demos/shine_on/scripts/Player.lua

   1 require "scripts/TinyPhazon"
   2
   3 --default values
   4 Player = Object:new()
   5 Player.type = "Player"
   6
   7 Player.image_l, Player.w, Player.h = get_image("images/player_left.png")
   8 Player.image_r = get_image("images/player_right.png")
   9 Player.image_c = get_image("images/player_charged.png")
  10 Player.left = false
  11 Player.right = false
  12 Player.heading = 0
  13 Player.charges = 0
  14
  15 Player.psys = ParticleSystem:new()
  16 Player.psys.object = TinyPhazon
  17 Player.psys.angle_min = 45
  18 Player.psys.angle_max = 135
  19 Player.psys.speed_min = 4
  20 Player.psys.speed_max = 7
  21 Player.psys.particles_per_update_min = 5
  22 Player.psys.particles_per_update_max = 10
  23 Player.psys.life_min = 1
  24 Player.psys.life_max = 5
  25 Player.psys.on = false
  26
  27 function Player:new(o)
  28   o = o or {}
  29   setmetatable(o, self)
  30   self.__index = self
  31   o.lerp = create_absolute_lerp(20,20,8)
  32   return o
  33 end
  34
  35
  36 function Player:update(delta)
  37   if self.right == true and self.left == true then
  38         self.speed = 0
  39   elseif self.right == true then
  40         self.speed = 5
  41   elseif self.left == true then
  42         self.speed = -5
  43   else
  44         self.speed = 0
  45   end
  46
  47   Object.update(self, delta)
  48
  49   if self.x < 0 then self.x = 0 end
  50   if self.x > 640 - 32 then self.x = 640 - 32 end
  51
  52   if self.charges < 20 then
  53     self.psys.on = false
  54   else
  55     self.psys.on = true
  56   end
  57
  58   self.psys.x = self.x + 8
  59   self.psys.y = self.y
  60   self.psys:update()
  61
  62 end
  63
  64
  65 function Player:shoot()
  66         if self.charges >= 20 then
  67                 bullet_list:push_back(PhazonBlast:new({x=self.x, y=self.y, heading=90, speed=10}))
  68                 self.charges = self.charges - 20
  69         end
  70 end
  71
  72
  73 function Player:draw()
  74   self.psys:draw()
  75   if self.charges < 20 then
  76     local dist = self.lerp(self.charges)
  77
  78     display(self.image_l, self.x-self.x_offset-dist, self.y-self.y_offset, self.rotation, 1, 1, 255)
  79     display(self.image_r, self.x-self.x_offset+dist, self.y-self.y_offset, self.rotation, 1, 1, 255)
  80   else
  81     display(self.image_c, self.x-self.x_offset, self.y-self.y_offset, self.rotation, 1, 1, 255)
  82   end
  83 end