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fonts/font18.fnt

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fonts/font36.fnt

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fonts/font72.fnt

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+char id=50 x=106 y=220 width=47 height=64 xoffset=-3 yoffset=-1 xadvance=47 page=0 chnl=15
+char id=51 x=48 y=154 width=46 height=65 xoffset=-3 yoffset=-1 xadvance=47 page=0 chnl=15
+char id=52 x=154 y=220 width=51 height=64 xoffset=-5 yoffset=-1 xadvance=47 page=0 chnl=15
+char id=53 x=206 y=220 width=45 height=64 xoffset=-2 yoffset=0 xadvance=47 page=0 chnl=15
+char id=54 x=95 y=154 width=46 height=65 xoffset=-2 yoffset=-1 xadvance=47 page=0 chnl=15
+char id=55 x=415 y=220 width=47 height=63 xoffset=-3 yoffset=0 xadvance=47 page=0 chnl=15
+char id=56 x=142 y=154 width=47 height=65 xoffset=-3 yoffset=-1 xadvance=47 page=0 chnl=15
+char id=57 x=190 y=154 width=47 height=65 xoffset=-3 yoffset=-1 xadvance=47 page=0 chnl=15
+char id=58 x=498 y=154 width=21 height=52 xoffset=-1 yoffset=12 xadvance=25 page=0 chnl=15
+char id=59 x=490 y=286 width=24 height=61 xoffset=-4 yoffset=12 xadvance=25 page=0 chnl=15
+char id=61 x=278 y=414 width=45 height=31 xoffset=-2 yoffset=16 xadvance=47 page=0 chnl=15
+char id=63 x=0 y=220 width=42 height=65 xoffset=-6 yoffset=-1 xadvance=37 page=0 chnl=15
+char id=64 x=383 y=0 width=69 height=69 xoffset=-2 yoffset=0 xadvance=70 page=0 chnl=15
+char id=65 x=0 y=286 width=58 height=63 xoffset=-6 yoffset=0 xadvance=51 page=0 chnl=15
+char id=66 x=59 y=286 width=48 height=63 xoffset=1 yoffset=0 xadvance=52 page=0 chnl=15
+char id=67 x=259 y=154 width=52 height=65 xoffset=-2 yoffset=-1 xadvance=51 page=0 chnl=15
+char id=68 x=108 y=286 width=54 height=63 xoffset=1 yoffset=0 xadvance=58 page=0 chnl=15
+char id=69 x=163 y=286 width=41 height=63 xoffset=1 yoffset=0 xadvance=46 page=0 chnl=15
+char id=70 x=205 y=286 width=41 height=63 xoffset=1 yoffset=0 xadvance=43 page=0 chnl=15
+char id=71 x=312 y=154 width=55 height=65 xoffset=-2 yoffset=-1 xadvance=58 page=0 chnl=15
+char id=72 x=247 y=286 width=52 height=63 xoffset=1 yoffset=0 xadvance=59 page=0 chnl=15
+char id=73 x=300 y=286 width=31 height=63 xoffset=-3 yoffset=0 xadvance=30 page=0 chnl=15
+char id=74 x=49 y=0 width=32 height=77 xoffset=-12 yoffset=0 xadvance=25 page=0 chnl=15
+char id=75 x=332 y=286 width=50 height=63 xoffset=1 yoffset=0 xadvance=50 page=0 chnl=15
+char id=76 x=383 y=286 width=41 height=63 xoffset=1 yoffset=0 xadvance=43 page=0 chnl=15
+char id=77 x=425 y=286 width=64 height=63 xoffset=1 yoffset=0 xadvance=71 page=0 chnl=15
+char id=78 x=0 y=350 width=53 height=63 xoffset=1 yoffset=0 xadvance=60 page=0 chnl=15
+char id=79 x=368 y=154 width=60 height=65 xoffset=-2 yoffset=-1 xadvance=62 page=0 chnl=15
+char id=80 x=54 y=350 width=45 height=63 xoffset=1 yoffset=0 xadvance=49 page=0 chnl=15
+char id=81 x=82 y=0 width=60 height=76 xoffset=-2 yoffset=-1 xadvance=62 page=0 chnl=15
+char id=82 x=100 y=350 width=49 height=63 xoffset=1 yoffset=0 xadvance=50 page=0 chnl=15
+char id=83 x=429 y=154 width=46 height=65 xoffset=-3 yoffset=-1 xadvance=45 page=0 chnl=15
+char id=84 x=150 y=350 width=52 height=63 xoffset=-6 yoffset=0 xadvance=46 page=0 chnl=15
+char id=85 x=252 y=220 width=52 height=64 xoffset=0 yoffset=0 xadvance=58 page=0 chnl=15
+char id=86 x=463 y=220 width=56 height=63 xoffset=-6 yoffset=0 xadvance=49 page=0 chnl=15
+char id=87 x=441 y=85 width=77 height=63 xoffset=-5 yoffset=0 xadvance=72 page=0 chnl=15
+char id=88 x=203 y=350 width=54 height=63 xoffset=-6 yoffset=0 xadvance=48 page=0 chnl=15
+char id=89 x=258 y=350 width=53 height=63 xoffset=-6 yoffset=0 xadvance=46 page=0 chnl=15
+char id=90 x=312 y=350 width=49 height=63 xoffset=-4 yoffset=0 xadvance=47 page=0 chnl=15
+char id=91 x=276 y=0 width=29 height=75 xoffset=-1 yoffset=-1 xadvance=29 page=0 chnl=15
+char id=93 x=306 y=0 width=29 height=75 xoffset=-5 yoffset=-1 xadvance=29 page=0 chnl=15
+char id=94 x=228 y=414 width=49 height=45 xoffset=-4 yoffset=-1 xadvance=47 page=0 chnl=15
+char id=95 x=389 y=414 width=45 height=17 xoffset=-7 yoffset=57 xadvance=37 page=0 chnl=15
+char id=97 x=0 y=414 width=44 height=52 xoffset=-3 yoffset=12 xadvance=46 page=0 chnl=15
+char id=98 x=0 y=85 width=47 height=68 xoffset=0 yoffset=-4 xadvance=50 page=0 chnl=15
+char id=99 x=0 y=467 width=41 height=52 xoffset=-2 yoffset=12 xadvance=40 page=0 chnl=15
+char id=100 x=48 y=85 width=47 height=68 xoffset=-2 yoffset=-4 xadvance=50 page=0 chnl=15
+char id=101 x=45 y=414 width=45 height=52 xoffset=-2 yoffset=12 xadvance=46 page=0 chnl=15
+char id=102 x=240 y=85 width=39 height=67 xoffset=-5 yoffset=-4 xadvance=30 page=0 chnl=15
+char id=103 x=96 y=85 width=47 height=68 xoffset=-2 yoffset=12 xadvance=50 page=0 chnl=15
+char id=104 x=280 y=85 width=45 height=67 xoffset=0 yoffset=-4 xadvance=50 page=0 chnl=15
+char id=105 x=238 y=154 width=20 height=65 xoffset=-1 yoffset=-2 xadvance=24 page=0 chnl=15
+char id=106 x=19 y=0 width=29 height=82 xoffset=-10 yoffset=-2 xadvance=24 page=0 chnl=15
+char id=107 x=326 y=85 width=44 height=67 xoffset=0 yoffset=-4 xadvance=44 page=0 chnl=15
+char id=108 x=371 y=85 width=19 height=67 xoffset=0 yoffset=-4 xadvance=24 page=0 chnl=15
+char id=109 x=91 y=467 width=68 height=51 xoffset=0 yoffset=12 xadvance=73 page=0 chnl=15
+char id=110 x=160 y=467 width=45 height=51 xoffset=0 yoffset=12 xadvance=50 page=0 chnl=15
+char id=111 x=42 y=467 width=48 height=52 xoffset=-2 yoffset=12 xadvance=49 page=0 chnl=15
+char id=112 x=144 y=85 width=47 height=68 xoffset=0 yoffset=12 xadvance=50 page=0 chnl=15
+char id=113 x=192 y=85 width=47 height=68 xoffset=-2 yoffset=12 xadvance=50 page=0 chnl=15
+char id=114 x=206 y=467 width=35 height=51 xoffset=0 yoffset=12 xadvance=35 page=0 chnl=15
+char id=115 x=91 y=414 width=41 height=52 xoffset=-3 yoffset=12 xadvance=40 page=0 chnl=15
+char id=116 x=458 y=350 width=36 height=61 xoffset=-5 yoffset=3 xadvance=31 page=0 chnl=15
+char id=117 x=242 y=467 width=46 height=51 xoffset=-1 yoffset=13 xadvance=50 page=0 chnl=15
+char id=118 x=289 y=467 width=49 height=50 xoffset=-6 yoffset=13 xadvance=42 page=0 chnl=15
+char id=119 x=339 y=467 width=68 height=50 xoffset=-6 yoffset=13 xadvance=62 page=0 chnl=15
+char id=120 x=408 y=467 width=48 height=50 xoffset=-5 yoffset=13 xadvance=44 page=0 chnl=15
+char id=121 x=391 y=85 width=49 height=67 xoffset=-6 yoffset=13 xadvance=42 page=0 chnl=15
+char id=122 x=457 y=467 width=41 height=50 xoffset=-4 yoffset=13 xadvance=39 page=0 chnl=15
+char id=123 x=203 y=0 width=35 height=75 xoffset=-4 yoffset=-1 xadvance=33 page=0 chnl=15
+char id=124 x=0 y=0 width=18 height=84 xoffset=11 yoffset=-4 xadvance=45 page=0 chnl=15
+char id=125 x=239 y=0 width=36 height=75 xoffset=-4 yoffset=-1 xadvance=33 page=0 chnl=15
+char id=8470 x=305 y=220 width=76 height=64 xoffset=0 yoffset=-1 xadvance=79 page=0 chnl=15

main.lua

@@ -118,7 +118,7 @@ local function move_bubble(x, y, velocity_x, velocity_y)
   local should_stop = false
 
   -- collision with ceiling
-  if new_y - game.bubble_radius <= game.level_top then
+  if new_y - game.bubble_radius <= game.ceiling_bottom then
     should_stop = true
   end
 
@@ -177,13 +177,9 @@ local function move_bubble(x, y, velocity_x, velocity_y)
   }
 end
 
-local function generate_aim_guide(towards_x, towards_y)
+local function generate_aim_guide(angle)
-  -- TODO: don't allow aiming backwards
+  local velocity_x = math.cos(angle) * game.bubble_speed
-  local diff_x = towards_x - game.launcher_x
+  local velocity_y = math.sin(angle) * game.bubble_speed
-  local diff_y = towards_y - game.launcher_y
-  local dist = math.sqrt(diff_x * diff_x + diff_y * diff_y)
-  local velocity_x = diff_x / dist * game.bubble_speed
-  local velocity_y = diff_y / dist * game.bubble_speed
   local new_x = game.launcher_x
   local new_y = game.launcher_y
   local radius = 5
@@ -293,20 +289,104 @@ local function find_unattached_bubbles()
   return unattached
 end
 
-function love.load(arg)
+-- don't allow aiming backwards or straight sideways
+local function clamp_launcher_angle(angle)
+  if (angle >= 0 and angle <= tau / 4) or angle > tau * 25 / 26 then
+    angle = tau * 25 / 26
+  elseif angle > tau / 4 and angle < tau * 14 / 26 then
+    angle = tau * 14 / 26
+  end
+  return angle
+end
+
+local function start_level()
+  game.game_over = false
+  game.paused = false
+  game.fade_to_grey = {time = 0, duration = 120, progress = 0.0}
+  game.frame_by_frame = false
+  game.frame_counter = 0
+  game.timer = 0
+  game.score = 0
+  game.points_display = {}
+  game.bubbles_launched = 0
+  game.ceiling_drops_after = 5
+  game.ceiling_drop_tween = nil
+  game.ceiling_should_drop = false
+
+  game.bubble_slots = load_level(
+    game.levels[game.current_level], game.bubble_diameter, game.row_gap
+  )
+  local max_cols = math.max(
+    #game.levels[game.current_level][1],
+    #game.levels[game.current_level][2]
+  )
+  local num_rows = #game.levels[game.current_level]
+  game.level_width = max_cols * game.bubble_diameter
+  game.level_height = (num_rows - 1) * game.row_gap + game.bubble_diameter
+  game.level_left = (game.window_width - game.level_width) / 2
+  game.level_top = (
+    game.window_height - game.level_height -
+    game.bubble_diameter - game.bubble_radius
+  ) / 2
+  game.level_right = game.level_left + game.level_width
+  game.level_bottom = game.level_top + game.level_height
+  game.ceiling_bottom = game.level_top
+
+  for i = 1, #game.bubble_slots do
+    game.bubble_slots[i].x = game.bubble_slots[i].x + game.level_left
+    game.bubble_slots[i].y = game.bubble_slots[i].y + game.ceiling_bottom
+  end
+
+  game.launcher_x = game.window_width / 2
+  game.launcher_y = game.level_bottom + game.bubble_diameter
+  game.launcher_rotation = -tau / 4 -- up
+
+  local total_bubble_count, counts_by_type = get_bubble_counts()
+  local bubble_types = {}
+  for bubble_type, count in pairs(counts_by_type) do
+    if bubble_type >= 1 and bubble_type <= 8 then
+      bubble_types[#bubble_types+1] = bubble_type
+    end
+  end
+  game.current_bubble = {
+    x = game.launcher_x,
+    y = game.launcher_y,
+    bubble_type = get_next_bubble_type(1, bubble_types),
+    velocity_x = 0,
+    velocity_y = 0
+  }
+  game.next_bubble = {
+    x = game.launcher_x + game.bubble_diameter * 2,
+    y = game.launcher_y,
+    bubble_type = get_next_bubble_type(2, bubble_types),
+    scale = 1
+  }
+
+  game.show_aim_guide = true
+  game.aim_guide = {}
+  generate_aim_guide(game.launcher_rotation)
+
+  game.bursting_bubbles = {}
+  game.falling_bubbles = {}
+end
+
+function love.load(arg, unfiltered_arg)
   if arg[#arg] == "debug" then require("lldebugger").start() end
 
   game.window_width, game.window_height = love.graphics.getDimensions()
+  game.window_center_x = game.window_width / 2
+  game.window_center_y = game.window_height / 2
 
-  game.score_font = love.graphics.setNewFont(50)
+  game.bm_font72 = love.graphics.newFont('fonts/font72.fnt', 'fonts/font72.png')
-  game.points_font = love.graphics.newFont(30)
+  game.bm_font36 = love.graphics.newFont('fonts/font36.fnt', 'fonts/font36.png')
+  game.bm_font18 = love.graphics.newFont('fonts/font18.fnt', 'fonts/font18.png')
+  game.font36_widths = {}
 
-  game.paused = false
+  game.game_over_image = love.graphics.newImage('images/game_over.png')
-  game.frame_by_frame = false
 
   game.bubble_diameter = 60
   game.bubble_radius = game.bubble_diameter / 2
-  game.bubble_speed = 960 * delta_time -- 960 px/s
+  game.bubble_speed = 960 * delta_time -- 960 px/s = 8 px/frame
 
   -- vertical distance between bubble center points
   game.row_gap = math.ceil(math.sqrt(
@@ -328,9 +408,6 @@ function love.load(arg)
     love.graphics.newImage('images/white.png')   -- 8
   }
 
-  game.score = 0
-  game.points_display = {}
-
   game.levels = {}
   game.levels[1] = {
     {1,1,1,3,3,2,2,2},
@@ -350,59 +427,94 @@ function love.load(arg)
   }
   game.current_level = 1
 
-  game.bubble_slots = load_level(
-    game.levels[game.current_level], game.bubble_diameter, game.row_gap
-  )
-  local max_cols = math.max(
-    #game.levels[game.current_level][1],
-    #game.levels[game.current_level][2]
-  )
-  local num_rows = #game.levels[game.current_level]
-  game.level_width = max_cols * game.bubble_diameter
-  game.level_height = (num_rows - 1) * game.row_gap + game.bubble_diameter
-  game.level_left = (game.window_width - game.level_width) / 2
-  game.level_top = game.bubble_radius
-  game.level_right = game.level_left + game.level_width
-  game.level_bottom = game.level_top + game.level_height
-
-  for i = 1, #game.bubble_slots do
-    game.bubble_slots[i].x = game.bubble_slots[i].x + game.level_left
-    game.bubble_slots[i].y = game.bubble_slots[i].y + game.level_top
-  end
-
   game.launcher_image = love.graphics.newImage('images/launcher.png')
   game.launcher_height = game.launcher_image:getHeight()
   game.launcher_width = game.launcher_image:getWidth()
-  game.launcher_x = game.window_width / 2
-  game.launcher_y = game.level_top + game.level_height + game.bubble_diameter
   game.launcher_offset_x = 90 -- rotation point in launcher image
   game.launcher_offset_y = game.launcher_height / 2
-  game.launcher_rotation = -tau / 4 -- up
 
-  game.show_aim_guide = true
-  game.aim_guide = {}
-  local total_bubble_count, counts_by_type = get_bubble_counts()
-  local bubble_types = {}
-  for bubble_type, count in pairs(counts_by_type) do
-    if bubble_type >= 1 and bubble_type <= 8 then
-      bubble_types[#bubble_types+1] = bubble_type
-    end
-  end
-  game.next_bubble_index = 1
-  game.next_bubble = {
-    x = game.launcher_x,
-    y = game.launcher_y,
-    bubble_type = get_next_bubble_type(game.next_bubble_index, bubble_types),
-    velocity_x = 0,
-    velocity_y = 0
-  }
 
-  game.bursting_bubbles = {}
+  game.shader = love.graphics.newShader [[
-  game.falling_bubbles = {}
+    uniform float progress;
+    vec4 effect(vec4 color, Image texture, vec2 texture_coords, vec2 screen_coords)
+    {
+      vec4 pixel = Texel(texture, texture_coords);
+      number average = (pixel.r + pixel.b + pixel.g) / 3.0;
+      pixel.r = pixel.r + (average-pixel.r) * progress;
+      pixel.g = pixel.g + (average-pixel.g) * progress;
+      pixel.b = pixel.b + (average-pixel.b) * progress;
+      return pixel;
+    }
+  ]]
+
+  start_level()
 end
 
 function love.update(dt)
-  if game.paused then
+  if game.game_over then
+    if game.fade_to_grey.time < game.fade_to_grey.duration then
+      game.fade_to_grey.time = game.fade_to_grey.time + 1
+      game.fade_to_grey.progress =
+        game.fade_to_grey.time / game.fade_to_grey.duration
+      game.shader:send("progress", game.fade_to_grey.progress)
+    end
+  end
+
+  if game.current_bubble and game.current_bubble_tween then
+    game.current_bubble_tween.t = game.current_bubble_tween.t + 1
+    if game.current_bubble_tween.t < game.current_bubble_tween.d then
+      game.current_bubble.x = easing.outBack(
+        game.current_bubble_tween.t,
+        game.current_bubble_tween.b,
+        game.current_bubble_tween.c,
+        game.current_bubble_tween.d
+      )
+    else
+      game.current_bubble_tween = nil
+      game.current_bubble.x = game.launcher_x
+    end
+  end
+
+  if game.next_bubble_tween then
+    game.next_bubble_tween.t = game.next_bubble_tween.t + 1
+    if game.next_bubble_tween.t < game.next_bubble_tween.d then
+      game.next_bubble.scale = easing.outBack(
+        game.next_bubble_tween.t,
+        game.next_bubble_tween.b,
+        game.next_bubble_tween.c,
+        game.next_bubble_tween.d
+      )
+    else
+      game.next_bubble_tween = nil
+      game.next_bubble.scale = 1
+    end
+  end
+
+  if game.bubble_swap_tween then
+    game.bubble_swap_tween.t = game.bubble_swap_tween.t + 1
+    if game.bubble_swap_tween.t < game.bubble_swap_tween.d then
+      game.current_bubble.x = easing.outBack(
+        game.bubble_swap_tween.t,
+        game.bubble_swap_tween.b1,
+        game.bubble_swap_tween.c1,
+        game.bubble_swap_tween.d
+      )
+      game.next_bubble.x = easing.outBack(
+        game.bubble_swap_tween.t,
+        game.bubble_swap_tween.b2,
+        game.bubble_swap_tween.c2,
+        game.bubble_swap_tween.d
+      )
+    else
+      game.bubble_swap_tween = nil
+      game.next_bubble.bubble_type, game.current_bubble.bubble_type =
+        game.current_bubble.bubble_type, game.next_bubble.bubble_type
+      game.current_bubble.x = game.launcher_x
+      game.next_bubble.x = game.launcher_x + game.bubble_diameter * 2
+    end
+  end
+
+  if game.paused or game.game_over then
     return
   end
 
@@ -425,29 +537,77 @@ function love.update(dt)
     end
   end
 
-  if game.next_bubble and
+  if game.ceiling_drop_tween then
-    (game.next_bubble.velocity_x ~= 0 or game.next_bubble.velocity_y ~= 0) then
+    local old_y = game.ceiling_bottom
+    game.ceiling_drop_tween.t = game.ceiling_drop_tween.t + 1
+    game.ceiling_bottom = easing.outBack(
+      game.ceiling_drop_tween.t,
+      game.ceiling_drop_tween.b,
+      game.ceiling_drop_tween.c,
+      game.ceiling_drop_tween.d
+    )
+    local diff_y = game.ceiling_bottom - old_y
+    for i = 1, #game.bubble_slots do
+      game.bubble_slots[i].y = game.bubble_slots[i].y + diff_y
+      if game.bubble_slots[i].bubble_type ~= 0 and
+         game.bubble_slots[i].y > game.level_bottom then
+        game.game_over = true
+        game.fade_to_grey.time = 0
+        game.fade_to_grey.progress = 0.0
+      end
+    end
+    if game.game_over then
+      return
+    end
+    if game.ceiling_drop_tween.t == game.ceiling_drop_tween.d then
+      game.ceiling_drop_tween = nil
+    end
+    if game.show_aim_guide then
+      generate_aim_guide(game.launcher_rotation)
+    end
+  end
+
+  if game.current_bubble and
+    (game.current_bubble.velocity_x ~= 0 or game.current_bubble.velocity_y ~= 0) then
 
     local movement_info
 
     movement_info = move_bubble(
-      game.next_bubble.x,
+      game.current_bubble.x,
-      game.next_bubble.y,
+      game.current_bubble.y,
-      game.next_bubble.velocity_x,
+      game.current_bubble.velocity_x,
-      game.next_bubble.velocity_y
+      game.current_bubble.velocity_y
     )
-    game.next_bubble.x = movement_info.x
+    game.current_bubble.x = movement_info.x
-    game.next_bubble.y = movement_info.y
+    game.current_bubble.y = movement_info.y
-    game.next_bubble.velocity_x = movement_info.velocity_x
+    game.current_bubble.velocity_x = movement_info.velocity_x
-    game.next_bubble.velocity_y = movement_info.velocity_y
+    game.current_bubble.velocity_y = movement_info.velocity_y
 
     if movement_info.should_stop then
       game.bubble_slots[movement_info.nearest_slot_index].bubble_type =
-        game.next_bubble.bubble_type
+        game.current_bubble.bubble_type
+
+      if game.ceiling_should_drop then
+        game.ceiling_drop_tween = {
+          t = 0,
+          d = 30,
+          b = game.ceiling_bottom,
+          c = game.row_gap
+        }
+      end
+      game.ceiling_should_drop = false
 
       local matches = find_matches(movement_info.nearest_slot_index)
+
+      if #matches < 3 and game.current_bubble.y > game.level_bottom then
+        game.game_over = true
+        game.fade_to_grey.time = 0
+        game.fade_to_grey.progress = 0.0
+        return
+      end
+
       if #matches >= 3 then
-        game.next_bubble = nil
+        game.current_bubble = nil
 
         -- remove matches
         for i = 1, #matches do
@@ -461,16 +621,16 @@ function love.update(dt)
             alpha = 1.0
           }
           game.bubble_slots[index].bubble_type = 0
-          local points = i * 5
+          local points = (i + 1) ^ 2
           game.score = game.score + points
           game.points_display[#game.points_display+1] = {
             points = points,
             x = game.bubble_slots[index].x,
             y = game.bubble_slots[index].y,
             tween = {
-              delay = 0,
+              delay = (i - 1) * 5,
               t = 0,
-              d = 50,
+              d = (i - 1) * 10 + 40,
               b = game.bubble_slots[index].y - 10,
               c = -game.bubble_radius
             }
@@ -491,15 +651,14 @@ function love.update(dt)
           game.bubble_slots[index].bubble_type = 0
           local points = (i + 1) ^ 3
           game.score = game.score + points
-          print(points, "points")
           game.points_display[#game.points_display+1] = {
             points = points,
             x = game.bubble_slots[index].x,
             y = game.bubble_slots[index].y,
             tween = {
-              delay = 0,
+              delay = (i - 1) * 5,
               t = 0,
-              d = 50,
+              d = (i - 1) * 10 + 40,
               b = game.bubble_slots[index].y - 10,
               c = -game.bubble_radius
             }
@@ -508,7 +667,7 @@ function love.update(dt)
       end
 
       if game.show_aim_guide then
-        generate_aim_guide(love.mouse:getX(), love.mouse:getY())
+        generate_aim_guide(game.launcher_rotation)
       end
 
       -- calculate remaining bubble types
@@ -523,14 +682,22 @@ function love.update(dt)
           end
         end
         -- get next bubble
-        game.next_bubble_index = game.next_bubble_index + 1
+        game.current_bubble = {
-        game.next_bubble = {
+          x = game.launcher_x + game.bubble_diameter * 2,
-          x = game.launcher_x,
           y = game.launcher_y,
-          bubble_type = get_next_bubble_type(game.next_bubble_index, bubble_types),
+          bubble_type = game.next_bubble.bubble_type,
           velocity_x = 0,
           velocity_y = 0
         }
+        game.current_bubble_tween = {
+          t = 0,
+          d = 30,
+          b = game.current_bubble.x,
+          c = game.launcher_x - game.current_bubble.x
+        }
+        game.next_bubble.bubble_type = get_next_bubble_type(game.bubbles_launched+1, bubble_types)
+        game.next_bubble.scale = 0
+        game.next_bubble_tween = {t = 0, d = 30, b = 0, c = 1}
       end
     end
   end
@@ -599,7 +766,58 @@ function love.draw(alpha)
   love.graphics.draw(game.background_image, 0, 0)
   love.graphics.draw(game.background_image, game.background_width, 0)
 
+  -- draw walls
+  love.graphics.setColor(0, 0, 0, 1)
+  love.graphics.rectangle(
+    'line',
+    game.level_left,
+    game.level_top,
+    game.level_width,
+    game.level_height,
+    game.bubble_radius,
+    game.bubble_radius
+  )
+  if game.ceiling_bottom > game.level_top then
+    love.graphics.line(
+      game.level_left,
+      game.ceiling_bottom,
+      game.level_right,
+      game.ceiling_bottom
+    )
+  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 not game.game_over and (ceiling_drops_in == 1 or game.ceiling_should_drop) then
+    local dx = love.math.random(-2, 2)
+    local dy = love.math.random(-2, 2)
+    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]
@@ -612,25 +830,9 @@ function love.draw(alpha)
         game.bubble_radius,
         game.bubble_radius
       )
-    else
-      love.graphics.circle(
-        'line',
-        slot.x,
-        slot.y,
-        game.bubble_radius
-      )
     end
   end
-
+  love.graphics.origin()
-  -- draw walls
-  love.graphics.setColor(0, 0, 0, 1)
-  love.graphics.rectangle(
-    'line',
-    game.level_left,
-    game.level_top,
-    game.level_width,
-    game.level_height
-  )
 
   -- draw launcher
   love.graphics.setColor(1, 1, 1, 1)
@@ -681,42 +883,6 @@ function love.draw(alpha)
     end
   end
 
-  -- draw next bubble
-  -- if moving, extrapolate position based on alpha value from love.run
-  if game.next_bubble then
-    love.graphics.setColor(1, 1, 1, 1)
-    love.graphics.draw(
-      game.bubble_images[game.next_bubble.bubble_type],
-      game.next_bubble.x + game.next_bubble.velocity_x * alpha,
-      game.next_bubble.y + game.next_bubble.velocity_y * alpha,
-      0,
-      1,
-      1,
-      game.bubble_radius,
-      game.bubble_radius
-    )
-  end
-
-  -- draw score
-  love.graphics.setFont(game.score_font)
-  love.graphics.setColor(0, 0, 0, 1)
-  love.graphics.print(
-    string.format("%08d", game.score),
-    game.bubble_radius,
-    game.bubble_radius
-  )
-  love.graphics.setFont(game.points_font)
-  for i = 1, #game.points_display do
-    local p = game.points_display[i]
-    love.graphics.printf(
-      p.points,
-      p.x - game.bubble_radius,
-      p.y,
-      game.bubble_diameter, -- TODO: fix this, wraps sometimes
-      'center'
-    )
-  end
-
   -- draw aim guide
   if game.show_aim_guide then
     love.graphics.setColor(0, 0, 0, 1)
@@ -729,31 +895,181 @@ function love.draw(alpha)
       )
     end
   end
+
+  -- draw upcoming bubble
+  love.graphics.setColor(1, 1, 1, 1)
+  love.graphics.draw(
+    game.bubble_images[game.next_bubble.bubble_type],
+    game.next_bubble.x,
+    game.next_bubble.y,
+    0,
+    game.next_bubble.scale,
+    game.next_bubble.scale,
+    game.bubble_radius,
+    game.bubble_radius
+  )
+
+  -- draw current bubble
+  -- if moving, extrapolate position based on alpha value from love.run
+  if game.current_bubble then
+    love.graphics.setColor(1, 1, 1, 1)
+    love.graphics.draw(
+      game.bubble_images[game.current_bubble.bubble_type],
+      game.current_bubble.x + game.current_bubble.velocity_x * alpha,
+      game.current_bubble.y + game.current_bubble.velocity_y * alpha,
+      0,
+      1,
+      1,
+      game.bubble_radius,
+      game.bubble_radius
+    )
+  end
+
+
+  if game.game_over then
+    love.graphics.setShader()
+  end
+
+  -- draw help text
+  love.graphics.setFont(game.bm_font18)
+  love.graphics.setColor(1, 1, 1, 1)
+  love.graphics.printf(
+    "S to swap",
+    game.launcher_x + game.bubble_diameter,
+    game.launcher_y + game.bubble_radius + 10,
+    game.bubble_diameter * 2,
+    'center'
+  )
+
+  -- draw score
+  love.graphics.setFont(game.bm_font72)
+  love.graphics.setColor(1, 1, 1, 1)
+  love.graphics.print(
+    string.format("%08d", game.score),
+    game.bubble_radius,
+    game.bubble_radius
+  )
+  love.graphics.setFont(game.bm_font36)
+  for i = 1, #game.points_display do
+    local p = game.points_display[i]
+    if not game.font36_widths[p.points] then
+      game.font36_widths[p.points] = game.bm_font36:getWidth(p.points)
+    end
+    if p.tween.delay == 0 then
+      love.graphics.printf(
+        p.points,
+        p.x - game.bubble_radius,
+        p.y,
+        game.font36_widths[p.points],
+        'center'
+      )
+    end
+  end
+
+  -- draw game over
+  if game.game_over and game.fade_to_grey.progress == 1.0 then
+    love.graphics.setColor(0, 0, 0, 0.8)
+    love.graphics.rectangle(
+      'fill',
+      game.level_left + 10,
+      game.window_height / 2 - 80,
+      game.level_width - 20,
+      160,
+      20,
+      20
+    )
+    love.graphics.setColor(1, 1, 1, 1)
+    love.graphics.draw(
+      game.game_over_image,
+      game.window_center_x,
+      game.window_center_y,
+      0,
+      1,
+      1,
+      game.game_over_image:getWidth() / 2,
+      game.game_over_image:getHeight() / 2
+    )
+  end
+
 end
 
 function love.mousepressed(x, y, button, is_touch, presses)
-  if button == 1 and game.next_bubble then
+  if game.game_over then
-    local diff_x = x - game.launcher_x
+    start_level()
-    local diff_y = y - game.launcher_y
+    return
-    local dist = math.sqrt(diff_x * diff_x + diff_y * diff_y)
+  end
-    game.next_bubble.velocity_x = diff_x / dist * game.bubble_speed
+  if button == 1 and game.current_bubble and
-    game.next_bubble.velocity_y = diff_y / dist * game.bubble_speed
+     game.current_bubble.x == game.launcher_x and
+     game.current_bubble.y == game.launcher_y and
+     game.current_bubble.velocity_x == 0 and
+     game.current_bubble.velocity_y == 0 then
+
+    -- use the angle from mousemoved to calculate the velocity so that shooting
+    -- backwards is not possible
+    game.current_bubble.velocity_x =
+      math.cos(game.launcher_rotation) * game.bubble_speed
+    game.current_bubble.velocity_y =
+      math.sin(game.launcher_rotation) * game.bubble_speed
+
+    game.bubbles_launched = game.bubbles_launched + 1
+
+    -- if ceiling_should_drop is true, it will create a tween to drop the
+    -- ceiling (and bubbles) after the bubble that was just launched comes to a
+    -- stop in love.update()
+    game.ceiling_should_drop = game.bubbles_launched % game.ceiling_drops_after == 0
+  end
+end
+
+function love.wheelmoved(x, y)
+  if y ~= 0 then
+    local angle = game.launcher_rotation
+    angle = angle + (y < 0 and 0.01 or -0.01)
+    game.launcher_rotation = clamp_launcher_angle(angle)
+    if game.show_aim_guide then
+      generate_aim_guide(game.launcher_rotation)
+    end
   end
 end
 
 function love.mousemoved(x, y, dx, dy, is_touch)
-  local diff_x = x - game.launcher_x
+  if not game.game_over then
-  local diff_y = y - game.launcher_y
+    local diff_x = x - game.launcher_x
-  game.launcher_rotation = math.atan2(diff_y, diff_x)
+    local diff_y = y - game.launcher_y
+    local angle = math.atan2(diff_y, diff_x)
 
-  if game.show_aim_guide then
+    -- force angle to be positive
-    generate_aim_guide(x, y)
+    if y < game.launcher_y then
+      angle = angle + tau
+    end
+
+    game.launcher_rotation = clamp_launcher_angle(angle)
+
+    if game.show_aim_guide then
+      generate_aim_guide(game.launcher_rotation)
+    end
   end
 end
 
 function love.keypressed(key, scan_code, is_repeat)
   if key == 'escape' then
     love.event.quit()
+  elseif game.game_over or key == 'r' then
+    start_level()
+  elseif key == 's' then
+    if game.current_bubble and
+       game.current_bubble.x == game.launcher_x and
+       game.current_bubble.y == game.launcher_y and
+       game.current_bubble.velocity_x == 0 and
+       game.current_bubble.velocity_y == 0 then
+      game.bubble_swap_tween = {
+        t = 0,
+        d = 30,
+        b1 = game.launcher_x,
+        b2 = game.launcher_x + game.bubble_diameter * 2,
+        c1 = game.bubble_diameter * 2,
+        c2 = -game.bubble_diameter * 2
+      }
+    end
   elseif key == 'space' then
     game.paused = not game.paused
   elseif key == 'n' and game.paused then