MSU's Individual Item Shop Script

[MasterSwordUltima]

So I'm sure this has been done before in various ways - this is just my method. There is definitely room for improvement, but I don't see anything listed here on AGN specifically, so here goes.

[UPDATE]: Added option for buying ammo types, which you can keep buying without leaving the screen.

 ffc script MSUShop {
  void run(int M_BUY, int I_ITEM, int I_COST, int M_BROKE, int M_SOLDOUT, int I_TYPE) {
// D0 - M_BUY = the message when you make the buy
// D1 - I_ITEM = the item number
// D2 - I_COST = the amount of rupees item costs
// D3 - M_BROKE = the message that plays if you haven't enough cash!    
// D4 - M_SOLDOUT = the message that plays if you already have that item
// D5 - I_TYPE = 0 for reg item, 1 for keys, 2 for arrows, 3 for bombs

	while(true) {
      while(Link->X < this->X - 8 || Link->X > this->X + 24 || Link->Y < this->Y || Link->Y > this->Y + 24 || 

Link->Dir != DIR_UP || !Link->InputA) {
        Waitframe();
      }      

	Link->InputA = false;
	

	if(Link->Item[I_ITEM] && I_TYPE == 0)
		{
		Screen->Rectangle(1, 26, 9, 232, 22, 0, 1, 0, 0, 0, 1, OP_OPAQUE);
		Screen->Message(M_SOLDOUT);
		}
		else if(Game->Counter[CR_RUPEES]<I_COST && !Link->Item[I_ITEM] == 1)	
		{
		Screen->Rectangle(1, 26, 9, 232, 22, 0, 1, 0, 0, 0, 1, OP_OPAQUE);
		Screen->Message(M_BROKE);		
		}
	else if(Game->Counter[CR_RUPEES]>=I_COST && (!Link->Item[I_ITEM] || I_TYPE != 0))
		{
		Screen->Rectangle(1, 26, 9, 232, 22, 0, 1, 0, 0, 0, 1, OP_OPAQUE);
		Screen->Message(M_BUY);
			if(I_TYPE != 0){
				if(I_TYPE == 1){Game->Counter[CR_KEYS]++;}
				if(I_TYPE == 2){Game->Counter[CR_ARROWS]++;}
				if(I_TYPE == 3){Game->Counter[CR_BOMBS]++;}
				   }
			else if(I_TYPE == 0){	
					Link->Item[I_ITEM] = true;
					this->Data = 0;
					}
		Game->PlaySound(20);
		Game->Counter[CR_RUPEES] = Game->Counter[CR_RUPEES] - I_COST;		
		}      	



      while(Link->X >= this->X - 8 && Link->X <= this->X + 24 && Link->Y >= this->Y && Link->Y <= this->Y + 24 && 

Link->Dir == DIR_UP) {
        Waitframe();
      }
      
      Screen->Message(0);	
      Link->InputA = true;
	}
	     
    
  }
}

As explained in the code itself;

D0 = the string that will show when you successfully buy the item
D1 = the item number itself
D2 = the cost of the item (in rupees)
D3 = the string that will show if you don't have enough rupees
D4 = the string that will show if you already have the item
D5 = determines if the item is an ammo type. 0 = regular item. 1 = keys. 2 = arrows. 3 = bombs. 4 = superbombs.

I've also used font SS3, with a Y axis of 4 for this to line up properly. I should probably add a sound in there, but haven't brushed up on the particulars of those variables. All feedback is welcome.