/spacey

To get this branch, use:
bzr branch http://9ix.org/bzr/spacey
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Cursor = Tile:extend {
   image = 'data/cursor.png',
   inTargetArea = function(self)
                     -- TODO: memoize this per-tick

                     local mouseAngle = math.atan2(
                        love.mouse.getY() - the.app.height/2,
                        love.mouse.getX() - the.app.width/2
                     )
                     local mouseVsShipAbs = math.abs(the.player.rotation - mouseAngle)
                     local mouseVsShip = math.min(2*math.pi - mouseVsShipAbs,
                                                  mouseVsShipAbs)

                     return mouseVsShip < 0.75
                  end,
   onUpdate = function(self)
                 if self:inTargetArea() then
                    self.image = 'data/cursor-target.png'
                 else
                    self.image = 'data/cursor.png'
                 end
              end,
   onEndFrame = function(self)
                   self.x = love.mouse.getX() + 8 + the.player.x - the.app.width / 2
                   self.y = love.mouse.getY() + 8 + the.player.y - the.app.height / 2
                end
}