamType; }
 
    void UpdateCamera();
    void ResetAutoSpecCamera();
    bool SpectatingPlayer() const { return m_CanUseCameraInfo; }
    bool CanUseAutoSpecCamera() const;
    void ToggleAutoSpecCamera();
    void UpdateAutoSpecCameraTooltip();
 
    const char *AutoSpecCameraTooltip() { return m_aAutoSpecCameraTooltip; }
 
private:
    static void ConZoomPlus(IConsole::IResult *pResult, void *pUserData);
    static void ConZoomMinus(IConsole::IResult *pResult, void *pUserData);
    static void ConZoom(IConsole::IResult *pResult, void *pUserData);
    static void ConSetView(IConsole::IResult *pResult, void *pUserData);
    static void ConSetViewRelative(IConsole::IResult *pResult, void *pUserData);
    static void ConGotoSwitch(IConsole::IResult *pResult, void *pUserData);
    static void ConGotoTele(IConsole::IResult *pResult, void *pUserData);
 
    bool m_ForceFreeview;
    vec2 m_ForceFreeviewPos;
    int m_GotoSwitchOffset;
    int m_GotoTeleOffset;
    ivec2 m_GotoSwitchLastPos;
    ivec2 m_GotoTeleLastPos;
    int m_GotoTeleLastNumber = -1;
};
 
#endif