Improved gamepad support on Raspberry Pi

src/core.c

@@ -96,8 +96,8 @@
     #include <sys/ioctl.h>      // UNIX System call for device-specific input/output operations - ioctl()
     #include <linux/kd.h>       // Linux: KDSKBMODE, K_MEDIUMRAM constants definition
     #include <linux/input.h>    // Linux: Keycodes constants definition (KEY_A, ...)
-    #include <linux/joystick.h>
-
+    #include <linux/joystick.h> // Linux: Joystick support library
+    
     #include "bcm_host.h"       // Raspberry Pi VideoCore IV access functions
 
     #include "EGL/egl.h"        // Khronos EGL library - Native platform display device control functions
@@ -175,6 +175,7 @@ static pthread_t mouseThreadId;                 // Mouse reading thread id
 // Gamepad input variables
 static int gamepadStream[MAX_GAMEPADS] = { -1 };// Gamepad device file descriptor
 static pthread_t gamepadThreadId;               // Gamepad reading thread id
+static char gamepadName[64];                    // Gamepad name holder
 #endif
 
 #if defined(PLATFORM_ANDROID) || defined(PLATFORM_RPI)
@@ -1188,6 +1189,10 @@ const char *GetGamepadName(int gamepad)
 #if defined(PLATFORM_DESKTOP)
     if (gamepadReady[gamepad]) return glfwGetJoystickName(gamepad);
     else return NULL;
+#elif defined(PLATFORM_RPI)
+	if (gamepadReady[gamepad]) ioctl(gamepadStream[gamepad], JSIOCGNAME(64), &gamepadName);
+
+    return gamepadName;
 #else
     return NULL;
 #endif
@@ -1196,6 +1201,11 @@ const char *GetGamepadName(int gamepad)
 // Return gamepad axis count
 int GetGamepadAxisCount(int gamepad)
 {
+#if defined(PLATFORM_RPI)
+    int axisCount = 0;
+    if (gamepadReady[gamepad]) ioctl(gamepadStream[gamepad], JSIOCGAXES, &axisCount);
+    gamepadAxisCount = axisCount;
+#endif
     return gamepadAxisCount;
 }
 
@@ -1939,9 +1949,11 @@ static void PollInputEvents(void)
     // Reset last key pressed registered
     lastKeyPressed = -1;
     
-    // Reset last gamepad button pressed registered
+#if !defined(PLATFORM_RPI)
+    // Reset last gamepad button/axis registered state
     lastGamepadButtonPressed = -1;
     gamepadAxisCount = 0;
+#endif
 
 #if defined(PLATFORM_DESKTOP) || defined(PLATFORM_WEB)
     // Mouse input polling
@@ -2850,6 +2862,7 @@ static void *GamepadThread(void *arg)
                         currentGamepadState[i][gamepadEvent.number] = (int)gamepadEvent.value;
                         
                         if ((int)gamepadEvent.value == 1) lastGamepadButtonPressed = gamepadEvent.number;
+                        else lastGamepadButtonPressed = -1;
                     }
                 }
                 else if (gamepadEvent.type == JS_EVENT_AXIS)

src/raylib.h

@@ -216,8 +216,8 @@
 #define GAMEPAD_PS3_AXIS_LEFT_Y     1
 #define GAMEPAD_PS3_AXIS_RIGHT_X    2
 #define GAMEPAD_PS3_AXIS_RIGHT_Y    5
-#define GAMEPAD_PS3_AXIS_L2         3       // 1.0(not pressed) --> -1.0(completely pressed)
-#define GAMEPAD_PS3_AXIS_R2         4       // 1.0(not pressed) --> -1.0(completely pressed)
+#define GAMEPAD_PS3_AXIS_L2         3       // [1..-1] (pressure-level)
+#define GAMEPAD_PS3_AXIS_R2         4       // [1..-1] (pressure-level)
 
 // Xbox360 USB Controller Buttons
 #define GAMEPAD_XBOX_BUTTON_A       0
@@ -232,27 +232,25 @@
 #define GAMEPAD_XBOX_BUTTON_RIGHT   11
 #define GAMEPAD_XBOX_BUTTON_DOWN    12
 #define GAMEPAD_XBOX_BUTTON_LEFT    13
-#define GAMEPAD_XBOX_BUTTON_HOME    9
+#define GAMEPAD_XBOX_BUTTON_HOME    8
 
 // Xbox360 USB Controller Axis
-#define GAMEPAD_XBOX_AXIS_LEFT_X    0
-#define GAMEPAD_XBOX_AXIS_LEFT_Y    1
-#define GAMEPAD_XBOX_AXIS_RIGHT_X   2
-#define GAMEPAD_XBOX_AXIS_RIGHT_Y   3
-#define GAMEPAD_XBOX_AXIS_LT        4       // -1.0(not pressed) --> 1.0(completely pressed)
-#define GAMEPAD_XBOX_AXIS_RT        5       // -1.0(not pressed) --> 1.0(completely pressed)
-
-/*
+#define GAMEPAD_XBOX_AXIS_LEFT_X    0       // [-1..1] (left->right)
+#define GAMEPAD_XBOX_AXIS_LEFT_Y    1       // [1..-1] (up->down)
+#define GAMEPAD_XBOX_AXIS_RIGHT_X   2       // [-1..1] (left->right)
+#define GAMEPAD_XBOX_AXIS_RIGHT_Y   3       // [1..-1] (up->down)
+#define GAMEPAD_XBOX_AXIS_LT        4       // [-1..1] (pressure-level)
+#define GAMEPAD_XBOX_AXIS_RT        5       // [-1..1] (pressure-level)
+
 // NOTE: For Raspberry Pi, axis must be reconfigured
 #if defined(PLATFORM_RPI)
-    #define GAMEPAD_XBOX_AXIS_LEFT_X    7
-    #define GAMEPAD_XBOX_AXIS_LEFT_Y    6
-    #define GAMEPAD_XBOX_AXIS_RIGHT_X   3
-    #define GAMEPAD_XBOX_AXIS_RIGHT_Y   4
-    #define GAMEPAD_XBOX_AXIS_LT        2
-    #define GAMEPAD_XBOX_AXIS_RT        5
+    #define GAMEPAD_XBOX_AXIS_LEFT_X    0   // [-1..1] (left->right)
+    #define GAMEPAD_XBOX_AXIS_LEFT_Y    1   // [-1..1] (up->down)
+    #define GAMEPAD_XBOX_AXIS_RIGHT_X   3   // [-1..1] (left->right)
+    #define GAMEPAD_XBOX_AXIS_RIGHT_Y   4   // [-1..1] (up->down)
+    #define GAMEPAD_XBOX_AXIS_LT        2   // [-1..1] (pressure-level)
+    #define GAMEPAD_XBOX_AXIS_RT        5   // [-1..1] (pressure-level)
 #endif
-*/
 
 // NOTE: MSC C++ compiler does not support compound literals (C99 feature)
 // Plain structures in C++ (without constructors) can be initialized from { } initializers.