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Rewrote joystick test.

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This commit is contained in:
Camilla Berglund 2012-06-06 02:04:15 +02:00
parent 2213450840
commit 9cc0abffc5
2 changed files with 168 additions and 93 deletions
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1
readme.html
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@ -303,6 +303,7 @@ version of GLFW.</p>
<li>Replaced layout-dependent key codes with single, platform-independent set based on US layout</li>
<li>Replaced mouse wheel interface with two-dimensional, floating point scrolling interface</li>
<li>Replaced <code>glfwEnable</code> and <code>glfwDisable</code> with <code>glfwGetInputMode</code> and <code>glfwSetInputMode</code></li>
<li>Replaced <code>joystick</code> test with graphical version</li>
<li>Made Unicode character input unaffected by <code>GLFW_KEY_REPEAT</code></li>
<li>Removed event auto-polling and the <code>GLFW_AUTO_POLL_EVENTS</code> window enable</li>
<li>Removed the Win32 port .def files</li>

260
tests/joysticks.c
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@ -1,142 +1,216 @@
/*========================================================================
* This is a small test application for GLFW.
* joystick input test.
*========================================================================*/
//========================================================================
// Joystick input test
// Copyright (c) Camilla Berglund <elmindreda@elmindreda.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 <GL/glfw3.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <math.h>
#define MAX_AXES 10
#define MAX_BUTTONS 30
struct JoystickState
typedef struct Joystick
{
int present;
int num_axes;
int num_buttons;
float axes[MAX_AXES];
unsigned char buttons[MAX_BUTTONS];
};
GLboolean present;
float* axes;
unsigned char* buttons;
int axis_count;
int button_count;
} Joystick;
static struct JoystickState states[GLFW_JOYSTICK_LAST + 1];
static Joystick joysticks[GLFW_JOYSTICK_LAST - GLFW_JOYSTICK_1 + 1];
int running;
int keyrepeat = 0;
int systemkeys = 1;
static int joystick_count = 0;
/*========================================================================
* Retrieve joystick states
*========================================================================*/
static void updateJoysticksState(void)
static void window_size_callback(GLFWwindow window, int width, int height)
{
int joy;
glViewport(0, 0, width, height);
}
for (joy = GLFW_JOYSTICK_1; joy < GLFW_JOYSTICK_LAST + 1; joy++)
static void draw_joystick(Joystick* j, int x, int y, int width, int height)
{
int i;
int axis_width, axis_height;
int button_width, button_height;
axis_width = width / j->axis_count;
axis_height = 3 * height / 4;
button_width = width / j->button_count;
button_height = height / 4;
for (i = 0; i < j->axis_count; i++)
{
printf("Updating information for joystick %d\n", joy);
states[joy].present = glfwGetJoystickParam(joy, GLFW_PRESENT);
if (states[joy].present == GL_TRUE)
float value = j->axes[i] / 2.f + 0.5f;
glColor3f(0.3f, 0.3f, 0.3f);
glRecti(x + i * axis_width,
y,
x + (i + 1) * axis_width,
y + axis_height);
glColor3f(1.f, 1.f, 1.f);
glRecti(x + i * axis_width,
y + (int) (value * (axis_height - 5)),
x + (i + 1) * axis_width,
y + 5 + (int) (value * (axis_height - 5)));
}
for (i = 0; i < j->button_count; i++)
{
if (j->buttons[i])
glColor3f(1.f, 1.f, 1.f);
else
glColor3f(0.3f, 0.3f, 0.3f);
glRecti(x + i * button_width,
y + axis_height,
x + (i + 1) * button_width,
y + axis_height + button_height);
}
}
static void draw_joysticks(void)
{
int i, width, height;
glfwGetWindowSize(glfwGetCurrentContext(), &width, &height);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(0.f, width, height, 0.f, 1.f, -1.f);
glMatrixMode(GL_MODELVIEW);
for (i = 0; i < sizeof(joysticks) / sizeof(Joystick); i++)
{
Joystick* j = joysticks + i;
if (j->present)
{
states[joy].num_axes = glfwGetJoystickPos(joy, states[joy].axes, MAX_AXES);
states[joy].num_buttons = glfwGetJoystickButtons(joy, states[joy].buttons, MAX_BUTTONS);
draw_joystick(j,
0, i * height / joystick_count,
width, height / joystick_count);
}
}
}
/*========================================================================
* Print out the state of all joysticks on the standard output
*========================================================================*/
static void displayJoysticksState(void)
static void refresh_joysticks(void)
{
int joy;
int i;
for (joy = GLFW_JOYSTICK_1; joy < GLFW_JOYSTICK_LAST + 1; joy++)
for (i = 0; i < sizeof(joysticks) / sizeof(Joystick); i++)
{
printf("Joystick %d: %s\n", joy, (states[joy].present == GL_TRUE ? "present" : "not connected"));
Joystick* j = joysticks + i;
if (states[joy].present == GL_TRUE)
if (glfwGetJoystickParam(GLFW_JOYSTICK_1 + i, GLFW_PRESENT))
{
if (states[joy].num_axes > 0)
int axis_count, button_count;
axis_count = glfwGetJoystickParam(GLFW_JOYSTICK_1 + i, GLFW_AXES);
if (axis_count != j->axis_count)
{
printf(" axes: %.3f", states[joy].axes[0]);
for (i = 1; i < states[joy].num_axes; i++)
printf(", %.3f", states[joy].axes[i]);
printf("\n");
j->axis_count = axis_count;
j->axes = realloc(j->axes, j->axis_count * sizeof(float));
}
else
printf(" axes: none\n");
if (states[joy].num_buttons > 0)
glfwGetJoystickPos(GLFW_JOYSTICK_1 + i, j->axes, j->axis_count);
button_count = glfwGetJoystickParam(GLFW_JOYSTICK_1 + i, GLFW_BUTTONS);
if (button_count != j->button_count)
{
printf(" buttons: 00 => %c", ((states[joy].buttons[0] == GLFW_PRESS) ? 'P' : 'R'));
for (i = 1; i < states[joy].num_buttons; i++)
printf(", %02d => %c", i, ((states[joy].buttons[i] == GLFW_PRESS) ? 'P' : 'R'));
printf("\n");
j->button_count = button_count;
j->buttons = realloc(j->buttons, j->button_count);
}
glfwGetJoystickButtons(GLFW_JOYSTICK_1 + i, j->buttons, j->button_count);
if (!j->present)
{
printf("Found joystick %i with %i axes, %i buttons\n",
i + 1, j->axis_count, j->button_count);
joystick_count++;
}
j->present = GL_TRUE;
}
else
{
if (j->present)
{
free(j->axes);
free(j->buttons);
memset(j, 0, sizeof(Joystick));
printf("Lost joystick %i\n", i + 1);
joystick_count--;
}
else
printf(" buttons: none\n");
}
}
}
int main(void)
{
double start;
double t;
double update;
GLFWwindow window;
memset(joysticks, 0, sizeof(joysticks));
/* Initialise GLFW */
if (!glfwInit())
{
fprintf(stderr, "Failed to initialize GLFW: %s\n", glfwErrorString(glfwGetError()));
exit(EXIT_FAILURE);
}
printf("The program will work for 20 seconds and display every seconds the state of the joysticks\n");
printf("Your computer is going to be very slow as the program is doing an active loop .....\n");
start = glfwGetTime();
update = start;
/* print the initial state of all joysticks */
updateJoysticksState();
printf("\n");
displayJoysticksState();
running = GL_TRUE;
/* Main loop */
while (running)
window = glfwOpenWindow(0, 0, GLFW_WINDOWED, "Joystick Test", NULL);
if (!window)
{
/* Get time */
t = glfwGetTime();
glfwTerminate();
/* Display the state of all connected joysticks every secons */
if ((t - update) > 1.0)
{
update = t;
printf("\n");
updateJoysticksState();
printf("\n");
displayJoysticksState();
}
/* Check if the window was closed */
if ((t - start) > 20.0)
running = GL_FALSE;
fprintf(stderr, "Failed to open GLFW window: %s\n", glfwErrorString(glfwGetError()));
exit(EXIT_FAILURE);
}
/* Close OpenGL window and terminate GLFW */
glfwTerminate();
glfwSetWindowSizeCallback(window_size_callback);
glfwSwapInterval(1);
return 0;
while (glfwIsWindow(window))
{
glClear(GL_COLOR_BUFFER_BIT);
refresh_joysticks();
draw_joysticks();
glfwSwapBuffers();
glfwPollEvents();
}
glfwTerminate();
exit(EXIT_SUCCESS);
}