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#ifndef CC_CAMERA_H
#define CC_CAMERA_H
#include "Vectors.h"
/*
Represents a camera, may be first or third person
Copyright 2014-2023 ClassiCube | Licensed under BSD-3
*/
struct RayTracer;
struct Camera;
struct IGameComponent;
struct LocalPlayer;
extern struct IGameComponent Camera_Component;
/* Shared data for cameras. */
CC_VAR extern struct _CameraData {
/* How sensitive camera is to movements of mouse. */
int Sensitivity;
/* Whether smooth/cinematic camera mode is used. */
cc_bool Smooth;
/* Whether third person camera clip against blocks. */
cc_bool Clipping;
/* Whether to invert vertical mouse movement. */
cc_bool Invert;
/* Tilt effect applied to the camera. */
struct Matrix TiltM;
/* Bobbing offset of camera from player's eye. */
float BobbingVer, BobbingHor;
/* Cached position the camera is at. */
Vec3 CurrentPos;
/* Camera user is currently using. */
struct Camera* Active;
/* The mass (i.e. smoothness) of the smooth camera. */
float Mass;
/* Field of view of the camera */
int Fov, DefaultFov, ZoomFov;
float TiltPitch;
} Camera;
struct Camera {
/* Whether this camera is third person. (i.e. not allowed when -thirdperson in MOTD) */
cc_bool isThirdPerson;
/* Calculates the current projection matrix of this camera. */
void (*GetProjection)(struct Matrix* proj);
/* Calculates the current modelview matrix of this camera. */
void (*GetView)(struct Matrix* view);
/* Returns the current orientation of the camera. */
Vec2 (*GetOrientation)(void);
/* Returns the current interpolated position of the camera. */
Vec3 (*GetPosition)(float t);
/* Called to update the camera's state. */
/* Typically, this is used to adjust yaw/pitch based on accumulated mouse movement. */
void (*UpdateMouse)(struct LocalPlayer* p, float delta);
/* Called when mouse/pointer has moved. */
void (*OnRawMovement)(float deltaX, float deltaY);
/* Called when user closes all menus, and is interacting with camera again. */
void (*AcquireFocus)(void);
/* Called when user is no longer interacting with camera. (e.g. opened menu) */
void (*LoseFocus)(void);
/* Calculates selected block in the world, based on camera's current state */
void (*GetPickedBlock)(struct RayTracer* t);
/* Zooms the camera in or out when scrolling mouse wheel. */
cc_bool (*Zoom)(float amount);
/* Next camera in linked list of cameras. */
struct Camera* next;
};
/* Switches to next camera in the list of cameras. */
void Camera_CycleActive(void);
/* Registers a camera for use. */
CC_API void Camera_Register(struct Camera* camera);
/* Checks whether camera is still focused or not. */
/* If focus changes, calls AcquireFocus or LoseFocus */
void Camera_CheckFocus(void);
void Camera_UpdateProjection(void);
void Camera_SetFov(int fov);
void Camera_KeyLookUpdate(float delta);
#endif
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