WIP rcamera redesign vector (#2563)

* core functionality CAMERA_FREE

* fix example

* add remaining camera modes

* add view bobbing

* view bobbing

* catch curser in SetCameraMode

* adjust examples

* fix compilation on linux

* fix example text_draw_3d

* actually fix text_draw_3d

* Updated camera API

* Improve Vector3RotateByAxisAngle() function

* remove camera.mode dependency from low-level functions

* remove camera.mode from struct

* fixes after rebase

* adjust examples for new UpdateCamera function

* adjust example models_loading_m3d

---------

Co-authored-by: Ray <[email protected]>

3 files changed, 851 insertions, 394 deletions

diff --git a/src/raylib.h b/src/raylib.h
index e31a514a..650b5b29 100644
--- a/src/raylib.h
+++ b/src/raylib.h
@@ -1156,13 +1156,7 @@ RLAPI float GetGesturePinchAngle(void);                 // Get gesture pinch ang
 //------------------------------------------------------------------------------------
 // Camera System Functions (Module: rcamera)
 //------------------------------------------------------------------------------------
-RLAPI void SetCameraMode(Camera camera, int mode);      // Set camera mode (multiple camera modes available)
-RLAPI void UpdateCamera(Camera *camera);                // Update camera position for selected mode
-
-RLAPI void SetCameraPanControl(int keyPan);             // Set camera pan key to combine with mouse movement (free camera)
-RLAPI void SetCameraAltControl(int keyAlt);             // Set camera alt key to combine with mouse movement (free camera)
-RLAPI void SetCameraSmoothZoomControl(int keySmoothZoom); // Set camera smooth zoom key to combine with mouse (free camera)
-RLAPI void SetCameraMoveControls(int keyFront, int keyBack, int keyRight, int keyLeft, int keyUp, int keyDown); // Set camera move controls (1st person and 3rd person cameras)
+RLAPI void UpdateCamera(Camera3D *camera, int mode);              // Update camera position for selected mode
 
 //------------------------------------------------------------------------------------
 // Basic Shapes Drawing Functions (Module: shapes)
diff --git a/src/rcamera.h b/src/rcamera.h
index 0caad666..60ac642a 100644
--- a/src/rcamera.h
+++ b/src/rcamera.h
@@ -2,8 +2,6 @@
 *
 *   rcamera - Basic camera system for multiple camera modes
 *
-*   NOTE: Memory footprint of this library is aproximately 52 bytes (global variables)
-*
 *   CONFIGURATION:
 *
 *   #define CAMERA_IMPLEMENTATION
@@ -17,6 +15,7 @@
 *
 *   CONTRIBUTORS:
 *       Ramon Santamaria:   Supervision, review, update and maintenance
+*       Christoph Wagner:   Redesign (2022)
 *       Marc Palau:         Initial implementation (2014)
 *
 *
@@ -44,15 +43,26 @@
 #ifndef RCAMERA_H
 #define RCAMERA_H
 
+// The only dependency // TODO review standalone mode
+#include "raymath.h"
+
 //----------------------------------------------------------------------------------
 // Defines and Macros
 //----------------------------------------------------------------------------------
 //...
+#if defined(CAMERA_STANDALONE)
+#define CAMERA_CULL_DISTANCE_NEAR 0.01
+#define CAMERA_CULL_DISTANCE_FAR 1000.0
+#else
+#define CAMERA_CULL_DISTANCE_NEAR  RL_CULL_DISTANCE_NEAR
+#define CAMERA_CULL_DISTANCE_FAR  RL_CULL_DISTANCE_FAR
+#endif
 
 //----------------------------------------------------------------------------------
 // Types and Structures Definition
 // NOTE: Below types are required for CAMERA_STANDALONE usage
 //----------------------------------------------------------------------------------
+// TODO review
 #if defined(CAMERA_STANDALONE)
     // Vector2 type
     typedef struct Vector2 {
@@ -76,8 +86,6 @@
         int projection;         // Camera type, defines projection type: CAMERA_PERSPECTIVE or CAMERA_ORTHOGRAPHIC
     } Camera3D;
 
-    typedef Camera3D Camera;    // Camera type fallback, defaults to Camera3D
-
     // Camera system modes
     typedef enum {
         CAMERA_CUSTOM = 0,
@@ -97,7 +105,7 @@
 //----------------------------------------------------------------------------------
 // Global Variables Definition
 //----------------------------------------------------------------------------------
-//...
+
 
 //----------------------------------------------------------------------------------
 // Module Functions Declaration
@@ -107,17 +115,19 @@
 extern "C" {            // Prevents name mangling of functions
 #endif
 
-#if defined(CAMERA_STANDALONE)
-void SetCameraMode(Camera camera, int mode);                // Set camera mode (multiple camera modes available)
-void UpdateCamera(Camera *camera);                          // Update camera position for selected mode
-
-void SetCameraPanControl(int keyPan);                       // Set camera pan key to combine with mouse movement (free camera)
-void SetCameraAltControl(int keyAlt);                       // Set camera alt key to combine with mouse movement (free camera)
-void SetCameraSmoothZoomControl(int szoomKey);              // Set camera smooth zoom key to combine with mouse (free camera)
-void SetCameraMoveControls(int keyFront, int keyBack,
-                           int keyRight, int keyLeft,
-                           int keyUp, int keyDown);         // Set camera move controls (1st person and 3rd person cameras)
-#endif
+Vector3 GetCameraForward(Camera3D* camera);
+Vector3 GetCameraUp(Camera3D* camera);
+Vector3 GetCameraRight(Camera3D* camera);
+void CameraMoveForward(Camera3D* camera, float distance, bool moveInWorldPlane);
+void CameraMoveUp(Camera3D* camera, float distance);
+void CameraMoveRight(Camera3D* camera, float distance, bool moveInWorldPlane);
+void CameraZoom(Camera3D* camera, float delta);
+void CameraYaw(Camera3D* camera, float angle, bool rotateAroundTarget);
+void CameraPitch(Camera3D* camera, float angle, bool lockView, bool rotateAroundTarget, bool rotateUp);
+void CameraRoll(Camera3D* camera, float angle);
+void CameraViewBobbing(Camera3D* camera);
+Matrix GetCameraViewMatrix(Camera3D* camera);
+Matrix GetCameraProjectionMatrix(Camera3D* camera, float aspect);
 
 #if defined(__cplusplus)
 }
@@ -134,424 +144,310 @@ void SetCameraMoveControls(int keyFront, int keyBack,
 
 #if defined(CAMERA_IMPLEMENTATION)
 
-#include <math.h>               // Required for: sinf(), cosf(), sqrtf()
-
 //----------------------------------------------------------------------------------
 // Defines and Macros
 //----------------------------------------------------------------------------------
-#ifndef PI
-    #define PI 3.14159265358979323846
-#endif
-#ifndef DEG2RAD
-    #define DEG2RAD (PI/180.0f)
-#endif
-#ifndef RAD2DEG
-    #define RAD2DEG (180.0f/PI)
-#endif
+
+#define CAMERA_MOVE_SPEED                               0.09f
+#define CAMERA_ROTATION_SPEED                           0.03f
 
 // Camera mouse movement sensitivity
-#define CAMERA_MOUSE_MOVE_SENSITIVITY                   0.5f    // TODO: it should be independent of framerate
+#define CAMERA_MOUSE_MOVE_SENSITIVITY                   0.003f    // TODO: it should be independant of framerate
 #define CAMERA_MOUSE_SCROLL_SENSITIVITY                 1.5f
 
-// FREE_CAMERA
-#define CAMERA_FREE_MOUSE_SENSITIVITY                   0.01f
-#define CAMERA_FREE_DISTANCE_MIN_CLAMP                  0.3f
-#define CAMERA_FREE_DISTANCE_MAX_CLAMP                  120.0f
-#define CAMERA_FREE_MIN_CLAMP                           85.0f
-#define CAMERA_FREE_MAX_CLAMP                          -85.0f
-#define CAMERA_FREE_SMOOTH_ZOOM_SENSITIVITY             0.05f
-#define CAMERA_FREE_PANNING_DIVIDER                     5.1f
-
-// ORBITAL_CAMERA
-#define CAMERA_ORBITAL_SPEED                            0.5f       // Radians per second
-
-// FIRST_PERSON
-//#define CAMERA_FIRST_PERSON_MOUSE_SENSITIVITY           0.003f
-#define CAMERA_FIRST_PERSON_FOCUS_DISTANCE              25.0f
-#define CAMERA_FIRST_PERSON_MIN_CLAMP                   89.0f
-#define CAMERA_FIRST_PERSON_MAX_CLAMP                  -89.0f
-
-// When walking, y-position of the player moves up-down at step frequency (swinging) but
-// also the body slightly tilts left-right on every step, when all the body weight is left over one foot (tilting)
-#define CAMERA_FIRST_PERSON_STEP_FREQUENCY               1.8f       // Step frequency when walking (steps per second)
-#define CAMERA_FIRST_PERSON_SWINGING_DELTA               0.03f      // Maximum up-down swinging distance when walking
-#define CAMERA_FIRST_PERSON_TILTING_DELTA                0.005f     // Maximum left-right tilting distance when walking
-
-// THIRD_PERSON
-//#define CAMERA_THIRD_PERSON_MOUSE_SENSITIVITY           0.003f
-#define CAMERA_THIRD_PERSON_DISTANCE_CLAMP              1.2f
-#define CAMERA_THIRD_PERSON_MIN_CLAMP                   5.0f
-#define CAMERA_THIRD_PERSON_MAX_CLAMP                  -85.0f
-#define CAMERA_THIRD_PERSON_OFFSET                      (Vector3){ 0.4f, 0.0f, 0.0f }
+#define CAMERA_ORBITAL_SPEED                            0.01f       // Radians per frame
+
+
+#define CAMERA_FIRST_PERSON_STEP_TRIGONOMETRIC_DIVIDER  8.0f
+#define CAMERA_FIRST_PERSON_STEP_DIVIDER                30.0f
+#define CAMERA_FIRST_PERSON_WAVING_DIVIDER              200.0f
 
 // PLAYER (used by camera)
-#define PLAYER_MOVEMENT_SENSITIVITY                     2.0f
+#define PLAYER_MOVEMENT_SENSITIVITY                     20.0f
 
 //----------------------------------------------------------------------------------
 // Types and Structures Definition
 //----------------------------------------------------------------------------------
-// Camera move modes (first person and third person cameras)
-typedef enum {
-    MOVE_FRONT = 0,
-    MOVE_BACK,
-    MOVE_RIGHT,
-    MOVE_LEFT,
-    MOVE_UP,
-    MOVE_DOWN
-} CameraMove;
-
-// Camera global state context data [56 bytes]
-typedef struct {
-    unsigned int mode;              // Current camera mode
-    float targetDistance;           // Camera distance from position to target
-    float playerEyesPosition;       // Player eyes position from ground (in meters)
-    Vector2 angle;                  // Camera angle in plane XZ
-
-    // Camera movement control keys
-    int moveControl[6];             // Move controls (CAMERA_FIRST_PERSON)
-    int smoothZoomControl;          // Smooth zoom control key
-    int altControl;                 // Alternative control key
-    int panControl;                 // Pan view control key
-} CameraData;
+
 
 //----------------------------------------------------------------------------------
 // Global Variables Definition
 //----------------------------------------------------------------------------------
-static CameraData CAMERA = {        // Global CAMERA state context
-    .mode = 0,
-    .targetDistance = 0,
-    .playerEyesPosition = 1.85f,
-    .angle = { 0 },
-    .moveControl = { 'W', 'S', 'D', 'A', 'E', 'Q' },
-    .smoothZoomControl = 341,       // raylib: KEY_LEFT_CONTROL
-    .altControl = 342,              // raylib: KEY_LEFT_ALT
-    .panControl = 2                 // raylib: MOUSE_BUTTON_MIDDLE
-};
+
 
 //----------------------------------------------------------------------------------
 // Module specific Functions Declaration
 //----------------------------------------------------------------------------------
-#if defined(CAMERA_STANDALONE)
-// NOTE: Camera controls depend on some raylib input functions
-static void EnableCursor() {}       // Unlock cursor
-static void DisableCursor() {}      // Lock cursor
 
-static int IsKeyDown(int key) { return 0; }
-
-static int IsMouseButtonDown(int button) { return 0;}
-static float GetMouseWheelMove() { return 0.0f; }
-static Vector2 GetMousePosition() { return (Vector2){ 0.0f, 0.0f }; }
-#endif
 
 //----------------------------------------------------------------------------------
 // Module Functions Definition
 //----------------------------------------------------------------------------------
 
-// Select camera mode (multiple camera modes available)
-void SetCameraMode(Camera camera, int mode)
+// Returns the cameras forward vector (normalized)
+Vector3 GetCameraForward(Camera3D *camera)
 {
-    Vector3 v1 = camera.position;
-    Vector3 v2 = camera.target;
+    return Vector3Normalize(Vector3Subtract(camera->target, camera->position));
+}
 
-    float dx = v2.x - v1.x;
-    float dy = v2.y - v1.y;
-    float dz = v2.z - v1.z;
+// Returns the cameras up vector (normalized)
+// Note: The up vector might not be perpendicular to the forward vector
+Vector3 GetCameraUp(Camera3D *camera)
+{
+    return Vector3Normalize(camera->up);
+}
 
-    CAMERA.targetDistance = sqrtf(dx*dx + dy*dy + dz*dz);   // Distance to target
+// Returns the cameras right vector (normalized)
+Vector3 GetCameraRight(Camera3D *camera)
+{
+    Vector3 forward = GetCameraForward(camera);
+    Vector3 up = GetCameraUp(camera);
+    return Vector3CrossProduct(forward, up);
+}
 
-    // Camera angle calculation
-    CAMERA.angle.x = atan2f(dx, dz);                        // Camera angle in plane XZ (0 aligned with Z, move positive CCW)
-    CAMERA.angle.y = atan2f(dy, sqrtf(dx*dx + dz*dz));      // Camera angle in plane XY (0 aligned with X, move positive CW)
+// Moves the camera in its forward direction
+void CameraMoveForward(Camera3D *camera, float distance, bool moveInWorldPlane)
+{
+    Vector3 forward = GetCameraForward(camera);
 
-    CAMERA.playerEyesPosition = camera.position.y;          // Init player eyes position to camera Y position
+    if (moveInWorldPlane)
+    {
+        // Project vector onto world plane
+        forward.y = 0;
+        forward = Vector3Normalize(forward);
+    }
 
-    // Lock cursor for first person and third person cameras
-    if ((mode == CAMERA_FIRST_PERSON) || (mode == CAMERA_THIRD_PERSON)) DisableCursor();
-    else EnableCursor();
+    // Scale by distance
+    forward = Vector3Scale(forward, distance);
 
-    CAMERA.mode = mode;
+    // Move position and target
+    camera->position = Vector3Add(camera->position, forward);
+    camera->target = Vector3Add(camera->target, forward);
 }
 
-// Update camera depending on selected mode
-// NOTE: Camera controls depend on some raylib functions:
-//       System: EnableCursor(), DisableCursor()
-//       Mouse: IsMouseButtonDown(), GetMousePosition(), GetMouseWheelMove()
-//       Keys:  IsKeyDown()
-void UpdateCamera(Camera *camera)
+// Moves the camera in its up direction
+void CameraMoveUp(Camera3D *camera, float distance)
 {
-    static float swingCounter = 0.0f;    // Used for 1st person swinging movement
+    Vector3 up = GetCameraUp(camera);
+    
+    // Scale by distance
+    up = Vector3Scale(up, distance);
+
+    // Move position and target
+    camera->position = Vector3Add(camera->position, up);
+    camera->target = Vector3Add(camera->target, up);
+}
 
-    // TODO: Compute CAMERA.targetDistance and CAMERA.angle here (?)
+// Moves the camera target in its current right direction
+void CameraMoveRight(Camera3D *camera, float distance, bool moveInWorldPlane)
+{
+    Vector3 right = GetCameraRight(camera);
 
-    // Mouse movement detection
-    Vector2 mousePositionDelta = GetMouseDelta();
-    float mouseWheelMove = GetMouseWheelMove();
-
-    // Keys input detection
-    // TODO: Input detection is raylib-dependant, it could be moved outside the module
-    bool keyPan = IsMouseButtonDown(CAMERA.panControl);
-    bool keyAlt = IsKeyDown(CAMERA.altControl);
-    bool szoomKey = IsKeyDown(CAMERA.smoothZoomControl);
-    bool direction[6] = { IsKeyDown(CAMERA.moveControl[MOVE_FRONT]),
-                          IsKeyDown(CAMERA.moveControl[MOVE_BACK]),
-                          IsKeyDown(CAMERA.moveControl[MOVE_RIGHT]),
-                          IsKeyDown(CAMERA.moveControl[MOVE_LEFT]),
-                          IsKeyDown(CAMERA.moveControl[MOVE_UP]),
-                          IsKeyDown(CAMERA.moveControl[MOVE_DOWN]) };
-
-    // Support for multiple automatic camera modes
-    // NOTE: In case of CAMERA_CUSTOM nothing happens here, user must update it manually
-    switch (CAMERA.mode)
+    if (moveInWorldPlane)
     {
-        case CAMERA_FREE:           // Camera free controls, using standard 3d-content-creation scheme
-        {
-            // Camera zoom
-            if ((CAMERA.targetDistance < CAMERA_FREE_DISTANCE_MAX_CLAMP) && (mouseWheelMove < 0))
-            {
-                CAMERA.targetDistance -= (mouseWheelMove*CAMERA_MOUSE_SCROLL_SENSITIVITY);
-                if (CAMERA.targetDistance > CAMERA_FREE_DISTANCE_MAX_CLAMP) CAMERA.targetDistance = CAMERA_FREE_DISTANCE_MAX_CLAMP;
-            }
-
-            // Camera looking down
-            else if ((camera->position.y > camera->target.y) && (CAMERA.targetDistance == CAMERA_FREE_DISTANCE_MAX_CLAMP) && (mouseWheelMove < 0))
-            {
-                camera->target.x += mouseWheelMove*(camera->target.x - camera->position.x)*CAMERA_MOUSE_SCROLL_SENSITIVITY/CAMERA.targetDistance;
-                camera->target.y += mouseWheelMove*(camera->target.y - camera->position.y)*CAMERA_MOUSE_SCROLL_SENSITIVITY/CAMERA.targetDistance;
-                camera->target.z += mouseWheelMove*(camera->target.z - camera->position.z)*CAMERA_MOUSE_SCROLL_SENSITIVITY/CAMERA.targetDistance;
-            }
-            else if ((camera->position.y > camera->target.y) && (camera->target.y >= 0))
-            {
-                camera->target.x += mouseWheelMove*(camera->target.x - camera->position.x)*CAMERA_MOUSE_SCROLL_SENSITIVITY/CAMERA.targetDistance;
-                camera->target.y += mouseWheelMove*(camera->target.y - camera->position.y)*CAMERA_MOUSE_SCROLL_SENSITIVITY/CAMERA.targetDistance;
-                camera->target.z += mouseWheelMove*(camera->target.z - camera->position.z)*CAMERA_MOUSE_SCROLL_SENSITIVITY/CAMERA.targetDistance;
-
-                // if (camera->target.y < 0) camera->target.y = -0.001;
-            }
-            else if ((camera->position.y > camera->target.y) && (camera->target.y < 0) && (mouseWheelMove > 0))
-            {
-                CAMERA.targetDistance -= (mouseWheelMove*CAMERA_MOUSE_SCROLL_SENSITIVITY);
-                if (CAMERA.targetDistance < CAMERA_FREE_DISTANCE_MIN_CLAMP) CAMERA.targetDistance = CAMERA_FREE_DISTANCE_MIN_CLAMP;
-            }
-            // Camera looking up
-            else if ((camera->position.y < camera->target.y) && (CAMERA.targetDistance == CAMERA_FREE_DISTANCE_MAX_CLAMP) && (mouseWheelMove < 0))
-            {
-                camera->target.x += mouseWheelMove*(camera->target.x - camera->position.x)*CAMERA_MOUSE_SCROLL_SENSITIVITY/CAMERA.targetDistance;
-                camera->target.y += mouseWheelMove*(camera->target.y - camera->position.y)*CAMERA_MOUSE_SCROLL_SENSITIVITY/CAMERA.targetDistance;
-                camera->target.z += mouseWheelMove*(camera->target.z - camera->position.z)*CAMERA_MOUSE_SCROLL_SENSITIVITY/CAMERA.targetDistance;
-            }
-            else if ((camera->position.y < camera->target.y) && (camera->target.y <= 0))
-            {
-                camera->target.x += mouseWheelMove*(camera->target.x - camera->position.x)*CAMERA_MOUSE_SCROLL_SENSITIVITY/CAMERA.targetDistance;
-                camera->target.y += mouseWheelMove*(camera->target.y - camera->position.y)*CAMERA_MOUSE_SCROLL_SENSITIVITY/CAMERA.targetDistance;
-                camera->target.z += mouseWheelMove*(camera->target.z - camera->position.z)*CAMERA_MOUSE_SCROLL_SENSITIVITY/CAMERA.targetDistance;
-
-                // if (camera->target.y > 0) camera->target.y = 0.001;
-            }
-            else if ((camera->position.y < camera->target.y) && (camera->target.y > 0) && (mouseWheelMove > 0))
-            {
-                CAMERA.targetDistance -= (mouseWheelMove*CAMERA_MOUSE_SCROLL_SENSITIVITY);
-                if (CAMERA.targetDistance < CAMERA_FREE_DISTANCE_MIN_CLAMP) CAMERA.targetDistance = CAMERA_FREE_DISTANCE_MIN_CLAMP;
-            }
-
-            // Input keys checks
-            if (keyPan)
-            {
-                if (keyAlt)     // Alternative key behaviour
-                {
-                    if (szoomKey)
-                    {
-                        // Camera smooth zoom
-                        CAMERA.targetDistance += (mousePositionDelta.y*CAMERA_FREE_SMOOTH_ZOOM_SENSITIVITY);
-                    }
-                    else
-                    {
-                        // Camera rotation
-                        CAMERA.angle.x += mousePositionDelta.x*-CAMERA_FREE_MOUSE_SENSITIVITY;
-                        CAMERA.angle.y += mousePositionDelta.y*-CAMERA_FREE_MOUSE_SENSITIVITY;
-
-                        // Angle clamp
-                        if (CAMERA.angle.y > CAMERA_FREE_MIN_CLAMP*DEG2RAD) CAMERA.angle.y = CAMERA_FREE_MIN_CLAMP*DEG2RAD;
-                        else if (CAMERA.angle.y < CAMERA_FREE_MAX_CLAMP*DEG2RAD) CAMERA.angle.y = CAMERA_FREE_MAX_CLAMP*DEG2RAD;
-                    }
-                }
-                else
-                {
-                    // Camera panning
-                    camera->target.x += ((mousePositionDelta.x*CAMERA_FREE_MOUSE_SENSITIVITY)*cosf(CAMERA.angle.x) + (mousePositionDelta.y*-CAMERA_FREE_MOUSE_SENSITIVITY)*sinf(CAMERA.angle.x)*sinf(CAMERA.angle.y))*(CAMERA.targetDistance/CAMERA_FREE_PANNING_DIVIDER);
-                    camera->target.y += ((mousePositionDelta.y*CAMERA_FREE_MOUSE_SENSITIVITY)*cosf(CAMERA.angle.y))*(CAMERA.targetDistance/CAMERA_FREE_PANNING_DIVIDER);
-                    camera->target.z += ((mousePositionDelta.x*-CAMERA_FREE_MOUSE_SENSITIVITY)*sinf(CAMERA.angle.x) + (mousePositionDelta.y*-CAMERA_FREE_MOUSE_SENSITIVITY)*cosf(CAMERA.angle.x)*sinf(CAMERA.angle.y))*(CAMERA.targetDistance/CAMERA_FREE_PANNING_DIVIDER);
-                }
-            }
-
-            // Update camera position with changes
-            camera->position.x = -sinf(CAMERA.angle.x)*CAMERA.targetDistance*cosf(CAMERA.angle.y) + camera->target.x;
-            camera->position.y = -sinf(CAMERA.angle.y)*CAMERA.targetDistance + camera->target.y;
-            camera->position.z = -cosf(CAMERA.angle.x)*CAMERA.targetDistance*cosf(CAMERA.angle.y) + camera->target.z;
-
-        } break;
-        case CAMERA_ORBITAL:        // Camera just orbits around target, only zoom allowed
-        {
-            CAMERA.angle.x += CAMERA_ORBITAL_SPEED*GetFrameTime();      // Camera orbit angle
-            CAMERA.targetDistance -= (mouseWheelMove*CAMERA_MOUSE_SCROLL_SENSITIVITY);   // Camera zoom
-
-            // Camera distance clamp
-            if (CAMERA.targetDistance < CAMERA_THIRD_PERSON_DISTANCE_CLAMP) CAMERA.targetDistance = CAMERA_THIRD_PERSON_DISTANCE_CLAMP;
-
-            // Update camera position with changes
-            camera->position.x = sinf(CAMERA.angle.x)*CAMERA.targetDistance*cosf(CAMERA.angle.y) + camera->target.x;
-            camera->position.y = ((CAMERA.angle.y <= 0.0f)? 1 : -1)*sinf(CAMERA.angle.y)*CAMERA.targetDistance*sinf(CAMERA.angle.y) + camera->target.y;
-            camera->position.z = cosf(CAMERA.angle.x)*CAMERA.targetDistance*cosf(CAMERA.angle.y) + camera->target.z;
-
-        } break;
-        case CAMERA_FIRST_PERSON:   // Camera moves as in a first-person game, controls are configurable
-        {
-            // NOTE: On CAMERA_FIRST_PERSON player Y-movement is limited to player 'eyes position'
-            camera->position.y = CAMERA.playerEyesPosition;
-
-            camera->position.x += (sinf(CAMERA.angle.x)*direction[MOVE_BACK] -
-                                   sinf(CAMERA.angle.x)*direction[MOVE_FRONT] -
-                                   cosf(CAMERA.angle.x)*direction[MOVE_LEFT] +
-                                   cosf(CAMERA.angle.x)*direction[MOVE_RIGHT])*PLAYER_MOVEMENT_SENSITIVITY*GetFrameTime();
-
-            camera->position.y += (sinf(CAMERA.angle.y)*direction[MOVE_FRONT] -
-                                   sinf(CAMERA.angle.y)*direction[MOVE_BACK] +
-                                   1.0f*direction[MOVE_UP] - 1.0f*direction[MOVE_DOWN])*PLAYER_MOVEMENT_SENSITIVITY*GetFrameTime();
-
-            camera->position.z += (cosf(CAMERA.angle.x)*direction[MOVE_BACK] -
-                                   cosf(CAMERA.angle.x)*direction[MOVE_FRONT] +
-                                   sinf(CAMERA.angle.x)*direction[MOVE_LEFT] -
-                                   sinf(CAMERA.angle.x)*direction[MOVE_RIGHT])*PLAYER_MOVEMENT_SENSITIVITY*GetFrameTime();
-
-            // Camera orientation calculation
-            CAMERA.angle.x -= mousePositionDelta.x*CAMERA_MOUSE_MOVE_SENSITIVITY*GetFrameTime();
-            CAMERA.angle.y -= mousePositionDelta.y*CAMERA_MOUSE_MOVE_SENSITIVITY*GetFrameTime();
-
-            // Angle clamp
-            if (CAMERA.angle.y > CAMERA_FIRST_PERSON_MIN_CLAMP*DEG2RAD) CAMERA.angle.y = CAMERA_FIRST_PERSON_MIN_CLAMP*DEG2RAD;
-            else if (CAMERA.angle.y < CAMERA_FIRST_PERSON_MAX_CLAMP*DEG2RAD) CAMERA.angle.y = CAMERA_FIRST_PERSON_MAX_CLAMP*DEG2RAD;
-
-            // Calculate translation matrix
-            Matrix matTranslation = { 1.0f, 0.0f, 0.0f, 0.0f,
-                                      0.0f, 1.0f, 0.0f, 0.0f,
-                                      0.0f, 0.0f, 1.0f, (CAMERA.targetDistance/CAMERA_FREE_PANNING_DIVIDER),
-                                      0.0f, 0.0f, 0.0f, 1.0f };
-
-            // Calculate rotation matrix
-            Matrix matRotation = { 1.0f, 0.0f, 0.0f, 0.0f,
-                                   0.0f, 1.0f, 0.0f, 0.0f,
-                                   0.0f, 0.0f, 1.0f, 0.0f,
-                                   0.0f, 0.0f, 0.0f, 1.0f };
-
-            float cosz = cosf(0.0f);
-            float sinz = sinf(0.0f);
-            float cosy = cosf(-(PI*2 - CAMERA.angle.x));
-            float siny = sinf(-(PI*2 - CAMERA.angle.x));
-            float cosx = cosf(-(PI*2 - CAMERA.angle.y));
-            float sinx = sinf(-(PI*2 - CAMERA.angle.y));
-
-            matRotation.m0 = cosz*cosy;
-            matRotation.m4 = (cosz*siny*sinx) - (sinz*cosx);
-            matRotation.m8 = (cosz*siny*cosx) + (sinz*sinx);
-            matRotation.m1 = sinz*cosy;
-            matRotation.m5 = (sinz*siny*sinx) + (cosz*cosx);
-            matRotation.m9 = (sinz*siny*cosx) - (cosz*sinx);
-            matRotation.m2 = -siny;
-            matRotation.m6 = cosy*sinx;
-            matRotation.m10= cosy*cosx;
-
-            // Multiply translation and rotation matrices
-            Matrix matTransform = { 0 };
-            matTransform.m0 = matTranslation.m0*matRotation.m0 + matTranslation.m1*matRotation.m4 + matTranslation.m2*matRotation.m8 + matTranslation.m3*matRotation.m12;
-            matTransform.m1 = matTranslation.m0*matRotation.m1 + matTranslation.m1*matRotation.m5 + matTranslation.m2*matRotation.m9 + matTranslation.m3*matRotation.m13;
-            matTransform.m2 = matTranslation.m0*matRotation.m2 + matTranslation.m1*matRotation.m6 + matTranslation.m2*matRotation.m10 + matTranslation.m3*matRotation.m14;
-            matTransform.m3 = matTranslation.m0*matRotation.m3 + matTranslation.m1*matRotation.m7 + matTranslation.m2*matRotation.m11 + matTranslation.m3*matRotation.m15;
-            matTransform.m4 = matTranslation.m4*matRotation.m0 + matTranslation.m5*matRotation.m4 + matTranslation.m6*matRotation.m8 + matTranslation.m7*matRotation.m12;
-            matTransform.m5 = matTranslation.m4*matRotation.m1 + matTranslation.m5*matRotation.m5 + matTranslation.m6*matRotation.m9 + matTranslation.m7*matRotation.m13;
-            matTransform.m6 = matTranslation.m4*matRotation.m2 + matTranslation.m5*matRotation.m6 + matTranslation.m6*matRotation.m10 + matTranslation.m7*matRotation.m14;
-            matTransform.m7 = matTranslation.m4*matRotation.m3 + matTranslation.m5*matRotation.m7 + matTranslation.m6*matRotation.m11 + matTranslation.m7*matRotation.m15;
-            matTransform.m8 = matTranslation.m8*matRotation.m0 + matTranslation.m9*matRotation.m4 + matTranslation.m10*matRotation.m8 + matTranslation.m11*matRotation.m12;
-            matTransform.m9 = matTranslation.m8*matRotation.m1 + matTranslation.m9*matRotation.m5 + matTranslation.m10*matRotation.m9 + matTranslation.m11*matRotation.m13;
-            matTransform.m10 = matTranslation.m8*matRotation.m2 + matTranslation.m9*matRotation.m6 + matTranslation.m10*matRotation.m10 + matTranslation.m11*matRotation.m14;
-            matTransform.m11 = matTranslation.m8*matRotation.m3 + matTranslation.m9*matRotation.m7 + matTranslation.m10*matRotation.m11 + matTranslation.m11*matRotation.m15;
-            matTransform.m12 = matTranslation.m12*matRotation.m0 + matTranslation.m13*matRotation.m4 + matTranslation.m14*matRotation.m8 + matTranslation.m15*matRotation.m12;
-            matTransform.m13 = matTranslation.m12*matRotation.m1 + matTranslation.m13*matRotation.m5 + matTranslation.m14*matRotation.m9 + matTranslation.m15*matRotation.m13;
-            matTransform.m14 = matTranslation.m12*matRotation.m2 + matTranslation.m13*matRotation.m6 + matTranslation.m14*matRotation.m10 + matTranslation.m15*matRotation.m14;
-            matTransform.m15 = matTranslation.m12*matRotation.m3 + matTranslation.m13*matRotation.m7 + matTranslation.m14*matRotation.m11 + matTranslation.m15*matRotation.m15;
-
-            camera->target.x = camera->position.x - matTransform.m12;
-            camera->target.y = camera->position.y - matTransform.m13;
-            camera->target.z = camera->position.z - matTransform.m14;
-
-            // Camera swinging (y-movement), only when walking (some key pressed)
-            for (int i = 0; i < 6; i++) if (direction[i]) { swingCounter += GetFrameTime(); break; }
-            camera->position.y -= sinf(2*PI*CAMERA_FIRST_PERSON_STEP_FREQUENCY*swingCounter)*CAMERA_FIRST_PERSON_SWINGING_DELTA;
-
-            // Camera waiving (xz-movement), only when walking (some key pressed)
-            camera->up.x = sinf(2*PI*CAMERA_FIRST_PERSON_STEP_FREQUENCY*swingCounter)*CAMERA_FIRST_PERSON_TILTING_DELTA;
-            camera->up.z = -sinf(2*PI*CAMERA_FIRST_PERSON_STEP_FREQUENCY*swingCounter)*CAMERA_FIRST_PERSON_TILTING_DELTA;
-
-        } break;
-        case CAMERA_THIRD_PERSON:   // Camera moves as in a third-person game, following target at a distance, controls are configurable
-        {
-            camera->position.x += (sinf(CAMERA.angle.x)*direction[MOVE_BACK] -
-                                   sinf(CAMERA.angle.x)*direction[MOVE_FRONT] -
-                                   cosf(CAMERA.angle.x)*direction[MOVE_LEFT] +
-                                   cosf(CAMERA.angle.x)*direction[MOVE_RIGHT])*PLAYER_MOVEMENT_SENSITIVITY*GetFrameTime();
-
-            camera->position.y += (sinf(CAMERA.angle.y)*direction[MOVE_FRONT] -
-                                   sinf(CAMERA.angle.y)*direction[MOVE_BACK] +
-                                   1.0f*direction[MOVE_UP] - 1.0f*direction[MOVE_DOWN])*PLAYER_MOVEMENT_SENSITIVITY*GetFrameTime();
-
-            camera->position.z += (cosf(CAMERA.angle.x)*direction[MOVE_BACK] -
-                                   cosf(CAMERA.angle.x)*direction[MOVE_FRONT] +
-                                   sinf(CAMERA.angle.x)*direction[MOVE_LEFT] -
-                                   sinf(CAMERA.angle.x)*direction[MOVE_RIGHT])*PLAYER_MOVEMENT_SENSITIVITY*GetFrameTime();
-
-            // Camera orientation calculation
-            CAMERA.angle.x += (mousePositionDelta.x*-CAMERA_MOUSE_MOVE_SENSITIVITY);
-            CAMERA.angle.y += (mousePositionDelta.y*-CAMERA_MOUSE_MOVE_SENSITIVITY);
-
-            // Angle clamp
-            if (CAMERA.angle.y > CAMERA_THIRD_PERSON_MIN_CLAMP*DEG2RAD) CAMERA.angle.y = CAMERA_THIRD_PERSON_MIN_CLAMP*DEG2RAD;
-            else if (CAMERA.angle.y < CAMERA_THIRD_PERSON_MAX_CLAMP*DEG2RAD) CAMERA.angle.y = CAMERA_THIRD_PERSON_MAX_CLAMP*DEG2RAD;
-
-            // Camera zoom
-            CAMERA.targetDistance -= (mouseWheelMove*CAMERA_MOUSE_SCROLL_SENSITIVITY);
-
-            // Camera distance clamp
-            if (CAMERA.targetDistance < CAMERA_THIRD_PERSON_DISTANCE_CLAMP) CAMERA.targetDistance = CAMERA_THIRD_PERSON_DISTANCE_CLAMP;
-
-            camera->position.x = sinf(CAMERA.angle.x)*CAMERA.targetDistance*cosf(CAMERA.angle.y) + camera->target.x;
-
-            if (CAMERA.angle.y <= 0.0f) camera->position.y = sinf(CAMERA.angle.y)*CAMERA.targetDistance*sinf(CAMERA.angle.y) + camera->target.y;
-            else camera->position.y = -sinf(CAMERA.angle.y)*CAMERA.targetDistance*sinf(CAMERA.angle.y) + camera->target.y;
-
-            camera->position.z = cosf(CAMERA.angle.x)*CAMERA.targetDistance*cosf(CAMERA.angle.y) + camera->target.z;
-
-        } break;
-        case CAMERA_CUSTOM: break;
-        default: break;
+        // Project vector onto world plane
+        right.y = 0;
+        right = Vector3Normalize(right);
     }
+
+    // Scale by distance
+    right = Vector3Scale(right, distance);
+
+    // Move position and target
+    camera->position = Vector3Add(camera->position, right);
+    camera->target = Vector3Add(camera->target, right);
 }
 
-// Set camera pan key to combine with mouse movement (free camera)
-void SetCameraPanControl(int keyPan) { CAMERA.panControl = keyPan; }
+// Moves the camera position closer/farther to/from the camera target
+void CameraZoom(Camera3D *camera, float delta)
+{
+    float distance = Vector3Distance(camera->position, camera->target);
+
+    // Apply delta
+    distance += delta;
 
-// Set camera alt key to combine with mouse movement (free camera)
-void SetCameraAltControl(int keyAlt) { CAMERA.altControl = keyAlt; }
+    // Distance must be greater than 0
+    if (distance < 0) distance = 0.001f;
 
-// Set camera smooth zoom key to combine with mouse (free camera)
-void SetCameraSmoothZoomControl(int szoomKey) { CAMERA.smoothZoomControl = szoomKey; }
+    // Set new distance by moving the position along the forward vector
+    Vector3 forward = GetCameraForward(camera);
+    camera->position = Vector3Add(camera->target, Vector3Scale(forward, -distance));
+}
 
-// Set camera move controls (1st person and 3rd person cameras)
-void SetCameraMoveControls(int keyFront, int keyBack, int keyRight, int keyLeft, int keyUp, int keyDown)
+// Rotates the camera around its up vector
+// Yaw is "looking left and right"
+// If rotateAroundTarget is false, the camera rotates around its position
+// Note: angle must be provided in radians
+void CameraYaw(Camera3D *camera, float angle, bool rotateAroundTarget)
 {
-    CAMERA.moveControl[MOVE_FRONT] = keyFront;
-    CAMERA.moveControl[MOVE_BACK] = keyBack;
-    CAMERA.moveControl[MOVE_RIGHT] = keyRight;
-    CAMERA.moveControl[MOVE_LEFT] = keyLeft;
-    CAMERA.moveControl[MOVE_UP] = keyUp;
-    CAMERA.moveControl[MOVE_DOWN] = keyDown;
+    // Rotation axis
+    Vector3 up = GetCameraUp(camera);
+
+    // View vector
+    Vector3 target_position = Vector3Subtract(camera->target, camera->position);
+
+    // Rotate view vector around up axis
+    target_position = Vector3RotateByAxisAngle(target_position, up, angle);
+
+    if (rotateAroundTarget)
+    {
+        // Move position relative to target
+        camera->position = Vector3Subtract(camera->target, target_position);
+    }
+    else // rotate around camera.position
+    {
+        // Move target relative to position
+        camera->target = Vector3Add(camera->position, target_position);
+    }
+}
+
+// Rotates the camera around its right vector
+// Pitch is "looking up and down"
+// lockView prevents camera overrotation (aka "somersaults")
+// If rotateAroundTarget is false, the camera rotates around its position
+// rotateUp rotates the up direction as well (typically only usefull in CAMERA_FREE)
+// Note: angle must be provided in radians
+void CameraPitch(Camera3D *camera, float angle, bool lockView, bool rotateAroundTarget, bool rotateUp)
+{
+    // Up direction
+    Vector3 up = GetCameraUp(camera);
+
+    // View vector
+    Vector3 target_position = Vector3Subtract(camera->target, camera->position);
+
+    if (lockView)
+    {
+        // In these camera modes we clamp the Pitch angle
+        // to allow only viewing straight up or down.
+
+        // Clamp view up
+        float max_angle_up = Vector3Angle(up, target_position);
+        max_angle_up -= 0.001f; // avoid numerical errors
+        if (angle > max_angle_up) angle = max_angle_up;
+
+        // Clamp view down
+        float max_angle_down = Vector3Angle(Vector3Negate(up), target_position);
+        max_angle_down *= -1.0f; // downwards angle is negative
+        max_angle_down += 0.001f; // avoid numerical errors
+        if (angle < max_angle_down) angle = max_angle_down;
+    }
+
+    // Rotation axis
+    Vector3 right = GetCameraRight(camera);
+
+    // Rotate view vector around right axis
+    target_position = Vector3RotateByAxisAngle(target_position, right, angle);
+
+    if (rotateAroundTarget)
+    {
+        // Move position relative to target
+        camera->position = Vector3Subtract(camera->target, target_position);
+    }
+    else // rotate around camera.position
+    {
+        // Move target relative to position
+        camera->target = Vector3Add(camera->position, target_position);
+    }
+
+    if (rotateUp)
+    {
+        // Rotate up direction around right axis
+        camera->up = Vector3RotateByAxisAngle(camera->up, right, angle);
+    }
+}
+
+// Rotates the camera around its forward vector
+// Roll is "turning your head sideways to the left or right"
+// Note: angle must be provided in radians
+void CameraRoll(Camera3D *camera, float angle)
+{
+    // Rotation axis
+    Vector3 forward = GetCameraForward(camera);
+
+    // Rotate up direction around forward axis
+    camera->up = Vector3RotateByAxisAngle(camera->up, forward, angle);
+}
+
+// Moves camera slightly to simulate a walking motion
+// Note: Only active if camera->swingCounter > 0
+void CameraViewBobbing(Camera3D *camera)
+{
+    if (camera->swingCounter > 0)
+    {
+        // NOTE: We delay the target movement relative to the position movement to create a little pitch with each step.
+        camera->position.y = camera->position.y - 0.25f * sinf((camera->swingCounter + 1) / CAMERA_FIRST_PERSON_STEP_TRIGONOMETRIC_DIVIDER) / CAMERA_FIRST_PERSON_STEP_DIVIDER;
+        camera->target.y = camera->target.y - 0.25f * sinf((camera->swingCounter - 1) / CAMERA_FIRST_PERSON_STEP_TRIGONOMETRIC_DIVIDER) / CAMERA_FIRST_PERSON_STEP_DIVIDER;
+
+        // Update counter for next frame
+        camera->swingCounter %= 2147483647 /* INT_MAX */; // Counter must be positive
+        camera->swingCounter++;
+    }
+}
+
+// Returns the camera view matrix
+Matrix GetCameraViewMatrix(Camera3D *camera)
+{
+    return MatrixLookAt(camera->position, camera->target, camera->up);
+}
+
+// Returns the camera projection matrix
+Matrix GetCameraProjectionMatrix(Camera3D *camera, float aspect)
+{
+    if (camera->projection == CAMERA_PERSPECTIVE)
+    {
+        return MatrixPerspective(camera->fovy * DEG2RAD, aspect, CAMERA_CULL_DISTANCE_NEAR, CAMERA_CULL_DISTANCE_FAR);
+    }
+    else if (camera->projection == CAMERA_ORTHOGRAPHIC)
+    {
+        double top = camera->fovy / 2.0;
+        double right = top * aspect;
+        return MatrixOrtho(-right, right, -top, top, CAMERA_CULL_DISTANCE_NEAR, CAMERA_CULL_DISTANCE_FAR);
+    }
+    
+    return MatrixIdentity();
+}
+
+
+#ifndef CAMERA_STANDALONE
+// Update camera position for selected mode
+// Camera mode: CAMERA_FREE, CAMERA_FIRST_PERSON, CAMERA_THIRD_PERSON, CAMERA_ORBITAL or CUSTOM
+void UpdateCamera(Camera3D *camera, int mode)
+{
+    Vector2 mousePositionDelta = GetMouseDelta();
+
+    bool moveInWorldPlane = mode == CAMERA_FIRST_PERSON || mode == CAMERA_THIRD_PERSON;
+    bool rotateAroundTarget = mode == CAMERA_THIRD_PERSON || mode == CAMERA_ORBITAL;
+    bool lockView = mode == CAMERA_FIRST_PERSON || mode == CAMERA_THIRD_PERSON || mode == CAMERA_ORBITAL;
+    bool rotateUp = mode == CAMERA_FREE;
+    
+    // Camera movement
+    if (IsKeyDown(KEY_W)) CameraMoveForward(camera, CAMERA_MOVE_SPEED, moveInWorldPlane);
+    if (IsKeyDown(KEY_S)) CameraMoveForward(camera, -CAMERA_MOVE_SPEED, moveInWorldPlane);
+    if (IsKeyDown(KEY_D)) CameraMoveRight(camera, CAMERA_MOVE_SPEED, moveInWorldPlane);
+    if (IsKeyDown(KEY_A)) CameraMoveRight(camera, -CAMERA_MOVE_SPEED, moveInWorldPlane);
+    if (IsKeyDown(KEY_SPACE)) CameraMoveUp(camera, CAMERA_MOVE_SPEED);
+    if (IsKeyDown(KEY_LEFT_CONTROL)) CameraMoveUp(camera, -CAMERA_MOVE_SPEED);
+
+    // Camera rotation
+    if (IsKeyDown(KEY_DOWN)) CameraPitch(camera, -CAMERA_ROTATION_SPEED, lockView, rotateAroundTarget, rotateUp);
+    if (IsKeyDown(KEY_UP)) CameraPitch(camera, CAMERA_ROTATION_SPEED, lockView, rotateAroundTarget, rotateUp);
+    if (IsKeyDown(KEY_RIGHT)) CameraYaw(camera, -CAMERA_ROTATION_SPEED, rotateAroundTarget);
+    if (IsKeyDown(KEY_LEFT)) CameraYaw(camera, CAMERA_ROTATION_SPEED, rotateAroundTarget);
+    if (IsKeyDown(KEY_Q)) CameraRoll(camera, -CAMERA_ROTATION_SPEED);
+    if (IsKeyDown(KEY_E)) CameraRoll(camera, CAMERA_ROTATION_SPEED);
+
+    CameraYaw(camera, mousePositionDelta.x * -CAMERA_MOUSE_MOVE_SENSITIVITY, rotateAroundTarget);
+    CameraPitch(camera, mousePositionDelta.y * -CAMERA_MOUSE_MOVE_SENSITIVITY, lockView, rotateAroundTarget, rotateUp);
+
+    // Zoom target distance
+    CameraZoom(camera, -GetMouseWheelMove());
+    if (IsKeyPressed(KEY_KP_SUBTRACT)) CameraZoom(camera, 2.0f);
+    if (IsKeyPressed(KEY_KP_ADD)) CameraZoom(camera, -2.0f);
+
+
+    // Apply view bobbing when moving around (per default only active in CAMERA_FIRST_PERSON)
+    if (mode == CAMERA_FIRST_PERSON && (IsKeyDown(KEY_W) || IsKeyDown(KEY_A) || IsKeyDown(KEY_S) || IsKeyDown(KEY_D))) CameraViewBobbing(camera);
 }
+#endif // !CAMERA_STANDALONE
 
 #endif // CAMERA_IMPLEMENTATION
diff --git a/src/rcamera_old.h b/src/rcamera_old.h
new file mode 100644
index 00000000..08c37669
--- /dev/null
+++ b/src/rcamera_old.h
@@ -0,0 +1,567 @@
+/*******************************************************************************************
+*
+*   rcamera - Basic camera system for multiple camera modes
+*
+*   NOTE: Memory footprint of this library is aproximately 52 bytes (global variables)
+*
+*   CONFIGURATION:
+*
+*   #define CAMERA_IMPLEMENTATION
+*       Generates the implementation of the library into the included file.
+*       If not defined, the library is in header only mode and can be included in other headers
+*       or source files without problems. But only ONE file should hold the implementation.
+*
+*   #define CAMERA_STANDALONE
+*       If defined, the library can be used as standalone as a camera system but some
+*       functions must be redefined to manage inputs accordingly.
+*
+*   CONTRIBUTORS:
+*       Ramon Santamaria:   Supervision, review, update and maintenance
+*       Marc Palau:         Initial implementation (2014)
+*
+*
+*   LICENSE: zlib/libpng
+*
+*   Copyright (c) 2015-2022 Ramon Santamaria (@raysan5)
+*
+*   This software is provided "as-is", without any express or implied warranty. In no event
+*   will the authors be held liable for any damages arising from the use of this software.
+*
+*   Permission is granted to anyone to use this software for any purpose, including commercial
+*   applications, and to alter it and redistribute it freely, subject to the following restrictions:
+*
+*     1. The origin of this software must not be misrepresented; you must not claim that you
+*     wrote the original software. If you use this software in a product, an acknowledgment
+*     in the product documentation would be appreciated but is not required.
+*
+*     2. Altered source versions must be plainly marked as such, and must not be misrepresented
+*     as being the original software.
+*
+*     3. This notice may not be removed or altered from any source distribution.
+*
+**********************************************************************************************/
+
+#ifndef RCAMERA_H
+#define RCAMERA_H
+
+//----------------------------------------------------------------------------------
+// Defines and Macros
+//----------------------------------------------------------------------------------
+//...
+
+//----------------------------------------------------------------------------------
+// Types and Structures Definition
+// NOTE: Below types are required for CAMERA_STANDALONE usage
+//----------------------------------------------------------------------------------
+#if defined(CAMERA_STANDALONE)
+    // Vector2 type
+    typedef struct Vector2 {
+        float x;
+        float y;
+    } Vector2;
+
+    // Vector3 type
+    typedef struct Vector3 {
+        float x;
+        float y;
+        float z;
+    } Vector3;
+
+    // Camera type, defines a camera position/orientation in 3d space
+    typedef struct Camera3D {
+        Vector3 position;       // Camera position
+        Vector3 target;         // Camera target it looks-at
+        Vector3 up;             // Camera up vector (rotation over its axis)
+        float fovy;             // Camera field-of-view apperture in Y (degrees) in perspective, used as near plane width in orthographic
+        int type;               // Camera type, defines projection type: CAMERA_PERSPECTIVE or CAMERA_ORTHOGRAPHIC
+    } Camera3D;
+
+    typedef Camera3D Camera;    // Camera type fallback, defaults to Camera3D
+
+    // Camera system modes
+    typedef enum {
+        CAMERA_CUSTOM = 0,
+        CAMERA_FREE,
+        CAMERA_ORBITAL,
+        CAMERA_FIRST_PERSON,
+        CAMERA_THIRD_PERSON
+    } CameraMode;
+
+    // Camera projection modes
+    typedef enum {
+        CAMERA_PERSPECTIVE = 0,
+        CAMERA_ORTHOGRAPHIC
+    } CameraProjection;
+#endif
+
+//----------------------------------------------------------------------------------
+// Global Variables Definition
+//----------------------------------------------------------------------------------
+//...
+
+//----------------------------------------------------------------------------------
+// Module Functions Declaration
+//----------------------------------------------------------------------------------
+
+#ifdef __cplusplus
+extern "C" {            // Prevents name mangling of functions
+#endif
+
+#if defined(CAMERA_STANDALONE)
+void SetCameraMode(Camera camera, int mode);                // Set camera mode (multiple camera modes available)
+void UpdateCamera(Camera *camera);                          // Update camera position for selected mode
+
+void SetCameraPanControl(int keyPan);                       // Set camera pan key to combine with mouse movement (free camera)
+void SetCameraAltControl(int keyAlt);                       // Set camera alt key to combine with mouse movement (free camera)
+void SetCameraSmoothZoomControl(int szoomKey);              // Set camera smooth zoom key to combine with mouse (free camera)
+void SetCameraMoveControls(int keyFront, int keyBack,
+                           int keyRight, int keyLeft,
+                           int keyUp, int keyDown);         // Set camera move controls (1st person and 3rd person cameras)
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // CAMERA_H
+
+
+/***********************************************************************************
+*
+*   CAMERA IMPLEMENTATION
+*
+************************************************************************************/
+
+#if defined(CAMERA_IMPLEMENTATION)
+
+#include <math.h>               // Required for: sinf(), cosf(), sqrtf()
+
+//----------------------------------------------------------------------------------
+// Defines and Macros
+//----------------------------------------------------------------------------------
+#ifndef PI
+    #define PI 3.14159265358979323846
+#endif
+#ifndef DEG2RAD
+    #define DEG2RAD (PI/180.0f)
+#endif
+#ifndef RAD2DEG
+    #define RAD2DEG (180.0f/PI)
+#endif
+
+// Camera mouse movement sensitivity
+#define CAMERA_MOUSE_MOVE_SENSITIVITY                   0.003f
+#define CAMERA_MOUSE_SCROLL_SENSITIVITY                 1.5f
+
+// FREE_CAMERA
+#define CAMERA_FREE_MOUSE_SENSITIVITY                   0.01f
+#define CAMERA_FREE_DISTANCE_MIN_CLAMP                  0.3f
+#define CAMERA_FREE_DISTANCE_MAX_CLAMP                  120.0f
+#define CAMERA_FREE_MIN_CLAMP                           85.0f
+#define CAMERA_FREE_MAX_CLAMP                          -85.0f
+#define CAMERA_FREE_SMOOTH_ZOOM_SENSITIVITY             0.05f
+#define CAMERA_FREE_PANNING_DIVIDER                     5.1f
+
+// ORBITAL_CAMERA
+#define CAMERA_ORBITAL_SPEED                            0.01f       // Radians per frame
+
+// FIRST_PERSON
+//#define CAMERA_FIRST_PERSON_MOUSE_SENSITIVITY           0.003f
+#define CAMERA_FIRST_PERSON_FOCUS_DISTANCE              25.0f
+#define CAMERA_FIRST_PERSON_MIN_CLAMP                   89.0f
+#define CAMERA_FIRST_PERSON_MAX_CLAMP                  -89.0f
+
+#define CAMERA_FIRST_PERSON_STEP_TRIGONOMETRIC_DIVIDER  8.0f
+#define CAMERA_FIRST_PERSON_STEP_DIVIDER                30.0f
+#define CAMERA_FIRST_PERSON_WAVING_DIVIDER              200.0f
+
+// THIRD_PERSON
+//#define CAMERA_THIRD_PERSON_MOUSE_SENSITIVITY           0.003f
+#define CAMERA_THIRD_PERSON_DISTANCE_CLAMP              1.2f
+#define CAMERA_THIRD_PERSON_MIN_CLAMP                   5.0f
+#define CAMERA_THIRD_PERSON_MAX_CLAMP                  -85.0f
+#define CAMERA_THIRD_PERSON_OFFSET                      (Vector3){ 0.4f, 0.0f, 0.0f }
+
+// PLAYER (used by camera)
+#define PLAYER_MOVEMENT_SENSITIVITY                     20.0f
+
+//----------------------------------------------------------------------------------
+// Types and Structures Definition
+//----------------------------------------------------------------------------------
+// Camera move modes (first person and third person cameras)
+typedef enum {
+    MOVE_FRONT = 0,
+    MOVE_BACK,
+    MOVE_RIGHT,
+    MOVE_LEFT,
+    MOVE_UP,
+    MOVE_DOWN
+} CameraMove;
+
+// Camera global state context data [56 bytes]
+typedef struct {
+    unsigned int mode;              // Current camera mode
+    float targetDistance;           // Camera distance from position to target
+    float playerEyesPosition;       // Player eyes position from ground (in meters)
+    Vector2 angle;                  // Camera angle in plane XZ
+    Vector2 previousMousePosition;  // Previous mouse position
+
+    // Camera movement control keys
+    int moveControl[6];             // Move controls (CAMERA_FIRST_PERSON)
+    int smoothZoomControl;          // Smooth zoom control key
+    int altControl;                 // Alternative control key
+    int panControl;                 // Pan view control key
+} CameraData;
+
+//----------------------------------------------------------------------------------
+// Global Variables Definition
+//----------------------------------------------------------------------------------
+static CameraData CAMERA = {        // Global CAMERA state context
+    .mode = 0,
+    .targetDistance = 0,
+    .playerEyesPosition = 1.85f,
+    .angle = { 0 },
+    .previousMousePosition = { 0 },
+    .moveControl = { 'W', 'S', 'D', 'A', 'E', 'Q' },
+    .smoothZoomControl = 341,       // raylib: KEY_LEFT_CONTROL
+    .altControl = 342,              // raylib: KEY_LEFT_ALT
+    .panControl = 2                 // raylib: MOUSE_BUTTON_MIDDLE
+};
+
+//----------------------------------------------------------------------------------
+// Module specific Functions Declaration
+//----------------------------------------------------------------------------------
+#if defined(CAMERA_STANDALONE)
+// NOTE: Camera controls depend on some raylib input functions
+static void EnableCursor() {}       // Unlock cursor
+static void DisableCursor() {}      // Lock cursor
+
+static int IsKeyDown(int key) { return 0; }
+
+static int IsMouseButtonDown(int button) { return 0;}
+static float GetMouseWheelMove() { return 0.0f; }
+static Vector2 GetMousePosition() { return (Vector2){ 0.0f, 0.0f }; }
+#endif
+
+//----------------------------------------------------------------------------------
+// Module Functions Definition
+//----------------------------------------------------------------------------------
+
+// Select camera mode (multiple camera modes available)
+void SetCameraMode(Camera camera, int mode)
+{
+    Vector3 v1 = camera.position;
+    Vector3 v2 = camera.target;
+
+    float dx = v2.x - v1.x;
+    float dy = v2.y - v1.y;
+    float dz = v2.z - v1.z;
+
+    CAMERA.targetDistance = sqrtf(dx*dx + dy*dy + dz*dz);   // Distance to target
+
+    // Camera angle calculation
+    CAMERA.angle.x = atan2f(dx, dz);                        // Camera angle in plane XZ (0 aligned with Z, move positive CCW)
+    CAMERA.angle.y = atan2f(dy, sqrtf(dx*dx + dz*dz));      // Camera angle in plane XY (0 aligned with X, move positive CW)
+
+    CAMERA.playerEyesPosition = camera.position.y;          // Init player eyes position to camera Y position
+
+    CAMERA.previousMousePosition = GetMousePosition();      // Init mouse position
+
+    // Lock cursor for first person and third person cameras
+    if ((mode == CAMERA_FIRST_PERSON) || (mode == CAMERA_THIRD_PERSON)) DisableCursor();
+    else EnableCursor();
+
+    CAMERA.mode = mode;
+}
+
+// Update camera depending on selected mode
+// NOTE: Camera controls depend on some raylib functions:
+//       System: EnableCursor(), DisableCursor()
+//       Mouse: IsMouseButtonDown(), GetMousePosition(), GetMouseWheelMove()
+//       Keys:  IsKeyDown()
+void UpdateCamera(Camera *camera)
+{
+    static int swingCounter = 0;    // Used for 1st person swinging movement
+
+    // TODO: Compute CAMERA.targetDistance and CAMERA.angle here (?)
+
+    // Mouse movement detection
+    Vector2 mousePositionDelta = { 0.0f, 0.0f };
+    Vector2 mousePosition = GetMousePosition();
+    float mouseWheelMove = GetMouseWheelMove();
+
+    // Keys input detection
+    // TODO: Input detection is raylib-dependant, it could be moved outside the module
+    bool keyPan = IsMouseButtonDown(CAMERA.panControl);
+    bool keyAlt = IsKeyDown(CAMERA.altControl);
+    bool szoomKey = IsKeyDown(CAMERA.smoothZoomControl);
+    bool direction[6] = { IsKeyDown(CAMERA.moveControl[MOVE_FRONT]),
+                          IsKeyDown(CAMERA.moveControl[MOVE_BACK]),
+                          IsKeyDown(CAMERA.moveControl[MOVE_RIGHT]),
+                          IsKeyDown(CAMERA.moveControl[MOVE_LEFT]),
+                          IsKeyDown(CAMERA.moveControl[MOVE_UP]),
+                          IsKeyDown(CAMERA.moveControl[MOVE_DOWN]) };
+
+    if (CAMERA.mode != CAMERA_CUSTOM)
+    {
+        mousePositionDelta.x = mousePosition.x - CAMERA.previousMousePosition.x;
+        mousePositionDelta.y = mousePosition.y - CAMERA.previousMousePosition.y;
+
+        CAMERA.previousMousePosition = mousePosition;
+    }
+
+    // Support for multiple automatic camera modes
+    // NOTE: In case of CAMERA_CUSTOM nothing happens here, user must update it manually
+    switch (CAMERA.mode)
+    {
+        case CAMERA_FREE:           // Camera free controls, using standard 3d-content-creation scheme
+        {
+            // Camera zoom
+            if ((CAMERA.targetDistance < CAMERA_FREE_DISTANCE_MAX_CLAMP) && (mouseWheelMove < 0))
+            {
+                CAMERA.targetDistance -= (mouseWheelMove*CAMERA_MOUSE_SCROLL_SENSITIVITY);
+                if (CAMERA.targetDistance > CAMERA_FREE_DISTANCE_MAX_CLAMP) CAMERA.targetDistance = CAMERA_FREE_DISTANCE_MAX_CLAMP;
+            }
+
+            // Camera looking down
+            else if ((camera->position.y > camera->target.y) && (CAMERA.targetDistance == CAMERA_FREE_DISTANCE_MAX_CLAMP) && (mouseWheelMove < 0))
+            {
+                camera->target.x += mouseWheelMove*(camera->target.x - camera->position.x)*CAMERA_MOUSE_SCROLL_SENSITIVITY/CAMERA.targetDistance;
+                camera->target.y += mouseWheelMove*(camera->target.y - camera->position.y)*CAMERA_MOUSE_SCROLL_SENSITIVITY/CAMERA.targetDistance;
+                camera->target.z += mouseWheelMove*(camera->target.z - camera->position.z)*CAMERA_MOUSE_SCROLL_SENSITIVITY/CAMERA.targetDistance;
+            }
+            else if ((camera->position.y > camera->target.y) && (camera->target.y >= 0))
+            {
+                camera->target.x += mouseWheelMove*(camera->target.x - camera->position.x)*CAMERA_MOUSE_SCROLL_SENSITIVITY/CAMERA.targetDistance;
+                camera->target.y += mouseWheelMove*(camera->target.y - camera->position.y)*CAMERA_MOUSE_SCROLL_SENSITIVITY/CAMERA.targetDistance;
+                camera->target.z += mouseWheelMove*(camera->target.z - camera->position.z)*CAMERA_MOUSE_SCROLL_SENSITIVITY/CAMERA.targetDistance;
+
+                // if (camera->target.y < 0) camera->target.y = -0.001;
+            }
+            else if ((camera->position.y > camera->target.y) && (camera->target.y < 0) && (mouseWheelMove > 0))
+            {
+                CAMERA.targetDistance -= (mouseWheelMove*CAMERA_MOUSE_SCROLL_SENSITIVITY);
+                if (CAMERA.targetDistance < CAMERA_FREE_DISTANCE_MIN_CLAMP) CAMERA.targetDistance = CAMERA_FREE_DISTANCE_MIN_CLAMP;
+            }
+            // Camera looking up
+            else if ((camera->position.y < camera->target.y) && (CAMERA.targetDistance == CAMERA_FREE_DISTANCE_MAX_CLAMP) && (mouseWheelMove < 0))
+            {
+                camera->target.x += mouseWheelMove*(camera->target.x - camera->position.x)*CAMERA_MOUSE_SCROLL_SENSITIVITY/CAMERA.targetDistance;
+                camera->target.y += mouseWheelMove*(camera->target.y - camera->position.y)*CAMERA_MOUSE_SCROLL_SENSITIVITY/CAMERA.targetDistance;
+                camera->target.z += mouseWheelMove*(camera->target.z - camera->position.z)*CAMERA_MOUSE_SCROLL_SENSITIVITY/CAMERA.targetDistance;
+            }
+            else if ((camera->position.y < camera->target.y) && (camera->target.y <= 0))
+            {
+                camera->target.x += mouseWheelMove*(camera->target.x - camera->position.x)*CAMERA_MOUSE_SCROLL_SENSITIVITY/CAMERA.targetDistance;
+                camera->target.y += mouseWheelMove*(camera->target.y - camera->position.y)*CAMERA_MOUSE_SCROLL_SENSITIVITY/CAMERA.targetDistance;
+                camera->target.z += mouseWheelMove*(camera->target.z - camera->position.z)*CAMERA_MOUSE_SCROLL_SENSITIVITY/CAMERA.targetDistance;
+
+                // if (camera->target.y > 0) camera->target.y = 0.001;
+            }
+            else if ((camera->position.y < camera->target.y) && (camera->target.y > 0) && (mouseWheelMove > 0))
+            {
+                CAMERA.targetDistance -= (mouseWheelMove*CAMERA_MOUSE_SCROLL_SENSITIVITY);
+                if (CAMERA.targetDistance < CAMERA_FREE_DISTANCE_MIN_CLAMP) CAMERA.targetDistance = CAMERA_FREE_DISTANCE_MIN_CLAMP;
+            }
+
+            // Input keys checks
+            if (keyPan)
+            {
+                if (keyAlt)     // Alternative key behaviour
+                {
+                    if (szoomKey)
+                    {
+                        // Camera smooth zoom
+                        CAMERA.targetDistance += (mousePositionDelta.y*CAMERA_FREE_SMOOTH_ZOOM_SENSITIVITY);
+                    }
+                    else
+                    {
+                        // Camera rotation
+                        CAMERA.angle.x += mousePositionDelta.x*-CAMERA_FREE_MOUSE_SENSITIVITY;
+                        CAMERA.angle.y += mousePositionDelta.y*-CAMERA_FREE_MOUSE_SENSITIVITY;
+
+                        // Angle clamp
+                        if (CAMERA.angle.y > CAMERA_FREE_MIN_CLAMP*DEG2RAD) CAMERA.angle.y = CAMERA_FREE_MIN_CLAMP*DEG2RAD;
+                        else if (CAMERA.angle.y < CAMERA_FREE_MAX_CLAMP*DEG2RAD) CAMERA.angle.y = CAMERA_FREE_MAX_CLAMP*DEG2RAD;
+                    }
+                }
+                else
+                {
+                    // Camera panning
+                    camera->target.x += ((mousePositionDelta.x*CAMERA_FREE_MOUSE_SENSITIVITY)*cosf(CAMERA.angle.x) + (mousePositionDelta.y*-CAMERA_FREE_MOUSE_SENSITIVITY)*sinf(CAMERA.angle.x)*sinf(CAMERA.angle.y))*(CAMERA.targetDistance/CAMERA_FREE_PANNING_DIVIDER);
+                    camera->target.y += ((mousePositionDelta.y*CAMERA_FREE_MOUSE_SENSITIVITY)*cosf(CAMERA.angle.y))*(CAMERA.targetDistance/CAMERA_FREE_PANNING_DIVIDER);
+                    camera->target.z += ((mousePositionDelta.x*-CAMERA_FREE_MOUSE_SENSITIVITY)*sinf(CAMERA.angle.x) + (mousePositionDelta.y*-CAMERA_FREE_MOUSE_SENSITIVITY)*cosf(CAMERA.angle.x)*sinf(CAMERA.angle.y))*(CAMERA.targetDistance/CAMERA_FREE_PANNING_DIVIDER);
+                }
+            }
+
+            // Update camera position with changes
+            camera->position.x = -sinf(CAMERA.angle.x)*CAMERA.targetDistance*cosf(CAMERA.angle.y) + camera->target.x;
+            camera->position.y = -sinf(CAMERA.angle.y)*CAMERA.targetDistance + camera->target.y;
+            camera->position.z = -cosf(CAMERA.angle.x)*CAMERA.targetDistance*cosf(CAMERA.angle.y) + camera->target.z;
+
+        } break;
+        case CAMERA_ORBITAL:        // Camera just orbits around target, only zoom allowed
+        {
+            CAMERA.angle.x += CAMERA_ORBITAL_SPEED;      // Camera orbit angle
+            CAMERA.targetDistance -= (mouseWheelMove*CAMERA_MOUSE_SCROLL_SENSITIVITY);   // Camera zoom
+
+            // Camera distance clamp
+            if (CAMERA.targetDistance < CAMERA_THIRD_PERSON_DISTANCE_CLAMP) CAMERA.targetDistance = CAMERA_THIRD_PERSON_DISTANCE_CLAMP;
+
+            // Update camera position with changes
+            camera->position.x = sinf(CAMERA.angle.x)*CAMERA.targetDistance*cosf(CAMERA.angle.y) + camera->target.x;
+            camera->position.y = ((CAMERA.angle.y <= 0.0f)? 1 : -1)*sinf(CAMERA.angle.y)*CAMERA.targetDistance*sinf(CAMERA.angle.y) + camera->target.y;
+            camera->position.z = cosf(CAMERA.angle.x)*CAMERA.targetDistance*cosf(CAMERA.angle.y) + camera->target.z;
+
+        } break;
+        case CAMERA_FIRST_PERSON:   // Camera moves as in a first-person game, controls are configurable
+        {
+            camera->position.x += (sinf(CAMERA.angle.x)*direction[MOVE_BACK] -
+                                   sinf(CAMERA.angle.x)*direction[MOVE_FRONT] -
+                                   cosf(CAMERA.angle.x)*direction[MOVE_LEFT] +
+                                   cosf(CAMERA.angle.x)*direction[MOVE_RIGHT])/PLAYER_MOVEMENT_SENSITIVITY;
+
+            camera->position.y += (sinf(CAMERA.angle.y)*direction[MOVE_FRONT] -
+                                   sinf(CAMERA.angle.y)*direction[MOVE_BACK] +
+                                   1.0f*direction[MOVE_UP] - 1.0f*direction[MOVE_DOWN])/PLAYER_MOVEMENT_SENSITIVITY;
+
+            camera->position.z += (cosf(CAMERA.angle.x)*direction[MOVE_BACK] -
+                                   cosf(CAMERA.angle.x)*direction[MOVE_FRONT] +
+                                   sinf(CAMERA.angle.x)*direction[MOVE_LEFT] -
+                                   sinf(CAMERA.angle.x)*direction[MOVE_RIGHT])/PLAYER_MOVEMENT_SENSITIVITY;
+
+            // Camera orientation calculation
+            CAMERA.angle.x += (mousePositionDelta.x*-CAMERA_MOUSE_MOVE_SENSITIVITY);
+            CAMERA.angle.y += (mousePositionDelta.y*-CAMERA_MOUSE_MOVE_SENSITIVITY);
+
+            // Angle clamp
+            if (CAMERA.angle.y > CAMERA_FIRST_PERSON_MIN_CLAMP*DEG2RAD) CAMERA.angle.y = CAMERA_FIRST_PERSON_MIN_CLAMP*DEG2RAD;
+            else if (CAMERA.angle.y < CAMERA_FIRST_PERSON_MAX_CLAMP*DEG2RAD) CAMERA.angle.y = CAMERA_FIRST_PERSON_MAX_CLAMP*DEG2RAD;
+
+            // Calculate translation matrix
+            Matrix matTranslation = { 1.0f, 0.0f, 0.0f, 0.0f,
+                                      0.0f, 1.0f, 0.0f, 0.0f,
+                                      0.0f, 0.0f, 1.0f, (CAMERA.targetDistance/CAMERA_FREE_PANNING_DIVIDER),
+                                      0.0f, 0.0f, 0.0f, 1.0f };
+
+            // Calculate rotation matrix
+            Matrix matRotation = { 1.0f, 0.0f, 0.0f, 0.0f,
+                                   0.0f, 1.0f, 0.0f, 0.0f,
+                                   0.0f, 0.0f, 1.0f, 0.0f,
+                                   0.0f, 0.0f, 0.0f, 1.0f };
+
+            float cosz = cosf(0.0f);
+            float sinz = sinf(0.0f);
+            float cosy = cosf(-(PI*2 - CAMERA.angle.x));
+            float siny = sinf(-(PI*2 - CAMERA.angle.x));
+            float cosx = cosf(-(PI*2 - CAMERA.angle.y));
+            float sinx = sinf(-(PI*2 - CAMERA.angle.y));
+
+            matRotation.m0 = cosz*cosy;
+            matRotation.m4 = (cosz*siny*sinx) - (sinz*cosx);
+            matRotation.m8 = (cosz*siny*cosx) + (sinz*sinx);
+            matRotation.m1 = sinz*cosy;
+            matRotation.m5 = (sinz*siny*sinx) + (cosz*cosx);
+            matRotation.m9 = (sinz*siny*cosx) - (cosz*sinx);
+            matRotation.m2 = -siny;
+            matRotation.m6 = cosy*sinx;
+            matRotation.m10= cosy*cosx;
+
+            // Multiply translation and rotation matrices
+            Matrix matTransform = { 0 };
+            matTransform.m0 = matTranslation.m0*matRotation.m0 + matTranslation.m1*matRotation.m4 + matTranslation.m2*matRotation.m8 + matTranslation.m3*matRotation.m12;
+            matTransform.m1 = matTranslation.m0*matRotation.m1 + matTranslation.m1*matRotation.m5 + matTranslation.m2*matRotation.m9 + matTranslation.m3*matRotation.m13;
+            matTransform.m2 = matTranslation.m0*matRotation.m2 + matTranslation.m1*matRotation.m6 + matTranslation.m2*matRotation.m10 + matTranslation.m3*matRotation.m14;
+            matTransform.m3 = matTranslation.m0*matRotation.m3 + matTranslation.m1*matRotation.m7 + matTranslation.m2*matRotation.m11 + matTranslation.m3*matRotation.m15;
+            matTransform.m4 = matTranslation.m4*matRotation.m0 + matTranslation.m5*matRotation.m4 + matTranslation.m6*matRotation.m8 + matTranslation.m7*matRotation.m12;
+            matTransform.m5 = matTranslation.m4*matRotation.m1 + matTranslation.m5*matRotation.m5 + matTranslation.m6*matRotation.m9 + matTranslation.m7*matRotation.m13;
+            matTransform.m6 = matTranslation.m4*matRotation.m2 + matTranslation.m5*matRotation.m6 + matTranslation.m6*matRotation.m10 + matTranslation.m7*matRotation.m14;
+            matTransform.m7 = matTranslation.m4*matRotation.m3 + matTranslation.m5*matRotation.m7 + matTranslation.m6*matRotation.m11 + matTranslation.m7*matRotation.m15;
+            matTransform.m8 = matTranslation.m8*matRotation.m0 + matTranslation.m9*matRotation.m4 + matTranslation.m10*matRotation.m8 + matTranslation.m11*matRotation.m12;
+            matTransform.m9 = matTranslation.m8*matRotation.m1 + matTranslation.m9*matRotation.m5 + matTranslation.m10*matRotation.m9 + matTranslation.m11*matRotation.m13;
+            matTransform.m10 = matTranslation.m8*matRotation.m2 + matTranslation.m9*matRotation.m6 + matTranslation.m10*matRotation.m10 + matTranslation.m11*matRotation.m14;
+            matTransform.m11 = matTranslation.m8*matRotation.m3 + matTranslation.m9*matRotation.m7 + matTranslation.m10*matRotation.m11 + matTranslation.m11*matRotation.m15;
+            matTransform.m12 = matTranslation.m12*matRotation.m0 + matTranslation.m13*matRotation.m4 + matTranslation.m14*matRotation.m8 + matTranslation.m15*matRotation.m12;
+            matTransform.m13 = matTranslation.m12*matRotation.m1 + matTranslation.m13*matRotation.m5 + matTranslation.m14*matRotation.m9 + matTranslation.m15*matRotation.m13;
+            matTransform.m14 = matTranslation.m12*matRotation.m2 + matTranslation.m13*matRotation.m6 + matTranslation.m14*matRotation.m10 + matTranslation.m15*matRotation.m14;
+            matTransform.m15 = matTranslation.m12*matRotation.m3 + matTranslation.m13*matRotation.m7 + matTranslation.m14*matRotation.m11 + matTranslation.m15*matRotation.m15;
+
+            camera->target.x = camera->position.x - matTransform.m12;
+            camera->target.y = camera->position.y - matTransform.m13;
+            camera->target.z = camera->position.z - matTransform.m14;
+
+            // If movement detected (some key pressed), increase swinging
+            for (int i = 0; i < 6; i++) if (direction[i]) { swingCounter++; break; }
+
+            // Camera position update
+            // NOTE: On CAMERA_FIRST_PERSON player Y-movement is limited to player 'eyes position'
+            camera->position.y = CAMERA.playerEyesPosition - sinf(swingCounter/CAMERA_FIRST_PERSON_STEP_TRIGONOMETRIC_DIVIDER)/CAMERA_FIRST_PERSON_STEP_DIVIDER;
+
+            camera->up.x = sinf(swingCounter/(CAMERA_FIRST_PERSON_STEP_TRIGONOMETRIC_DIVIDER*2))/CAMERA_FIRST_PERSON_WAVING_DIVIDER;
+            camera->up.z = -sinf(swingCounter/(CAMERA_FIRST_PERSON_STEP_TRIGONOMETRIC_DIVIDER*2))/CAMERA_FIRST_PERSON_WAVING_DIVIDER;
+
+        } break;
+        case CAMERA_THIRD_PERSON:   // Camera moves as in a third-person game, following target at a distance, controls are configurable
+        {
+            camera->position.x += (sinf(CAMERA.angle.x)*direction[MOVE_BACK] -
+                                   sinf(CAMERA.angle.x)*direction[MOVE_FRONT] -
+                                   cosf(CAMERA.angle.x)*direction[MOVE_LEFT] +
+                                   cosf(CAMERA.angle.x)*direction[MOVE_RIGHT])/PLAYER_MOVEMENT_SENSITIVITY;
+
+            camera->position.y += (sinf(CAMERA.angle.y)*direction[MOVE_FRONT] -
+                                   sinf(CAMERA.angle.y)*direction[MOVE_BACK] +
+                                   1.0f*direction[MOVE_UP] - 1.0f*direction[MOVE_DOWN])/PLAYER_MOVEMENT_SENSITIVITY;
+
+            camera->position.z += (cosf(CAMERA.angle.x)*direction[MOVE_BACK] -
+                                   cosf(CAMERA.angle.x)*direction[MOVE_FRONT] +
+                                   sinf(CAMERA.angle.x)*direction[MOVE_LEFT] -
+                                   sinf(CAMERA.angle.x)*direction[MOVE_RIGHT])/PLAYER_MOVEMENT_SENSITIVITY;
+
+            // Camera orientation calculation
+            CAMERA.angle.x += (mousePositionDelta.x*-CAMERA_MOUSE_MOVE_SENSITIVITY);
+            CAMERA.angle.y += (mousePositionDelta.y*-CAMERA_MOUSE_MOVE_SENSITIVITY);
+
+            // Angle clamp
+            if (CAMERA.angle.y > CAMERA_THIRD_PERSON_MIN_CLAMP*DEG2RAD) CAMERA.angle.y = CAMERA_THIRD_PERSON_MIN_CLAMP*DEG2RAD;
+            else if (CAMERA.angle.y < CAMERA_THIRD_PERSON_MAX_CLAMP*DEG2RAD) CAMERA.angle.y = CAMERA_THIRD_PERSON_MAX_CLAMP*DEG2RAD;
+
+            // Camera zoom
+            CAMERA.targetDistance -= (mouseWheelMove*CAMERA_MOUSE_SCROLL_SENSITIVITY);
+
+            // Camera distance clamp
+            if (CAMERA.targetDistance < CAMERA_THIRD_PERSON_DISTANCE_CLAMP) CAMERA.targetDistance = CAMERA_THIRD_PERSON_DISTANCE_CLAMP;
+
+            camera->position.x = sinf(CAMERA.angle.x)*CAMERA.targetDistance*cosf(CAMERA.angle.y) + camera->target.x;
+
+            if (CAMERA.angle.y <= 0.0f) camera->position.y = sinf(CAMERA.angle.y)*CAMERA.targetDistance*sinf(CAMERA.angle.y) + camera->target.y;
+            else camera->position.y = -sinf(CAMERA.angle.y)*CAMERA.targetDistance*sinf(CAMERA.angle.y) + camera->target.y;
+
+            camera->position.z = cosf(CAMERA.angle.x)*CAMERA.targetDistance*cosf(CAMERA.angle.y) + camera->target.z;
+
+        } break;
+        case CAMERA_CUSTOM: break;
+        default: break;
+    }
+}
+
+// Set camera pan key to combine with mouse movement (free camera)
+void SetCameraPanControl(int keyPan) { CAMERA.panControl = keyPan; }
+
+// Set camera alt key to combine with mouse movement (free camera)
+void SetCameraAltControl(int keyAlt) { CAMERA.altControl = keyAlt; }
+
+// Set camera smooth zoom key to combine with mouse (free camera)
+void SetCameraSmoothZoomControl(int szoomKey) { CAMERA.smoothZoomControl = szoomKey; }
+
+// Set camera move controls (1st person and 3rd person cameras)
+void SetCameraMoveControls(int keyFront, int keyBack, int keyRight, int keyLeft, int keyUp, int keyDown)
+{
+    CAMERA.moveControl[MOVE_FRONT] = keyFront;
+    CAMERA.moveControl[MOVE_BACK] = keyBack;
+    CAMERA.moveControl[MOVE_RIGHT] = keyRight;
+    CAMERA.moveControl[MOVE_LEFT] = keyLeft;
+    CAMERA.moveControl[MOVE_UP] = keyUp;
+    CAMERA.moveControl[MOVE_DOWN] = keyDown;
+}
+
+#endif // CAMERA_IMPLEMENTATION