1) Go to %appdata%\.minecraft\versions 2) Copy the 1.8 folder and rename it something new. I used '1.8 mapfix' 3) rename 1.8.jar to 1.8 mapfix.jar and 1.8.json to 1.8 mapfix.json 4) open 1.8 mapfix.json (with a text editor) and edit the id line to be 1.8 mapfix, save changes 5) edit the .class file (inside 1.8 mapfix.jar) with a hex editor as Altti described and save it. Don't forget to delete META-INF (I did, thanks Dolphin)
1-5) Now handled by Altti Tammi's installer script 6) start up minecraft with the launcher and edit your profile, you should see a new version available for selection called 1.8 mapfix, use that. 7) enjoy working maps
If anyone has any corrections or issues with my post let me know and I'll be happy to edit/remove it as needed. Thank you Altti for the solution and for the installer.
Edit: Corrected missing META-INF deletion (thanks Dolphin). Crossed out old method, I suggest using the installer for simplicity.
Michael Adam Gabzdyl
I'm far from an expert on this, but in Windows:
1) Go to %appdata%\.minecraft\versions2) Copy the 1.8 folder and rename it something new. I used '1.8 mapfix'3) rename 1.8.jar to 1.8 mapfix.jar and 1.8.json to 1.8 mapfix.json4) open 1.8 mapfix.json (with a text editor) and edit the id line to be 1.8 mapfix, save changes5) edit the .class file (inside 1.8 mapfix.jar) with a hex editor as Altti described and save it. Don't forget to delete META-INF (I did, thanks Dolphin)1-5) Now handled by Altti Tammi's installer script
6) start up minecraft with the launcher and edit your profile, you should see a new version available for selection
called 1.8 mapfix, use that.7) enjoy working maps
If anyone has any corrections or issues with my post let me know and I'll be happy to edit/remove it as needed. Thank you Altti for the solution and for the installer.
Edit: Corrected missing META-INF deletion (thanks Dolphin). Crossed out old method, I suggest using the installer for simplicity.