holy shit it works perfect

lib/classes/Slider.lua

@@ -8,9 +8,9 @@ local Slider = UIButton:subclass("Slider")
 function Slider:init()
     self.super:init()
 
-    self.valueRange = {2, 32}
-    self.valueIncrement = 2
-    self.defaultValue = 50
+    self.valueRange = {-50, 50}
+    self.valueIncrement = 5
+    self.defaultValue = 0
     self.value = self.defaultValue
     self.smooth = true
     self.orientation = "vertical"
@@ -18,20 +18,20 @@ function Slider:init()
     self.valueChange = Event:new()
 
     self.valuePercent = 0
-
     self.scrubDrawPosition = 0
 
     self.scrubXSize = 20
     self.scrubColor = Color:new(0.5, 0.5, 0.5)
+    
 end
 
-function Slider:doMouseActionCalculations()
+function Slider:doMouseMoveCalculations()
 
     -- how much length the slider can actually work with
     local effectiveSize = self:getAbsoluteSize().x-self.scrubXSize
 
     -- where the mouse is, inside of the slider
-    local mousePosition = (love.mouse.getX() - self:getAbsolutePosition().x)
+    local mousePosition = math.floor(love.mouse.getX() - self:getAbsolutePosition().x)
 
     -- so that the scrub is put in the middle of the mouse
     local scrubPos = mousePosition-(self.scrubXSize/2)
@@ -39,44 +39,39 @@ function Slider:doMouseActionCalculations()
     -- clamp the value so it never leaves the slider
     local positionClamped = JUtils.ClampNumber(scrubPos, 0, effectiveSize)
 
-    -- let's make a percentage value for where the slider should be placed
-    local floatPos = (positionClamped / effectiveSize)
+    local percent = (positionClamped/effectiveSize)
 
-    -- now let's calculate where to draw the scrub
-    local drawPos = (positionClamped / self:getAbsoluteSize().x)
-
-    self.valuePercent = floatPos
-    self.scrubDrawPosition = drawPos
-end
-
-function Slider:lockValues()
     local range = self.valueRange[2]-self.valueRange[1]
 
-    local increments = range/self.valueIncrement
+    local val = JUtils.NearestMultiple(percent*range, self.valueIncrement)--+self.valueRange[1]
 
-    print(increments)
+   -- self.valuePercent = val/range
 
-    --self.valuePercent = math.floor(self.valuePercent*increments)/increments
-    --self.scrubDrawPosition = math.floor(self.scrubDrawPosition*increments)/increments
+    val = val + self.valueRange[1]
 
-    self.valuePercent = (math.floor((self.valuePercent*range)/self.valueIncrement)*self.valueIncrement)/range
-    self.scrubDrawPosition = (math.floor((self.scrubDrawPosition*range)/self.valueIncrement)*self.valueIncrement)/range
+    self.value = val
 
-    local thing = (self.valuePercent*range)+self.valueRange[1]
+    
 
-    print(thing)
+end
+
+function Slider:updateScrubPos()
+    local range = self.valueRange[2]-self.valueRange[1]
+    self.valuePercent = (self.value-self.valueRange[1])/range
+    self.scrubDrawPosition = (self.valuePercent*(self:getAbsoluteSize().x-self.scrubXSize))/self:getAbsoluteSize().x
 end
 
 function Slider:update(delta)
     self.super:update(delta)
 
+    if self.parent then
+        self:updateScrubPos()
+    end
+    
 
     if self.mouseDown then
-        self:doMouseActionCalculations()
+        self:doMouseMoveCalculations()
 
-        self:lockValues()
-
-        --print(self.scrubDrawPosition, self.valuePercent)
     end
 
 end
@@ -88,7 +83,7 @@ function Slider:render()
     -- render the thing object idk
 
     love.graphics.setColor(self.scrubColor:out())
-    love.graphics.rectangle("fill", self:getAbsolutePosition().x+(self.getAbsoluteSize().x*self.scrubDrawPosition), self.getAbsolutePosition().y, self.scrubXSize+1, self.getAbsoluteSize().y)
+    love.graphics.rectangle("fill", self:getAbsolutePosition().x+(self.getAbsoluteSize().x*self.scrubDrawPosition), self.getAbsolutePosition().y, self.scrubXSize, self.getAbsoluteSize().y)
 
     self:renderChildren()
 end

lib/utils/JUtils.lua

@@ -1,6 +1,11 @@
 local function round(number, decimalPlaces)
+    decimalPlaces = decimalPlaces or 0
     local placer = 10^(-decimalPlaces)
-    return (math.floor(number)/placer)*placer
+    return (math.floor(number/placer + .5))*placer
+end
+
+local function multiple(number, m)
+    return round(number/m)*m
 end
 
 local function clamp(number, min, max)
@@ -11,6 +16,7 @@ end
 
 
 return {
+    NearestMultiple = multiple,
     RoundNumber = round,
     ClampNumber = clamp,
 }