no more rotating -- try horizontally flipping!

[drkknght]

i'm currently messing around with some game code, in an effort to personalize it. its a basic car-around-the-track type set up for now.

the code they have is:

function setCarMove(d) {
	if (d == 0) { nextX = pacX; nextY = pacY - 1; car._rotation = 90; }
	else if (d == 1) { nextX = pacX + 1; nextY = pacY; car._rotation = 180; }
	else if (d == 2) { nextX = pacX; nextY = pacY + 1; car._rotation = -90; }
	else if (d == 3) { nextX = pacX - 1; nextY = pacY; car._rotation = 0; }

so, turning left is done by "car._rotation = 180;"

...however... because of the graphics i've used, my car can't be roatated, or else it looks upside-down. is there a way to set this one variable to flip the image horizontally, instead?

[SaphuA]

You can use _xscale,
_xscale = -100;

[drkknght]

heya saphua!

hmm... that seems to have done what i asked for, but not what i wanted!

altering that one variable meant that the rest of the script no longer operated as it should, because the rotations all depended upon one another (so fixing one direction just screws up another).

oy!

now, i'm not even sure how exactly i ask for help!

i think what i'd need to do is somehow create a different movieclip for each direction...(??)

[Dusarn]

Try this I think that should fix the problem.

code:

---

function setCarMove(d) 

{

if (d == 0) 

{ nextX = pacX; 

nextY = pacY - 1; 

car._rotation = 90; 

car._xscale = 100;

}else if (d == 1) 

{ nextX = pacX + 1; 

nextY = pacY; 

car._rotation = 0; 

car._xscale = -100

}else if (d == 2) 

{ nextX = pacX; 

nextY = pacY + 1; 

car._rotation = -90; 

car._xscale = 100;

}else if (d == 3) 

{ nextX = pacX - 1; 

nextY = pacY; 

car._rotation = 0; 

}

}

---

Basically since we are changing the xscale if d==1, then we need to set the xscale back to how it originally was beforehand. Otherwise everything is going to be looking the opposite of what it should be. Also you need to set the cars rotation back to 0 before you do the -xscale to make it look right too.
(Sorry I reformatted the code, I'm just used to doing it that way and I think its easier to read )

[drkknght]

heya dusarn!

that almost works perfectly. everything flows as it should except when the car is headed to the right, and you want it to immediately go to the left. in that case, the car moves to the left, but is facing to the right.

every other direciton works fine.

man, this stuff is makin me nutty!

[Dusarn]

Sorry about that I was thinking the car had to make a full rotation to go in the opposite direction. So if the car can change directions from right to left then you just need to change back the xscale. For example: if the car is going right the xscale is at -100%(horizontally flipped), so then if you change the direction of the car to left then the car is still flipped(-100%) but is going in the opposite direction.

So all you need to do too fix it is to add 'car._xscale = 100' in the (d == 3) section of the code.

[drkknght]

ahhh, gotcha!

function setCarMove(d)
{
        if (d == 0)
        { nextX = pacX;
                nextY = pacY - 1;
                car._rotation = 90;
                car._xscale = 100;
        }else if (d == 1)
        { nextX = pacX + 1;
                nextY = pacY;
                car._rotation = 0;
                car._xscale = -100
        }else if (d == 2)
        { nextX = pacX;
                nextY = pacY + 1;
                car._rotation = -90;
                car._xscale = 100;
        }else if (d == 3)
        { nextX = pacX - 1;
                nextY = pacY;
                car._rotation = 0;
                car._xscale = 100;
        }
}

this works perfectly!!

insanity = over! thank you so much!