This same thing will happen with small entities far more frequently because their entire collision box can fit inside the fence block. He can clearly step back and walk through the opening in the fence to my character, but he believes the fastest way is to walk through, because he is already 'inside' the fence and does not take collisions into account. The picture is a special case in which the sheep has his northwest corner inside a wall. Mobs, especially small ones, get stuck inside walls

He does not take into account where his feet will land, and the same can be said about his head.ģ. The creeper knows he can pathfind through the center of the hole, but reasons he is too tall to put his feet through the center and his head through the half slab. Some people like and utilize this, but it is a flaw. Mobs are incapable of passing through half slab gaps If he were to analyze collisions instead of just the grid he would know this.Ģ. This creeper believes he can travel both north and west because it is air, and he cannot travel either south or east because they are fences. This means the creeper pictured begins his pathfinding from inside the corner fence. For another, they do not take into account collisions properly. For one thing, entities begin pathfinding from their northwest corner instead of their center. Mobs (the creeper) get stuck in northwest corners Let me explain each of the four images inside the larger image I posted.ġ. Fixing this bug would make farming less frustrating and hiding from monsters much harder. Basically there are many ways in which an entity may conclude that it cannot move when in reality it can and vice versa. The consequences of this are far reaching. Entity movement accounts for this, but pathfinding does not. This would be okay except that collisions are not as strictly grid-based. The problem with the pathfinding in Minecraft is that is uses a strictly grid-based system. It seems sort of conceded to ask if they could be consolidated into this report, but I feel like this single one is more constructive than a bunch of little ones out there which are all symptoms of the same bug. However, I am reporting exactly what the problem is, how they are in reality the same issue, examples of other pathfinding issues which also occur, and how it could all be fixed with a single theoretical solution. I will say right now that both MC-12427 and MC-4661 are included in what I am about to report.

Mob grid minecraft on mac