Canvas.scale error

[Ravm]

Hi everyone, i'm here because i have a little problem with the canvas.

i'm doing a multiplayer game, MMORPG or what ever, i need your help because i have this lines:
 

 

ctx.save();ctx.scale(-1,1);ctx.drawImage(img,x - 5 ,y - 5,Sx,Sy);ctx.restore(); 

 

That lines are used to get an horizontal flip in the context, and draw de sprite, but my problem is that isn't working and i don't know why.

I test with ctx.scale(2,2); and it's works but when i want to flip horizontal isn't works(when i put scale(-1,X)).

So if someone knows about this, please answer me.

 

EDIT:
My problem is the sprite, when i scale the context, the sprite or the image, disappears.

 

PIC:

 

Thanks.

[rich]

When you scale the context like that you're basically inverting the coordinate system as well. You need to translate first, then scale, then drawImage with probably a 0,0 or negative half-width/height origin (depending on desired outcome).

[Ravm]

EDIT 

 

Thanks man, i fixed the problem, thanks!

i flip the context and use this formule to get the same position of the player:

ctx.drawImage(img, canvas.width - (x-5) -Sx,y-5,Sx,Sy);