Indicate when ceiling will drop

main.lua

@@ -513,6 +513,7 @@ function love.update(dt)
           c = game.row_gap
         }
       end
+      game.ceiling_should_drop = false
 
       local matches = find_matches(movement_info.nearest_slot_index)
 
@@ -694,11 +695,38 @@ function love.draw(alpha)
     )
   end
 
+  -- draw ceiling drop indicator
+  love.graphics.setColor(0, 0, 0, 1)
+  for i = 1, game.ceiling_drops_after do
+    love.graphics.circle(
+      'line',
+      game.level_left + (i - 1) * 15 + 15,
+      game.level_bottom + 15,
+      6
+    )
+  end
+  love.graphics.setColor(1, 1, 1, 1)
+  local ceiling_progress = game.bubbles_launched % game.ceiling_drops_after
+  for i = 1, ceiling_progress do
+    love.graphics.circle(
+      'fill',
+      game.level_left + (i - 1) * 15 + 15,
+      game.level_bottom + 15,
+      5
+    )
+  end
+
   if game.game_over then
     love.graphics.setShader(game.shader)
   end
 
   -- draw stationary bubbles
+  local ceiling_drops_in = game.ceiling_drops_after - ceiling_progress
+  if ceiling_drops_in == 1 or game.ceiling_should_drop then
+    local dx = love.math.random(-1, 1)
+    local dy = love.math.random(-1, 1)
+    love.graphics.translate(dx, dy)
+  end
   love.graphics.setColor(1, 1, 1, 1)
   for i = 1, #game.bubble_slots do
     local slot = game.bubble_slots[i]
@@ -713,6 +741,7 @@ function love.draw(alpha)
       )
     end
   end
+  love.graphics.origin()
 
   -- draw launcher
   love.graphics.setColor(1, 1, 1, 1)