initial commit: canny cat basic movement, bouncing, some gridmap tiles for levels

addons/godot_state_charts/utilities/ring_buffer.gd

@@ -0,0 +1,54 @@
+
+
+## The content of the ring buffer
+var _content:Array[String] = []
+
+## The current index in the ring buffer
+var _index = 0
+
+## The size of the ring buffer
+var _size = 0 
+
+## Whether the buffer is fully populated
+var _filled = false
+
+
+func _init(size:int = 300):
+	_size = size
+	_content.resize(size)
+	
+	
+## Sets the maximum number of lines to store. This clears the buffer.	
+func set_maximum_lines(lines:int):
+	_size = lines
+	_content.resize(lines)
+	clear()
+
+## Adds an item to the ring buffer
+func append(value:String):
+	_content[_index] = value
+	if _index + 1 < _size:
+		_index += 1
+	else:
+		_index = 0
+		_filled = true
+
+
+## Joins the items of the ring buffer into a big string
+func join():
+	var result = ""
+	if _filled:
+		# start by _index + 1, run to the end and then continue from the start
+		for i in range(_index, _size):
+			result += _content[i] 
+
+	# when not filled, just start at the beginning
+	for i in _index:
+		result += _content[i]
+		
+	return result
+
+		
+func clear():
+	_index = 0
+	_filled = false