Discovered a particle bug.

[highrise]

Hi there

I couldn't figure out why I couldn't get particle effects like lasers and explosions to work, and then I discovered this bug. If you set the screen size to include the last column on the right, the particle effects won't work. 

I made a small recording to test and demonstrate. In it, I started from scratch and put a simple explosion in the player event. When it runs, you can see the effect. Then I went and changed the screen size to include the last column on the right, and it didn't work. When I moved the screen back, it worked again.

The recording is attached as RZX.

thanks

Attachments:

bugrecord.rzx (33.83 KB)

[alessandro]

Unfortunately, I confirm the existence of this bug.

[cperezgrin]

Thanks for this info. I thought my memory got corrupted

[psyberion]

This has since been reported again by Lamptonworm on thread "MPAGD bug - explode particle infinite wrap" last year with regards to versions 0.7.6 and 0.7.7.

I'm finding this issue on 0.7.10 at the moment.

[Jonathan Cauldwell]

Unfortunately my laptop died a few days ago and I've had to replace it with a new one. As I'm still installing software I am not able to build MPAGD at present, I'm even having a problem getting back onto Facebook.

Until I'm back up and running could you try replacing Enginezx.asm with the attached engine and let me know if it solves the infinite wrap problem? I've added 3 lines so there's a risk that the assembler might throw out one of the relative jumps a few lines above.

EngineZX.asm (157.54 KB)