Turn() Question

ID:2133910
 
Aug 18 2016, 1:44 am
(See the best response by Nadrew.)
Code:
mob/player
    verb
        TurnLeft()
            set hidden = 1
            if(dead)return
            angle +=4
            //if(angle > 360)
            //  angle = 0
            var/icon/I = icon('Truck.dmi', "truck")
            I.Turn(-angle)
            icon = I
        TurnRight()
            set hidden = 1
            if(dead)return
            angle -=4
        //  if(angle < 0)
        //      angle = 360
            var/icon/I = icon('Truck.dmi', "truck")
            I.Turn(-angle)
            icon = I


Problem description:

I am wondering if its better to reset angle to 360 rather than stack angle to infinity or it doesn`t really matter at all.



Aug 18 2016, 3:22 am
I have a pretty nice way of clamping angle within [180, 180):
angle = round(angle, 360) - angle

Also, I recommend using transform instead of icon.Turn() for rotating your objects. It's rendered client-side, so the server doesn't do nearly as much computation:
// set transform to the default transform rotated by
// [angle] degrees clockwise
transform = turn(matrix(), angle)
Aug 18 2016, 4:35 am (Edited on Aug 18 2016, 4:46 am)
Maybe thats also the reason why would the hole icon disappear sometimes.

I appriciate your help, thanks!

Edit:

It seems I cannot use 
transform = turn(matrix(), angle)
since this is already used when you move your mosue for the other object. If I do use it the hole screen will be moving


screenshot: http://prnt.sc/c79j7a


Aug 18 2016, 10:51 am
Best response
That's because you're applying client.transform and not mob.transform.
Aug 18 2016, 11:48 am
I was really thinking to make 90 icons. Thanks :)