TexturePack & textures

Scouser

OK I hit a small problem. I wanted to put all of my images inside one TexturePack, including a BMFont image, but BMFont only worked with filenames.

I have made a couple of minor changes to BMFont.lua so now you can place your font into a texture with all of your other graphics to cut down on the number graphics switches OpenGL uses. It is accessed like so:

local theTexture = TexturePack.new("menu-textures.txt","menu-textures.png") local fontx, fonty = theTexture:getLocation("test_24_0.png") local font = BMFont.new("test_24.fnt",{texture=theTexture,xo=fontx,yo=fonty})

Hopefully this may increase the framerates I am getting. The changes are listed below:

--[[ Normal use as before ------------------------- BMFont:init("fontfile", "imagefile", filtering) -------------------------   Modified use to enable font to be part of a larger texture filtering should be applied when texture is loaded elsewhere ------------------------- xoffset, yoffset= theTexture:getLocation("test_24_0.png") BMFont:init("fontfile", {texture=theTexture, xo=xoffset, yo=yoffset}) ------------------------- ]] function BMFont:init(fontfile, imagefile, filtering) if type(imagefile) == "string" then -- load font texture self.texture = Texture.new(imagefile, filtering) self.xoffset = 0 self.yoffset = 0 else -- Texture is passed as part of a table self.texture = imagefile.texture self.xoffset = imagefile.xo self.yoffset = imagefile.yo end   -- read glyphs from font.txt and store them in chars table self.chars = {} file = io.open(fontfile, "rt") for line in file:lines() do if startsWith(line, "char ") then local char = lineToTable(line) self.chars[char.id] = char end end io.close(file) end

and

function BMTextField:createCharacters() -- remove all children for i=self:getNumChildren(),1,-1 do self:removeChildAt(i) end   -- create a TextureRegion from each character and add them as a Bitmap local x = 0 local y = 0 for i=1,#self.str do local char = self.font.chars[self.str:byte(i)] if char ~= nil then -- Changed to add font texture offset to character offsets local region = TextureRegion.new(self.font.texture, char.x+self.font.xoffset, char.y+self.font.yoffset, char.width, char.height) local bitmap = Bitmap.new(region) bitmap:setPosition(x + char.xoffset, y + char.yoffset) self:addChild(bitmap) x = x + char.xadvance end end self.lineWidth = x end

Hope some of you find this useful.

Teranth

@Scouser that's actually a pretty cool change, I hadn't seen this post somehow until now. Thanks for the code

Magnusviri

I need this as well. Thanks