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Re: Interception fleet movement order

Mon, 21 December 2009 07:06

paul_ik

Master Chief Petty Officer

Messages: 98
Registered: November 2009
Location: Belarus GMT+2

So we have an estimation of "smooth" chasing (when the positions of ships are being updated in steps) only in the case of circular reference? And when there is no circular reference then the chased fleet is moved and then the chaser tries to get to that position, right?

At first it seems there is no problem about it. But theoretically this can be exploited. For example imagine small enemy fleet positioned at (1000;1000). It is quick (having warp 10) and targets your fleet with some unprotected cargo ships at (1080;1000). Cargo ships are very slow (warp 4) and can't reach any homeworld within the next turn. The good news is that you have a large army positioned at (1012; 1000) (that is between the enemy and cargo fleets). The bad news is that this army is slow (warp 7).

Scenario 1: cargo ships try to run away to the nearest homeworld, army tries to intercept the enemy. But the both fail - the enemy fleet cathes the cargo ships the next turn and destroys them all. Sad

The next turn enemy has no problem running unpunished saying "haw-haw-haw".

Scenario 2: having read Jeff's explanation our commander suddenly gets the cargo saving plan: he just needs to target his army with his cargo ships! By doing this he gets circular reference: enemy -> cargo -> army -> enemy ->... and the movement is calculated in steps. So the movement begins. In fact there is no difference whether the enemy fleet moves first or the army does. Enemy fleet moves 10 * 10 / 10 = 10 l.y. each step and army 7 * 7 / 10 = 5 (if it rounded to 4 the result of the example is the same). If enemy fleet moves first then: enemy -> (1010; 1000) and army has no problem catching it. If army moves first then: army -> (1007; 1000), enemy -> (1010; 1000) and army catches it. Hurray! The cargo is saved! Very Happy

I know this example is pretty unreal but there are many others which, I believe, are encountered often. Every time we have our ship try to really intercept (and not move to that target waypoint 1 position).

So I think it's a flaw in game that the movement is not always calculated "smoothly". The reason why it is so is clear: in order to get proper distances traveled by ships which are not involved into any chasing the program must use floating values while calculating ships positions at each step and rounding the position only at the final step (or else if we use rounding on each step the ship with warp 6 can travel 40 l.y. instead of 36).

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[Message index]

		Interception fleet movement order By: Adacore on Fri, 18 July 2008 02:46
		Re: Interception fleet movement order By: gible on Fri, 18 July 2008 03:02
		Re: Interception fleet movement order By: m.a@stars on Fri, 18 July 2008 04:11
		Re: Interception fleet movement order By: Adacore on Fri, 18 July 2008 03:06
		Re: Interception fleet movement order By: m.a@stars on Fri, 18 July 2008 04:31
		Re: Interception fleet movement order By: paul_ik on Mon, 21 December 2009 07:06
		Re: Interception fleet movement order By: m.a@stars on Mon, 21 December 2009 10:39
		Re: Interception fleet movement order By: mazda on Mon, 21 December 2009 16:11
		Re: Interception fleet movement order By: vonKreedon on Tue, 22 December 2009 12:04
		Re: Interception fleet movement order By: paul_ik on Mon, 21 December 2009 12:42
		Re: Interception fleet movement order By: m.a@stars on Tue, 22 December 2009 10:24
		Re: Interception fleet movement order By: paul_ik on Tue, 22 December 2009 03:09
		Re: Interception fleet movement order By: paul_ik on Tue, 22 December 2009 13:22
		Re: Interception fleet movement order By: m.a@stars on Wed, 23 December 2009 20:18
		Re: Interception fleet movement order By: paul_ik on Thu, 24 December 2009 02:50
		Re: Interception fleet movement order By: paul_ik on Thu, 24 December 2009 13:16
		Re: Interception fleet movement order By: m.a@stars on Fri, 25 December 2009 15:03
		Re: Interception fleet movement order By: craebild on Fri, 25 December 2009 16:52
		Re: Interception fleet movement order By: m.a@stars on Sat, 26 December 2009 05:14
		Re: Interception fleet movement order By: Eagle of Fire on Thu, 24 December 2009 15:03
		Re: Interception fleet movement order By: paul_ik on Fri, 25 December 2009 18:51
		Re: Interception fleet movement order By: m.a@stars on Wed, 30 December 2009 06:49
		Re: Interception fleet movement order By: mazda on Thu, 31 December 2009 06:46
		Re: Interception fleet movement order By: paul_ik on Thu, 31 December 2009 07:25
		Re: Interception fleet movement order By: Micha on Thu, 31 December 2009 08:16
		Re: Interception fleet movement order By: Raindancer on Mon, 25 January 2010 23:32
		Re: Interception fleet movement order By: vonKreedon on Tue, 26 January 2010 10:23
		Re: Interception fleet movement order By: m.a@stars on Sat, 30 January 2010 04:43
		Re: Interception fleet movement order By: Raindancer on Sat, 30 January 2010 09:00
		Re: Interception fleet movement order By: m.a@stars on Sun, 31 January 2010 03:58
		Re: Interception fleet movement order By: Raindancer on Tue, 02 February 2010 11:24
		Re: Interception fleet movement order By: m.a@stars on Wed, 03 February 2010 10:17
		Re: Interception fleet movement order By: Micha on Wed, 03 February 2010 10:29
		Re: Interception fleet movement order By: craebild on Wed, 03 February 2010 15:01
		Re: Interception fleet movement order By: Micha on Wed, 03 February 2010 16:56
		Re: Interception fleet movement order By: m.a@stars on Wed, 03 February 2010 23:01
		Re: Interception fleet movement order By: Raindancer on Thu, 04 February 2010 10:27
		Re: Interception fleet movement order By: m.a@stars on Fri, 05 February 2010 18:31
		Re: Interception fleet movement order By: Raindancer on Fri, 05 February 2010 19:30
		Re: Interception fleet movement order By: m.a@stars on Sat, 06 February 2010 11:49
		Re: Interception fleet movement order By: paul_ik on Tue, 26 January 2010 16:04

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