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Diffstat (limited to 'glfw-3.2.1/tests/joysticks.c')
| -rw-r--r-- | glfw-3.2.1/tests/joysticks.c | 216 |
1 files changed, 216 insertions, 0 deletions
diff --git a/glfw-3.2.1/tests/joysticks.c b/glfw-3.2.1/tests/joysticks.c new file mode 100644 index 0000000..fa9800e --- /dev/null +++ b/glfw-3.2.1/tests/joysticks.c @@ -0,0 +1,216 @@ +//======================================================================== +// Joystick input test +// Copyright (c) Camilla Berglund <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> + +#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 framebuffer_size_callback(GLFWwindow* window, int width, int height) +{ + glViewport(0, 0, width, height); +} + +static void draw_joystick(int index, int x, int y, int width, int height) +{ + int i; + int axis_count, button_count; + const float* axes; + const unsigned char* buttons; + const int axis_height = 3 * height / 4; + const int button_height = height / 4; + + axes = glfwGetJoystickAxes(joysticks[index], &axis_count); + if (axis_count) + { + const int axis_width = width / axis_count; + + for (i = 0; i < axis_count; i++) + { + float value = 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))); + } + } + + buttons = glfwGetJoystickButtons(joysticks[index], &button_count); + if (button_count) + { + const int button_width = width / button_count; + + for (i = 0; i < button_count; i++) + { + if (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(GLFWwindow* window) +{ + int i, width, height, offset = 0; + + glfwGetFramebufferSize(window, &width, &height); + + glMatrixMode(GL_PROJECTION); + glLoadIdentity(); + glOrtho(0.f, width, height, 0.f, 1.f, -1.f); + glMatrixMode(GL_MODELVIEW); + + for (i = 0; i < joystick_count; i++) + { + draw_joystick(i, + 0, offset * height / joystick_count, + width, height / joystick_count); + offset++; + } +} + +static void joystick_callback(int joy, int event) +{ + if (event == GLFW_CONNECTED) + { + int axis_count, button_count; + + glfwGetJoystickAxes(joy, &axis_count); + glfwGetJoystickButtons(joy, &button_count); + + printf("Found joystick %i named \'%s\' with %i axes, %i buttons\n", + joy + 1, + glfwGetJoystickName(joy), + axis_count, + button_count); + + joysticks[joystick_count++] = joy; + } + else if (event == GLFW_DISCONNECTED) + { + int i; + + for (i = 0; i < joystick_count; i++) + { + if (joysticks[i] == joy) + break; + } + + for (i = i + 1; i < joystick_count; i++) + joysticks[i - 1] = joysticks[i]; + + printf("Lost joystick %i\n", joy + 1); + joystick_count--; + } +} + +static void find_joysticks(void) +{ + int joy; + + for (joy = GLFW_JOYSTICK_1; joy <= GLFW_JOYSTICK_LAST; joy++) + { + if (glfwJoystickPresent(joy)) + joystick_callback(joy, GLFW_CONNECTED); + } +} + +int main(void) +{ + GLFWwindow* window; + + memset(joysticks, 0, sizeof(joysticks)); + + glfwSetErrorCallback(error_callback); + + if (!glfwInit()) + exit(EXIT_FAILURE); + + find_joysticks(); + glfwSetJoystickCallback(joystick_callback); + + window = glfwCreateWindow(640, 480, "Joystick Test", NULL, NULL); + if (!window) + { + glfwTerminate(); + exit(EXIT_FAILURE); + } + + glfwSetFramebufferSizeCallback(window, framebuffer_size_callback); + + glfwMakeContextCurrent(window); + gladLoadGLLoader((GLADloadproc) glfwGetProcAddress); + glfwSwapInterval(1); + + while (!glfwWindowShouldClose(window)) + { + glClear(GL_COLOR_BUFFER_BIT); + + draw_joysticks(window); + + glfwSwapBuffers(window); + glfwPollEvents(); + + // Workaround for an issue with msvcrt and mintty + fflush(stdout); + } + + glfwTerminate(); + exit(EXIT_SUCCESS); +} + |