glfw/tests/joysticks.c
2017-02-07 19:12:22 +01:00

212 lines
5.9 KiB
C

//========================================================================
// Joystick input test
// Copyright (c) Camilla Löwy <elmindreda@glfw.org>
//
// 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.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
// claim that you wrote the original software. If you use this software
// in a product, an acknowledgment in the product documentation would
// be appreciated but is not required.
//
// 2. Altered source versions must be plainly marked as such, and must not
// be misrepresented as being the original software.
//
// 3. This notice may not be removed or altered from any source
// distribution.
//
//========================================================================
//
// This test displays the state of every button and axis of every connected
// joystick and/or gamepad
//
//========================================================================
#include <glad/glad.h>
#include <GLFW/glfw3.h>
#define NK_IMPLEMENTATION
#define NK_INCLUDE_FIXED_TYPES
#define NK_INCLUDE_FONT_BAKING
#define NK_INCLUDE_DEFAULT_FONT
#define NK_INCLUDE_DEFAULT_ALLOCATOR
#define NK_INCLUDE_VERTEX_BUFFER_OUTPUT
#define NK_INCLUDE_STANDARD_VARARGS
#define NK_BUTTON_TRIGGER_ON_RELEASE
#include <nuklear.h>
#define NK_GLFW_GL2_IMPLEMENTATION
#include <nuklear_glfw_gl2.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#ifdef _MSC_VER
#define strdup(x) _strdup(x)
#endif
static int joysticks[GLFW_JOYSTICK_LAST + 1];
static int joystick_count = 0;
static void error_callback(int error, const char* description)
{
fprintf(stderr, "Error: %s\n", description);
}
static void joystick_callback(int jid, int event)
{
if (event == GLFW_CONNECTED)
joysticks[joystick_count++] = jid;
else if (event == GLFW_DISCONNECTED)
{
int i;
for (i = 0; i < joystick_count; i++)
{
if (joysticks[i] == jid)
break;
}
for (i = i + 1; i < joystick_count; i++)
joysticks[i - 1] = joysticks[i];
joystick_count--;
}
}
static const char* joystick_label(int jid)
{
static char label[1024];
snprintf(label, sizeof(label), "%i: %s", jid + 1, glfwGetJoystickName(jid));
return label;
}
int main(void)
{
int jid;
GLFWwindow* window;
struct nk_context* nk;
struct nk_font_atlas* atlas;
memset(joysticks, 0, sizeof(joysticks));
glfwSetErrorCallback(error_callback);
if (!glfwInit())
exit(EXIT_FAILURE);
for (jid = GLFW_JOYSTICK_1; jid <= GLFW_JOYSTICK_LAST; jid++)
{
if (glfwJoystickPresent(jid))
joystick_callback(jid, GLFW_CONNECTED);
}
glfwSetJoystickCallback(joystick_callback);
window = glfwCreateWindow(640, 480, "Joystick Test", NULL, NULL);
if (!window)
{
glfwTerminate();
exit(EXIT_FAILURE);
}
glfwMakeContextCurrent(window);
gladLoadGLLoader((GLADloadproc) glfwGetProcAddress);
glfwSwapInterval(1);
nk = nk_glfw3_init(window, NK_GLFW3_INSTALL_CALLBACKS);
nk_glfw3_font_stash_begin(&atlas);
nk_glfw3_font_stash_end();
while (!glfwWindowShouldClose(window))
{
int i, width, height;
glfwGetWindowSize(window, &width, &height);
glClear(GL_COLOR_BUFFER_BIT);
nk_glfw3_new_frame();
if (nk_begin(nk,
"Joysticks",
nk_rect(width - 200.f, 0.f, 200.f, (float) height),
NK_WINDOW_MINIMIZABLE |
NK_WINDOW_TITLE))
{
nk_layout_row_dynamic(nk, 30, 1);
if (joystick_count)
{
for (i = 0; i < joystick_count; i++)
{
if (nk_button_label(nk, joystick_label(joysticks[i])))
nk_window_set_focus(nk, joystick_label(joysticks[i]));
}
}
else
nk_label(nk, "No joysticks connected", NK_TEXT_LEFT);
}
nk_end(nk);
for (i = 0; i < joystick_count; i++)
{
if (nk_begin(nk,
joystick_label(joysticks[i]),
nk_rect(i * 20.f, i * 20.f, 400.f, 400.f),
NK_WINDOW_BORDER |
NK_WINDOW_MOVABLE |
NK_WINDOW_SCALABLE |
NK_WINDOW_MINIMIZABLE |
NK_WINDOW_TITLE))
{
int j, axis_count, button_count;
const float* axes;
const unsigned char* buttons;
nk_layout_row_dynamic(nk, 30, 1);
axes = glfwGetJoystickAxes(joysticks[i], &axis_count);
if (axis_count)
{
for (j = 0; j < axis_count; j++)
nk_slide_float(nk, -1.f, axes[j], 1.f, 0.1f);
}
nk_layout_row_dynamic(nk, 30, 8);
buttons = glfwGetJoystickButtons(joysticks[i], &button_count);
if (button_count)
{
for (j = 0; j < button_count; j++)
{
char name[16];
snprintf(name, sizeof(name), "%i", j + 1);
nk_select_label(nk, name, NK_TEXT_CENTERED, buttons[j]);
}
}
nk_layout_row_end(nk);
}
nk_end(nk);
}
nk_glfw3_render(NK_ANTI_ALIASING_ON, 10000, 1000);
glfwSwapBuffers(window);
glfwPollEvents();
}
glfwTerminate();
exit(EXIT_SUCCESS);
}