LWJGL Forum

Programming => OpenGL => Topic started by: loginmen on March 04, 2020, 12:30:56

Title: multiple button operations instead of one
Post by: loginmen on March 04, 2020, 12:30:56
I wrote a simple opengl program for input test
Code: [Select]
import org.lwjgl.opengl.*;
import static org.lwjgl.glfw.GLFW.*;
import static org.lwjgl.opengl.GL46.*;
import static org.lwjgl.system.MemoryUtil.*;

public class TestInput {
private static long window;
private static KeyCallBack input = new KeyCallBack();
private static float color = 0.0f;

public static void main(String[] args) {
glfwInit();
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 4);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 6);
glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
glfwWindowHint(GLFW_RESIZABLE, GL_FALSE);
window = glfwCreateWindow(800, 600, "LearnOpenGL", NULL, NULL);
if (window == NULL)
{
glfwTerminate();
}
glfwSwapInterval(1);
glfwSetKeyCallback(window, input);
glfwMakeContextCurrent(window);
GL.createCapabilities();
while(!glfwWindowShouldClose(window))
{
if (input.isKeyPressed(GLFW_KEY_W)) {
if (color < 1) color += 0.01f;
System.out.println(color);
}
glfwPollEvents();
glClearColor(color, color, color, 1.0f);
    glClear(GL_COLOR_BUFFER_BIT);
    glfwSwapBuffers(window);
}
glfwTerminate();
}
}
Code: [Select]
import org.lwjgl.glfw.GLFWKeyCallbackI;
import static org.lwjgl.glfw.GLFW.*;

public class KeyCallBack implements GLFWKeyCallbackI {
private int key;
private int action;

@Override
public void invoke(long window, int key, int scancode, int action, int mods) {
this.key = key;
this.action = action;
}

public boolean isKeyPressed(int keyCode) {
return (key == keyCode) && (action == GLFW_PRESS);
}
}
I need the buttons to work only once, but the button fires about 4 times if just press and about 30 times if pressed. How fix it? Each output of the number for me is a button fires. I use latest stable build of lwjgl. Using flags is not a good option as there are many buttons