How do i get sprite width/height by name?

For example i have useless function (just for explaning question)

spriteDraw = function(sprite)
  w = sprtie.width      //Returns 0, but i need actual sprite width
  h = sprite.height     //Also returns 0
  screen.drawSprite(sprite, 0, 0, w, h)
end

draw = function()
  spriteDraw('somesprite')
end

Assuming sprite is a string with the name of the sprite you want to use:

spriteDraw = function(sprite)
  local s = sprites[sprite]
  local w = s.width      
  local h = s.height    
  screen.drawSprite(sprite, 0, 0, w, h)
end

draw = function()
  spriteDraw('icon')
end

Please consider that in latest version of drawSprite you can omit both width and height as parameter so you can just call screen.drawSprite("icon",0,0) to draw at its original size.

@HomineLudens, thanks, but this not work for me... I still get zeros...

As i write - current (here) function is useless in project, need only to explain question :3

I have function which should 'cut' sprite into 9 pieces only having left, right, top & bottom values...

So i need some value to be calculating in middle sections, like:

Example:

Sprite looks like this (| & - is shows divider of areas) and called sprite: ```

|.1|...2|..3| left area is 2x1, middle 4x1 and right is 3x1 (top = 1, left = 2, right = 3 and middle calculated from 9 - 2 - 3

|..|....|...| left is 2x2, middle (calculated) 4x2, right 3x2 |.4|...5|..6| height here is calculated from sprite.height - top - bottom

|..|....|...| left is 2x2, middle in 4x2 and right is 3x2 |.7|...8|..9|

Ist 9x5 sprite (dots as pixels, number also pixels showing area number) | & - is sprite and areas borders.

And i have this function (just to explain, not working one):

init = function() some('sprite', 2, 3, 1, 2) end

some = function (sprite, left, right, top, bottom) w = sprite.width h = sprite.height

//now assign arrays as [width, height] for pieces (9 pieces in total) left_top = [left, top] //Area 1 left_bottom = [left, bottom] //Area 7 right_top = [right, top] //Area 3 right_bottom = [right, bottom] //Area 9

//Here we cut left & right for width from sprite width to get middle parts width //and top & bottom from sprite height to get middle parts height

middle_width = w - left - right middle_height = h - top - bottom

left_border = [left, middle_height] //Area 4 right_border = [right, middle_height] //Area 6 top_border = [middle_width, top] //Area 2 bottom_border = [middle_width, bottom] //Area 8

middle = [middle_width, middle_height] //Area 5 end

After proper work we should get this values:

w = 9 h = 5 left_top = [2, 1] left_bottom = [2, 2] right_top = [3, 1] right_bottom = [3, 2]

middle_width = 4 middle_height = 2

left_border = [2, 2] right_border = [3, 2] top_border = [4, 1] bottom_border = [4, 2]

middle = [4, 2]

So i need to get actual sprite width & height.

I get why its returns zeros :)

My function (in project) gets sprite.0 as sprite parameter...

Just need to cut .0 (frame) from this and i get actual width & height :)

HomineLudens - thanks again, you help me :3 (and some other who will search this)