[Яростный Меч]

for (i=0; i<ArrCenter.length; i=i+2)
ctx.drawImage(Ugo, ArrCenter[i], ArrCenter[i+1] );

попробуй добавить {}

for (i=0; i<ArrCenter.length; i=i+2) {
   ctx.drawImage(Ugo, ArrCenter[i], ArrCenter[i+1] );
}