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Add support for multiple gamepads on RPI

This commit is contained in:
Ray 2016-03-17 12:54:36 +01:00
parent 95c1bf9544
commit 49df957058
2 changed files with 65 additions and 45 deletions
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102
src/core.c
View File

@ -116,9 +116,9 @@
#if defined(PLATFORM_RPI)
// Old device inputs system
#define DEFAULT_KEYBOARD_DEV STDIN_FILENO // Standard input
#define DEFAULT_MOUSE_DEV "/dev/input/mouse0"
#define DEFAULT_GAMEPAD_DEV "/dev/input/js0"
#define DEFAULT_KEYBOARD_DEV STDIN_FILENO // Standard input
#define DEFAULT_MOUSE_DEV "/dev/input/mouse0" // Mouse input
#define DEFAULT_GAMEPAD_DEV "/dev/input/js" // Gamepad input (base dev for all gamepads: js0, js1, ...)
// New device input events (evdev) (must be detected)
//#define DEFAULT_KEYBOARD_DEV "/dev/input/eventN"
@ -126,8 +126,10 @@
//#define DEFAULT_GAMEPAD_DEV "/dev/input/eventN"
#define MOUSE_SENSITIVITY 0.8f
#define MAX_GAMEPAD_BUTTONS 11
#define MAX_GAMEPAD_AXIS 5
#define MAX_GAMEPADS 2 // Max number of gamepads supported
#define MAX_GAMEPAD_BUTTONS 11 // Max bumber of buttons supported (per gamepad)
#define MAX_GAMEPAD_AXIS 8 // Max number of axis supported (per gamepad)
#endif
//----------------------------------------------------------------------------------
@ -164,12 +166,12 @@ static bool mouseReady = false; // Flag to know if mouse is read
pthread_t mouseThreadId; // Mouse reading thread id
// Gamepad input variables
static int gamepadStream = -1; // Gamepad device file descriptor
static bool gamepadReady = false; // Flag to know if gamepad is ready
pthread_t gamepadThreadId; // Gamepad reading thread id
static int gamepadStream[MAX_GAMEPADS] = { -1 }; // Gamepad device file descriptor (two gamepads supported)
static bool gamepadReady[MAX_GAMEPADS] = { false }; // Flag to know if gamepad is ready (two gamepads supported)
pthread_t gamepadThreadId; // Gamepad reading thread id
int gamepadButtons[MAX_GAMEPAD_BUTTONS];
float gamepadAxisValues[MAX_GAMEPAD_AXIS];
int gamepadButtons[MAX_GAMEPADS][MAX_GAMEPAD_BUTTONS]; // Gamepad buttons state
float gamepadAxisValues[MAX_GAMEPADS][MAX_GAMEPAD_AXIS]; // Gamepad axis state
#endif
#if defined(PLATFORM_ANDROID) || defined(PLATFORM_RPI)
@ -1168,7 +1170,7 @@ bool IsGamepadAvailable(int gamepad)
bool result = false;
#if defined(PLATFORM_RPI)
if (gamepadReady && (gamepad == 0)) result = true;
if ((gamepad < MAX_GAMEPADS) && gamepadReady[gamepad]) result = true;
#else
if (glfwJoystickPresent(gamepad) == 1) result = true;
#endif
@ -1182,7 +1184,10 @@ float GetGamepadAxisMovement(int gamepad, int axis)
float value = 0;
#if defined(PLATFORM_RPI)
if (axis < MAX_GAMEPAD_AXIS) value = gamepadAxisValues[axis];
if ((gamepad < MAX_GAMEPADS) && gamepadReady[gamepad])
{
if (axis < MAX_GAMEPAD_AXIS) value = gamepadAxisValues[gamepad][axis];
}
#else
const float *axes;
int axisCount = 0;
@ -1219,7 +1224,7 @@ bool IsGamepadButtonDown(int gamepad, int button)
#if defined(PLATFORM_RPI)
// Get gamepad buttons information
if ((gamepad == 0) && (gamepadButtons[button] == 1)) result = true;
if ((gamepad < MAX_GAMEPADS) && gamepadReady[gamepad] && (gamepadButtons[gamepad][button] == 1)) result = true;
else result = false;
#else
const unsigned char *buttons;
@ -1258,7 +1263,7 @@ bool IsGamepadButtonUp(int gamepad, int button)
#if defined(PLATFORM_RPI)
// Get gamepad buttons information
if ((gamepad == 0) && (gamepadButtons[button] == 0)) result = true;
if ((gamepad < MAX_GAMEPADS) && gamepadReady[gamepad] && (gamepadButtons[gamepad][button] == 0)) result = true;
else result = false;
#else
const unsigned char *buttons;
@ -2447,19 +2452,31 @@ static void *MouseThread(void *arg)
// Init gamepad system
static void InitGamepad(void)
{
if ((gamepadStream = open(DEFAULT_GAMEPAD_DEV, O_RDONLY|O_NONBLOCK)) < 0)
char gamepadDev[128] = "";
for (int i = 0; i < MAX_GAMEPADS; i++)
{
TraceLog(WARNING, "Gamepad device could not be opened, no gamepad available");
}
else
{
gamepadReady = true;
sprintf(gamepadDev, "%s%i", DEFAULT_GAMEPAD_DEV, i);
if ((gamepadStream[i] = open(gamepadDev, O_RDONLY|O_NONBLOCK)) < 0)
{
// NOTE: Only show message for first gamepad
if (i == 0) TraceLog(WARNING, "Gamepad device could not be opened, no gamepad available");
}
else
{
gamepadReady[i] = true;
int error = pthread_create(&gamepadThreadId, NULL, &GamepadThread, NULL);
// NOTE: Only create one thread
if (i == 0)
{
int error = pthread_create(&gamepadThreadId, NULL, &GamepadThread, NULL);
if (error != 0) TraceLog(WARNING, "Error creating gamepad input event thread");
else TraceLog(INFO, "Gamepad device initialized successfully");
}
if (error != 0) TraceLog(WARNING, "Error creating gamepad input event thread");
else TraceLog(INFO, "Gamepad device initialized successfully");
}
}
}
}
// Process Gamepad (/dev/input/js0)
@ -2481,29 +2498,32 @@ static void *GamepadThread(void *arg)
while (1)
{
if (read(gamepadStream, &gamepadEvent, sizeof(struct js_event)) == (int)sizeof(struct js_event))
for (int i = 0; i < MAX_GAMEPADS; i++)
{
gamepadEvent.type &= ~JS_EVENT_INIT; // Ignore synthetic events
// Process gamepad events by type
if (gamepadEvent.type == JS_EVENT_BUTTON)
if (read(gamepadStream[i], &gamepadEvent, sizeof(struct js_event)) == (int)sizeof(struct js_event))
{
TraceLog(DEBUG, "Gamepad button: %i, value: %i", gamepadEvent.number, gamepadEvent.value);
gamepadEvent.type &= ~JS_EVENT_INIT; // Ignore synthetic events
if (gamepadEvent.number < MAX_GAMEPAD_BUTTONS)
// Process gamepad events by type
if (gamepadEvent.type == JS_EVENT_BUTTON)
{
// 1 - button pressed, 0 - button released
gamepadButtons[gamepadEvent.number] = (int)gamepadEvent.value;
TraceLog(DEBUG, "Gamepad button: %i, value: %i", gamepadEvent.number, gamepadEvent.value);
if (gamepadEvent.number < MAX_GAMEPAD_BUTTONS)
{
// 1 - button pressed, 0 - button released
gamepadButtons[i][gamepadEvent.number] = (int)gamepadEvent.value;
}
}
}
else if (gamepadEvent.type == JS_EVENT_AXIS)
{
TraceLog(DEBUG, "Gamepad axis: %i, value: %i", gamepadEvent.number, gamepadEvent.value);
if (gamepadEvent.number < MAX_GAMEPAD_AXIS)
else if (gamepadEvent.type == JS_EVENT_AXIS)
{
// NOTE: Scaling of gamepadEvent.value to get values between -1..1
gamepadAxisValues[gamepadEvent.number] = (float)gamepadEvent.value/32768;
TraceLog(DEBUG, "Gamepad axis: %i, value: %i", gamepadEvent.number, gamepadEvent.value);
if (gamepadEvent.number < MAX_GAMEPAD_AXIS)
{
// NOTE: Scaling of gamepadEvent.value to get values between -1..1
gamepadAxisValues[i][gamepadEvent.number] = (float)gamepadEvent.value/32768;
}
}
}
}

8
src/raylib.h
View File

@ -174,8 +174,8 @@
// Gamepad Number
#define GAMEPAD_PLAYER1 0
#define GAMEPAD_PLAYER2 1
#define GAMEPAD_PLAYER3 2
#define GAMEPAD_PLAYER4 3
#define GAMEPAD_PLAYER3 2 // Not supported
#define GAMEPAD_PLAYER4 3 // Not supported
// Gamepad Buttons
// NOTE: Adjusted for a PS3 USB Controller
@ -201,8 +201,8 @@
#define GAMEPAD_XBOX_BUTTON_START 7
#if defined(PLATFORM_RPI)
#define GAMEPAD_XBOX_AXIS_DPAD_X 32
#define GAMEPAD_XBOX_AXIS_DPAD_Y 64
#define GAMEPAD_XBOX_AXIS_DPAD_X 7
#define GAMEPAD_XBOX_AXIS_DPAD_Y 6
#define GAMEPAD_XBOX_AXIS_RIGHT_X 3
#define GAMEPAD_XBOX_AXIS_RIGHT_Y 4
#define GAMEPAD_XBOX_AXIS_LT 2