<![CDATA[Restricting unit builds]]>In a mod I am working on units can be built at either a factory(anything) or recruitmentCenter (infantry only).

The code is

<attachment name="unitAttachment" attachTo="factory" javaClass="games.strategy.triplea.attachments.UnitAttachment" type="unitType">
<option name="isFactory" value="true"/>
</attachment>

<attachment name="unitAttachment" attachTo="recruitmentCenter" javaClass="games.strategy.triplea.attachments.UnitAttachment" type="unitType">
 <option name="isFactory" value="true" />
 <option name="canBeDamaged" value="false" />
</attachment>

<attachment name="unitAttachment" attachTo="infantry" javaClass="games.strategy.triplea.attachments.UnitAttachment" type="unitType">
<option name="movement" value="1"/>
<option name="transportCost" value="1"/>
<option name="attack" value="1"/>
<option name="defense" value="2"/>
<option name="isLandTransportable" value="true"/>
<option name="artillerySupportable" value="true"/>
<option name="requiresUnits" value="recruitmentCenter" />
<option name="requiresUnits" value="factory" />
</attachment>

<attachment name="unitAttachment" attachTo="armor" javaClass="games.strategy.triplea.attachments.UnitAttachment" type="unitType">
<option name="movement" value="2"/>
<option name="transportCost" value="2"/>
<option name="canBlitz" value="true"/>
<option name="attack" value="3"/>
<option name="defense" value="2"/>
<option name="requiresUnits" value="factory" />
</attachment>

However armor can be placed at a recruitmentCenter. I have done this before in another mod without a problem (WW2-Zombies). I have attached the full xml file. East_and_West-Manual.xml

Does anyone have any idea what the problem is? Is there another way of creating infantry-only production?

]]>https://forums.triplea-game.org/topic/4298/restricting-unit-buildsRSS for NodeWed, 08 Apr 2026 12:45:35 GMTTue, 07 Apr 2026 21:41:48 GMT60<![CDATA[Reply to Restricting unit builds on Wed, 08 Apr 2026 05:02:18 GMT]]>@RogerCooper

Did a quick scan did not see;

<property name="Unit Placement Restrictions" value="true" editable="false">
      <boolean/>
    </property>

Which I think requiresUnit to work.

Cheers

]]>https://forums.triplea-game.org/post/76590https://forums.triplea-game.org/post/76590Wed, 08 Apr 2026 05:02:18 GMT<![CDATA[Reply to Restricting unit builds on Tue, 07 Apr 2026 22:01:30 GMT]]>hmm maybe the "isFactory" is allowing it ?

This is sloppy and from years ago but the "MiltaryBase" only allows infantry builds

Screenshot from 2026-04-07 16-58-45.png

The Infantry are the only ones that require the MB. The Armour doesn't e.g.

Screenshot from 2026-04-07 16-59-07.png

98c84541-a0b5-42a0-a4c0-b352c4c6ece3-image.png

]]>https://forums.triplea-game.org/post/76581https://forums.triplea-game.org/post/76581Tue, 07 Apr 2026 22:01:30 GMT