Xna碰撞墙2D
[英]Xna Collision with wall 2D
问题描述
Okay so I have been checking on the internet for an answer to my (some may say simple) collision detection problem. 
好吧，所以我一直在互联网上检查我的碰撞检测问题的答案（有人可能说很简单）。 I have a car and I essentially want it not to drive through a wall or get stuck in it. 我有一辆汽车，我本质上希望它不要穿过墙壁或卡在其中。 I have tried to split the wall into four rectangles representing the four edges however it causes the car to move around in a very buggy manner. 我试图将墙壁分成代表四个边缘的四个矩形，但是这会使汽车以非常有故障的方式移动。
Could someone tell me where i could find information or show me how to resolve the collision of a rectangular car with a wall as shown in the diagram? 有人可以告诉我在哪里可以找到信息，或者告诉我如何解决如图所示的矩形汽车与墙的碰撞？ I want the car to carry on moving in a direction that does not cause it to go through the wall but like you normally would around it or away. 我希望汽车继续前进，其方向不会使它穿过墙壁，而是像您通常会绕过墙壁或离开墙壁一样。
2 个解决方案
解决方案1
3 2012-09-23 21:24:27
Look into the separating axis theorem . 查看分离轴定理 。
You should really read this tutorial from the developers of N+. 您应该真正从N +开发人员那里阅读本教程 。 It has several interactive demonstrations so you can see the concepts that they describe. 它具有多个交互式演示，因此您可以看到它们描述的概念。
解决方案2
1 2012-09-23 21:15:15
The car is able to hit the sides of the wall when: 在以下情况下，汽车能够撞到墙壁的侧面：
CarYT > WallYB && CarYB < WallYT
If that's true it hits the left side when: 如果是这样，则在以下情况下会触及左侧：
CarXL < WallXL && CarXR >= WallXL
The other cases are similar. 其他情况相似。
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