Onwall
 

I feel like an idiot but I just saw a post on why onwall would work and that made me think about somthing. Can someone explain to me how onwall works?

if (onwall(x,y)) {thestuffgoeshere;} So if the NPCs x and y coordinates are on a wall/tile that cannot be walked on...the things in the brackets occur.

Ok, the main thing i have a problem with is how would you get a whole area like that? Sorta make a block of the x and y. So say you wanted somthing to happen when a whole certain area was touched?

I dont understand...Are you looking for a certain area? Or are you just checking to see if a large chunk of land is onwall?

I suggest you use
!onwall(x,y) to do player onwall..
player onwall kinda bothers me to make and to explain..
I dont have any examples . i had some but i dont know where it ended up..
I suggest you make an array with like .25,.5,.75,1,1.25 and then just the values for the x,y . and theres a tutorial by Ace too that explains well which tiles Graal checks for the player..

say for mining or fishing u just want the weapon to fire on a certain block of area. Thats what I mean

if you just wnat like fishing in the water then you use board..
if you want mining but like on a npc u made then use triggeraction or callnpc+testnpc..

here is a code for board[] on water =)

NPC Code:

---

this.x=int(playerx+1.5+(vecx(playerdir)*3));

this.y=int(playery+2+(vecy(playerdir)*3));

this.canfish=board[this.x+(64*this.y)];

  if (this.canfish=322) { fish code here }

---

322 is the index of the water tile(the swimmable one)

Well for that you jus wanna use board[index] to tilecheck....someone check my figures on this cause I dont got my notes on hand, and I almost never use board...but it goes like this (I think)

board[x + y*64] = bx + by*16

x and y are is the loc you want to check, and bx and by are the x and y values of the tile it returns (on the tileboard on the bottom right of the level editor)...I forget the math too...but you can use a formula to pull bx and by out of the responce it gives you...
(someone post the math?)

Gah...or just do what liquidice said and add em up for when you check it =/ Course...if its water your checking..jus use onwater

yeah onwater is easier ..
but that u can use for other stuff