Hello,
I have a security camera entity that sweeps across a 180 degree arc. When it finds a target, it tries to stay aimed at that target.
However, I'm having problems with angles being greater than 360 from each other, causing the camera to sometimes spin in the wrong direction, or outside of its 180 arc.
What I have at the moment is a kind of hacked together solution that works fine as long as the security camera is facing 'south' in WED. If I have one facing the opposite direction, it gets confused again.
// IF ALERT IS RAISED
if (alert == 1)
{
// Calculate direction to target
vec_diff(tempVector,ball.x,my.x);
vec_to_angle(alertAngle,tempVector);
alertAngle.roll = 0;
alertAngle.tilt = 0;
// Crappy code to compensate for wildly different angles
alertAngle.pan += 360;
// Calculate difference between my angle, and direction to target
tempAngle.pan = my.pan - alertAngle.pan;
// Aim Spotlight towards target
if (tempAngle.pan > 0)
{
// Rotate clockwise
rotateDir = 1;
}
if (tempAngle.pan <= 0)
{
// Rotate anticlockwise
rotateDir = 0;
}
}
// IF ALERT IS NOT RAISED
else
{
// Sweep spotlight back and forth across 180 degree arc
if (my.pan >= restPosition.pan +90)
{
// Rotate clockwise
rotateDir = 1;
}
if (my.pan <= restPosition.pan -90)
{
// Rotate anticlockwise
rotateDir = 0;
}
}
// Rotate spotlight
if (rotateDir == 0)
{
// Rotate anticlockwise
my.pan += 2*time_step;
}
if (rotateDir == 1)
{
// Rotate clockwise
my.pan -= 2*time_step;
}
My code's probably a bit of a mess. But if anyone can offer any advice, it would be appreciated.
Also, another lesser problem: The Watch feature of SED. What do I type into it to make it watch a variable defined within an entity's action? This would make debugging my problems a lot easier.
