[Freeciv-Dev] Re: (PR#5079) mighty howitzers

["Christian Knoke" <chrisk@xxxxxxxxx>]

On Wed, Aug 13, 2003 at 01:48:33PM -0700, Jason Short wrote:
> Christian Knoke wrote:
> > CVS 13 AUG 2003 GTK 1
> > 
> > My alpine troops (veteran) have an attack chance of 28% against howitzers
> > (veteran status unknown) on pure plains terrain, according to the popup.
> > 
> > Alpine Troops: Attack: 5 Hitpoints: 20
> > 
> > Howitzer:      Defense: 2 Hitpoints: 30
> > 
> > Default ruleset.
> > 
> > I cannot believe that. Also, I rather loose these battles.
> 
> Try this patch.  What's the output?

Attacking a stach of Mech.Inf. with an alpine troops (Gebirgsjäger):

2: Calculating win chance:
2:   Gebirgsjäger:      A: 75, HP: 16, FP: 1
2:   Mech. Inf.:        D: 198, HP: 30, FP: 1
2:   Calculated win chance as 0,000000.
2: Calculating win chance:
2:   Gebirgsjäger:      A: 75, HP: 16, FP: 1
2:   Mech. Inf.:        D: 132, HP: 30, FP: 1
2:   Calculated win chance as 0,000033.
2: Calculating win chance:
2:   Gebirgsjäger:      A: 75, HP: 16, FP: 1
2:   Mech. Inf.:        D: 132, HP: 30, FP: 1
2:   Calculated win chance as 0,000033.
2: Calculating win chance:
2:   Gebirgsjäger:      A: 75, HP: 16, FP: 1
2:   Mech. Inf.:        D: 198, HP: 30, FP: 1
2:   Calculated win chance as 0,000000.
2: Calculating win chance:
2:   Gebirgsjäger:      A: 75, HP: 16, FP: 1
2:   Diplomat:  D: 0, HP: 10, FP: 1
2:   Calculated win chance as 1,000000.

So we see veteran and non-veteran Mech. Infs here, all with full HP.

60 (defence) * 1.5 (forest) * 1.5 (river) * 1.5 (veteran) = 202.5
60 (defence) * 1.5 (forest) * 1.5 (river)                 = 135.0

So the difference is because of use of integer instead of float?

2: Calculating win chance:
2:   Gebirgsjäger:      A: 75, HP: 20, FP: 1
2:   Haubitze:  D: 30, HP: 30, FP: 2
2:   Calculated win chance as 0,286300.

A veteran howitzer here. This looks correct.

Christian

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Christian Knoke          * * *          http://www.cknoke.de
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