I don't know what your project will exactly look like, but let's assume you're going to restrict your character's spawning and movement to the area between x=100 and x=300 horizontally and y=100 and y=300 vertically. To restrict the spawning area, use this code in the spawning method (if it's in an Actor subclass, add getWorld(). between the this. and AddObject()): To restrict the character movement, use this code in the character's movement method: As I mentioned, his code will restrict your character to the area between x=100 and x=300 horizontally and y=100 and y=300 vertically. You can adjust the numbers however you want.

That would depend on the individual types of Actor and how the instances of each move.

I dont quite understand im new to this so I tryed to use the code but it dosnt work my world is scaled 800x600 and I kinda want the charackters movement to be at 50-500 x and 50-550 y. I dont fully understandt what you mean but i can move my charackter with wasd around the whole world and i want his movement to be scaled in the lenght I named. I hope anything I wrote made sense, sorry english is not my native language and I dont fully understand what you guys mean

First, collect key data to determine intended direction of movement along horizontal and vertical: Next, for 4-way movement, allow only one direction at a time and check range of movement:

Alright, then we'll need to change the code up slightly. Remove your current movement code, then put this bit of code into your character class: Call this method by writing into your act() method. Remove your current spawning code, and put this code into your world constructor: This will spawn one character at the very beginning of the game. If you don't like that, leave a reply and I'll change the code for you. Edit: I see that danpost has also replied. Both codes seem to work, so you can pick one.