First of all, Gornova81, I've made a sound/music enable/disable feature... and fixed some other 'invisible to the user' stuff, so today I am going to make a release.
skafoelix,
Glad to hear you liked and you are interested in the path creation. We have a little process to create the path. First of all, the path is a SVG path, created using Gimp (we used Inkscape first, but it is easy to make the level and create the path in the same application).
After we created the svg, we load it on the game using a tool named
SVG salamander, which lets us to create a awt Shape based on that SVG. With the awt Shape, we can create a discrete version of the shape using a awt PathIterator we get from the Shape to get a list of points (you can decide how many points you want by specifying the flatness parameter)
In some ugly code, it looks like:
Code:
ArrayList<Vector2f> points = new ArrayList<Vector2f>();
ClassLoader classLoader = SlickSvgUtils.class.getClassLoader();
URI fileUri = classLoader.getResource(file).toURI();
SVGDiagram diagram = SVGCache.getSVGUniverse().getDiagram(fileUri);
SVGElement element = diagram.getElement(pathName);
List vector = element.getPath(null);
com.kitfox.svg.Path pathSVG = (com.kitfox.svg.Path) vector.get(1);
Shape shape = pathSVG.getShape();
PathIterator pathIterator = shape.getPathIterator(null, 0.001d);
float[] coords = new float[2];
while (!pathIterator.isDone()) {
pathIterator.currentSegment(coords);
points.add(new Vector2f(coords[0], coords[1]));
pathIterator.next();
}
After that, we use a custom class to "traverse" through the path (a list of points) in an easy way, this class let us go forward or backward, calculate distance from the origin, etc.
We had two choices about using only points (discrete version of the path which was a curve in first instance) or to use Bézier curves inside the game, we tried the first one and ran so smoothly that we didn't try the second one. One thing to notice when using points are the closed corners, the balls do a quick change of angle, but we can live with that for now.
Hope this can be of help, I can send you this traversal class if you want.
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