fix missing import
only free texture if it exists
add missing import
clean up resources
Merge branch 'master' into develop
more helpful warning about missing sound file
fixed bugs in DefaultShot; minor refactor to DefaultShot to use MovingEntity movement; factored "delta" update() argument into MovingEntity movement
compile all files at once
properly fixed the way velocity is handled; added PlayerShip.boostAcceleration; factored time delta into PlayerShip.update() dynamics
Merge branch 'master' of github.com:ylegall/Dmise into develop
adds a background image