: Implementing a classic "whip" or projectile attack.
If your intent to "develop a feature" refers to modifying this game (ROM hacking) or creating a similar 2D platformer, you might consider these steps: : Implementing a classic "whip" or projectile attack
: Use tools like DS Lazy or Tinke to open the game's .nds file and look at the graphics/text files. : Implementing a classic "whip" or projectile attack