40 lines
875 B
Lua
40 lines
875 B
Lua
import "pixie"
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class("Ball").extends(Pixie)
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function Ball:init(width, height, color, x, y)
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Ball.super.init(self, width, height, color, x, y)
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-- trying to use a table / array for the direction vector doesn't work for bizarre reasons...
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-- it fails on the init() call at runtime.
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self.dirX = -1
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self.dirY = 1
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self.speed = 3
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return self
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end
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function Ball:levelUp()
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self.speed += 1
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end
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function Ball:move()
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self:moveBy(self.dirX * self.speed,
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self.dirY * self.speed)
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end
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function Ball:setDirection(x, y)
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x = x or self.dirX
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y = y or self.dirY
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self.dirX = x
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self.dirY = y
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end
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function Ball:_normalizePosition()
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local changeVector = Ball.super._normalizePosition(self)
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if changeVector[1] ~= 0 then
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self.dirX = changeVector[1]
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end
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if changeVector[2] ~= 0 then
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self.dirY = changeVector[2]
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end
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end
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