Map editing for AI path-finding problems.

**nikolai1962** · 04-05-2007, 01:57

Example of a diagonal path stall.

Sometimes you'll see egypt stall attacking Damascus with an army in Acre that isn't moving. This will usually happen if they've attacked from jerusalem and lost *and* they have a stack in acre that isn't doing anything. They'll set the stack in Acre to attack Damascus and that stack witll stall.

If you look at the screenie you'll see that the border point where jeruslaem, damascus and acre all meet is just before the mountains. This means the Acre stack tries to path through where i've drawn the blue line. However, i think the pathing works orthogonally and only figures out diagonal movement after it creates an orthogonal path. This would mean the pathing at that junction would go one tile right into jeruslaem region then one tile up to the corner tile of damascus region.

This hits the region A to region B through region C thing and the stack stalls until they revolt or damascus gets taken by some other stack.

This can be fixed by moving the mutual border point under the mountains.

**alpaca** · 04-05-2007, 11:58

By the way Nikolai, you might want to check out my stripped-down map to test this more systematically.
You can create all kinds of setups there quite easily, and you can decrease the map size by a fair margin to generate the rwm faster (it's already faster than vanilla anyways I think)

**nikolai1962** · 04-06-2007, 06:15

By the way Nikolai, you might want to check out my stripped-down map to test this more systematically.
You can create all kinds of setups there quite easily

Yeah, i d/l ed it precisely for that reason. Trouble is i'm a bit obsessed with semi-fixing the vanilla map so i can actually play the game without getting frustrated seeing all the AI armies standing around not doing anything. I'm planning on just getting the vanilla map semi-working then using your thing to make a new test map to figure out the rest.

**SigniferOne** · 04-09-2007, 18:05

Excellent post Nikolai, will be very interesting to put it to use. Have you consulted a very similar study of pathing in RTW? They started along very much the same lines as you did, and I think they got further along in RTW. Considering that both games have almost exactly the same maps, the results should be comparable between the two studies.

**Lusted** · 04-09-2007, 18:08

Nikolai did the ai pathfinding thing for RTW i believe.

**nikolai1962** · 04-10-2007, 07:48

Have you consulted a very similar study of pathing in RTW?

Yeah, Lusted is correct. I started looking at this for RTW but got sick of trying to guess what makes it work, or rather not work. Had to try again for MTW2 as it had the same problems of AI armies standing around lost all over the place. The guidelines above solve at best maybe 20% of the problems though so i'm still missing big pieces of the puzzle.

**SigniferOne** · 04-10-2007, 14:57

Are you using the autoplay switch, to play through the first X turns automatically? I was pretty positive it's been transfered over from RTW, but so far haven't seen people mention it.