region grid reference formula
X-axis ( X-20) *32768,(X-20+1)*32768
Y-axis ( Y-18 ) *32768,(Y-18+1)*32768
e.g water city (23_24),
(X-20 ) *32768,(X-20+1 ) *32768 = 98304, 131072
(Y-18 ) *32768,(Y-18+1 ) *32768-1 = 196608, 229376
23_24 region is within grid reference
(98304,196608) (98304,229376) (131072,229376) (131072,196608)
grid 20_18 is 0_0 ingame
(real ingame X / 32768 ) + 20 for X
(real ingame Y / 32768 ) + 18 for Y
and round down to nearest int
the bloacks are stored like so in the file.
1 9 17 25 33 41 49 57
2 10 18 26 34 42 50 58
3 11 19 27 35 43 51 59
4 12 20 28 36 44 52 60
5 13 21 29 37 45 53 61
6 14 22 30 38 46 54 62
7 15 23 31 39 47 55 63
8 16 24 32 40 48 56 64
X = ->
y = ^
104304 = 3.183105469 + 20 = 23.183105469 (round to lowest int)
200608 = 6.183105469 + 18 = 24.183105469 (round to lowest int)
we can see we are at grid 23_24
now work out the 0,0 values for 23,24
3 * 32768 = 98304
6 * 32768 = 196608
x = 98304
y = 196608
we can now subtract the 0,0 from the real players x,y
104304 - 98304 = 6000 (2nd column)
200608 - 196608 = 4000 (1st row)
next we divide these by 4096 ( the grid size we use in our files)
so we KNOW that our block is at 4,6 = 30 = 3*8+6
so we KNOW that our block is at 1,1 = 1 = 0*8+1
so we KNOW that our block is at 7,7 = 55 = 6*8+7
so we KNOW that our block is at 2,1 = 9 = 1*8+1
( x )(6000/4096) = 1.46 (round up) = 2
( y )(4000/4096) = .89 (round up) = 1
( ( x * 8 ) -1) + ( y ) = grid number = 9
Now we need to convert this to our l2jgrid.world which is 88 * 128
we know we have the
23_24 for our initial start so we subract 16_10 this is the top right grid
this gives us
07 _ 14
we know each conv.dat is 32768 so we can work out our initial file
7 * 32768 / 4096 = 56
14 * 32768 / 4096 = 112
now we know the sub values how inside this
x and y were 2 and 1
so we know its
2 * 4096 to add to the x
1 * 4096 to add to the y
56 + 2 = 58
112 + 1 = 113
so from our real ingame x(104304),y(200608)
we now know our l2jgrid.world x,y coord as well as the file name
file 23_24_l2jgrid.world and load offset 9
switch on l2jgrid(58,113)