convexDecomposition failes from Tiled

[jaunusa]

I don't know if your are still working on this engine, I have found a small misbehavior in the createShape() method in NapePhysicsObject when you parse a polyline from a tiled file. You use Vec2.weak() to push the vertices, so they can only be passed once to a nape method. If the ValidationResult is CONCAVE, the vertices are already disposed and the convexDecomposition() method returns an empty GeomPolyList.

Fix suggenstion:

var geomPoly:GeomPoly = new GeomPoly(verts);
var polygon:Polygon = new Polygon(geomPoly, _material);
var validation:ValidationResult = polygon.validity();

if (validation == ValidationResult.VALID)
    _shape = polygon;

else if (validation == ValidationResult.CONCAVE) {

    var convex:GeomPolyList = geomPoly.convexDecomposition();
    convex.foreach(function(p:GeomPoly):void {
        _body.shapes.add(new Polygon(p));
    });

    return;

} else
    throw new Error("Invalid polygon/polyline");

[alamboley]

Hey, thanks for the bug fix !