game/gui: new progressbar system

imperium-porcorum.love/game/modules/gui/init.lua

@@ -1,5 +1,7 @@
 local gui = {}
 
+local ProgressBar = Object:extend()
+
 function gui.newBorder(id, width, height)
   local filename = "assets/sprites/gui/hborder.png"
   local texture = love.graphics.newImage(filename)
@@ -83,4 +85,66 @@ function gui.newTextBox(filename, width, height)
   return canvas
 end
 
+function gui.newProgressBar(sprite, outerfont, innerfont, label, width)
+  return ProgressBar(sprite, outerfont, innerfont, label, width)
+end
+
+function ProgressBar:new(sprite, outerfont, innerfont, label, width)
+  local filepath = "assets/gui/progressbar/"
+  self.image    = love.graphics.newImage(filepath .. sprite .. ".png")
+  local backimg = love.graphics.newImage(filepath .. "backbar.png")
+  self.quad     = {}
+  self.quad[1]  = love.graphics.newQuad(0, 0, 2, 12, 5, 12)
+  self.quad[2]  = love.graphics.newQuad(2, 0, 1, 12, 5, 12)
+  self.quad[3]  = love.graphics.newQuad(3, 0, 2, 12, 5, 12)
+
+  self.width = width
+
+  self.outerfont = outerfont
+  self.innerfont = innerfont
+
+  self.frontcanvas  = love.graphics.newCanvas(width, 12)
+  self.backcanvas   = love.graphics.newCanvas(ox + width, 12)
+
+  self.ox = self.outerfount:getWidth("label")
+
+  -- On commence par préparer le canvas avant, qui sera utilisé pour dessiner
+  -- la partie coloré de la barre de progres
+  love.graphics.setCanvas( self.frontcanvas )
+
+  for i=1, (width-4) do
+    if (i == 1) then
+      love.graphics.draw(self.image, self.quad[2], i + 1, 0)
+    end
+  end
+
+  love.graphics.draw(self.image, self.quad[1], 0, 0)
+  love.graphics.draw(self.image, self.quad[3], width - 2, 0)
+
+  -- On commence par préparer le fond de la barre
+  love.graphics.setCanvas( self.backcanvas )
+
+  for i=1, (width-4) do
+    if (i == 1) then
+      love.graphics.draw(backimg, self.quad[2], self.ox + i + 1, 0)
+    end
+  end
+
+  love.graphics.draw(backimg, self.quad[1], self.ox, 0)
+  love.graphics.draw(backimg, self.quad[3], self.ox + width - 2, 0)
+
+  self.outerfont:set()
+  love.graphics.printf(label, self.ox, 7, self.ox, "right")
+
+  love.graphics.setCanvas(  )
+
+end
+
+function ProgressBar:draw(x, y, stat, innerlabel)
+  love.graphics.draw(self.frontcanvas, x - self.ox, y)
+  love.graphics.setScissor(x, y, self.width * stat, 12)
+  love.graphics.draw(self.backcanvas, x - self.ox, y)
+  love.graphics.setScissor()
+end
+
 return gui