File Size

[iamjot]

I just found out about patch maker (awesome tool!) - it works great. the thing is: my patch has the same size as my standalone exe game file (160mb). Is there any way to reduce the file size of the patch (i thought the patch only contains the CHANGES of the old and the new version).

thx

Jot

[Yves]

Hello,

There is a simple explanation for this.

I suppose you have built your EXE with MMF2. An EXE file created by MMF2 consist of chunks of compressed data. When you change a single byte in a chunk of data and compress it, the compressed version is totally different from the previous version, so Patch Maker cannot find any common pattern and stores the new data entirely.

Now I suppose all the chunks of data in your EXE haven't been modified, so in theory Patch Maker should be able to detect the other chunks that haven't been modified and not store them, but because of the current algorithm PM uses it can lose the synchronization between files and in this case it thinks everything is different, so it will just zip the new file.

That's the issue I was talking to you about in my e-mail yesterday, PM doesn't like big files that contain big chunks of data with many differences.

[iamjot]

Ah. Ok now I understood! Thx Yves! Also for the email. Actually "big files" like 100mb are not a big deal anymore these days

jot