UnrealXR/raylib
2
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Decoupling camera system module

Browse source 
Camera system can be used as standalone module
This commit is contained in:
raysan5 2015-07-29 21:42:11 +02:00
parent f7acee9221
commit 0b7c2ab183
2 changed files with 207 additions and 157 deletions
Download patch file Download diff file Expand all files Collapse all files

315
src/camera.c
View file

@ -1,8 +1,6 @@
/********************************************************************************************** /**********************************************************************************************
* *
* raylib.camera * raylib Camera System - Camera Modes Setup and Control Functions
*
* Camera Modes Setup and Control Functions
* *
* Copyright (c) 2015 Marc Palau and Ramon Santamaria * Copyright (c) 2015 Marc Palau and Ramon Santamaria
* *
@ -23,7 +21,14 @@
* *
**********************************************************************************************/ **********************************************************************************************/
#include "camera.h" //#define CAMERA_STANDALONE // NOTE: To use the camera module as standalone lib, just uncomment this line
// NOTE: ProcessCamera() should be reviewed to adapt inputs to other systems
#if defined(CAMERA_STANDALONE)
#include "camera.h"
#else
#include "raylib.h"
#endif
#include <math.h> #include <math.h>
@ -49,7 +54,7 @@
//#define FIRST_PERSON_MOUSE_SENSITIVITY 0.003 //#define FIRST_PERSON_MOUSE_SENSITIVITY 0.003
#define FIRST_PERSON_FOCUS_DISTANCE 25 #define FIRST_PERSON_FOCUS_DISTANCE 25
#define FIRST_PERSON_MIN_CLAMP 85 #define FIRST_PERSON_MIN_CLAMP 85
#define FIRST_PERSON_MAX_CLAMP -85 #define FIRST_PERSON_MAX_CLAMP -85
#define FIRST_PERSON_STEP_TRIGONOMETRIC_DIVIDER 5.0 #define FIRST_PERSON_STEP_TRIGONOMETRIC_DIVIDER 5.0
#define FIRST_PERSON_STEP_DIVIDER 30.0 #define FIRST_PERSON_STEP_DIVIDER 30.0
@ -61,7 +66,7 @@
//#define THIRD_PERSON_MOUSE_SENSITIVITY 0.003 //#define THIRD_PERSON_MOUSE_SENSITIVITY 0.003
#define THIRD_PERSON_DISTANCE_CLAMP 1.2 #define THIRD_PERSON_DISTANCE_CLAMP 1.2
#define THIRD_PERSON_MIN_CLAMP 5 #define THIRD_PERSON_MIN_CLAMP 5
#define THIRD_PERSON_MAX_CLAMP -85 #define THIRD_PERSON_MAX_CLAMP -85
#define THIRD_PERSON_OFFSET (Vector3){ 0.4, 0, 0 } #define THIRD_PERSON_OFFSET (Vector3){ 0.4, 0, 0 }
// PLAYER (used by camera) // PLAYER (used by camera)
@ -70,23 +75,27 @@
#define PLAYER_DEPTH 0.4 #define PLAYER_DEPTH 0.4
#define PLAYER_MOVEMENT_DIVIDER 20.0 #define PLAYER_MOVEMENT_DIVIDER 20.0
//----------------------------------------------------------------------------------
// Types and Structures Definition
//----------------------------------------------------------------------------------
// Camera move modes (first person and third person cameras)
typedef enum { MOVE_FRONT = 0, MOVE_LEFT, MOVE_BACK, MOVE_RIGHT, MOVE_UP, MOVE_DOWN } CameraMove;
//---------------------------------------------------------------------------------- //----------------------------------------------------------------------------------
// Global Variables Definition // Global Variables Definition
//---------------------------------------------------------------------------------- //----------------------------------------------------------------------------------
static Camera internalCamera = {{2,0,2},{0,0,0},{0,1,0}}; static Camera internalCamera = {{2,0,2},{0,0,0},{0,1,0}};
static Vector2 cameraAngle = { 0, 0 }; static Vector2 cameraAngle = { 0, 0 };
static float cameraTargetDistance = 5; static float cameraTargetDistance = 5;
static Vector3 resetingPosition = { 0, 0, 0 };
static int resetingKey = 'Z';
static Vector2 cameraMousePosition = { 0, 0 }; static Vector2 cameraMousePosition = { 0, 0 };
static Vector2 cameraMouseVariation = { 0, 0 }; static Vector2 cameraMouseVariation = { 0, 0 };
static float mouseSensitivity = 0.003; static float mouseSensitivity = 0.003;
static int cameraMovementController[6] = { 'W', 'A', 'S', 'D', 'E', 'Q' }; static int cameraMoveControl[6] = { 'W', 'A', 'S', 'D', 'E', 'Q' };
static int cameraMovementCounter = 0; static int cameraMoveCounter = 0;
static bool cameraUseGravity = true; static int cameraUseGravity = 1;
static int pawnControllingKey = MOUSE_MIDDLE_BUTTON; static int panControlKey = 2; // raylib: MOUSE_MIDDLE_BUTTON
static int fnControllingKey = KEY_LEFT_ALT; static int altControlKey = 342; // raylib: KEY_LEFT_ALT
static int smoothZoomControllingKey = KEY_LEFT_CONTROL; static int smoothZoomControlKey = 341; // raylib: KEY_LEFT_CONTROL
static int cameraMode = CAMERA_CUSTOM; static int cameraMode = CAMERA_CUSTOM;
@ -95,6 +104,20 @@ static int cameraMode = CAMERA_CUSTOM;
//---------------------------------------------------------------------------------- //----------------------------------------------------------------------------------
static void ProcessCamera(Camera *camera, Vector3 *playerPosition); static void ProcessCamera(Camera *camera, Vector3 *playerPosition);
#if defined(CAMERA_STANDALONE)
// NOTE: Camera controls depend on some raylib input functions
// TODO: Set your own input functions (used in ProcessCamera())
static Vector2 GetMousePosition() { return (Vector2){ 0, 0}; }
static void SetMousePosition(Vector2 pos) {}
static int IsMouseButtonDown(int button) { return 0;}
static int GetMouseWheelMove() { return 0; }
static int GetScreenWidth() { return 1280; }
static int GetScreenHeight() { return 720; }
static void ShowCursor() {}
static void HideCursor() {}
static int IsKeyDown(int key) { return 0; }
#endif
//---------------------------------------------------------------------------------- //----------------------------------------------------------------------------------
// Module Functions Definition // Module Functions Definition
//---------------------------------------------------------------------------------- //----------------------------------------------------------------------------------
@ -145,48 +168,37 @@ Camera UpdateCamera(Vector3 *position)
return internalCamera; return internalCamera;
} }
void SetCameraMoveControls(int frontKey, int backKey, int leftKey, int rightKey, int upKey, int downKey)
void SetCameraControls(int frontKey, int leftKey, int backKey, int rightKey, int upKey, int downKey)
{ {
cameraMovementController[0] = frontKey; cameraMoveControl[MOVE_FRONT] = frontKey;
cameraMovementController[1] = leftKey; cameraMoveControl[MOVE_LEFT] = leftKey;
cameraMovementController[2] = backKey; cameraMoveControl[MOVE_BACK] = backKey;
cameraMovementController[3] = rightKey; cameraMoveControl[MOVE_RIGHT] = rightKey;
cameraMovementController[4] = upKey; cameraMoveControl[MOVE_UP] = upKey;
cameraMovementController[5] = downKey; cameraMoveControl[MOVE_DOWN] = downKey;
} }
void SetCameraMouseSensitivity(float sensitivity) void SetCameraMouseSensitivity(float sensitivity)
{ {
mouseSensitivity = (sensitivity / 10000.0); mouseSensitivity = (sensitivity / 10000.0);
} }
void SetCameraResetPosition(Vector3 resetPosition) void SetCameraPanControl(int panKey)
{ {
resetingPosition = resetPosition; panControlKey = panKey;
} }
void SetCameraResetControl(int resetKey) void SetCameraAltControl(int altKey)
{ {
resetingKey = resetKey; altControlKey = altKey;
} }
void SetCameraPawnControl(int pawnControlKey) void SetCameraSmoothZoomControl(int szKey)
{ {
pawnControllingKey = pawnControlKey; smoothZoomControlKey = szKey;
} }
void SetCameraFnControl(int fnControlKey) void SetCameraTarget(Vector3 target)
{
fnControllingKey = fnControlKey;
}
void SetCameraSmoothZoomControl(int smoothZoomControlKey)
{
smoothZoomControllingKey = smoothZoomControlKey;
}
void SetCameraOrbitalTarget(Vector3 target)
{ {
internalCamera.target = target; internalCamera.target = target;
} }
@ -197,33 +209,43 @@ void SetCameraOrbitalTarget(Vector3 target)
//---------------------------------------------------------------------------------- //----------------------------------------------------------------------------------
// Process desired camera mode and controls // Process desired camera mode and controls
// NOTE: Camera controls depend on some raylib functions:
// Mouse: GetMousePosition(), SetMousePosition(), IsMouseButtonDown(), GetMouseWheelMove()
// System: GetScreenWidth(), GetScreenHeight(), ShowCursor(), HideCursor()
// Keys: IsKeyDown()
static void ProcessCamera(Camera *camera, Vector3 *playerPosition) static void ProcessCamera(Camera *camera, Vector3 *playerPosition)
{ {
#if defined(PLATFORM_DESKTOP) || defined(PLATFORM_WEB) || defined(PLATFORM_RPI)
// Mouse movement detection // Mouse movement detection
Vector2 mousePosition = GetMousePosition();
int mouseWheelMove = GetMouseWheelMove();
int panKey = IsMouseButtonDown(panControlKey); // bool value
int screenWidth = GetScreenWidth();
int screenHeight = GetScreenHeight();
if ((cameraMode != CAMERA_FREE) && (cameraMode != CAMERA_ORBITAL)) if ((cameraMode != CAMERA_FREE) && (cameraMode != CAMERA_ORBITAL))
{ {
HideCursor(); HideCursor();
if (GetMousePosition().x < GetScreenHeight() / 3) SetMousePosition((Vector2){ GetScreenWidth() - GetScreenHeight() / 3, GetMousePosition().y}); if (mousePosition.x < screenHeight/3) SetMousePosition((Vector2){ screenWidth - screenHeight/3, mousePosition.y});
else if (GetMousePosition().y < GetScreenHeight() / 3) SetMousePosition((Vector2){ GetMousePosition().x, GetScreenHeight() - GetScreenHeight() / 3}); else if (mousePosition.y < screenHeight/3) SetMousePosition((Vector2){ mousePosition.x, screenHeight - screenHeight/3});
else if (GetMousePosition().x > GetScreenWidth() - GetScreenHeight() / 3) SetMousePosition((Vector2) { GetScreenHeight() / 3, GetMousePosition().y}); else if (mousePosition.x > screenWidth - screenHeight/3) SetMousePosition((Vector2) { screenHeight/3, mousePosition.y});
else if (GetMousePosition().y > GetScreenHeight() - GetScreenHeight() / 3) SetMousePosition((Vector2){ GetMousePosition().x, GetScreenHeight() / 3}); else if (mousePosition.y > screenHeight - screenHeight/3) SetMousePosition((Vector2){ mousePosition.x, screenHeight/3});
else else
{ {
cameraMouseVariation.x = GetMousePosition().x - cameraMousePosition.x; cameraMouseVariation.x = mousePosition.x - cameraMousePosition.x;
cameraMouseVariation.y = GetMousePosition().y - cameraMousePosition.y; cameraMouseVariation.y = mousePosition.y - cameraMousePosition.y;
} }
} }
else else
{ {
ShowCursor(); ShowCursor();
cameraMouseVariation.x = GetMousePosition().x - cameraMousePosition.x; cameraMouseVariation.x = mousePosition.x - cameraMousePosition.x;
cameraMouseVariation.y = GetMousePosition().y - cameraMousePosition.y; cameraMouseVariation.y = mousePosition.y - cameraMousePosition.y;
} }
cameraMousePosition = GetMousePosition(); cameraMousePosition = mousePosition;
// Support for multiple automatic camera modes // Support for multiple automatic camera modes
switch (cameraMode) switch (cameraMode)
@ -231,92 +253,93 @@ static void ProcessCamera(Camera *camera, Vector3 *playerPosition)
case CAMERA_FREE: case CAMERA_FREE:
{ {
// Camera zoom // Camera zoom
if ((cameraTargetDistance < FREE_CAMERA_DISTANCE_MAX_CLAMP) && (GetMouseWheelMove() < 0)) if ((cameraTargetDistance < FREE_CAMERA_DISTANCE_MAX_CLAMP) && (mouseWheelMove < 0))
{ {
cameraTargetDistance -= (GetMouseWheelMove() * CAMERA_SCROLL_SENSITIVITY); cameraTargetDistance -= (mouseWheelMove*CAMERA_SCROLL_SENSITIVITY);
if (cameraTargetDistance > FREE_CAMERA_DISTANCE_MAX_CLAMP) cameraTargetDistance = FREE_CAMERA_DISTANCE_MAX_CLAMP; if (cameraTargetDistance > FREE_CAMERA_DISTANCE_MAX_CLAMP) cameraTargetDistance = FREE_CAMERA_DISTANCE_MAX_CLAMP;
} }
// Camera looking down // Camera looking down
else if ((camera->position.y > camera->target.y) && (cameraTargetDistance == FREE_CAMERA_DISTANCE_MAX_CLAMP) && (GetMouseWheelMove() < 0)) else if ((camera->position.y > camera->target.y) && (cameraTargetDistance == FREE_CAMERA_DISTANCE_MAX_CLAMP) && (mouseWheelMove < 0))
{ {
camera->target.x += GetMouseWheelMove() * (camera->target.x - camera->position.x) * CAMERA_SCROLL_SENSITIVITY / cameraTargetDistance; camera->target.x += mouseWheelMove*(camera->target.x - camera->position.x)*CAMERA_SCROLL_SENSITIVITY/cameraTargetDistance;
camera->target.y += GetMouseWheelMove() * (camera->target.y - camera->position.y) * CAMERA_SCROLL_SENSITIVITY / cameraTargetDistance; camera->target.y += mouseWheelMove*(camera->target.y - camera->position.y)*CAMERA_SCROLL_SENSITIVITY/cameraTargetDistance;
camera->target.z += GetMouseWheelMove() * (camera->target.z - camera->position.z) * CAMERA_SCROLL_SENSITIVITY / cameraTargetDistance; camera->target.z += mouseWheelMove*(camera->target.z - camera->position.z)*CAMERA_SCROLL_SENSITIVITY/cameraTargetDistance;
} }
else if ((camera->position.y > camera->target.y) && (camera->target.y >= 0)) else if ((camera->position.y > camera->target.y) && (camera->target.y >= 0))
{ {
camera->target.x += GetMouseWheelMove() * (camera->target.x - camera->position.x) * CAMERA_SCROLL_SENSITIVITY / cameraTargetDistance; camera->target.x += mouseWheelMove*(camera->target.x - camera->position.x)*CAMERA_SCROLL_SENSITIVITY/cameraTargetDistance;
camera->target.y += GetMouseWheelMove() * (camera->target.y - camera->position.y) * CAMERA_SCROLL_SENSITIVITY / cameraTargetDistance; camera->target.y += mouseWheelMove*(camera->target.y - camera->position.y)*CAMERA_SCROLL_SENSITIVITY/cameraTargetDistance;
camera->target.z += GetMouseWheelMove() * (camera->target.z - camera->position.z) * CAMERA_SCROLL_SENSITIVITY / cameraTargetDistance; camera->target.z += mouseWheelMove*(camera->target.z - camera->position.z)*CAMERA_SCROLL_SENSITIVITY/cameraTargetDistance;
if (camera->target.y < 0) camera->target.y = -0.001; if (camera->target.y < 0) camera->target.y = -0.001;
} }
else if ((camera->position.y > camera->target.y) && (camera->target.y < 0) && (GetMouseWheelMove() > 0)) else if ((camera->position.y > camera->target.y) && (camera->target.y < 0) && (mouseWheelMove > 0))
{ {
cameraTargetDistance -= (GetMouseWheelMove() * CAMERA_SCROLL_SENSITIVITY); cameraTargetDistance -= (mouseWheelMove*CAMERA_SCROLL_SENSITIVITY);
if (cameraTargetDistance < FREE_CAMERA_DISTANCE_MIN_CLAMP) cameraTargetDistance = FREE_CAMERA_DISTANCE_MIN_CLAMP; if (cameraTargetDistance < FREE_CAMERA_DISTANCE_MIN_CLAMP) cameraTargetDistance = FREE_CAMERA_DISTANCE_MIN_CLAMP;
} }
// Camera looking up // Camera looking up
else if ((camera->position.y < camera->target.y) && (cameraTargetDistance == FREE_CAMERA_DISTANCE_MAX_CLAMP) && (GetMouseWheelMove() < 0)) else if ((camera->position.y < camera->target.y) && (cameraTargetDistance == FREE_CAMERA_DISTANCE_MAX_CLAMP) && (mouseWheelMove < 0))
{ {
camera->target.x += GetMouseWheelMove() * (camera->target.x - camera->position.x) * CAMERA_SCROLL_SENSITIVITY / cameraTargetDistance; camera->target.x += mouseWheelMove*(camera->target.x - camera->position.x)*CAMERA_SCROLL_SENSITIVITY/cameraTargetDistance;
camera->target.y += GetMouseWheelMove() * (camera->target.y - camera->position.y) * CAMERA_SCROLL_SENSITIVITY / cameraTargetDistance; camera->target.y += mouseWheelMove*(camera->target.y - camera->position.y)*CAMERA_SCROLL_SENSITIVITY/cameraTargetDistance;
camera->target.z += GetMouseWheelMove() * (camera->target.z - camera->position.z) * CAMERA_SCROLL_SENSITIVITY / cameraTargetDistance; camera->target.z += mouseWheelMove*(camera->target.z - camera->position.z)*CAMERA_SCROLL_SENSITIVITY/cameraTargetDistance;
} }
else if ((camera->position.y < camera->target.y) && (camera->target.y <= 0)) else if ((camera->position.y < camera->target.y) && (camera->target.y <= 0))
{ {
camera->target.x += GetMouseWheelMove() * (camera->target.x - camera->position.x) * CAMERA_SCROLL_SENSITIVITY / cameraTargetDistance; camera->target.x += mouseWheelMove*(camera->target.x - camera->position.x)*CAMERA_SCROLL_SENSITIVITY/cameraTargetDistance;
camera->target.y += GetMouseWheelMove() * (camera->target.y - camera->position.y) * CAMERA_SCROLL_SENSITIVITY / cameraTargetDistance; camera->target.y += mouseWheelMove*(camera->target.y - camera->position.y)*CAMERA_SCROLL_SENSITIVITY/cameraTargetDistance;
camera->target.z += GetMouseWheelMove() * (camera->target.z - camera->position.z) * CAMERA_SCROLL_SENSITIVITY / cameraTargetDistance; camera->target.z += mouseWheelMove*(camera->target.z - camera->position.z)*CAMERA_SCROLL_SENSITIVITY/cameraTargetDistance;
if (camera->target.y > 0) camera->target.y = 0.001; if (camera->target.y > 0) camera->target.y = 0.001;
} }
else if ((camera->position.y < camera->target.y) && (camera->target.y > 0) && (GetMouseWheelMove() > 0)) else if ((camera->position.y < camera->target.y) && (camera->target.y > 0) && (mouseWheelMove > 0))
{ {
cameraTargetDistance -= (GetMouseWheelMove() * CAMERA_SCROLL_SENSITIVITY); cameraTargetDistance -= (mouseWheelMove * CAMERA_SCROLL_SENSITIVITY);
if (cameraTargetDistance < FREE_CAMERA_DISTANCE_MIN_CLAMP) cameraTargetDistance = FREE_CAMERA_DISTANCE_MIN_CLAMP; if (cameraTargetDistance < FREE_CAMERA_DISTANCE_MIN_CLAMP) cameraTargetDistance = FREE_CAMERA_DISTANCE_MIN_CLAMP;
} }
// Inputs // Inputs
if (IsKeyDown(fnControllingKey)) if (IsKeyDown(altControlKey))
{ {
if (IsKeyDown(smoothZoomControllingKey)) if (IsKeyDown(smoothZoomControlKey))
{ {
// Camera smooth zoom // Camera smooth zoom
if (IsMouseButtonDown(pawnControllingKey)) cameraTargetDistance += (cameraMouseVariation.y * FREE_CAMERA_SMOOTH_ZOOM_SENSITIVITY); if (panKey) cameraTargetDistance += (cameraMouseVariation.y*FREE_CAMERA_SMOOTH_ZOOM_SENSITIVITY);
} }
// Camera orientation calculation // Camera orientation calculation
else if (IsMouseButtonDown(pawnControllingKey)) else if (panKey)
{ {
// Camera orientation calculation // Camera orientation calculation
// Get the mouse sensitivity // Get the mouse sensitivity
cameraAngle.x += cameraMouseVariation.x * -FREE_CAMERA_MOUSE_SENSITIVITY; cameraAngle.x += cameraMouseVariation.x*-FREE_CAMERA_MOUSE_SENSITIVITY;
cameraAngle.y += cameraMouseVariation.y * -FREE_CAMERA_MOUSE_SENSITIVITY; cameraAngle.y += cameraMouseVariation.y*-FREE_CAMERA_MOUSE_SENSITIVITY;
// Angle clamp // Angle clamp
if (cameraAngle.y > FREE_CAMERA_MIN_CLAMP * DEG2RAD) cameraAngle.y = FREE_CAMERA_MIN_CLAMP * DEG2RAD; if (cameraAngle.y > FREE_CAMERA_MIN_CLAMP*DEG2RAD) cameraAngle.y = FREE_CAMERA_MIN_CLAMP*DEG2RAD;
else if (cameraAngle.y < FREE_CAMERA_MAX_CLAMP * DEG2RAD) cameraAngle.y = FREE_CAMERA_MAX_CLAMP * DEG2RAD; else if (cameraAngle.y < FREE_CAMERA_MAX_CLAMP*DEG2RAD) cameraAngle.y = FREE_CAMERA_MAX_CLAMP*DEG2RAD;
} }
} }
// Paning // Paning
else if (IsMouseButtonDown(pawnControllingKey)) else if (panKey)
{ {
camera->target.x += ((cameraMouseVariation.x * -FREE_CAMERA_MOUSE_SENSITIVITY) * cos(cameraAngle.x) + (cameraMouseVariation.y * FREE_CAMERA_MOUSE_SENSITIVITY) * sin(cameraAngle.x) * sin(cameraAngle.y)) * (cameraTargetDistance / FREE_CAMERA_PANNING_DIVIDER); camera->target.x += ((cameraMouseVariation.x*-FREE_CAMERA_MOUSE_SENSITIVITY)*cos(cameraAngle.x) + (cameraMouseVariation.y*FREE_CAMERA_MOUSE_SENSITIVITY)*sin(cameraAngle.x)*sin(cameraAngle.y))*(cameraTargetDistance/FREE_CAMERA_PANNING_DIVIDER);
camera->target.y += ((cameraMouseVariation.y * FREE_CAMERA_MOUSE_SENSITIVITY) * cos(cameraAngle.y)) * (cameraTargetDistance / FREE_CAMERA_PANNING_DIVIDER); camera->target.y += ((cameraMouseVariation.y*FREE_CAMERA_MOUSE_SENSITIVITY)*cos(cameraAngle.y))*(cameraTargetDistance/FREE_CAMERA_PANNING_DIVIDER);
camera->target.z += ((cameraMouseVariation.x * FREE_CAMERA_MOUSE_SENSITIVITY) * sin(cameraAngle.x) + (cameraMouseVariation.y * FREE_CAMERA_MOUSE_SENSITIVITY) * cos(cameraAngle.x) * sin(cameraAngle.y)) * (cameraTargetDistance / FREE_CAMERA_PANNING_DIVIDER); camera->target.z += ((cameraMouseVariation.x*FREE_CAMERA_MOUSE_SENSITIVITY)*sin(cameraAngle.x) + (cameraMouseVariation.y*FREE_CAMERA_MOUSE_SENSITIVITY)*cos(cameraAngle.x)*sin(cameraAngle.y))*(cameraTargetDistance/FREE_CAMERA_PANNING_DIVIDER);
} }
// Focus to center // Focus to center
if (IsKeyDown(resetingKey)) camera->target = resetingPosition; // TODO: Move this function out of the module?
if (IsKeyDown('Z')) camera->target = (Vector3){ 0, 0, 0 };
// Camera position update // Camera position update
camera->position.x = sin(cameraAngle.x) * cameraTargetDistance * cos(cameraAngle.y) + camera->target.x; camera->position.x = sin(cameraAngle.x)*cameraTargetDistance*cos(cameraAngle.y) + camera->target.x;
if (cameraAngle.y <= 0) camera->position.y = sin(cameraAngle.y) * cameraTargetDistance * sin(cameraAngle.y) + camera->target.y; if (cameraAngle.y <= 0) camera->position.y = sin(cameraAngle.y)*cameraTargetDistance*sin(cameraAngle.y) + camera->target.y;
else camera->position.y = -sin(cameraAngle.y) * cameraTargetDistance * sin(cameraAngle.y) + camera->target.y; else camera->position.y = -sin(cameraAngle.y)*cameraTargetDistance*sin(cameraAngle.y) + camera->target.y;
camera->position.z = cos(cameraAngle.x) * cameraTargetDistance * cos(cameraAngle.y) + camera->target.z; camera->position.z = cos(cameraAngle.x)*cameraTargetDistance*cos(cameraAngle.y) + camera->target.z;
} break; } break;
case CAMERA_ORBITAL: case CAMERA_ORBITAL:
@ -324,126 +347,126 @@ static void ProcessCamera(Camera *camera, Vector3 *playerPosition)
cameraAngle.x += ORBITAL_CAMERA_SPEED; cameraAngle.x += ORBITAL_CAMERA_SPEED;
// Camera zoom // Camera zoom
cameraTargetDistance -= (GetMouseWheelMove() * CAMERA_SCROLL_SENSITIVITY); cameraTargetDistance -= (mouseWheelMove*CAMERA_SCROLL_SENSITIVITY);
// Camera distance clamp // Camera distance clamp
if (cameraTargetDistance < THIRD_PERSON_DISTANCE_CLAMP) cameraTargetDistance = THIRD_PERSON_DISTANCE_CLAMP; if (cameraTargetDistance < THIRD_PERSON_DISTANCE_CLAMP) cameraTargetDistance = THIRD_PERSON_DISTANCE_CLAMP;
// Focus to center // Focus to center
if (IsKeyDown('Z')) camera->target = (Vector3) { 0, 0, 0 }; if (IsKeyDown('Z')) camera->target = (Vector3){ 0, 0, 0 };
// Camera position update // Camera position update
camera->position.x = sin(cameraAngle.x) * cameraTargetDistance * cos(cameraAngle.y) + camera->target.x; camera->position.x = sin(cameraAngle.x)*cameraTargetDistance*cos(cameraAngle.y) + camera->target.x;
if (cameraAngle.y <= 0) camera->position.y = sin(cameraAngle.y) * cameraTargetDistance * sin(cameraAngle.y) + camera->target.y; if (cameraAngle.y <= 0) camera->position.y = sin(cameraAngle.y)*cameraTargetDistance*sin(cameraAngle.y) + camera->target.y;
else camera->position.y = -sin(cameraAngle.y) * cameraTargetDistance * sin(cameraAngle.y) + camera->target.y; else camera->position.y = -sin(cameraAngle.y)*cameraTargetDistance*sin(cameraAngle.y) + camera->target.y;
camera->position.z = cos(cameraAngle.x) * cameraTargetDistance * cos(cameraAngle.y) + camera->target.z; camera->position.z = cos(cameraAngle.x)*cameraTargetDistance*cos(cameraAngle.y) + camera->target.z;
} break; } break;
case CAMERA_FIRST_PERSON: case CAMERA_FIRST_PERSON:
case CAMERA_THIRD_PERSON: case CAMERA_THIRD_PERSON:
{ {
bool isMoving = false; int isMoving = 0;
// Keyboard inputs // Keyboard inputs
if (IsKeyDown(cameraMovementController[0])) if (IsKeyDown(cameraMoveControl[MOVE_FRONT]))
{ {
playerPosition->x -= sin(cameraAngle.x) / PLAYER_MOVEMENT_DIVIDER; playerPosition->x -= sin(cameraAngle.x)/PLAYER_MOVEMENT_DIVIDER;
playerPosition->z -= cos(cameraAngle.x) / PLAYER_MOVEMENT_DIVIDER; playerPosition->z -= cos(cameraAngle.x)/PLAYER_MOVEMENT_DIVIDER;
if (!cameraUseGravity) camera->position.y += sin(cameraAngle.y) / PLAYER_MOVEMENT_DIVIDER;
if (!cameraUseGravity) camera->position.y += sin(cameraAngle.y)/PLAYER_MOVEMENT_DIVIDER;
isMoving = true; isMoving = 1;
} }
else if (IsKeyDown(cameraMovementController[2])) else if (IsKeyDown(cameraMoveControl[MOVE_BACK]))
{ {
playerPosition->x += sin(cameraAngle.x) / PLAYER_MOVEMENT_DIVIDER; playerPosition->x += sin(cameraAngle.x)/PLAYER_MOVEMENT_DIVIDER;
playerPosition->z += cos(cameraAngle.x) / PLAYER_MOVEMENT_DIVIDER; playerPosition->z += cos(cameraAngle.x)/PLAYER_MOVEMENT_DIVIDER;
if (!cameraUseGravity) camera->position.y -= sin(cameraAngle.y) / PLAYER_MOVEMENT_DIVIDER;
if (!cameraUseGravity) camera->position.y -= sin(cameraAngle.y)/PLAYER_MOVEMENT_DIVIDER;
isMoving = true; isMoving = 1;
} }
if (IsKeyDown(cameraMovementController[1])) if (IsKeyDown(cameraMoveControl[MOVE_LEFT]))
{ {
playerPosition->x -= cos(cameraAngle.x) / PLAYER_MOVEMENT_DIVIDER; playerPosition->x -= cos(cameraAngle.x)/PLAYER_MOVEMENT_DIVIDER;
playerPosition->z += sin(cameraAngle.x) / PLAYER_MOVEMENT_DIVIDER; playerPosition->z += sin(cameraAngle.x)/PLAYER_MOVEMENT_DIVIDER;
isMoving = true; isMoving = 1;
} }
else if (IsKeyDown(cameraMovementController[3])) else if (IsKeyDown(cameraMoveControl[MOVE_RIGHT]))
{ {
playerPosition->x += cos(cameraAngle.x) / PLAYER_MOVEMENT_DIVIDER; playerPosition->x += cos(cameraAngle.x)/PLAYER_MOVEMENT_DIVIDER;
playerPosition->z -= sin(cameraAngle.x) / PLAYER_MOVEMENT_DIVIDER; playerPosition->z -= sin(cameraAngle.x)/PLAYER_MOVEMENT_DIVIDER;
isMoving = true; isMoving = 1;
} }
if (IsKeyDown(cameraMovementController[4])) if (IsKeyDown(cameraMoveControl[MOVE_UP]))
{ {
if (!cameraUseGravity) playerPosition->y += 1 / PLAYER_MOVEMENT_DIVIDER; if (!cameraUseGravity) playerPosition->y += 1/PLAYER_MOVEMENT_DIVIDER;
} }
else if (IsKeyDown(cameraMovementController[5])) else if (IsKeyDown(cameraMoveControl[MOVE_DOWN]))
{ {
if (!cameraUseGravity) playerPosition->y -= 1 / PLAYER_MOVEMENT_DIVIDER; if (!cameraUseGravity) playerPosition->y -= 1/PLAYER_MOVEMENT_DIVIDER;
} }
if (cameraMode == CAMERA_THIRD_PERSON) if (cameraMode == CAMERA_THIRD_PERSON)
{ {
// Camera orientation calculation // Camera orientation calculation
// Get the mouse sensitivity cameraAngle.x += cameraMouseVariation.x*-mouseSensitivity;
cameraAngle.x += cameraMouseVariation.x * -mouseSensitivity; cameraAngle.y += cameraMouseVariation.y*-mouseSensitivity;
cameraAngle.y += cameraMouseVariation.y * -mouseSensitivity;
// Angle clamp // Angle clamp
if (cameraAngle.y > THIRD_PERSON_MIN_CLAMP * DEG2RAD) cameraAngle.y = THIRD_PERSON_MIN_CLAMP * DEG2RAD; if (cameraAngle.y > THIRD_PERSON_MIN_CLAMP*DEG2RAD) cameraAngle.y = THIRD_PERSON_MIN_CLAMP*DEG2RAD;
else if (cameraAngle.y < THIRD_PERSON_MAX_CLAMP * DEG2RAD) cameraAngle.y = THIRD_PERSON_MAX_CLAMP * DEG2RAD; else if (cameraAngle.y < THIRD_PERSON_MAX_CLAMP*DEG2RAD) cameraAngle.y = THIRD_PERSON_MAX_CLAMP*DEG2RAD;
// Camera zoom // Camera zoom
cameraTargetDistance -= (GetMouseWheelMove() * CAMERA_SCROLL_SENSITIVITY); cameraTargetDistance -= (mouseWheelMove*CAMERA_SCROLL_SENSITIVITY);
// Camera distance clamp // Camera distance clamp
if (cameraTargetDistance < THIRD_PERSON_DISTANCE_CLAMP) cameraTargetDistance = THIRD_PERSON_DISTANCE_CLAMP; if (cameraTargetDistance < THIRD_PERSON_DISTANCE_CLAMP) cameraTargetDistance = THIRD_PERSON_DISTANCE_CLAMP;
// Camera is always looking at player // Camera is always looking at player
camera->target.x = playerPosition->x + THIRD_PERSON_OFFSET.x * cos(cameraAngle.x) + THIRD_PERSON_OFFSET.z * sin(cameraAngle.x); camera->target.x = playerPosition->x + THIRD_PERSON_OFFSET.x*cos(cameraAngle.x) + THIRD_PERSON_OFFSET.z*sin(cameraAngle.x);
camera->target.y = playerPosition->y + PLAYER_HEIGHT * FIRST_PERSON_HEIGHT_RELATIVE_EYES_POSITION + THIRD_PERSON_OFFSET.y; camera->target.y = playerPosition->y + PLAYER_HEIGHT*FIRST_PERSON_HEIGHT_RELATIVE_EYES_POSITION + THIRD_PERSON_OFFSET.y;
camera->target.z = playerPosition->z + THIRD_PERSON_OFFSET.z * sin(cameraAngle.x) - THIRD_PERSON_OFFSET.x * sin(cameraAngle.x); camera->target.z = playerPosition->z + THIRD_PERSON_OFFSET.z*sin(cameraAngle.x) - THIRD_PERSON_OFFSET.x*sin(cameraAngle.x);
// Camera position update // Camera position update
camera->position.x = sin(cameraAngle.x) * cameraTargetDistance * cos(cameraAngle.y) + camera->target.x; camera->position.x = sin(cameraAngle.x)*cameraTargetDistance*cos(cameraAngle.y) + camera->target.x;
if (cameraAngle.y <= 0) camera->position.y = sin(cameraAngle.y) * cameraTargetDistance * sin(cameraAngle.y) + camera->target.y; if (cameraAngle.y <= 0) camera->position.y = sin(cameraAngle.y)*cameraTargetDistance*sin(cameraAngle.y) + camera->target.y;
else camera->position.y = -sin(cameraAngle.y) * cameraTargetDistance * sin(cameraAngle.y) + camera->target.y; else camera->position.y = -sin(cameraAngle.y)*cameraTargetDistance*sin(cameraAngle.y) + camera->target.y;
camera->position.z = cos(cameraAngle.x) * cameraTargetDistance * cos(cameraAngle.y) + camera->target.z; camera->position.z = cos(cameraAngle.x)*cameraTargetDistance*cos(cameraAngle.y) + camera->target.z;
} }
else else // CAMERA_FIRST_PERSON
{ {
if (isMoving) cameraMovementCounter++; if (isMoving) cameraMoveCounter++;
// Camera orientation calculation // Camera orientation calculation
// Get the mouse sensitivity cameraAngle.x += cameraMouseVariation.x*-mouseSensitivity;
cameraAngle.x += cameraMouseVariation.x * -mouseSensitivity; cameraAngle.y += cameraMouseVariation.y*-mouseSensitivity;
cameraAngle.y += cameraMouseVariation.y * -mouseSensitivity;
// Angle clamp // Angle clamp
if (cameraAngle.y > FIRST_PERSON_MIN_CLAMP * DEG2RAD) cameraAngle.y = FIRST_PERSON_MIN_CLAMP * DEG2RAD; if (cameraAngle.y > FIRST_PERSON_MIN_CLAMP*DEG2RAD) cameraAngle.y = FIRST_PERSON_MIN_CLAMP*DEG2RAD;
else if (cameraAngle.y < FIRST_PERSON_MAX_CLAMP * DEG2RAD) cameraAngle.y = FIRST_PERSON_MAX_CLAMP * DEG2RAD; else if (cameraAngle.y < FIRST_PERSON_MAX_CLAMP*DEG2RAD) cameraAngle.y = FIRST_PERSON_MAX_CLAMP*DEG2RAD;
// Camera is always looking at player // Camera is always looking at player
camera->target.x = camera->position.x - sin(cameraAngle.x) * FIRST_PERSON_FOCUS_DISTANCE; camera->target.x = camera->position.x - sin(cameraAngle.x)*FIRST_PERSON_FOCUS_DISTANCE;
camera->target.y = camera->position.y + sin(cameraAngle.y) * FIRST_PERSON_FOCUS_DISTANCE; camera->target.y = camera->position.y + sin(cameraAngle.y)*FIRST_PERSON_FOCUS_DISTANCE;
camera->target.z = camera->position.z - cos(cameraAngle.x) * FIRST_PERSON_FOCUS_DISTANCE; camera->target.z = camera->position.z - cos(cameraAngle.x)*FIRST_PERSON_FOCUS_DISTANCE;
camera->position.x = playerPosition->x; camera->position.x = playerPosition->x;
camera->position.y = (playerPosition->y + PLAYER_HEIGHT * FIRST_PERSON_HEIGHT_RELATIVE_EYES_POSITION) - sin(cameraMovementCounter / FIRST_PERSON_STEP_TRIGONOMETRIC_DIVIDER) / FIRST_PERSON_STEP_DIVIDER; camera->position.y = (playerPosition->y + PLAYER_HEIGHT*FIRST_PERSON_HEIGHT_RELATIVE_EYES_POSITION) - sin(cameraMoveCounter/FIRST_PERSON_STEP_TRIGONOMETRIC_DIVIDER)/FIRST_PERSON_STEP_DIVIDER;
camera->position.z = playerPosition->z; camera->position.z = playerPosition->z;
camera->up.x = sin(cameraMovementCounter / (FIRST_PERSON_STEP_TRIGONOMETRIC_DIVIDER * 2)) / FIRST_PERSON_WAVING_DIVIDER; camera->up.x = sin(cameraMoveCounter/(FIRST_PERSON_STEP_TRIGONOMETRIC_DIVIDER*2))/FIRST_PERSON_WAVING_DIVIDER;
camera->up.z = -sin(cameraMovementCounter / (FIRST_PERSON_STEP_TRIGONOMETRIC_DIVIDER * 2)) / FIRST_PERSON_WAVING_DIVIDER; camera->up.z = -sin(cameraMoveCounter/(FIRST_PERSON_STEP_TRIGONOMETRIC_DIVIDER*2))/FIRST_PERSON_WAVING_DIVIDER;
} }
} break; } break;
default: break; default: break;
} }
#endif }
}

49
src/camera.h
View file

@ -24,7 +24,12 @@
#ifndef CAMERA_H #ifndef CAMERA_H
#define CAMERA_H #define CAMERA_H
#include "raylib.h" #ifndef PI
#define PI 3.14159265358979323846
#endif
#define DEG2RAD (PI / 180.0f)
#define RAD2DEG (180.0f / PI)
//---------------------------------------------------------------------------------- //----------------------------------------------------------------------------------
// Defines and Macros // Defines and Macros
@ -33,10 +38,30 @@
//---------------------------------------------------------------------------------- //----------------------------------------------------------------------------------
// Types and Structures Definition // Types and Structures Definition
// NOTE: Below types are required for CAMERA_STANDALONE usage
//---------------------------------------------------------------------------------- //----------------------------------------------------------------------------------
// Camera modes // Camera modes
typedef enum { CAMERA_CUSTOM = 0, CAMERA_FREE, CAMERA_ORBITAL, CAMERA_FIRST_PERSON, CAMERA_THIRD_PERSON } CameraMode; typedef enum { CAMERA_CUSTOM = 0, CAMERA_FREE, CAMERA_ORBITAL, CAMERA_FIRST_PERSON, CAMERA_THIRD_PERSON } CameraMode;
// 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 Camera {
Vector3 position;
Vector3 target;
Vector3 up;
} Camera;
#ifdef __cplusplus #ifdef __cplusplus
extern "C" { // Prevents name mangling of functions extern "C" { // Prevents name mangling of functions
@ -50,17 +75,19 @@ extern "C" { // Prevents name mangling of functions
//---------------------------------------------------------------------------------- //----------------------------------------------------------------------------------
// Module Functions Declaration // Module Functions Declaration
//---------------------------------------------------------------------------------- //----------------------------------------------------------------------------------
void SetCameraMode(int mode); // Select camera mode (multiple camera modes available) void SetCameraMode(int mode); // Set camera mode (multiple camera modes available)
Camera UpdateCamera(Vector3 *position); // Update camera with position Camera UpdateCamera(Vector3 *playerPosition); // Update camera and player position (1st person and 3rd person cameras)
void SetCameraControls(int front, int left, int back, int right, int up, int down); void SetCameraMoveControls(int frontKey, int backKey,
void SetCameraMouseSensitivity(float sensitivity); int leftKey, int rightKey,
void SetCameraResetPosition(Vector3 resetPosition); int upKey, int downKey); // Set camera move controls (1st person and 3rd person cameras)
void SetCameraResetControl(int resetKey);
void SetCameraPawnControl(int pawnControlKey); void SetCameraPanControl(int panKey); // Set camera pan key to combine with mouse movement (free camera)
void SetCameraFnControl(int fnControlKey); void SetCameraAltControl(int altKey); // Set camera alt key to combine with mouse movement (free camera)
void SetCameraSmoothZoomControl(int smoothZoomControlKey); void SetCameraSmoothZoomControl(int szKey); // Set camera smooth zoom key to combine with mouse (free camera)
void SetCameraOrbitalTarget(Vector3 target);
void SetCameraMouseSensitivity(float sensitivity); // Set camera mouse sensitivity (1st person and 3rd person cameras)
void SetCameraTarget(Vector3 target); // Set internal camera target
#ifdef __cplusplus #ifdef __cplusplus
} }