ZENGINE: Create image auto screen centering during blitting
ZENGINE: Fix frame delay calculation being reversed. Also convert to int to ensure proper 0 clamping
ZENGINE: Add some comments concerning StateFlag::DO_ME_NOW
ZENGINE: Add debug statements for Puzzle checking
ZENGINE: Set the puzzle global variable after a Puzzle is completed
ZENGINE: Fix typo in Puzzle checking
ZENGINE: Add StateFlag handling to Puzzle checking
ZENGINE: Fix loop logic so videos can end
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#ZENG-1 Fixed