added viz for day2

day2.p8

@@ -105,6 +105,9 @@ local input = split(
   Game 100:7 blue,6 red,5 green;3 blue,13 green,11 red;6 red,13 green,14 blue;8 red,10 blue,15 green]], "\n"
 )
 
+-- viz
+local flakes = {}
+
 --strdsum
 --v0.1
 --@shiftalow / bitchunk
@@ -124,6 +127,7 @@ local maxblue = 14
 local sum = 0
 local sumpower = "0"
 
+local iter = cocreate(function()
   for i, game in ipairs(input) do
     local ok = true
     local minred = 0
@@ -131,12 +135,13 @@ for i, game in ipairs(input) do
     local minblue = 0
 
     local data = split(game, ":")[2]
-  printh(" ")
+    -- printh(" ")
-  printh("GAME " .. i)
+    -- printh("GAME " .. i)
-  printh(data)
+    -- printh(data)
 
     local hands = split(data, ";")
     for hand in all(hands) do
+      yield()
       local grouped = split(hand, ",")
       local red = 0
       local green = 0
@@ -152,18 +157,50 @@ for i, game in ipairs(input) do
         if green > mingreen then mingreen = green end
         if blue > minblue then minblue = blue end
       end
-    printh("red: " .. red .. ", green: " .. green .. ", blue: " .. blue)
+      -- printh("red: " .. red .. ", green: " .. green .. ", blue: " .. blue)
       if red > maxred or green > maxgreen or blue > maxblue then
         ok = false
       end
     end
+    -- viz
+    for i = 1, minred do
+      add(flakes, { rnd(128) \ 1, -rnd(20) \ 1, 8 })
+    end
+    for i = 1, mingreen do
+      add(flakes, { rnd(128) \ 1, -rnd(20) \ 1, 11 })
+    end
+    for i = 1, minblue do
+      add(flakes, { rnd(128) \ 1, -rnd(20) \ 1, 12 })
+    end
+
     sumpower = strdsum(sumpower, tostr(minred * mingreen * minblue))
     if ok then
-    printh("OK") sum += i
+      sum += i
     end
   end
   printh("sum: " .. sum)
   printh("powers: " .. sumpower)
+end)
+
+function _update()
+  coresume(iter)
+  local todel = {}
+  for i, flake in ipairs(flakes) do
+    local x = flake[1] + sin(t() / 5 + i / 20) / 2
+    local y = flake[2] + 1
+    if pget(x, y) == 0 and y < 128 then
+      flake[1] = x
+      flake[2] = y
+    end
+  end
+end
+
+function _draw()
+  cls()
+  for flake in all(flakes) do
+    pset(flake[1], flake[2], flake[3])
+  end
+end
 
 __gfx__
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