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/*
* Copyright 2017 The Emscripten Authors. All rights reserved.
* Emscripten is available under two separate licenses, the MIT license and the
* University of Illinois/NCSA Open Source License. Both these licenses can be
* found in the LICENSE file.
*/
#include <stdio.h>
#include <assert.h>
#include <string.h>
#ifdef __EMSCRIPTEN__
#include <emscripten.h>
#endif
#define GLFW_INCLUDE_ES2
#include <GLFW/glfw3.h>
GLFWwindow* g_window;
void render();
void error_callback(int error, const char* description);
void render() {
glClearColor(0.7f, 0.7f, 0.7f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT);
for (int j = GLFW_JOYSTICK_1; j < GLFW_JOYSTICK_16; ++j) {
int joy = GLFW_JOYSTICK_1 + j;
if (!glfwJoystickPresent(joy)) continue;
static struct {
int axes_count;
float axes[16];
int button_count;
unsigned char buttons[16];
} last_gamepad_state[16] = {0};
const char *name = glfwGetJoystickName(joy);
int axes_count = 0;
const float *axes = glfwGetJoystickAxes(joy, &axes_count);
int button_count = 0;
const unsigned char *buttons = glfwGetJoystickButtons(joy, &button_count);
last_gamepad_state[joy].axes_count = axes_count;
for (int i = 0; i < axes_count; ++i) {
if (last_gamepad_state[joy].axes[i] != axes[i]) {
printf("(%d %s) axis %d = %f\n", joy, name, i, axes[i]);
}
last_gamepad_state[joy].axes[i] = axes[i];
}
last_gamepad_state[joy].button_count = button_count;
for (int i = 0; i < button_count; ++i) {
if (last_gamepad_state[joy].buttons[i] != buttons[i]) {
printf("(%d %s) button %d = %d\n", joy, name, i, buttons[i]);
}
last_gamepad_state[joy].buttons[i] = buttons[i];
}
}
}
void joystick_callback(int joy, int event)
{
if (event == GLFW_CONNECTED) {
printf("Joystick %d was connected: %s\n", joy, glfwGetJoystickName(joy));
} else if (event == GLFW_DISCONNECTED) {
printf("Joystick %d was disconnected\n", joy);
}
}
int main() {
if (!glfwInit())
{
printf("Could not create window. Test failed.\n");
return 1;
}
glfwWindowHint(GLFW_RESIZABLE , 1);
g_window = glfwCreateWindow(600, 450, "GLFW joystick test", NULL, NULL);
if (!g_window)
{
printf("Could not create window. Test failed.\n");
glfwTerminate();
return 1;
}
glfwMakeContextCurrent(g_window);
glfwSetJoystickCallback(joystick_callback);
#ifdef __EMSCRIPTEN__
emscripten_set_main_loop(render, 0, 1);
#else
while (!glfwWindowShouldClose(window)) {
glfwPollEvents();
}
#endif
glfwTerminate();
return 0;
}
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