/// <summary>
/// Find a target on the aiming line.
/// Sets LineTaget when a target is aimed at.
/// </summary>
public Fixed AimLineAttack(Mobj shooter, Angle angle, Fixed range)
{
shooter = world.SubstNullMobj(shooter);
currentShooter = shooter;
currentShooterZ = shooter.Z + (shooter.Height >> 1) + Fixed.FromInt(8);
currentRange = range;
var targetX = shooter.X + range.ToIntFloor() * Trig.Cos(angle);
var targetY = shooter.Y + range.ToIntFloor() * Trig.Sin(angle);
// Can't shoot outside view angles.
topSlope = Fixed.FromInt(100) / 160;
bottomSlope = Fixed.FromInt(-100) / 160;
lineTarget = null;
world.PathTraversal.PathTraverse(
shooter.X, shooter.Y,
targetX, targetY,
PathTraverseFlags.AddLines | PathTraverseFlags.AddThings,
aimTraverseFunc);
if (lineTarget != null)
{
return(currentAimSlope);
}
return(Fixed.Zero);
}