Tim Hall - Final Project

assignments/final_project.rb

@@ -57,19 +57,208 @@
 #  ---------------------------------------------------------------------------------------
 #  Suggested Implementation
 
-module FinalProject
-  class GameOfLife
-    def initialize(size)
-      # randomly initialize the board
+
+class Cell
+  attr_accessor :alive, :x, :y
+  def initialize(x=1, y=2)
+    @alive = true if 0.5 > rand
+    #@alive = true
+    @x = x
+    @y = y
+  end
+
+  def to_s                  # enable this for rendering
+    @alive ? "O" : " "
+  end
+
+  def alive?
+    @alive
+  end
+
+end
+
+class GameOfLife
+  attr_accessor :width, :height, :board, :cells
+
+  def initialize(height=60, width=230)
+    @width, @height = width, height
+    # @board = Array.new(height) {Array.new(width){Cell.new}}
+    # The board will be a multidimensional array of cells:
+    @cells = []   
+    @board = Array.new(height) do |row|
+              Array.new(width) do |col|
+                cell = Cell.new(col, row)
+                cells << cell
+                cell
+              end
+            end
+
+  end
+
+  def evolve
+    # apply rules to each cell and generate new state
+    alive_cells = []
+    dead_cells = []
+    #puts self.cells
+    # test_cell = self.cells[5]
+    # puts ""
+    # puts "test_cell = #{test_cell}"
+    # puts "test_cell_neighbors = #{self.neighbors(test_cell).count}"
+
+    self.cells.each do |cell|
+      # puts "*******NEW CELL*******"
+      # puts "cell.x = #{cell.x}"
+      # puts "cell.y = #{cell.y}"
+      #puts "self.neighbors(cell) = #{self.neighbors(cell)}"
+      # puts "self.neighbors(cell).count = #{self.neighbors(cell).count}"
+
+      count_live_neighbors = self.neighbors(cell).count
+
+      # puts "count_live_neighbors = #{count_live_neighbors}"
+      # puts ""
+      # puts ""
+      # puts "cell.alive? = #{cell.alive?}"
+      # puts cell
+      # puts "count = #{count}"
+      # puts "cell.alive? = #{cell.alive?}"
+      # puts "count = #{count}"
+
+
+      if (cell.alive? and (count_live_neighbors < 2  or count_live_neighbors > 3))       # Rule 1 and 2 - cell dies
+        #puts "cell was alive. count < 2 or > 3. it must die."
+        # puts "cell was alive, and count < 2  or count > 3.... cell will now be dead"
+        dead_cells << cell
+      elsif ((cell.alive?) and (count_live_neighbors == 2 or count_live_neighbors == 3))    # Rule 3 - cell remains alive
+        #puts "cell was alive. count is 2 or 3. cell may continue living."
+        # puts "cell was alive, and count == 2 or 3... cell will remain alive."
+        alive_cells << cell
+      elsif ((cell.alive? == false) and (count_live_neighbors == 3))     #Rule 4 - cell was dead, but becomes alive.
+        #puts "cell was dead. count is exactly 3. cell becomes alive."
+        # puts "cell was dead, and count == 3... cell will become alive."
+        alive_cells << cell
+      else
+        #puts "cell was dead, but count is not exactly 3, so it will stay dead."
+        # puts "cell did not meet any other conditions, so it will be dead."
+        dead_cells << cell
+      end
+      #puts "*******END CELL*******"
     end
-    def evolve
-      # apply rules to each cell and generate new state
+
+    alive_cells.each do |cell|
+        cell.alive = true
+      end
+
+    dead_cells.each do |cell|
+      cell.alive = false
     end
-    def render
-      # render the current state of the board
+    self.cells
+
+    # puts "test_cell after logic = #{test_cell}"
+
+  end
+
+  def neighbors(cell)       #return neighboring cells array
+    ca = []
+    ca << cell
+    #puts "cell at beginning = #{ca}"
+    alive_neighbors = []
+    #puts "cell = #{ca}"
+
+    # Misc. Debugging...
+    # puts "height:"
+    # puts self.height
+    # puts "width:"
+    # puts self.width
+    # puts "result.x:"
+    # puts result.x
+    # puts "result.y:"
+    # puts result.y
+    # puts""
+
+    #### TOP-LEFT NEIGHBOR ####
+    neighbor_tl = self.board[cell.y-1][cell.x-1]
+    alive_neighbors << neighbor_tl if neighbor_tl.alive == true
+
+    #### TOP NEIGHBOR ####
+    neighbor_t = self.board[cell.y-1][cell.x]
+    alive_neighbors << neighbor_t if neighbor_t.alive == true
+
+    #### LEFT NEIGHBOR ####
+    neighbor_l = self.board[cell.y][cell.x-1]
+    alive_neighbors << neighbor_l if neighbor_l.alive == true
+
+    #############################################################
+    #### SPECIAL CASES - AVOID GOING BEYOND FINAL INDEX OF ARRAYS:
+
+    #### TOP-RIGHT NEIGHBOR ####
+    if cell.x == self.width-1
+      neighbor_tr = self.board[cell.y-1][0]
+    else
+      neighbor_tr = self.board[cell.y-1][cell.x+1]
+    end
+    alive_neighbors << neighbor_tr if neighbor_tr.alive == true
+
+    #### BOTTOM-RIGHT NEIGHBOR ####
+    if ((cell.y == self.height-1) and (cell.x == self.width-1))
+      neighbor_br = self.board[0][0]
+    elsif cell.y == self.height-1
+      neighbor_br = self.board[0][cell.x+1]
+    elsif cell.x == self.width-1
+      neighbor_br = self.board[cell.y+1][0]
+    else
+      neighbor_br = self.board[cell.y+1][cell.x+1]
+    end
+    alive_neighbors << neighbor_br if neighbor_br.alive == true
+
+    # #### BOTTOM-LEFT NEIGHBOR ####
+    if cell.y == self.height-1
+      neighbor_bl = self.board[0][cell.x-1]
+    else
+      neighbor_bl = self.board[cell.y+1][cell.x-1]
     end
-    def run(num_generations)
-      # evolve and render for num_generations
+    alive_neighbors << neighbor_bl if neighbor_bl.alive == true
+
+    # #### RIGHT NEIGHBOR ####
+    if cell.x == self.width-1
+      neighbor_r = self.board[cell.y][0]
+    else
+      neighbor_r = self.board[cell.y][cell.x+1]
+    end
+    alive_neighbors << neighbor_r if neighbor_r.alive == true
+
+    # #### BOTTOM NEIGHBOR ####
+    if cell.y == self.height-1
+      neighbor_b = self.board[0][cell.x]
+    else
+      neighbor_b = self.board[cell.y+1][cell.x]
+    end
+    alive_neighbors << neighbor_b if neighbor_b.alive == true
+
+
+    alive_neighbors
+    # Misc. debugging used:
+    # puts "alive_neighbors.count = #{alive_neighbors.count}"
+    # puts "alive_neighbors is an Array? #{alive_neighbors.instance_of? Array}"
+    # puts "alive_neighbors.count = #{alive_neighbors.count}"
+    # puts "alive_neighbors = #{alive_neighbors}"
+
+  end
+
+  def render
+    @board.map { |row| row.join }.join("\n")
+    #print @board.to_s                         # Not Needed, since run calls puts
+  end
+
+  def run(num_generations = 10)
+    # evolve and render for num_generations
+    (1..num_generations).each do |x|
+      #puts "Generation #{x}"
+      evolve
+      system "clear" or system "cls"
+      #puts self.to_s
+      puts self.render
+      sleep(0.25)
     end
   end
+
 end