initial commit

1 files changed, 85 insertions, 0 deletions

diff --git a/src/Camera.h b/src/Camera.h
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+++ b/src/Camera.h
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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