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-rw-r--r--not/Header.lua48
1 files changed, 48 insertions, 0 deletions
diff --git a/not/Header.lua b/not/Header.lua
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index 0000000..a563ab2
--- /dev/null
+++ b/not/Header.lua
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+--- `Header`
+-- Swinging title.
+Header = {
+ parent = --[[not.Menu]]nil,
+ x = 0,
+ y = 0,
+ text = "",
+ bounce = 2,
+}
+
+-- `Header` is a child of `Element`.
+require "not.Element"
+Header.__index = Header
+setmetatable(Header, Element)
+
+function Header:new (parent)
+ local o = setmetatable({}, self)
+ o.parent = parent
+ return o
+end
+
+function Header:setText (text)
+ self.text = text or ""
+ return self
+end
+
+function Header:getBounce (f)
+ local f = f or 1
+ return math.sin(self.bounce*f*math.pi)
+end
+
+-- LÖVE2D callbacks
+function Header:draw (scale)
+ local angle = self:getBounce(2)
+ local dy = self:getBounce()*4
+ local x,y = self:getPosition()
+ love.graphics.setColor(255,255,255,255)
+ love.graphics.setFont(Bold)
+ love.graphics.printf(string.upper(self.text),x*scale,(y+dy)*scale,400,"center",(angle*5)*math.pi/180,scale,scale,200,12)
+end
+function Header:update (dt)
+ self.bounce = self.bounce + dt*0.7
+ if self.bounce > Header.bounce then -- Header.bounce is initial
+ self.bounce = self.bounce - Header.bounce
+ end
+end
+
+return Header