opengl 在屏幕上打印文本变量 - 菜单

发布于 2025-01-06 01:28:14 字数 732 浏览 2 评论 0原文

我正在制作一款赛车游戏，我想在场景屏幕上打印一些信息，例如速度、圈数、按键绑定等。我希望它们在屏幕上平坦，有一个位置可以说是固定在相机前面（就像真实游戏中的速度计）而不是在我的场景内 - 如果这是不可能的，那么我会将它们打印在我的场景内。

你知道我可以使用哪些函数吗（glutBitmapCharacter？）我尝试了 printw 但我的程序无法编译。你有什么建议？

将会从各种例程打印多条消息，

我已经尝试过这个（屏幕上没有显示任何内容）

glPushMatrix();
                 glRasterPos2f(100, 100);
                 glColor3f(0.0,0.5,0.1);
                sprintf(message,"\nLap(User):%d",lapsB);
                len = (int) strlen(message);
                for (int i = 0; i < len; i++) {
                    glutBitmapCharacter(GLUT_BITMAP_HELVETICA_18, message[i]);
                }
                glPopMatrix();

还有一件事是如何创建菜单 - 有没有我可以使用的方法，用户必须在 3 个条目之间进行选择，通过按输入仅键盘上的 1 或 2 或 3

原文

I am making a racing game and I would like to print some information such as speed, lap, key bindings etc. on the screen of my scene. I want them to be flat on the screen, having a position lets say fixed in front of the camera (like speedometers in real games) not inside my scene - if that's not possible then I ll print them inside my scene.

Do you know what functions can I use (glutBitmapCharacter?)I tried printw but my program doesn't compile. What do you propose?

There will be multiple messages printed from various routines

I have already tried this (nothing displays on screen)

glPushMatrix();
                 glRasterPos2f(100, 100);
                 glColor3f(0.0,0.5,0.1);
                sprintf(message,"\nLap(User):%d",lapsB);
                len = (int) strlen(message);
                for (int i = 0; i < len; i++) {
                    glutBitmapCharacter(GLUT_BITMAP_HELVETICA_18, message[i]);
                }
                glPopMatrix();

One more thing how can I create a menu - is there any method I can use, user will have to chose between 3 entries, input by pressing 1 or 2 or 3 on keyboard only

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