- Comments, module check

Author: SteveClement

helloWorld.py

@@ -1,18 +1,36 @@
 #!/usr/bin/env python3
 
-import cocos
+# try to import the cocos module
+try:
+	import cocos
+except:
+	print('Cannot import cocos. Did you run \'pip install cocos2d\' ?')
 
+# define a simple HelloWorld() class that inherits from cocos.layer.Layer (making it a sub-class of it)
 class HelloWorld(cocos.layer.Layer):
+	# __init__ is run every time you instantiate the class
 	def __init__(self):
+		# Always call super in the constructor
 		super(HelloWorld, self).__init__()
+		# label will become an object with all the necessary to display a text, with font TimesNewRoman and it will be center-anchored
+		# Note: .Label is a subclass of CocosNode
 		label = cocos.text.Label('Hello, world', font_name='Times New Roman', font_size=32, anchor_x='center', anchor_y='center')
-		label.position = 320, 240
+		# set the position of our text to x:320 y:240
+		label.position = (320, 240)
+		# add our label as a child. It is a CocosNode object, which know how to render themselves. 
 		self.add(label)
 
+# our main funciton
 def main():
+	# We initialize the director, that takes care of our main window
 	cocos.director.director.init()
+	# We instantiate hello_layer with our HelloWorld() class
 	hello_layer = HelloWorld()
+	# Now we create a .Scene and pass our HelloWorld() object stored in hello_layer, as a child
 	main_scene = cocos.scene.Scene(hello_layer)
+	# All setup now. Let's run our main_scene
 	cocos.director.director.run(main_scene)
+	# The above could have been compacted to:
+	# cocos.director.director.run(cocos.scene.Scene(HelloWorld()))
 
 if __name__ == '__main__': main()