<------ Create the player, move the player, shoot and health ---------->
<--------- Background and Camera -------->
Part 1 create player
Part 2 move player
Part 3 shoot and health
Part 4 add background
Part 5 move player, bg, camera
<------------------------------------------------- Enemies -------------------------------------------------------->
Part 6 create enemies
Part 7 shooting enemies
Part 8 damaging the player
Part 9 restart game
<----------------------------- Enemy Mechanics ------------------------------>
<----------------------------------- Meteors ----------------------------------->
Part 10 enemy bullet
Part 11 fire a bullet
Part 12 getting damaged
Part 13 add meteors
Part 14 code meteors
<----------------------------- Powerups ------------------------------>
<--------------------------------- User Interface (UI) ------------------------------>
Part 15 add poweruphealth & shield
Part 16 code poweruphealth
Part 17 code powerup_shield
Part 18 Health & Score Text
Part 19 update text value
<----Sound Effects & Music---->
<---------------------------------Visual Effects----------------------------->
<----------------------Levels---------------------->
#20 sound effects
#21 player blink
#22 explosion objects
#23 create explosion
L.24 add finish line
L.25 external layout
<------Levels----->
<-----------------------------------------------------Main Menu & The End------------------------------------------------->
L.26 using external layout
L.27 main menu objects
#28 create main menu
#29 connect menu to scene