Dependencies review

Checking some files to be converted to header-only

src/camera.c

@@ -30,7 +30,7 @@
     #include "raylib.h"
 #endif
 
-#include <math.h>
+#include <math.h>               // Required for: sqrt(), sin(), cos()
 
 //----------------------------------------------------------------------------------
 // Defines and Macros

src/gestures.c

@@ -28,19 +28,19 @@
 #if defined(GESTURES_STANDALONE)
     #include "gestures.h"
 #else
-    #include "raylib.h"         // Required for typedef(s): Vector2, Gestures
+    #include "raylib.h"         // Required for: Vector2, Gestures
 #endif
 
-#include <math.h>               // Used for: atan2(), sqrt()
-#include <stdint.h>             // Defines int32_t, int64_t
+#include <math.h>               // Required for: atan2(), sqrt()
+#include <stdint.h>             // Required for: uint64_t
 
 #if defined(_WIN32)
     // Functions required to query time on Windows
     int __stdcall QueryPerformanceCounter(unsigned long long int *lpPerformanceCount);
     int __stdcall QueryPerformanceFrequency(unsigned long long int *lpFrequency);
 #elif defined(__linux)
-    #include <sys/time.h>       // Declares storage size of ‘now’
-    #include <time.h>           // Used for clock functions
+    #include <sys/time.h>       // Required for: timespec
+    #include <time.h>           // Required for: clock_gettime()
 #endif
 
 //----------------------------------------------------------------------------------

src/physac.c

@@ -29,8 +29,8 @@
     #include "raylib.h"
 #endif
 
-#include <stdlib.h>         // Declares malloc() and free() for memory management
-#include <math.h>           // Declares cos(), sin(), abs() and fminf() for math operations
+#include <stdlib.h>         // Required for: malloc(), free()
+#include <math.h>           // Required for: cos(), sin(), abs(), fminf()
 
 //----------------------------------------------------------------------------------
 // Defines and Macros

src/raygui.c

@@ -5,6 +5,13 @@
 *   Initial design by Kevin Gato and Daniel Nicolás
 *   Reviewed by Albert Martos, Ian Eito, Sergio Martinez and Ramon Santamaria (@raysan5)
 *
+*   The following functions from raylib are required for drawing and input reading:
+        GetColor(), GetHexValue() --> Used on SetStyleProperty()
+        MeasureText(), GetDefaultFont()
+        DrawRectangleRec(), DrawRectangle(), DrawText(), DrawLine()
+        GetMousePosition(), (), IsMouseButtonDown(), IsMouseButtonReleased()
+        'FormatText(), IsKeyDown(), 'IsMouseButtonUp()
+*
 *   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.
 *
@@ -22,12 +29,20 @@
 *
 **********************************************************************************************/
 
-#include "raygui.h"
+#define RAYGUI_STANDALONE     // NOTE: To use the raygui module as standalone lib, just uncomment this line
+                              // NOTE: Some external funtions are required for drawing and input management
+
+#if defined(RAYGUI_STANDALONE)
+    #include "raygui.h"
+#else
+    #include "raylib.h"
+#endif
 
-#include <math.h>
-#include <stdio.h>
-#include <stdlib.h>     // Required for malloc(), free()
-#include <string.h>     // Required for strcmp()
+#include <stdio.h>      // Required for: FILE, fopen(), fclose(), fprintf(), feof(), fscanf()
+                        // NOTE: Those functions are only used in SaveGuiStyle() and LoadGuiStyle()
+                        
+#include <stdlib.h>     // Required for: malloc(), free()
+#include <string.h>     // Required for: strcmp()
 
 //----------------------------------------------------------------------------------
 // Defines and Macros
@@ -157,6 +172,21 @@ static int style[NUM_PROPERTIES] = {
 //----------------------------------------------------------------------------------
 static Color ColorMultiply(Color baseColor, float value);
 
+#if defined RAYGUI_STANDALONE
+static Color GetColor(int hexValue);   // Returns a Color struct from hexadecimal value
+static int GetHexValue(Color color);   // Returns hexadecimal value for a Color
+static bool CheckCollisionPointRec(Vector2 point, Rectangle rec);  // Check if point is inside rectangle
+
+// NOTE: raygui depend on some raylib input and drawing functions
+// TODO: Set your own input functions (used in ProcessCamera())
+static Vector2 GetMousePosition() { return (Vector2){ 0.0f, 0.0f }; }
+static int IsMouseButtonDown(int button) { return 0; }
+static int IsMouseButtonPressed(int button) { return 0; }
+static int IsMouseButtonReleased(int button) { return 0; }
+static int IsMouseButtonUp(int button) { return 0; }
+static int IsKeyDown(int key) { return 0; }
+#endif
+
 //----------------------------------------------------------------------------------
 // Module Functions Definition
 //----------------------------------------------------------------------------------
@@ -164,7 +194,7 @@ static Color ColorMultiply(Color baseColor, float value);
 // Label element, show text
 void GuiLabel(Rectangle bounds, const char *text)
 {
-    GuiLabelEx(bounds,text, GetColor(style[LABEL_TEXT_COLOR]), BLANK, BLANK);
+    GuiLabelEx(bounds, text, GetColor(style[LABEL_TEXT_COLOR]), BLANK, BLANK);
 }
 
 // Label element extended, configurable colors
@@ -1051,4 +1081,48 @@ static Color ColorMultiply(Color baseColor, float value)
     multColor.b += (255 - multColor.b)*value;
     
     return multColor;
-}
+}
+
+#if defined (RAYGUI_STANDALONE)
+// Returns a Color struct from hexadecimal value
+static Color GetColor(int hexValue)
+{
+    Color color;
+
+    color.r = (unsigned char)(hexValue >> 24) & 0xFF;
+    color.g = (unsigned char)(hexValue >> 16) & 0xFF;
+    color.b = (unsigned char)(hexValue >> 8) & 0xFF;
+    color.a = (unsigned char)hexValue & 0xFF;
+
+    return color;
+}
+
+// Returns hexadecimal value for a Color
+static int GetHexValue(Color color)
+{
+    return (((int)color.r << 24) | ((int)color.g << 16) | ((int)color.b << 8) | (int)color.a);
+}
+
+// Check if point is inside rectangle
+static bool CheckCollisionPointRec(Vector2 point, Rectangle rec)
+{
+    bool collision = false;
+
+    if ((point.x >= rec.x) && (point.x <= (rec.x + rec.width)) && (point.y >= rec.y) && (point.y <= (rec.y + rec.height))) collision = true;
+
+    return collision;
+}
+
+// Formatting of text with variables to 'embed'
+static const char *FormatText(const char *text, ...)
+{
+    static char buffer[MAX_FORMATTEXT_LENGTH];
+
+    va_list args;
+    va_start(args, text);
+    vsprintf(buffer, text, args);
+    va_end(args);
+
+    return buffer;
+}
+#endif

src/raygui.h

@@ -23,16 +23,55 @@
 #ifndef RAYGUI_H
 #define RAYGUI_H
 
-#include "raylib.h"
+//#include "raylib.h"
 
 //----------------------------------------------------------------------------------
 // Defines and Macros
 //----------------------------------------------------------------------------------
-#define NUM_PROPERTIES  98
+#define NUM_PROPERTIES       98
+
+#define BLANK              (Color){ 0, 0, 0, 0 }           // Blank (Transparent)
+
+#define KEY_LEFT            263
+#define KEY_RIGHT           262
+
+#define MOUSE_LEFT_BUTTON     0
+
 
 //----------------------------------------------------------------------------------
 // Types and Structures Definition
+// NOTE: Some types are required for RAYGUI_STANDALONE usage
 //----------------------------------------------------------------------------------
+#ifndef __cplusplus
+// Boolean type
+    #ifndef true
+        typedef enum { false, true } bool;
+    #endif
+#endif
+
+// Vector2 type
+typedef struct Vector2 {
+    float x;
+    float y;
+} Vector2;
+
+// Color type, RGBA (32bit)
+typedef struct Color {
+    unsigned char r;
+    unsigned char g;
+    unsigned char b;
+    unsigned char a;
+} Color;
+
+// Rectangle type
+typedef struct Rectangle {
+    int x;
+    int y;
+    int width;
+    int height;
+} Rectangle;
+
+// Gui properties enumeration
 typedef enum GuiProperty {
     GLOBAL_BASE_COLOR = 0,
     GLOBAL_BORDER_COLOR,