added Structure Printer helper

src/lib/turtle/Printer.hx

@@ -0,0 +1,67 @@
+package lib.turtle;
+
+import lib.turtle.Structure.Layer;
+import kernel.turtle.Turtle;
+
+class Printer {
+	var structure:Structure;
+
+	public function new(s:Structure) {
+		structure = s;
+	}
+
+	private function printRow(layer:Layer, x:Int, inverse:Bool) {
+		for (y in 0...layer.height()) {
+			var trueY = inverse ? ((layer.height() - 1) - y) : y;
+			var place = layer.get(x, trueY);
+
+			if (place) {
+				Turtle.place(Down);
+			}
+
+			if (y != layer.height() - 1) {
+				Turtle.forward();
+			}
+		}
+	}
+
+	private function printLayer(layer:Layer, inverse:Bool) {
+		for (x in 0...layer.width()) {
+			var trueX = inverse ? ((layer.width() - 1) - x) : x;
+			printRow(layer, trueX, inverse);
+
+			if (x == layer.width() - 1) {
+				// Don't turn on the last row
+				continue;
+			}
+
+			// Turn left or right
+			if (x % 2 == (inverse ? 1 : 0)) {
+				Turtle.turnRight();
+				Turtle.forward();
+				Turtle.turnRight();
+			} else {
+				Turtle.turnLeft();
+				Turtle.forward();
+				Turtle.turnLeft();
+			}
+		}
+	}
+
+	public function execute() {
+		for (i in 0...structure.height()) {
+			var layer = structure.getLayer(i);
+			var inverse = i % 2 == 0;
+
+			printLayer(layer, inverse);
+
+			// Don't go up on the last layer
+			if (i != structure.height() - 1) {
+				Turtle.up();
+			}
+
+			Turtle.turnLeft();
+			Turtle.turnLeft();
+		}
+	}
+}

src/lib/turtle/Structure.hx

@@ -0,0 +1,25 @@
+package lib.turtle;
+
+abstract Structure(Array<Layer>) from Array<Layer> {
+	public inline function getLayer(i:Int):Layer {
+		return this[i];
+	}
+
+	public inline function height():Int {
+		return this.length;
+	}
+}
+
+abstract Layer(Array<Array<Bool>>) from Array<Array<Bool>> {
+	public inline function get(x:Int, y:Int):Bool {
+		return this[y][x];
+	}
+
+	public inline function width():Int {
+		return this[0].length;
+	}
+
+	public inline function height():Int {
+		return this.length;
+	}
+}