Difference between revisions of "GetDistanceInTiles"
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This function will calculate the absolute value of the difference between A and B (for both x and y) and the highest value of the two is returned. The Z value is ignored when calculating the difference. | This function will calculate the absolute value of the difference between A and B (for both x and y) and the highest value of the two is returned. The Z value is ignored when calculating the difference. | ||
Pseudo-code (using signed integers):<pre> | Pseudo-code (using signed integers):<pre> | ||
| − | integer | + | integer getDistanceInTiles(location A, location B) |
{ | { | ||
// NOTE TO SELF: I should clear this up when I'm not so sleepy | // NOTE TO SELF: I should clear this up when I'm not so sleepy | ||
Revision as of 22:41, 14 April 2010
integer getDistanceInTiles(location A, location B);
This function will calculate the absolute value of the difference between A and B (for both x and y) and the highest value of the two is returned. The Z value is ignored when calculating the difference.
Pseudo-code (using signed integers):
integer getDistanceInTiles(location A, location B)
{
// NOTE TO SELF: I should clear this up when I'm not so sleepy
tmpx = A.x >= 5120 ? 1 : 0;
tmpy = B.x >= 5120 ? 1 : 0;
if(tmpx ^ tmpy != 0)
return 9999;
Xdiff = A.x - B.x;
ydiff = A.y - B.y;
if(xdiff < 0)
xdiff = -xdiff;
if(ydiff < 0)
ydiff = -ydiff;
if(A.x < 5120)
{
if(5120 - xdiff > xdiff)
xdiff = 5120 - xdiff;
if(4096 - ydiff > ydiff)
ydiff = 4096 - ydiff;
}
if(xdiff > ydiff)
retval = xdiff;
else
retval = ydiff;
return retval;
}
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