Hey guys I started to code a side scrolling space shooter like Jets'n'Guns if you know the game =O.

And now I've got a problem.

Does anyone know how I manage it that the space ship isn't able to leave the current screen bounderies?

Here a picture to show what I mean.





hope you can help me ~

Roxas~

try something like this in the ship action ....
for example if camera.y and ship.y dosent work try other directions

if(ship.y < camera.y+300 && key_d ==1){ship.y+=5*time_step;}
if(ship.y > camera.y-300 && key_a ==1){ship.y-=5*time_step;}
if(ship.z < camera.z+500 && key_w ==1){ship.z+=5*time_step;}
if(ship.z > camera.z-500 && key_s ==1){ship.z-=5*time_step;}

this is just a simple example you can easyly shorten up the code for your needs.

If this is 2D... why not simply:

clamp(ship.x, 0, screen_size.x-ship_size.x);
clamp(ship.y, 0, screen_size.y-ship_size.y);

There are many solutions to solve this problem , i just wanted to show an easy to understand way

thanks for the quick answers ^^
well i figured something out. its a bit different to shinobi's solution but it helped me for my solution.

so I think it works now. thank you ;]

Roxas.

Shinobi: Yeah, that's true
Roxas: Good luck