player.lua

   1 Player = {}
   2 Player.name = 'player'
   3 Player.color = {255, 0, 0}
   4 Player.width = 5
   5 Player.height = 5
   6 Player.acceleration = 100
   7 Player.position = {x=0, y=0}
   8 Player.vector = {x=0, y=0}
   9 Player.path = {}
  10
  11 function Player:new(o)
  12     o = o or {}
  13     setmetatable(o, self)
  14     self.__index = self
  15     o:recordPosition()
  16     return o
  17 end
  18
  19 function Player:drawPath()
  20     if #self.path >= 4 then
  21         love.graphics.setColor(self.color)
  22         love.graphics.line(self.path)
  23     end
  24 end
  25
  26 function Player:draw()
  27     love.graphics.setColor(self.color)
  28     love.graphics.rectangle('fill', self.position.x, self.position.y, self.width, self.height)
  29
  30     -- add current position
  31     self:recordPosition()
  32     self:drawPath()
  33     table.remove(self.path)
  34     table.remove(self.path)
  35 end
  36
  37 function Player:recordPosition()
  38     table.insert(self.path, self.position.x + self.width/2)
  39     table.insert(self.path, self.position.y + self.height/2)
  40 end
  41
  42 function Player:update(dt)
  43     if love.keyboard.isDown("w") then
  44         self.vector = {x=0, y=-self.acceleration}
  45         self:recordPosition()
  46     elseif love.keyboard.isDown("s") then
  47         self.vector = {x=0, y=self.acceleration}
  48         self:recordPosition()
  49     elseif love.keyboard.isDown("a") then
  50         self.vector = {x=-self.acceleration, y=0}
  51         self:recordPosition()
  52     elseif love.keyboard.isDown("d") then
  53         self.vector = {x=self.acceleration, y=0}
  54         self:recordPosition()
  55     end
  56
  57     self.position.x = self.position.x + self.vector.x * dt
  58     self.position.y = self.position.y + self.vector.y * dt
  59 end