Large update with mostly rewritten character subsystem

proto2/tests/perceptron_test.gd

@@ -0,0 +1,34 @@
+extends MainLoop
+
+var pct
+var dataset
+
+func build_training_set():
+	var data = []
+	for k in range(400000):
+		var x = randf() * 2.0 - 1.0
+		var y = randf() * 2.0 - 1.0
+		var label = 0
+		if x > y:
+			label = 1
+		else:
+			label = -1
+		data.push_back([x, y, label])
+	return data
+
+func _initialize():
+	print("hello, world!")
+	pct = Perceptron.new()
+	dataset = build_training_set()
+	for i in range(dataset.size()):
+		var pt = dataset[i]
+		pct.train([pt[0], pt[1], 1.0], pt[2])
+	return 
+func _iteration(delta):
+	if dataset.size() == 0:
+		return true
+	var pt = dataset.pop_front()
+	var output = pct.guess([pt[0], pt[1], 1.0])
+	print(output, " / ", pt[2] - output)
+	return false
+