Pathfinding for trading route not working as expected

ReachSouth · August 18, 2021, 3:21pm

GAME INFORMATION

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GAME BUILD #: 101.101.51737.0 7126076
GAME PLATFORM: Steam
OPERATING SYSTEM: Windows 10

ISSUE EXPERIENCED

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The 4th mission of the european campaign Sforza (Blood and Betrayal) has three main islands. One of them is connected to both others by bridges that are barricaded at the beginning of the scenario. However, even if the barricades are destroyed no trade routes between the islands can be established. It only works for trade routes on the same island.

At first I assumed the fact that the bridges were barricaded at the beginning of the mission is causing this problem. But this does not seem to be the case, since now I’ve encountered the same problem where a bridge was passable from the beginning as I’ve described in this reply: Pathfinding for trading route not working as expected - #2 by ReachSouth

In the map editor I cannot reproduce the bug. There trade routes between islands that are connected with a bridge do work.

FREQUENCY OF ISSUE

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100% of the time / matches I play (ALWAYS)

REPRODUCTION STEPS

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Here’s the steps to reproduce the issue:

Start 4th mission of the european campaign Sforza (Blood and Betrayal)
Destroy barricades on the bridges
Build market on your starting island and send trade carts to the market of any other player
Notice how the trade carts move to the target market and idle when they arrive
Build market on the island of target market
Trading with this market works
Start 5th mission of the european campaign Sforza
Wait until green builds a market
Build market on your starting island and send trade carts to the market of the green player
Notice how the trade carts move to the target market and idle when they arrive
Build market on the island of the green player
Trading with this market works

EXPECTED RESULT

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Pathfinding for the trade carts should find the most distant market even if bridges are involved.

IMAGE

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A: is my market on my starting island
B: is my market on the 2nd island
C: is my market on the 3rd island
X: is the other players market
Trading is only possible between B and X
mini_map_highlight_markets

At this state both bridges can be crossed by land units:

But the AI chooses to do the trade only between markets B and X providing only 4 gold in this case:

For the sake of completness: At the beginning of the scenario the bridges are completly barricaded:

GAME FILES (SAVE / RECORDING)

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TRADECARTS_DO_NOT_CROSS_BRIDGES.aoe2spgame (719.3 KB)

ReachSouth · August 18, 2021, 5:26pm

Hmm, I guess my assumption about the barricaded bridges is wrong. In the 5th misson of Sforza I have the same problem. But here the bridges are passable from the beginning.

A and B are my markets. X is the market of green. The AI decides to use the trading route X-A instead of X-B: