I'm surprised no one mentioned this but your algorithm is whack. you need to give the diagonal movements a higher movement cost.
if(newX == newY){ gNew = node.gCost + 1.414; } else { gNew = node.gCost + 1.0; }
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I'm surprised no one mentioned this but your algorithm is whack. you need to give the diagonal movements a higher movement cost.
if(newX == newY){
gNew = node.gCost + 1.414;
} else {
gNew = node.gCost + 1.0;
}