first sdl program
window creation moved in a function
sky and clouds added
function renamed
some constants defined
clouds created in a separate function
the clouds position are now floats
clouds animated in the main loop -- EVENT MANAGEMENT TO SEE
Makefile added
width and height set in the clouds
window width and height stored in constants
clouds visual speed depends on their distance from the camera
if the cloud is outside of the screen display it on the other side, to have "infinite" like clouds
event handled without blocking the execution
free the resources
declaration moved
ground added
functions signatures changed
player added in the world
variable renamed