demos/shine_on/scripts/Sun.lua

   1 Sun = Object:new()
   2 Sun.type = "Sun"
   3 Sun.image, Sun.w, Sun.h = get_image("images/sun_base.png")
   4 Sun.image_o, Sun.w_o, Sun.h_o = get_image("images/sun_overlay.png")
   5 Sun.image_b = get_image("images/sunbeam.png")
   6
   7 Sun.x_offset = 64
   8 Sun.y_offset = 0
   9 Sun.x = 320
  10 Sun.y = 0
  11 Sun.rd = 0
  12 Sun.sp = 0
  13 Sun.heading = 0
  14 Sun.speed_mov = 8
  15 Sun.beam_time = 0
  16
  17 Sun.beam_on = false
  18
  19 function Sun:new(o)
  20   o = o or {}
  21   setmetatable(o, self)
  22   self.__index = self
  23   o.in_lerp = create_relative_lerp(20,0,255)
  24   o.out_lerp = create_relative_lerp(20,255,0)
  25   return o
  26 end
  27
  28 function Sun:draw()
  29         if self.beam_on == true then
  30                 display(self.image_b,self.x-32,self.y+64,0,1,1, self.b_alpha)
  31         end
  32
  33         Object.draw(self)
  34         display(self.image_o, self.x-self.x_offset, self.y-self.y_offset, 0, 1, 1, 255)
  35 end
  36
  37 function Sun:update(delta)
  38         if self.beam_on then
  39           self.beam_time = self.beam_time - 1
  40           if self.beam_time > 20 then
  41             self.b_alpha = self.in_lerp(1)
  42           else
  43             self.b_alpha = self.out_lerp(1)
  44           end
  45         end
  46
  47         if self.beam_on and self.beam_time <= 0 then self.beam_on = false beam_psys_o.on = false beam_psys_w.on = false end
  48         self.speed = (math.cos(math.rad(self.sp))*self.speed_mov)
  49
  50         Object.update(self,delta)
  51         Sun_psys.x = self.x
  52         Sun_psys.y = self.y + 16
  53         self.rotation = math.cos(math.rad(self.rd))*20
  54         self.rd = self.rd + 1.5
  55         self.sp = self.sp + 2.0
  56         if self.rd > 360 then self.rd = self.rd - 360 end
  57         if self.sp > 360 then self.sp = self.sp - 360 end
  58 end
  59
  60 function Sun:collide(ids, object)
  61
  62 end