/traderous

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Viewing changes to cursor.lua

  • Committer: Josh C
  • Date: 2013-05-09 00:35:25 UTC
  • Revision ID: josh@9ix.org-20130509003525-ad51iyqb2j9eg1wl
get lasers going the right way

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cursor.lua
 
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Cursor = Tile:extend {
 
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   image = 'data/cursor.png',
 
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   inTargetArea = function(self)
 
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                     -- TODO: memoize this per-tick
 
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                     local mouseAngle = math.atan2(
 
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                        love.mouse.getY() - the.app.height/2,
 
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                        love.mouse.getX() - the.app.width/2
 
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                     )
 
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                     local mouseVsShipAbs = math.abs(the.player.rotation - mouseAngle)
 
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                     local mouseVsShip = math.min(2*math.pi - mouseVsShipAbs,
 
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                                                  mouseVsShipAbs)
 
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                     return mouseVsShip < 0.75
 
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                  end,
 
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   onUpdate = function(self)
 
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                 if self:inTargetArea() then
 
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                    self.image = 'data/cursor-target.png'
 
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                 else
 
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                    self.image = 'data/cursor.png'
 
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                 end
 
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              end,
 
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   onEndFrame = function(self)
 
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                   self.x = love.mouse.getX() + 8 + the.player.x - the.app.width / 2
 
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                   self.y = love.mouse.getY() + 8 + the.player.y - the.app.height / 2
 
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                end
 
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}
 
 
b'\\ No newline at end of file'