add letter on scrollbar in SongWheel

README.md

@@ -10,6 +10,7 @@ Project Starter: GSK Bladez
 - Hoshikara
 - GSK Bladez
 - Local
+- Kuenaimaku
 
 ## Graphics
 - GSK Bladez

scripts/common/common.lua

@@ -17,6 +17,10 @@ local function splitString(inputstr, sep)
     return t
 end
 
+local function firstLetter(str)
+    return str:match("[%z\1-\127\194-\244][\128-\191]*")
+end
+
 local function filter(tableIn, predicate)
     local out = {}
     for _, val in ipairs(tableIn) do
@@ -30,5 +34,6 @@ end
 return {
     stopMusic = stopMusic,
     splitString = splitString,
-    filter = filter
+    filter = filter,
+    firstLetter = firstLetter
 }

scripts/songselect/songwheel.lua

@@ -750,6 +750,7 @@ end
 function drawScrollbar()
     if isFilterWheelActive or transitionLeaveScale ~= 0 then return end
 
+    -- Scrollbar Background
     gfx.BeginPath()
     local resize = 0.85;
     local lw, lh = gfx.ImageSize(scrollBarBackgroundImage);
@@ -759,6 +760,7 @@ function drawScrollbar()
     local backgroundYPos = desh/2 - lh/2
     gfx.ImageRect(xPos, backgroundYPos, lw, lh, scrollBarBackgroundImage, 1, 0)
 
+    -- Scrollbar Fill
     gfx.BeginPath()
     local sw, sh = gfx.ImageSize(scrollBarFillImage);
     local sw = sw * resize;
@@ -770,8 +772,19 @@ function drawScrollbar()
     local scrollStep = (maxScrollYPos - minScrollYPos) / (#songwheel.songs - 1);
     local scrollbarYOffset = (selectedIndex - 1) * scrollStep;
     local scrollbarYPos = minScrollYPos + scrollbarYOffset;
+    gfx.ImageRect(fillXPos, scrollbarYPos, sw, sh, scrollBarFillImage, 1, 0);
 
-    gfx.ImageRect(fillXPos, scrollbarYPos, sw, sh, scrollBarFillImage, 1, 0)
+    -- 1st letter of song title on scroll
+    local letter = string.upper(common.firstLetter(songwheel.songs[selectedIndex].title));
+    gfx.BeginPath()
+    gfx.FontSize(16)
+    gfx.LoadSkinFont('Digital-Serial-Bold.ttf')
+    gfx.Rect(fillXPos-18, scrollbarYPos - 5, 16, 16)
+    gfx.FillColor(0,0,0,170)
+    gfx.Fill()
+    gfx.FillColor(255,255,255)
+    gfx.TextAlign(gfx.TEXT_ALIGN_MIDDLE + gfx.TEXT_ALIGN_CENTER)
+    gfx.Text(letter, fillXPos-10, scrollbarYPos + 5);
     
 end