Reorganized code and assets.

src/graphics/drawable.lua

@@ -0,0 +1,58 @@
+------------------------------------------------------------------------------
+-- Imports
+------------------------------------------------------------------------------
+
+local make_class = require 'src.utils.classes'
+local Asset      = require 'src.utils.asset'
+
+------------------------------------------------------------------------------
+-- Class definitions
+------------------------------------------------------------------------------
+
+local Drawable = make_class(Asset)
+
+
+------------------------------------------------------------------------------
+-- Class methods
+------------------------------------------------------------------------------
+
+function Drawable:_init()
+end
+
+
+function Drawable:update(_)
+end
+
+
+function Drawable:draw()
+end
+
+
+function Drawable:keypressed(_, _ , _)
+end
+
+
+function Drawable:textinput(_)
+end
+
+
+function Drawable:keyreleased(_, _)
+end
+
+
+function Drawable:mousemoved(_, _, _, _)
+end
+
+
+function Drawable:mousepressed(_, _, _)
+end
+
+
+function Drawable:mousereleased(_, _, _)
+end
+
+------------------------------------------------------------------------------
+-- Module return
+------------------------------------------------------------------------------
+
+return Drawable

src/graphics/fader.lua

@@ -0,0 +1,112 @@
+------------------------------------------------------------------------------
+-- Imports
+------------------------------------------------------------------------------
+
+local love       = require 'love'
+local make_class = require 'src.utils.classes'
+
+
+------------------------------------------------------------------------------
+-- Class definitions
+------------------------------------------------------------------------------
+
+local Fader = make_class()
+
+
+------------------------------------------------------------------------------
+-- Class methods
+------------------------------------------------------------------------------
+
+function Fader:_init()
+    self.t        = 0.0
+    self.step     = 0
+    self.done     = true
+    self.reverse  = false
+    self.callback = nil
+end
+
+
+function Fader:_reset()
+    self.t    = 0
+    self.step = 0
+    self.done = false
+end
+
+
+function Fader:fade_in(callback)
+    self:_reset()
+    self.reverse  = true
+    self.callback = callback
+end
+
+
+function Fader:fade_out(callback)
+    self:_reset()
+    self.reverse  = false
+    self.callback = callback
+end
+
+
+function Fader:update(dt)
+    -- While the fader is active.
+    if not self.done then
+        -- Update the internal timer.
+        self.t = self.t + dt
+
+        -- Advance the fade if enough time has passed.
+        if self.t >= 0.009 then
+            self.step = self.step + 1
+            self.t    = 0.0
+        end
+
+        -- Mark as done when all fade tiles have been shown/hidden.
+        if self.step > 175 then
+            self.done = true
+
+            -- Execute the callback if any.
+            if self.callback ~= nil then
+                self.callback()
+                self.callback = nil
+            end
+        end
+    end
+end
+
+
+function Fader:draw()
+    local c = 1
+
+    -- Set the render color to black.
+    love.graphics.setColor(0, 0, 0)
+
+    -- For every fader tile.
+    for i = 0, 16 do
+        for j = 0, 10 do
+            -- Check if this is a fade in or fade out.
+            if not self.reverse then
+                -- If it's a fade out then draw black tiles until c.
+                if c <= self.step then
+                    love.graphics.rectangle('fill', 20 * i, 20 * j, 20, 20)
+                end
+            else
+                -- If it's a fade in then draw black tiles with indices higher than c.
+                if c > self.step then
+                    love.graphics.rectangle('fill', 20 * i, 20 * j, 20, 20)
+                end
+            end
+
+            -- Advance to the next tile to show/hide.
+            c = c + 1
+        end
+    end
+
+    -- Reset the render color to white.
+    love.graphics.setColor()
+end
+
+
+------------------------------------------------------------------------------
+-- Module return
+------------------------------------------------------------------------------
+
+return Fader

src/graphics/sprite.lua

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+------------------------------------------------------------------------------
+-- Imports
+------------------------------------------------------------------------------
+
+local love       = require 'love'
+local make_class = require 'src.utils.classes'
+local Drawable   = require 'src.graphics.drawable'
+
+------------------------------------------------------------------------------
+-- Class definitions
+------------------------------------------------------------------------------
+
+local Sprite = make_class(Drawable)
+
+
+------------------------------------------------------------------------------
+-- Class methods
+------------------------------------------------------------------------------
+
+function Sprite:_init(sprite_name, x, y)
+    self.sprite_name = string.format('assets/%s', sprite_name)
+    self.x = (x ~= nil and x) or 0
+    self.y = (y ~= nil and y) or 0
+end
+
+
+function Sprite:load()
+    self.sprite = love.graphics.newImage(self.sprite_name)
+end
+
+
+function Sprite:draw()
+    if self.sprite ~= nil then
+        love.graphics.draw(self.sprite, self.x, self.y)
+    end
+end
+
+
+function Sprite:unload()
+    self.sprite = nil
+end
+
+
+------------------------------------------------------------------------------
+-- Module return
+------------------------------------------------------------------------------
+
+return Sprite