Reorganize repo and add readme.

src/main.lua

@@ -0,0 +1,96 @@
+import "CoreLibs/object"
+import "CoreLibs/graphics"
+import "CoreLibs/sprites"
+import "CoreLibs/timer"
+import "CoreLibs/crank"
+
+import "pixie"
+import "ball"
+
+local gfx <const> = playdate.graphics
+
+local paddle = nil
+local boundary = nil
+local ball = nil
+
+local ballVector = {}
+local ballSpeed = 3
+
+local gameOver = false
+local gameOverText <const> = "Game Over!\nPress 'A' to play again."
+
+function setup()
+   levelTimer()
+   
+   paddle = Pixie(6, 80, gfx.kColorWhite, 5, 120)
+   paddle:add()
+   boundary = Pixie(2, 240, gfx.kColorClear)
+   boundary:add()
+   ball = Ball(6, 6, gfx.kColorWhite, 200, 120)
+   ball:add()
+   
+   local backgroundImage = gfx.image.new(400, 240, gfx.kColorBlack)
+   gfx.sprite.setBackgroundDrawingCallback(
+      function(x, y, width, height)
+         backgroundImage:draw(0, 0)
+         if gameOver then
+            gfx.setColor(gfx.kColorWhite)
+            gfx.fillRect(0, 80, 400, 80)
+            local level = ball.speed - 2
+            playdate.graphics.drawTextAligned("Game Over!\nYou reached level " ..
+                                              level ..
+                                              "\nPress 'A' to play again.", 200, 90, kTextAlignment.center)
+         end
+      end
+   )
+end
+
+function levelTimer() 
+   playdate.timer.new(10000,
+      function()
+         ball:levelUp()
+         levelTimer()
+      end
+   )
+end
+
+function playdate.update()
+   gfx.clear()
+   if gameOver then
+      if playdate.buttonJustPressed(playdate.kButtonA) then
+         paddle:remove()
+         boundary:remove()
+         ball:remove()
+         playdate.file.run("main.pdz")
+      end
+   else
+      -- Check collisions
+      local collisions = ball:overlappingSprites()
+      for i = 1, #collisions do
+         local collision = collisions[i]
+         if collision == paddle then
+            redirectBall()
+         end
+         if collision == boundary then
+            gameOver = true
+         end
+      end
+
+      -- Handle movement
+      movePaddle(playdate.getCrankTicks(80))
+      ball:move()
+      playdate.timer.updateTimers()
+   end
+   gfx.sprite.update()
+end
+
+function redirectBall()
+   ball:setDirection(1)
+end
+
+function movePaddle(ticks)
+   if ticks == 0 then return end
+   paddle:moveBy(0, ticks*-5)
+end
+
+setup()