78 lines
2.0 KiB
Lua
78 lines
2.0 KiB
Lua
local MAX_SECONDS = 60 * 60 * 12
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local Hand = {}
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Hand.__index = Hand
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function Hand:new(length, color, sec_per_turn, ticks_per_turn)
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local h = {
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length = (length or 10),
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color = (color or {1,1,1}),
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sec_per_turn = (sec_per_turn or 1),
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ticks_per_turn = ticks_per_turn
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}
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return setmetatable(h, self)
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end
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function Hand:draw(sec_elapsed)
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local turns = sec_elapsed / self.sec_per_turn
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if self.ticks_per_turn then
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turns = math.floor(turns * self.ticks_per_turn) / self.ticks_per_turn
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end
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love.graphics.push("all")
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love.graphics.setColor(unpack(self.color))
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love.graphics.rotate(2 * math.pi * turns)
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love.graphics.rectangle("fill", -10, 10, 20, -self.length)
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love.graphics.pop()
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end
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local clock = {rawseconds = 0, speedup = 120}
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function clock:advance(dt)
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self.rawseconds = self.rawseconds + dt * self.speedup
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if self.rawseconds >= MAX_SECONDS then
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self.rawseconds = self.rawseconds - MAX_SECONDS
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end
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end
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function clock:getHour()
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local h = math.floor(self.rawseconds / 60 / 60 % 12)
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if h == 0 then
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h = 12
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end
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return h
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end
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function clock:getMinute()
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return math.floor(self.rawseconds / 60 % 60)
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end
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function clock:getSecond()
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return math.floor(self.rawseconds % 60)
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end
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function clock:fmt()
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return string.format("%2d:%02d:%02d", self:getHour(), self:getMinute(), self:getSecond())
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end
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local secondhand = Hand:new(300, {0.5,0.5,0}, 60, 60)
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local minutehand = Hand:new(240, {1,0,0}, 60*60)
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local hourhand = Hand:new(180, {0,0.5,0.5}, 60*60*12)
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function love.load()
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love.graphics.setBackgroundColor(0,0,0)
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end
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function love.update(dt)
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clock:advance(dt)
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end
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function love.draw()
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love.graphics.print(clock:fmt())
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love.graphics.print(math.floor(clock.rawseconds), 10, 50)
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love.graphics.translate(love.graphics.getWidth()/2, love.graphics.getHeight()/2)
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secondhand:draw(clock.rawseconds)
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minutehand:draw(clock.rawseconds)
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hourhand:draw(clock.rawseconds)
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end
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