TileMap/Class question

Greywine

o

SinisterSoft

o ?

totebo

o, o, o, Merry Christmas!

Tom2012

LOL

antix

o!

Greywine

Hi. Sorry about the post from Tuesday.

I'm back trying to get a simple roguelike game up and running. That is: a topdown, 2d scroller. I'm using TileMap to get the graphics on the screen. The problem is when I go to change a tile with setTile I get the following error:

classes/TileMap.lua:62: attempt to call method 'setTile' (a nil value)
stack traceback:
classes/TileMap.lua:62: in function 'changeTile'
main.lua:22: in main chunk

I'm not sure what that means. I've created a Sprite group that holds -- and successfully displays --all the TileMap layers I want in a variable called self.sWorldlayers in a class called WorldMap.

Here's the function that's the culprit:

function WorldMap:changeTile(layer, entry, x, y)
--this function changes the self.tWorldmap array entry and the tile in self.sWorldlayers
l = self.tWorldmap[layer]
l[mapindex(x, y)] = entry
local s = self.sWorldlayers:getChildAt(layer)
print(s)
s:setTile(x, y, entry, 1)
end

Maybe it's a class/instance thing? Or a parent/child thing? Or a Sprite/table thing? I admit I'm still fuzzy on some of these relationships.

Thanks.

SinisterSoft

it looks like setTile isn't something 's' has. So it must be that 's' isn't a tilemap.

Greywine

Hi SinisterSoft,

It looks like self.sWorldlayers isn't coming out of my WorldMap class. When I try to reference in other WorldMap functions, it doesn't work. Any idea why?

function WorldMap:init()
self.tWorldmap = {}
self.sWorldlayers = Sprite.new()

self.tWorldmap = loadfile("classes/TileSets.lua")()
local t = Tiles.new(self.tWorldmap[constants.LAYER_BG], "images/tileset-background-108px.png")
self.sWorldlayers:addChildAt(t, constants.LAYER_BG)
local t = Tiles.new(self.tWorldmap[constants.LAYER_MONSTERS], "images/tileset-monsters-108px.png")
self.sWorldlayers:addChildAt(t, constants.LAYER_MONSTERS)
self.sWorldlayers:setPosition(constants.OFFSET_X, constants.OFFSET_Y)

self:addChild(self.sWorldlayers)
end