Getting an approximate value

ID:168862
 
Aug 20 2005, 12:26 am (Edited on Aug 20 2005, 4:35 am)
Say for example I have an area that is 9x9.

I want to be able to use this area to report the position of a mob relative to the worlds maximum proportions

Example:

world.maxx = 100
world.maxy = 100
players position = 20,46

I wish to convert that into a manor that would display the players approximate position in a 9x9 representation of the world. It doesn't have to have anything to do with pixels, just flat coords is good.

Hopefully that makes sense to you.

Any help would be incredibly appreciated.

Thanks In Advance

- GunRunner
Aug 20 2005, 11:40 pm
Use simple percentages. What percentage of 100x100 is does that player have? x percentage is 20%, y is 46%. 20% of 9 is 9/5 (1.8), so the x co-ordinate can be 2 in this special map. Get the idea?
Aug 21 2005, 12:49 am
In response to Jp
Jp wrote:
What percentage of 100x100 is does that player have? [blah blah] Get the idea?

is does? When you're talkin jibberish, I can't get much of any idea.

Hiead
Aug 21 2005, 1:11 am
In response to Hiead
'Tis not gibberish. Maybe just impenetrable.

As far as I get it, GunRunner wants to put player icons or whatever on a 9x9 map, based on where they are in a 100x100 map. So find out the percentage of mob.x to map.x, as well as mob.y to map.y, and use that percentage for our location in the 9x9 map.
Aug 21 2005, 6:35 am
In response to Jp
Jp wrote:
As far as I get it, GunRunner wants to put player icons or whatever on a 9x9 map, based on where they are in a 100x100 map. So find out the percentage of mob.x to map.x, as well as mob.y to map.y, and use that percentage for our location in the 9x9 map.

Much better, thanks :)

Hiead
Aug 21 2005, 5:45 pm
In response to Hiead
Hey man thanks heaps for that. I'm not gonna pretend I would've ever gotten it! I'll let you all know how it goes.

- GunRunner
Aug 22 2005, 9:46 am
In response to Jp
Jp wrote:
Use simple percentages. What percentage of 100x100 is does that player have? x percentage is 20%, y is 46%. 20% of 9 is 9/5 (1.8), so the x co-ordinate can be 2 in this special map. Get the idea?

Note that with the above calculations, the resulting coordinate is 0-based, not 1-based like the real map.

Lummox JR
Aug 22 2005, 4:31 pm
In response to Lummox JR
Just make the map 10% the width of your map, and save yourself rounding everything off all the time.
Aug 23 2005, 7:11 pm
In response to GunRunner
 
            var/X = (world.maxx)
            var/Y = (world.maxy)
            var/mX = src.last_x
            var/mY = src.last_y
            var/percX = (mX/X) * 100
            var/percY = (mY/Y) * 100
            
            var/mapX = round((percX/9))
            var/mapY = round((percY/9))

            M.screen_loc = "[mapX]+2,[mapY]+6"


Here's the code I have come up with... I'm sure this doesnt work properly as when you are at the locaiton of 100,100 it returns that the location would be at 11,11 on the map and that is outside the 9x9 area... Have I done something wrong or is it just not possible?

- GunRunner
Aug 23 2005, 7:15 pm
In response to Nukes4U
Not really he point, I want it so that it'll adapt to any situation.

- GunRunner
Aug 24 2005, 6:00 am
In response to GunRunner
GunRunner wrote:
>           var/X = (world.maxx)
>           var/Y = (world.maxy)
>           var/mX = src.last_x
>           var/mY = src.last_y
>           var/percX = (mX/X) * 100
>           var/percY = (mY/Y) * 100
>           
>           var/mapX = round((percX/9))
>           var/mapY = round((percY/9))
> 
>           M.screen_loc = "[mapX]+2,[mapY]+6"
>

Here's the code I have come up with... I'm sure this doesnt work properly as when you are at the locaiton of 100,100 it returns that the location would be at 11,11 on the map and that is outside the 9x9 area... Have I done something wrong or is it just not possible?

Yep, you've done something wrong. There are two main things here that are incorrect.

First, you took the word "percentage" too literally. You don't need to multiply by 100 here. Just having the fraction is good enough.

Second, you divided by 9 instead of multiplying. That's probably a natural consequence of the first mistake, since you rightly figured that multiplying 100 by 9 scales it up by 900.

Lummox JR
Aug 24 2005, 6:09 am
In response to Lummox JR
Thansk heaps for the help, this is why we ask questions to learn!

- GunRunner