Weird Bug With Screen->Arc Drawing

[ywkls]

I'm confused... is startangle or endangle supposed to be larger?
I think part of this is due to the fact the Arc works counterclockwise and everything else rotates in the opposite direction.
Strangely, the function seems to do what it is supposed to even if either is true? (Startangle is smaller or larger than endangle)
I hadn't tried WrapDegrees yet (couldn't remember what it did) so I wrote up this version instead.

angle = Angle(this->X+24, this->Y+8,Link->X+8,Link->Y);
angle*=-1;
if(angle<0)
      angle+=360;

Since adding 360 to the negative angle would have it rotate to the exact same angle(only positive) I thought that might work.
But, that hasn't proven to be the case.
Looking at WrapDegrees, I'm not sure it'd be better; but I'll try it and post the results afterward.

[ZoriaRPG]

I'm confused... is startangle or endangle supposed to be larger?
I think part of this is due to the fact the Arc works counterclockwise and everything else rotates in the opposite direction.
Strangely, the function seems to do what it is supposed to even if either is true? (Startangle is smaller or larger than endangle)
I hadn't tried WrapDegrees yet (couldn't remember what it did) so I wrote up this version instead.

angle = Angle(this->X+24, this->Y+8,Link->X+8,Link->Y);
angle*=-1;
if(angle<0)
      angle+=360;

Since adding 360 to the negative angle would have it rotate to the exact same angle(only positive) I thought that might work.
But, that hasn't proven to be the case.
Looking at WrapDegrees, I'm not sure it'd be better; but I'll try it and post the results afterward.

EndAngle should be higher. Try running your code with the debugging function that I posted.

[ywkls]

EndAngle should be higher. Try running your code with the debugging function that I posted.

I feel almost like Arc needs a conversion function to work easily with other stuff, since it is so non-intuitive.
As I posted on Discord, I was confused because the correct (and incorrect) results happened both when startangle was larger and when it was smaller.

Using the function you posted, I changed the code like so...

//Section 120. Eye Sentry

ffc script Eye_Sentry{
	void run(int item_id, int perm, bool left){
		bool triggered = false;
		float angle;
		int sfxTimer;
		if(Screen->D[perm]==1)
			triggered= true;
		while(!Link->Item[item_id])
			Waitframe();
		//Screen->D[perm]=1;
		this->Data++;
		while(!triggered){
			if(left){
				angle = Angle(this->X+24, this->Y+8,Link->X+8,Link->Y);
				//angle*=-1;
				Arc(3, this->X+24, this->Y+8, 256, angle-10,angle+10, 1, 1, 0, 0, 0, true, true, OP_TRANS,true);	
				
			}
			else{
				angle = Angle(this->X+8, this->Y+8,Link->X+8,Link->Y);
				//angle*=-1;
				Arc(3, this->X+8, this->Y+8, 256, angle-10,angle+10, 1, 1, 0, 0, 0, true, true, OP_TRANS,true);	
				
			}
			//Create sound every sixty seconds.
			if ( sfxTimer == 0 ) Game->PlaySound(SFX_X_RAY);
			sfxTimer = (sfxTimer+1)% 60;
			Waitframe();
		}
		this->Data=GH_INVISIBLE_COMBO;
	}
}

I didn't get the screen-covering effect, just an arc that was on the opposite side of the screen from what I wanted.
I'm not sure about the best way to rotate it to where it should be.
I'd previously used angle *=-1 but that didn't really work. Nor did using WrapDegrees on the outcome of that.

Any suggestions? My alternative is to use a versiion of Screen->Triangle Moosh provided which I've already gotten to replicate the effect I want.
(Hence my interest here is mostly to find the cause of this.)