microAI is broken on non-flat terrain

[aco4]

Differences in terrain elevation can cause units to stop shooting. In the video below, the orange tanks are set to Fire-at-will, but refuse to shoot the cyborg because they are targeting the black tank behind the hill.

Untitled.video.-.Made.with.Clipchamp.mp4

(For this test, the orange tanks were set to Hold Position, but this does not change the behavior.)

Test Map

2c-test89.zip

Expected Behavior

Direct fire units should prioritize enemies that are within direct line of sight. In this case, the tanks should shoot the cyborg and truck.

System

• OS: Windows 11
• Game version: 4.5.5

Additional Context

This is a reason to prefer NTW flat maps in multiplayer