commit e18dbf8455999c902c4c998eea82c77ebc583c8c
Author: Guido Schweizer <guido.schweizer@posteo.de>
Date:   Mon May 30 21:56:28 2022 +1200

    init

diff --git a/.gitignore b/.gitignore
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--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+dragonruby-macos
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diff --git a/.ruby-version b/.ruby-version
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index 0000000..6ebad14
--- /dev/null
+++ b/.ruby-version
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+3.1.2
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diff --git a/README.md b/README.md
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+++ b/README.md
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+## Sample of Conways life
+
+copy main.rb to dragonruby and run it
+
+absolute just got it running version
diff --git a/main.rb b/main.rb
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index 0000000..711b27b
--- /dev/null
+++ b/main.rb
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+class Game
+  attr_reader :map, :round
+
+  def initialize(max_x,max_y,input)
+    @map = []
+    @max_x = max_x
+    @max_y = max_y
+    @round = 0
+
+    max_x.times do |i|
+      col = []
+      max_y.times do |j|
+        if input.include? [i,j]
+          col << 1
+        else
+          col << 0
+        end
+      end
+      map << col
+    end
+  end
+
+  def tick
+    @round += 1
+    calculate
+
+    return map
+  end
+
+  private
+
+  attr_reader :max_x, :max_y
+
+  def calculate
+    new_map = []
+    max_x.times do |x|
+      col = []
+      max_y.times do |y|
+        new_cell_value = check_cell(x,y,map)
+        col << new_cell_value
+      end
+      new_map << col
+    end
+    @map = new_map
+  end
+
+  def check_cell(x,y,map)
+    adjacent_count =  cell_value(map,x+1,y+1) +
+                      cell_value(map,x+1,y) +
+                      cell_value(map,x+1,y-1) +
+                      cell_value(map,x,y+1) +
+                      cell_value(map,x,y-1) +
+                      cell_value(map,x-1,y+1) +
+                      cell_value(map,x-1,y) +
+                      cell_value(map,x-1,y-1)
+
+    is_live_cell = map[x][y] == 1
+
+    if is_live_cell
+      return adjacent_count == 2 || adjacent_count == 3 ? 1 : 0
+    else # dead_cell
+      return adjacent_count == 3 ? 1 : 0
+    end
+  end
+
+  def cell_value(map,x,y)
+    return 0 if x > max_x - 1 || x < 0
+    return 0 if y > max_y - 1 || y < 0
+
+    map[x][y]
+  end
+
+  def print_map
+    puts "\n--- the map ---"
+    max_y.times do |y|
+      max_x.times do |x|
+        char = map[x][y] == 1 ? "#" : "."
+        print char
+      end
+      print "\n"
+    end
+  end
+
+end
+
+MAX_X = 40
+MAX_Y = 24
+
+BLOCK_SIZE = (1280/MAX_X).round
+
+INPUT = [
+  [9,9],
+  [10,10],
+  [9,11],
+  [11,11],
+  [9,12],
+  [11,12],
+  [13,13],
+  [14,13],
+  [15,13],
+  [16,13],
+  [16,15],
+  [16,16],
+  [17,17],
+]
+
+SPEED = 0.3 # every second
+TICK_FOR_STEP = (SPEED * 60).round
+
+def tick args
+
+  args.outputs.labels  << [640, 500, 'Conways game of life', 5, 1]
+  # args.outputs.labels  << [640, 460, 'Go to docs/docs.html and read it!', 5, 1]
+  # args.outputs.labels  << [640, 420, 'Join the Discord! https://discord.dragonruby.org', 5, 1]
+  # args.outputs.sprites << [576, 280, 128, 101, 'dragonruby.png']
+  game = args.state.game
+  if game.nil?
+    game = Game.new(MAX_X,MAX_Y,INPUT)
+    args.state.game = game
+  end
+
+  args.outputs.solids << [
+    0, 
+    0,   
+    MAX_X*BLOCK_SIZE,     
+    MAX_Y*BLOCK_SIZE,   
+    164,   
+    212,    
+    220,   
+    128]
+
+  if args.state.tick_count % TICK_FOR_STEP == 0
+    game.tick
+  end
+
+  MAX_X.times do |x|
+    MAX_Y.times do |y|
+      live_cell = game.map[x][y] == 1 ? true : false
+      args.outputs.solids << [
+        x*BLOCK_SIZE, 
+        y*BLOCK_SIZE,   
+        BLOCK_SIZE,     
+        BLOCK_SIZE,   
+        219, 
+        163, 
+        211,
+        255] if live_cell
+    end
+  end
+
+  args.outputs.labels  << [640, 600, "Round ##{game.round}", 5, 1]
+  # args.outputs.labels  << [640, 700, "Tick count ##{args.state.tick_count}", 5, 1]
+  # args.outputs.labels << [10, 710, "framerate: #{args.gtk.current_framerate.round}"]
+
+
+  # render
+  #  X    Y  WIDTH  HEIGHT  RED  GREEN  BLUE  ALPHA
+
+end
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