rail added
set postion of car
move length changed
last change of movelength
asdasd
temporarily completed BG
for UT
for UT2
moving duration fixed
hand merge
add sources and coin, car functino added

src : coin img, fire img
code : add coin, add car function
set label of coin score on GameScene
for car position
merge
setScale car sprite
set
car anchorPoint setting
set Position
merge for roadObserver
merge conflict correct