Complicated Question???

If i had an object with a bullet action on it how could i tell it to not go through a wall without collision? In a pacman example the ghost never collided with the walls, instead a script allows them to pick on available directions. For my game i want my object to go in a specific path without AI. I only want my object to change directions when it reaches a wall.

You could just tell it to rotate on collision with an invisible object, so it never actually touches a wall, you could set angles of 0,90,180,270 and get it to either pick one at random, but this could create a bounce action, or get it to check for invisible object is within say 2 pixles then rotate.

you can save the X and Y position of your object each tick in two private variables, and then

if there's overlapping

• > fall back the the previous position
• > then randomly pick any of the 3 cardinal directions your object wasn't moving toward (loop three or four times)

   -> check each time if you won't run into a wall again (overlap at offset)

   -> and then apply and break the loop

Thanks yann here is the capx.

dl.dropbox.com/u/11360597/DirectXMainFile.capx

i called it directx because you direct the critters around the map.

You press space to start them going. Maybe this will better help explain my dilemma. If i can get this to work i will be extremely happy. If i can't get it to work i will scrap the project altogether.

going all through the walls like crazy, its so annoying.

easier with a grid movement type of algo botAI.capx

you can even set the speed super high like 10,000 px per second, you won't lose any bot

holy crap, thanks dude. The only thing is i don't want the bot to have a choice to go in any direction i want them to be stuck in a loop on purpose. I want the player to place an arrow to get the bot to exit the loop. They are 2 smart hehe. I want them to be dumber if that makes any since XD.

Here is a youtube link of what im trying to go for.

youtube.com/watch

if you understand the code, it's just one line to change

is it in the check for walls part? I need a hint lol.

i changed the set dir to chosen (-1,-1) and there sort of looping, but some of them want to escape the loop by going in a forbidden direction.

never mind it works. Thank you yann master :D

The project will continue because of you thank you man. Did you get a computer science degree? because you are smart.

I went to artschool actually...

then how do you know so much?

I know nothing it's just logic. Your problem was caused by some imprecision, by using a grid movement system you're 100% accurate, then it's just a matter of changing direction.

Ok I lied, I know unit circles and affine functions. But well... almost everybody learn that in highschool.

i need to learn that math. Your like my role model lol. teach me your ways hehehe.

I have another question. If the player wanted to change the bots direction how could that work. Like once the bot walks on a down arrow i want it to go down. I know how to grid snap drag but how do i change the bots direction on the fly.