godel9 questions

godel9 answers

• Pointers behaviour in different datatype
• What is the Sprite Kit equivalent to a Box2D sensor body?
• Run SKActions sequence with different nodes
• How to stringify a string which contains a comma?
• Is there a way to detect collisions between 2 SKSpriteNodes but allow them to overlap
• How to set the background image for a SKScene?
• Use of logical || with constant operand
• ( ConformsToProtocol: && RespondsToSelector: ) vs just ( respondsToSelector: )
• Why is the coordinate system in sprite kit flipped and can I change that globally?
• alloc + init memory usage mechanism