Cheat Engine

Bizarro

i was wondering if its possible to
detect a small image when it appares on the screen
using c++.

lets say i have copied a dog image(30x30 pixel). i want to detect that same image when it reappears on the screen and make a beep.

any idea?

samuri25404 · Posted: Mon Jun 16, 2008 4:15 pm Post subject:

Unless there's some API that I don't know about, you'd probably have to loop through the screen and compare the pixels you got from there to your image.

It'd probably be a pretty slow process.

Chaosis13 · Posted: Mon Jun 16, 2008 4:20 pm Post subject:

Using Auto Hotkeys might be easier, unless it if for your trainer....

Then I would make an array and add the bytes of each pixle into it. Then I would take an array the same way of the screen, then compare them for a similar section. Then have it retreave the upper most sections position.

Or you could search for 3 or 4 distinctive pixles to improve the speed...
_____________________________________________________________

I have no experience with this, just saying how I would go about doing it...

kitterz

Bizarro · Posted: Mon Jun 16, 2008 4:30 pm Post subject:

same here i havent done this before.
the only method i can think of is using pixel detection

get 3-4 pixel points of that image with pre-defined x/y difference. then scan the whole screen every 2-3 sec.
but in my opinion, thats not a very efficient way of coding....

hcavolsdsadgadsg · Posted: Mon Jun 16, 2008 5:40 pm Post subject:

Set/GetPixel are SLOW.

Look into using bitmaps, it will be MUCH faster.

kitterz · Posted: Mon Jun 16, 2008 6:50 pm Post subject:

HalfPrime · Posted: Mon Jun 16, 2008 7:19 pm Post subject:

Start at the corner of the screen and start looking for the first pixel of the image you're searching for. If they match, check the next pixel on the screen for the next pixel in the image and so on. If they don't match, check the next pixel for the first pixel of the image.

samuri25404 · Posted: Mon Jun 16, 2008 7:37 pm Post subject:

I'd say look into actually hacking the game.

Find the collection of mob structures, and what not.

You'll probably earn a decent amount of respect if you don't get spoonfed that. :wink:

Bizarro · Posted: Mon Jun 16, 2008 8:44 pm Post subject:

why would i detect mob using pixel... thats just simply stupid...
considerinng how many monsters in a map.

im detecting something uncommon but yet important

samuri25404 · Posted: Mon Jun 16, 2008 10:16 pm Post subject:

--Pillboi-- · Posted: Tue Jun 17, 2008 11:03 am Post subject:

Bizarro · Posted: Wed Jun 18, 2008 10:45 am Post subject:

--Pillboi-- · Posted: Wed Jun 18, 2008 11:43 am Post subject:

Well, there you go then. You could let the user set the accuracy, which would be how many pixels to go right each loop, using a slider.

Cx · Posted: Wed Jun 18, 2008 10:44 pm Post subject: