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Libgdx实现射击（子弹和物体之间的碰撞）

[英]Libgdx implementing shooting (collision between bullet and objects)

原文 2014-02-11 09:25:52 5 1 java/ 3d/ libgdx/ collision-detection

I am new to 3D programming, just started yesterday. 我是3D编程的新手，昨天才开始。
I am just trying to create a simple game, where i move in 3D space, but collision detection works in 2D top down space, cause my character can't jump. 我只是尝试创建一个简单的游戏，在3D空间中移动，但是碰撞检测在2D自上而下的空间中起作用，导致角色无法跳跃。 So collision happens only on X and Z axis. 因此，碰撞仅发生在X和Z轴上。
But now i think about implementing shooting, where the bullet flies in the direction my camera is pointing (first person camera). 但是现在我考虑实施射击，子弹朝着我的相机指向的方向（第一人称相机）飞行。 But i have no idea how shooting is normaly implemented in 3D games? 但是我不知道在3D游戏中通常如何进行拍摄？ Is a Bullet an object, which is drawn, like in many 2D games, and moved at high speed? Bullet是像许多2D游戏中一样绘制并高速移动的对象吗？ Or is it just a line, which isn't even shown sometimes? 还是只是一条线，有时甚至没有显示？ And how can i check for collision with that line without iterating throught all walls and mobs? 我如何在不遍历所有墙壁和生物的情况下检查与那条线的碰撞？ I know you can find the areas throught which the bullet flies, but isn't this a big calculation when the line can go in every direction in 3D space? 我知道您可以找到子弹飞过的区域，但是当线可以在3D空间中的各个方向上走时，这不是一个很大的计算吗？

1 个解决方案

Depends if you want to show the bullet, then you can make a bullet model and make it move very fast. 取决于是否要显示项目符号，则可以创建项目符号模型并使它移动得非常快。

These are good options each one better than the previous 这些都是不错的选择，每一个都比以前更好

You can check for collisions iterating all the objects. 您可以检查所有对象的冲突。
You can have all the objects in nodes that have a reference to their neighbors and check collisions on them 您可以将所有对象包含在引用其邻居的节点中，并检查它们之间的冲突
Same as previous, but you take into account the direction vector of the bullet and only check the neighbors that are in front of it. 与之前的相同，但是您考虑了子弹的方向向量，只检查了子弹的前面的邻居。