According to a value, determine the angle between two vectors

[mapleegreen]

function bool NeedToTurn(vector targ)
{
local vector LookDir, AimDir;

LookDir = Vector(Rotation);
LookDir.Z = 0;
LookDir = Normal(LookDir);
AimDir = targ - Location;
AimDir.Z = 0;
AimDir = Normal(AimDir);

return ((LookDir Dot AimDir) < 0.93);
}0.93 is how many degrees? If it is 45 degrees, 60 degrees, how much value should be?

[Angel_Mapper]

Dot products are the cosine of the angle, so just arccos it.

[Wormbo]

Note that the dot product only calculates the cosine of the angle if both vectors are normalized.

[Angel_Mapper]

Those are the two rules of life:

1) Always normalize your vectors.
2) Never get involved in a land war in Asia.

[mapleegreen]

I know ,thank you

[mapleegreen]

I know ,thank you