[Vince]

PHP код:

new const checkPointRadius = 15;

new 
    Float:randomAngle = float(random(360)),
    Float:randomDistance = random(checkPointRadius); 

new
    Float:dropX = checkPointX + floatsin(-randomAngle, degrees) * randomDistance,
    Float:dropY = checkPointY + floatcos(-randomAngle, degrees) * randomDistance,
    Float:dropZ = checkPointZ + 0.5; 


Something like that should work. This picks a random angle between 0 and 360 (a full circle, as you know) and a random distance between 0 and the size of the radius of the checkpoint. Then some trig is done to calculate the coordinates at the specified angle and the specified distance. Can't really explain that. Rather mathematically complex.