How can I manipulate or access an object in a tiles layout?

helloworld2013d · May 6, 2015, 8:43pm

Hello.

After a week, I finally got a layout of tiles “diamond” shape.

like a checkerboard for chess but in an ISOMETRIC form

I use the newMask ( ) to stop touching the transparent corners

of my rectangle.

I use object.myID to make sure each tile has a different number

I use for i loop and for j loop so basically 2 functions make the entire

screen layout.

this is my entire code simple 8 diamonds…

local mask = graphics.newMask( "images/m1mask.png" ) local tiles = {} function createBoard1()&nbsp;&nbsp;&nbsp; &nbsp; &nbsp;&nbsp; for i = 1, 2 do&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; for j = 1, 2 do &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; local aTile = display.newImageRect(sceneGroup, "images/m1.png", 128, 64 ) &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; tiles[i] = aTile -- For efficient instead of multiple lookups. &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; aTile:setMask( mask ) &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; aTile.isHitTestMasked = true&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; aTile.x = 128\*(i-1)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; aTile.y = 64\*(j-1) &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; aTile.myID = (i-1) \* 2 + j -- not sure where your ids are coming from, so I did this &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; aTile.touch = onTouch &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; aTile:addEventListener( "touch" ) &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; end&nbsp;&nbsp; &nbsp; &nbsp;&nbsp; end end createBoard1() local tiles2 = {} function createBoard2()&nbsp;&nbsp;&nbsp; &nbsp; &nbsp;&nbsp; for i = 2, 4 do&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; for j = 2, 4 do &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; local bTile = display.newImageRect(sceneGroup, "images/m2.png", 128, 64 ) &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; tiles2[i] = bTile -- For efficient instead of multiple lookups. &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; bTile:setMask( mask ) &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; bTile.isHitTestMasked = true&nbsp;&nbsp;&nbsp; &nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; bTile.x = 128\*((i-1)-1.5)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; bTile.y = 64\*((j-1)-1.5) &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; bTile.myID = ((i-1)-1) \* 2 + j -- not sure where your ids are coming from, so I did this &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; bTile.touch = onTouch &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; bTile:addEventListener( "touch" ) &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; end&nbsp;&nbsp; &nbsp; &nbsp;&nbsp; end end createBoard2()

and I have the function to detect if it is 5 or 8 or 7

local function onTouch( self, event ) &nbsp;&nbsp;&nbsp; if( event.phase == "began" ) then &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; print("Touched: ", self.myID ) &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;if (self.myID) == 4 then &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;print("is 4") &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;elseif (self.myID) == 7 then &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;print("is 7") &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;end -- end of the if (self.myID) &nbsp;&nbsp;&nbsp; end &nbsp;&nbsp;&nbsp; return end

And it works great!

I can touch each tile and it has a unique number, 1 — 8

QUESTION —

when I touch 4 it prints … “is 4”

so I know that one “IS” 4

but how can I make 4.alpha = .5

or transition.to(4, { time=100…})

or 4.rotation = 45

like that…

I use the

bTile[4].alpha = .5 but is not working

also this

bTile.myID[4].alpha = .5 – Not working

I don’t know how to do this

Thanks for all your help

I think with this much I can make a wonderful educational game

thanks…

Vesselless · June 1, 2015, 8:12pm

Been a while since you posted this question but still.

I see that you are creating a variable btile to then insert into the table. I did this same thing in my current project and had problems. I dont remember what type of problems bc I fixed it by simply assigning the display object and all of its properties directly to the table[i][j].

One of these properties is the object name, which is (in my case) the type of block/tile it is when it is either generated or loaded from json files.

HOWEVER: A theory I have gained by reading your post is that you are, as I was, assigning a variable “btile” to the table… so maybe “table[3].btile.alpha” or “table[btile].alpha” would work? Idk pal best of luck though. My solution isn’t too efficient i suppose but i got me where I needed to go and I can come back to it if performance becomes a problem as my game continues to grow.

Vesselless · June 1, 2015, 8:12pm

Been a while since you posted this question but still.

I see that you are creating a variable btile to then insert into the table. I did this same thing in my current project and had problems. I dont remember what type of problems bc I fixed it by simply assigning the display object and all of its properties directly to the table[i][j].

One of these properties is the object name, which is (in my case) the type of block/tile it is when it is either generated or loaded from json files.

HOWEVER: A theory I have gained by reading your post is that you are, as I was, assigning a variable “btile” to the table… so maybe “table[3].btile.alpha” or “table[btile].alpha” would work? Idk pal best of luck though. My solution isn’t too efficient i suppose but i got me where I needed to go and I can come back to it if performance becomes a problem as my game continues to grow.