mirror of
https://github.com/gwm17/glfw.git
synced 2024-11-29 21:48:52 -05:00
143 lines
3.8 KiB
C
143 lines
3.8 KiB
C
/*========================================================================
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* This is a small test application for GLFW.
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* joystick input test.
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*========================================================================*/
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#include <GL/glfw3.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <math.h>
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#define MAX_AXES 10
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#define MAX_BUTTONS 30
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struct JoystickState
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{
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int present;
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int num_axes;
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int num_buttons;
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float axes[MAX_AXES];
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unsigned char buttons[MAX_BUTTONS];
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};
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static struct JoystickState states[GLFW_JOYSTICK_LAST + 1];
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int running;
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int keyrepeat = 0;
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int systemkeys = 1;
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/*========================================================================
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* Retrieve joystick states
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*========================================================================*/
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static void updateJoysticksState(void)
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{
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int joy;
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for (joy = GLFW_JOYSTICK_1; joy < GLFW_JOYSTICK_LAST + 1; joy++)
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{
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printf("Updating information for joystick %d\n", joy);
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states[joy].present = glfwGetJoystickParam(joy, GLFW_PRESENT);
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if (states[joy].present == GL_TRUE)
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{
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states[joy].num_axes = glfwGetJoystickPos(joy, states[joy].axes, MAX_AXES);
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states[joy].num_buttons = glfwGetJoystickButtons(joy, states[joy].buttons, MAX_BUTTONS);
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}
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}
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}
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/*========================================================================
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* Print out the state of all joysticks on the standard output
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*========================================================================*/
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static void displayJoysticksState(void)
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{
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int joy;
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int i;
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for (joy = GLFW_JOYSTICK_1; joy < GLFW_JOYSTICK_LAST + 1; joy++)
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{
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printf("Joystick %d: %s\n", joy, (states[joy].present == GL_TRUE ? "present" : "not connected"));
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if (states[joy].present == GL_TRUE)
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{
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if (states[joy].num_axes > 0)
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{
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printf(" axes: %.3f", states[joy].axes[0]);
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for (i = 1; i < states[joy].num_axes; i++)
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printf(", %.3f", states[joy].axes[i]);
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printf("\n");
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}
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else
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printf(" axes: none\n");
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if (states[joy].num_buttons > 0)
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{
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printf(" buttons: 00 => %c", ((states[joy].buttons[0] == GLFW_PRESS) ? 'P' : 'R'));
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for (i = 1; i < states[joy].num_buttons; i++)
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printf(", %02d => %c", i, ((states[joy].buttons[i] == GLFW_PRESS) ? 'P' : 'R'));
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printf("\n");
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}
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else
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printf(" buttons: none\n");
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}
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}
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}
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int main(void)
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{
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double start;
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double t;
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double update;
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/* Initialise GLFW */
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if (!glfwInit(NULL))
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{
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fprintf(stderr, "Failed to initialize GLFW: %s\n", glfwErrorString(glfwGetError()));
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exit(EXIT_FAILURE);
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}
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printf("The program will work for 20 seconds and display every seconds the state of the joysticks\n");
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printf("Your computer is going to be very slow as the program is doing an active loop .....\n");
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start = glfwGetTime();
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update = start;
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/* print the initial state of all joysticks */
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updateJoysticksState();
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printf("\n");
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displayJoysticksState();
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running = GL_TRUE;
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/* Main loop */
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while (running)
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{
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/* Get time */
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t = glfwGetTime();
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/* Display the state of all connected joysticks every secons */
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if ((t - update) > 1.0)
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{
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update = t;
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printf("\n");
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updateJoysticksState();
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printf("\n");
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displayJoysticksState();
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}
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/* Check if the window was closed */
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if ((t - start) > 20.0)
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running = GL_FALSE;
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}
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/* Close OpenGL window and terminate GLFW */
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glfwTerminate();
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return 0;
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}
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