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Once you've tagged the navigation grid (Navmesh) Geometry and layers, you can bake navigation mesh geometry.
in the Navigation (Navigation) window (window), navigate (Navigation), Go to the Bake (Bake) tab (upper-right corner) and click the Bake button (lower-right corner).
Navigating the baking window
Here are the properties that will affect the navigation grid (Navmesh) Baking:
|
|
| Radius (RADIUS) |
The radius of the "typical" proxy (preferably the minimum value). |
| Altitude (height) |
The height of the "typical" agent (the role passes the desired "gap"). |
| Max Slope (Max Slope) |
All surfaces with a slope greater than this value are discarded. |
| Step Height (Step) |
When the height difference is lower than the step height, it is considered to be connected to the navigation grid area. |
| Drop Heights (drop height) |
If the property value is positive, the split grid link is placed for the adjacent navigation mesh surface with a height difference less than that value. |
| Jumping distance (jump distance) |
If the property value is positive, a detached grid link is placed for the surface of the adjacent navigation grid that has a horizontal distance less than the value. |
| Senior (Advanced) |
| Minimum area (min regions area) |
Areas smaller than this threshold will be discarded. |
| Width error (inaccuracy)% |
Allowable width error |
| Height error (height inaccuracy)% |
Allowable height Error |
| Height Mesh |
If this option is checked, the original height information is stored. This can have a certain effect on speed and memory performance. |
Note that the baked navigation grid is part of the scene and the delegate can navigate through the grid. To delete the navigation grid, click Clear in the Bake (Bake) tab.
Implementation Details
when you bake a navigation grid (Navmesh), it maps to squares in the XZ plane. When you visualize a square, its border is treated as a bright blue axis snapline on the navigation grid (Navmesh). Unity supports up to 1024 squares in a scene, each of which is represented by a 1000x100 individual. If you plan to have the agent navigate large areas, notice the size of the navigation grid (Navmesh) and the final number of meshes.
navigation grid with bright blue axis snaplines displays grid scale
The default setting for radius (RADIUS) is 0.5, and the default setting for width error (inaccuracy) is 0.16666667 (16.666667%). The default setting of the square edge length can be calculated as:
1000 * (Depth of RADIUS) * Width error = 1000 * (2*0.5) * 0.16666667 = 166.66667.
increasing the width inaccuracy will allow larger areas to be accommodated, but will reduce the accuracy of the navigation grid (Navmesh).
For example, if your grid has a total of 32 squares, you will have 1024 squares. This means that if you have a really huge terrain that you want to use with the navigation grid (Navmesh), the terrain area must not exceed 5.333 times 5.333 km (32 * 166.66667 meters) by default.
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Unity3d game Development (Navmesh) and pathfinding (pathfinding) baking
