How to insert the DropDash

   // Drop Dash //

    use_dropdash          = false;        // Whether or not the player can perform the homing attack.

    DropDashFlag    = 0;          // Used to change the animation.

    DropDashTimer   = 15;      // How long it takes to charge the drop dash.

    DropDashSpeed   = 0;       // How strong the drop dash is.

   if(action = ConActJump && animation != "jumping") 

     {animation = "jumping"};

       if(action = ConActJump && DropDashFlag = 2 && animation != "dropdash") 

     {animation = "dropdash"};

    if(action = ConActNormal && speed_y >= 0 && animation = "idle")

     {animation = "jumping"};

if action = ConActShield

{

sound_stop(snd_player_spin_charge);

};

                    if(ground == true && DropDashFlag == 2){

      sound_play(snd_player_spin_release);

         action        = ConActRoll;          

         DropDashFlag  = 0;

         DropDashTimer = 15;

         if((!key_left && !key_right) or (key_right && key_left)){

            speed_x        = animation_direction*DropDashSpeed;

         }else{

            if(key_left){

               speed_x  = -DropDashSpeed;

            }else{

               speed_x  = DropDashSpeed

            }

         }

         action        = ConActRoll;          

      }

    if(action == ConActJump){

       if(!ground == true && DropDashFlag == 0){       

               if(key_action_pressed){

                                              DropDashFlag = 1;

               }

         }

          if(!ground == true && DropDashFlag = 1){

               if(DropDashTimer != 0){

               DropDashTimer -= 1

               }

                if(DropDashTimer = 0){

                sound_stop(snd_player_spin_charge);

                sound_play(snd_player_spin_charge);

                  DropDashFlag  = 2;

                  DropDashSpeed = abs(speed_x)/2 + 8;

                  // Limit the Drop Dash Strength:

                     if(DropDashSpeed > 13){

                        DropDashSpeed = 13;

                     }           

               }      

         }

      }

      if(DropDashFlag != 0){

         if(!key_action){

            DropDashFlag  = 0;

            DropDashTimer = 15;

            DropDashSpeed = 0;

         }

      }

    //Abilities only for Sonic:    

    if(character = ConCharSonic){

        scr_player_action_dropdash()

    }