the real linear measure of Kickoff2 Pitch

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Torchiador
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the real linear measure of Kickoff2 Pitch

Postby Torchiador » Wed Jul 11, 2007 3:19 pm

Reading the speed reported right now from the "CV Electronics" in KO2CV, seemed to me that the speeds reported were too fast.
Speaking with the president of CV Electronics I got to know that the systems was: 1 pixel=0,1 m that makes the pitch 139m long (the ko2 pitch length is 1392 pixels long, goal to goal).
This pitch lenght seemed to me too much long and the conversion system was not perfect but near to perfect so I investigated on real soccer pitches.

We know that there are some restrictions of lenght and width about an international soccer pitch and I'm sure that . beside this one, some leghts are fixed and always the same on every soccer pitch, as the PB area, the midfield circle radius, the penalty spot distance and goal line; distance between posts of the goal.
About the speed, we know that the fastest man in the world runs 100m in (about) 10 seconds. (AVG speed 10 m/s)

A regular international soccer pitch cans be long 100 to 110 m. and it cans be wide 64 to 75 m.
with the unit of measurement current, the KO2 pitch is too long.

Trying to find the correct system to convert pixel in meters I used the lenght between the penalty spot and the goal line but the graphic approximation (because of the tilemap) was too high so I changed, using the midfield circle: the radius is 128 pixel(a really good number :) ) and looking the graphics, seems to me that there is the lowest level of tilemap graphic approximation so I used it:
real midfield circle radius is: 9.15 m.
128/9.15=13,989 (we can say 14) so 1 meter =14 pixels.
In this way the KO2 pitch is long 99,5 m (we can say 100m :) ) and the pitch is wide 65 m! :) (912pixel/14=65)
It could be really good but we have to check the other real linear measures on the pitch, as goal dimension and penalty box.
comparing the real measures with the two systems we have:
goal width: 7.3m(real); 9,6m(1:10); 6,9(1:14)
penalty box width: 16,5m (real); 21,2 (1:10); 15,4(1:14)
penalty box lenght: 40,3m (real); 52,8(1:10); 37,7(1:14).

It works! the circle radius was perfect! :D
Keeping in mind that Dino had got the tilemap limitation, he had a really good result in to keep the right aspet ratio of KO2 pitch.
With this conversion system, we have the player speed more near to human speed: the speed is 30% lower than what we have seen with CV097 (20m/s the double of the top human speed). of course, 14m/s is really high but that is... the ko2 player run really fast!
So we can say that the dimensions of the pitch are: 100m x 65m .
please, note that: these dimensions coincide with the minimum dimensions of a regular international soccer pitch! :wink:
Last edited by Torchiador on Thu Jul 12, 2007 10:06 am, edited 1 time in total.
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Ely
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Postby Ely » Wed Jul 11, 2007 3:35 pm

Blimey Gianni, no work to do today :lol:

All very interesting mind!
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Postby Steve Camber » Wed Jul 11, 2007 4:01 pm

I was using 1 pixel = 10cm.

Now, after the excellent research, we're switching to 1pixel = 14cm?

Surely that will make the pitch even bigger?

Do you mean 1 pixel = 7.143cm ? (100/14)

My head hurts.
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Postby Torchiador » Wed Jul 11, 2007 4:04 pm

Ely wrote:Blimey Gianni, no work to do today :lol:

All very interesting mind!

you're right, I usually work in the night, burgling houses. Image
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Torchiador
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Postby Torchiador » Wed Jul 11, 2007 4:19 pm

Steve Camber wrote:I was using 1 pixel = 10cm.

Now, after the excellent research, we're switching to 1pixel = 14cm?

Surely that will make the pitch even bigger?

Do you mean 1 pixel = 7.143cm ? (100/14)

My head hurts.

erm... I mean 1 meter= 14 pixel instead of 1 meter=10 pixel :? so, right 1 pixel = 7.143cm. Anyway in this case we can use real number I found, that's to say 13.989 (128/9.15) so 1 pixel = 7,148cm
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Postby Torchiador » Wed Jul 11, 2007 4:28 pm

Another thing: the real high of the bar is 2,44 m (244cm) but I can't do anything to measure it in ko2... Or I can measure the shadow projected on the grass... Image
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Postby Steve Camber » Wed Jul 11, 2007 4:32 pm

The crossbar top edge is at a height of 36 "pixels" (257cm) , the bottom edge is at 28 "pixels" (200cm).

So that's 8 "pixels" thick = 57cm!!
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Postby Torchiador » Wed Jul 11, 2007 4:53 pm

Steve Camber wrote:The crossbar top edge is at a height of 36 "pixels" (257cm) , the bottom edge is at 28 "pixels" (200cm).

So that's 8 "pixels" thick = 57cm!!


the diagonal shadow is lenght 23 pixel, it means that, calcolating the degree of the sun, the bar is high 329 cm Image


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Postby Torchiador » Wed Jul 11, 2007 5:18 pm

Steve Camber wrote:The crossbar top edge is at a height of 36 "pixels" (257cm) , the bottom edge is at 28 "pixels" (200cm).

So that's 8 "pixels" thick = 57cm!!


I didn't read carefully....

8 pixels?!?!?!?!?!?!?!?!ImageImageImageImageImageImageImage

yes, the high's matter in KO2 is really strange...
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Postby gdh82 » Wed Jul 11, 2007 5:33 pm

Interesting thread, guys!

Although I could live with the original 1:10, I also support Gianni's more realistic 1: 7.143. 8) 8)

So 1: 7.143 would make the pitch of 1392 pixels = 99.43m :)


Wierd that the crossbar is so thick! :?

Not to complicate things but to get a crossbar height of 28 pixels equal 2.44m, I calculate a ratio of 1: 8.714. This would then produce a pitch length of 121.29m (I think!). That's enough number crunching for one post! :D
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Postby alkis21 » Wed Jul 11, 2007 5:40 pm

Can any of you ner... uh, I mean can any of you gentlemen calculate how tall the players are?
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Postby Torchiador » Wed Jul 11, 2007 5:57 pm

alkis21 wrote:Can any of you ner... uh, I mean can any of you gentlemen calculate how tall the players are?


ner what? :lol: Sure Alkis you want to know ho how tall the players are? maybe a bit embarrassing for yo... uh, I mean, embarrassing for young player players! :D
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Postby gdh82 » Wed Jul 11, 2007 6:01 pm

alkis21 wrote:Can any of you ner... uh, I mean can any of you gentlemen .....


:lol: :lol:

You're only jealous of such mathematical wizardry! ;) :oops:

I don't know their exact height but I'm guessing they're taller than you mate! ;) :lol:
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