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      Special Upgrade 4 Tech Tips   12/27/2016

      Hi all! Now that Upgrade 4 is out and about in large quantities we have now discovered a few SNAFUs that happen out in the scary, real world that is home computing.  Fortunately the rate of problems is extremely small and so far most are easily worked around.  We've identified a few issues that have similar causes which we have clear instructions for work arounds here they are: 1.  CMRT Windows customers need to re-license their original key.  This is a result of improvements to the licensing system which CMBN, CMBS, and CMFB are already using.  To do this launch CMRT with the Upgrade and the first time enter your Engine 4 key.  Exit and then use the "Activate New Products" shortcut in your CMRT folder, then enter your Engine 3 license key.  That should do the trick. 2.  CMRT and CMBN MacOS customers have a similar situation as #2, however the "Activate New Products" is inside the Documents folder in their respective CM folders.  For CMBN you have to go through the process described above for each of your license keys.  There is no special order to follow. 3.  For CMBS and CMFB customers, you need to use the Activate New Products shortcut and enter your Upgrade 4 key.  If you launch the game and see a screen that says "LICENSE FAILURE: Base Game 4.0 is required." that is an indication you haven't yet gone through that procedure.  Provided you had a properly functioning copy before installing the Upgrade, that should be all you need to do.  If in the future you have to install from scratch on a new system you'll need to do the same procedure for both your original license key and your Upgrade 4.0 key. 4.  There's always a weird one and here it is.  A few Windows users are not getting "Activate New Products" shortcuts created during installation.  Apparently anti-virus software is preventing the installer from doing its job.  This might not be a problem right now, but it will prove to be an issue at some point in the future.  The solution is to create your own shortcut using the following steps: Disable your anti-virus software before you do anything. Go to your Desktop, right click on the Desktop itself, select NEW->SHORTCUT, use BROWSE to locate the CM EXE that you are trying to fix. The location is then written out. After it type in a single space and then paste this:

      -showui

      Click NEXT and give your new Shortcut a name (doesn't matter what). Confirm that and you're done. Double click on the new Shortcut and you should be prompted to license whatever it is you need to license. At this time we have not identified any issues that have not been worked around.  Let's hope it stays that way Steve
    • Battlefront.com

      Forum Reorganization   10/12/2017

      We've reorganized our Combat Mission Forums to reflect the fact that most of you are now running Engine 4 and that means you're all using the same basic code.  Because of that, there's no good reason to have the discussion about Combat Mission spread out over 5 separate sets of Forums.  There is now one General Discussion area with Tech Support and Scenario/Mod Tips sub forums.  The Family specific Tech Support Forums have been moved to a new CM2 Archives area and frozen in place. You might also notice we dropped the "x" from distinguishing between the first generation of CM games and the second.  The "x" was reluctantly adopted back in 2005 or so because at the time we had the original three CM games on European store shelves entitled CM1, CM2, and CM3 (CMBO, CMBB, and CMAK).  We didn't want to cause confusion so we added the "x".  Time has moved on and we have to, so the "x" is now gone from our public vocabulary as it has been from our private vocabulary for quite a while already.  Side note, Charles *NEVER* used the "x" so now we're all speaking the same language as him.  Which is important since he is the one programming them
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Ivanov

BMP-3 on the firing range

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On 12/9/2017 at 6:05 AM, The Steppenwulf said:

I'd like to see some even simpler features such as engine audio file cut out when tanks are on hide command - reflecting lower sound signature!

Would a tank have a lower tank signature?  I don’t expect they would turn off the engine so yes it would just be idling, but how quiet is an idling tank?  Think we need a professional to chime in. 

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2 hours ago, sburke said:

Would a tank have a lower tank signature?  I don’t expect they would turn off the engine so yes it would just be idling, but how quiet is an idling tank?  Think we need a professional to chime in. 

Tanks used in defensive situations (e.g. hull down, ambush positions) are almost certain to cut their engines. Gas is not unlimited. Back up electrical supply (APU) allows the vehicle's system to operate for reasonable periods of time without recharge. 

It's not just sound that can give a tank away, it's also the infrared heat signature provided from a hot running engine. A cold engine being much harder to spot. The question of how long to cool for the benefit to arise, are perhaps reasons why it probably isn't modelled. Nevertheless consider a player wishing to maintain armour in ambush from the start of the scenario and the engine therefore off. Clearly this should confer a "hide advantage" in this particular circumstance - from distant as well as close visual "spotters".

A benefit from zero sound signature probably only confer advantage against fairly local infantry on foot, since a force's own vehicles or aircraft own engine sounds will drown out enemy vehicles engine sound anyhow. It's these differentials that may explain why (I suspect) it hasn't been modelled but clearly there are some parameters where it could be applicable and simulated in the current CM engine as a new feature.  

Edited by The Steppenwulf

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Leopard 2 is a notoriously loud tank. The Swiss received so many civilian complaints about the engine roar reverberating off the hillsides that they retro-fitted a huge muffler system onto the back end. German tank crewe switched from traditional berets to caps with ear flaps because of the oppressive interior noise. Abrams' low sound signature gets bragged about so much that we're all tired of hearing about it ;).

Oh, and I believe the Army pulled the plug on Boston Dynamics robot mule program due to sound signature issues. It was rather like infantry going on patrol accompanied by a riding lawnmower.

Edited by MikeyD

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20 hours ago, MikeyD said:

Abrams' low sound signature gets bragged about so much that we're all tired of hearing about it

Conversely its heat signature is terrible due to the fact that it's a gas turbine engine and they run twice as hot as diesel. I would conjecture that Eastern Block vehicles, being diesel, have a lower heat signature in this regard, though there are other factors such as ambient temperature that are at play in all these matters. 

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