4 files changed, 24 insertions, 3 deletions
diff --git a/samples/05_mouse/01_mouse_click/app/main.rb b/samples/05_mouse/01_mouse_click/app/main.rb
index c1a6e29..e37a753 100644
--- a/samples/05_mouse/01_mouse_click/app/main.rb
+++ b/samples/05_mouse/01_mouse_click/app/main.rb
@@ -33,9 +33,11 @@
 
  - args.outputs.borders: An array. The values generate a border.
    The parameters are [X, Y, WIDTH, HEIGHT, RED, GREEN, BLUE]
+   For more information about borders, go to mygame/documentation/03-solids-and-borders.md.
 
  - args.outputs.labels: An array. The values generate a label.
    The parameters are [X, Y, TEXT, SIZE, ALIGNMENT, RED, GREEN, BLUE, ALPHA, FONT STYLE]
+   For more information about labels, go to mygame/documentation/02-labels.
 
 =end
 
@@ -47,12 +49,23 @@ class TicTacToe
   # Starts the game with player x's turn and creates an array (to_a) for space combinations.
   # Calls methods necessary for the game to run properly.
   def tick
-    state.current_turn ||= :x
-    state.space_combinations = [-1, 0, 1].product([-1, 0, 1]).to_a
+    init_new_game
     render_board
     input_board
   end
 
+  def init_new_game
+    state.current_turn       ||= :x
+    state.space_combinations ||= [-1, 0, 1].product([-1, 0, 1]).to_a
+
+    state.spaces             ||= {}
+
+    state.space_combinations.each do |x, y|
+      state.spaces[x]    ||= {}
+      state.spaces[x][y] ||= state.new_entity(:space)
+    end
+  end
+
   # Uses borders to create grid squares for the game's board. Also outputs the game pieces using labels.
   def render_board
     square_size = 80
@@ -128,6 +141,7 @@ class TicTacToe
   def input_restart_game
     return unless state.game_over
     gtk.reset
+    init_new_game
   end
 
   # Checks if x or o won the game.
diff --git a/samples/05_mouse/02_mouse_move/app/main.rb b/samples/05_mouse/02_mouse_move/app/main.rb
index b015277..d9387dc 100644
--- a/samples/05_mouse/02_mouse_move/app/main.rb
+++ b/samples/05_mouse/02_mouse_move/app/main.rb
@@ -14,9 +14,11 @@
 
  - args.inputs.keyboard.key_down.KEY: Determines if a key is being held or pressed.
    Stores the frame the "down" event occurred.
+   For more information about the keyboard, go to mygame/documentation/06-keyboard.md.
 
  - args.outputs.sprites: An array. The values generate a sprite.
    The parameters are [X, Y, WIDTH, HEIGHT, PATH, ANGLE, ALPHA, RED, GREEN, BLUE]
+   For more information about sprites, go to mygame/documentation/05-sprites.md.
 
  - args.state.new_entity: Used when we want to create a new object, like a sprite or button.
    When we want to create a new object, we can declare it as a new entity and then define
@@ -194,7 +196,7 @@ class ProtectThePuppiesFromTheZombies
   def calc_kill_zombie
 
     # Find all zombies that intersect with the player. They are considered killed.
-    killed_this_frame = state.zombies.find_all { |z| z.sprite.intersect_rect? state.player_sprite }
+    killed_this_frame = state.zombies.find_all { |z| z.sprite && (z.sprite.intersect_rect? state.player_sprite) }
     state.zombies = state.zombies - killed_this_frame # remove newly killed zombies from zombies collection
     state.killed_zombies += killed_this_frame # add newly killed zombies to killed zombies
 
diff --git a/samples/05_mouse/03_mouse_move_paint_app/app/main.rb b/samples/05_mouse/03_mouse_move_paint_app/app/main.rb
index b177fd6..9303949 100644
--- a/samples/05_mouse/03_mouse_move_paint_app/app/main.rb
+++ b/samples/05_mouse/03_mouse_move_paint_app/app/main.rb
@@ -34,6 +34,7 @@
 
  - args.outputs.labels: An array. The values in the array generate a label.
    The parameters are [X, Y, TEXT, SIZE, ALIGN, RED, GREEN, BLUE, ALPHA, FONT STYLE]
+   For more information about labels, go to mygame/documentation/02-labels.md.
 
  - ARRAY#inside_rect?: Returns true or false depending on if the point is inside the rect.
 
diff --git a/samples/05_mouse/04_coordinate_systems/app/main.rb b/samples/05_mouse/04_coordinate_systems/app/main.rb
index 8e5578f..fcfa090 100644
--- a/samples/05_mouse/04_coordinate_systems/app/main.rb
+++ b/samples/05_mouse/04_coordinate_systems/app/main.rb
@@ -5,6 +5,7 @@
  - args.inputs.mouse.click.position: Coordinates of the mouse's position on the screen.
    Unlike args.inputs.mouse.click.point, the mouse does not need to be pressed down for
    position to know the mouse's coordinates.
+   For more information about the mouse, go to mygame/documentation/07-mouse.md.
 
  Reminders:
 
@@ -20,12 +21,15 @@
 
  - args.outputs.labels: An array that generates a label.
    The parameters are [X, Y, TEXT, SIZE, ALIGN, RED, GREEN, BLUE, ALPHA, FONT STYLE]
+   For more information about labels, go to mygame/documentation/02-labels.md.
 
  - args.outputs.solids: An array that generates a solid.
    The parameters are [X, Y, WIDTH, HEIGHT, RED, GREEN, BLUE, ALPHA]
+   For more information about solids, go to mygame/documentation/03-solids-and-borders.md.
 
  - args.outputs.lines: An array that generates a line.
    The parameters are [X, Y, X2, Y2, RED, GREEN, BLUE, ALPHA]
+   For more information about lines, go to mygame/documentation/04-lines.md.
 
 =end