Base information

• Minecraft version: 1.12.2
• Mod version: 2.3.25.351-universal
• Minecraft Forge version: 14.23.5.2847
• Mod Pack: Project Ozone 3 3.2.55

Issue

I tried to create a 11 x 145 (size of the frame) horizontal portal, but it didn't open. The largest size i was able to open was 11 x 101 (size of the frame). I have not checked wider portals.
According to the information tablet the maximum size should be 150 x 150.

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Have you made sure that the entire portal is loaded? I would highly recommend chunk-loading the entire portal if you're going to make one that big.

Yes, i placed a spot loader from ChickenChunks in every chunk (10 chunks). Also i'm in single player with a render distance of 16 and can see the whole area. So it should definitely be loaded.

I took a quick look at the code and found this line. Looks like just 100 blocks (Euclidean distance) from the Dislocator Receptacle are scanned for the portal ignition.

I had the Dislocator Receptacle placed in the center of the shorter side. Placing it in the center of the long side works in my case. But if i understand this code correctly, 150 x 150 portals are not possible. The maximum size depends on the actual shape of the portal frame.

If i found the right spot, it would be really hard to explain to players how big the portal can be. I think the size check should to be changed.

Yea that documentation does need to be updated. Technically the largest you can make is a 198x198 circle with the receptacle in the center but even that isn't actually possible possible unless you increase your jvm stack size.

Oh yea. The receptacle does not actually need to ba a part of the frame. It can be anywhere inside the frame's area..