Upload New File

PongSource/src/Ball.lua

+Ball = Class{}
+
+function Ball:init(x, y, width, height)
+  self.x = x
+  self.y = y
+  self.width = width
+  self.height = height
+
+  self.dy = math.random(-50, 50)
+end
+
+function Ball:collides(box)
+  if self.x > box.x + box.width or self.x + self.width < box.x then
+    return false
+  end
+
+  if self.y > box.y + box.height or self.y + self.height < box.y then
+    return false
+  end
+
+  return true
+end
+
+function Ball:reset()
+  self.x = VIRTUAL_WIDTH / 2 - 2
+  self.y = VIRTUAL_HEIGHT / 2 - 2
+
+  self.dy = math.random(-50, 50) * 1.5
+end
+
+
+function Ball:update(dt)
+  -- ball hits upper or lower boundary, when bounce the ball
+  if self.y <= 0 then
+    self.dy = -self.dy
+    self.y = 0
+    gSounds['wall_hit']:play()
+  elseif self.y >= VIRTUAL_HEIGHT - 4 then
+    self.dy = -self.dy 
+    self.y = VIRTUAL_HEIGHT -4
+    gSounds['wall_hit']:play()
+  end
+
+  self.x = self.x + self.dx * dt * 1.3
+  self.y = self.y + self.dy * dt * 1.3
+end
+
+function Ball:render()
+  love.graphics.setColor({1, 1, 1, 1})
+  love.graphics.rectangle('fill', self.x, self.y, 4, 4) -- renders the ball
+end
\ No newline at end of file