How to improve the nave mesh?


I’m trying to build a navmesh with the recast graph, but the result does’nt allow the agent to navigate on all the level. I’ve been tweaking the values of the recast, and that’s the best result i get. On the graveyard, it’s quite ok , even if the navmesh is far from the wall. But on the dungeon side, there s quite no navmesh, at least not enough to navigate. I thought it was because the dungeon has doors, so took the doors away, but scanning again did’nt change so much. How could i improve the navmesh ? Thanks !

Edit : problem solved. I had to reduce the cell size to 0.1, the character radius to 0.6. And now it’s fine !

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