+ flashing badges and grades to song plates

scripts/common.lua

@@ -146,3 +146,11 @@ function GetDisplayDifficulty(jacketPath, difficulty)
 
   return difficulty+1
 end
+
+function split(s, delimiter)
+  result = {};
+  for match in (s..delimiter):gmatch("(.-)"..delimiter) do
+      table.insert(result, match);
+  end
+  return result;
+end

scripts/songselect/songwheel.lua

@@ -130,6 +130,12 @@ local transitionAfterscrollJacketBgAlpha = 0;
 local transitionLaserScale = 0;
 local transitionLaserY = 0;
 
+-- Flash transition (animation)
+-- Used for flashing the badges
+-- 0 = minimum brightness; 0.5 = maximum brightness; 1 = minimum brightness again
+local transitionFlashScale = 0;
+local transitionFlashAlpha = 1;
+
 local transitionLeaveReverse = false;
 local transitionLeaveScale = 0;
 local transitionLeaveOffsetY = 0;
@@ -318,17 +324,29 @@ function drawSong(song, y)
     if selectedSongDifficulty.topBadge then
         badgeImage = badgeImages[selectedSongDifficulty.topBadge+1];
     end
+    
+    local badgeAlpha = 1;
+    if (selectedSongDifficulty.topBadge >= 3) then
+        badgeAlpha = transitionFlashAlpha; -- If hard clear or above, flash the badge
+    end
+
     gfx.BeginPath()
-    gfx.ImageRect(songX+282, y+44, 79, 69, badgeImage, 1, 0)
+    gfx.ImageRect(songX+282, y+44, 79, 69, badgeImage, badgeAlpha, 0)
 
     -- Draw grade
     local gradeImage = gradeImages.none;
+    local gradeAlpha = 1;
+
     if bestScore then 
         gradeImage = getGradeImageForScore(bestScore.score)
+
+        if (bestScore.score >= gradeCutoffs.S) then
+            gradeAlpha = transitionFlashAlpha; -- If S, flash the badge
+        end
     end
 
     gfx.BeginPath();
-    gfx.ImageRect(songX+391, y+47, 60, 60, gradeImage, 1, 0);
+    gfx.ImageRect(songX+391, y+47, 60, 60, gradeImage, gradeAlpha, 0);
 
     -- Draw top 50 label if applicable
     if (top50diffs[selectedSongDifficulty.id]) then
@@ -609,6 +627,31 @@ function tickTransitions(deltaTime)
     transitionLaserY = desh - math.min(transitionLaserScale * 2 * desh, desh);
     
 
+    -- Flash transition
+    if transitionFlashScale < 1 then
+        local songBpm = 120;
+        if (songwheel.songs[selectedIndex]) then
+            songBpm = songwheel.songs[selectedIndex].bpm;
+
+            -- Is a variable BPM
+            if (type(songBpm) == "string") then
+                local s = split(songBpm, '-');
+                songBpm = tonumber(s[1]); -- Lowest bpm value
+            end
+        end
+
+        transitionFlashScale = transitionFlashScale + deltaTime / (60/songBpm) -- transition should last for that time in seconds
+    else
+        transitionFlashScale = 0
+    end
+
+    if transitionFlashScale < 0.5 then
+        transitionFlashAlpha = transitionFlashScale * 2;
+    else
+        transitionFlashAlpha = 1-((transitionFlashScale-0.5) * 2);
+    end
+    transitionFlashAlpha = 1+transitionFlashAlpha*0.5
+
     -- Leave transition
     if (transitionLeaveReverse) then
         if transitionLeaveScale > 0 then