MultiplayerGGJ : Photon and Unreal

I was excited for this game jam.

Video:

So I started working on it , using Unreal Engine 5.0.3 , I have to say that the engine is still very buggy and at the moment of the jam beginning 5.1 was in Preview and not very reliable, I was hoping to use it as it fixes many things.

Technical details of the development

The idea was to make a high quality photogrammetry project, so I started playing with Lumen, Nanite and testing big assets, in the end I had to opt for using SSGI. I had to convert the normal big levels to World Partition to take advantage of the HLODs and the streaming. You can see the quality of SSGI here:

• crash: using a property from Slate from a thread that is not the game one (and another variant)
• crash: trying to change an array property base type
• a crash with Direct3D 12 - RHI , I am using an AMD GPU ; I had to disable the default RHI 
• tried Vulkan but many GPU particles didn't work as expected
• crashes from the conversion of Levels to World Partition
• current bug: the Navmesh is not correctly exported in builds, so there is no AI in the build (Major issue)

this slowed down the development a bit, but I had a clear schedule once I came to a good design.

Thanks to my friend Javier María who helped me with the design.

Some bugs I left for the last day :

•  Left Shift - missing walk speeds values set (I left values 0 instead of 500 and 700)
•  Bug of replication: wrong string keys used to replicate the Building item by other players on replication (category+subcategory strings)
•  Not cooking all assets in the game : missing functionalities and issues related

https://www.dropbox.com/scl/fo/1znp7pqd851exehjinhv0/h?dl=0&rlkey=eajevsyivi2ziu...