Extracted Crosshair and Demo from Game

lib/demo.rb

@@ -0,0 +1,108 @@
+class IMICFPS
+  class Demo
+    def initialize(camera:, player:, demo:, mode:)
+      @camera = camera
+      @player = player
+      @demo = demo
+      @mode = mode
+
+      @index= 0
+      @tick = 0
+      @changed = false
+
+      if ARGV.join.include?("--playdemo")
+        @data = File.exist?(demo) ? File.read("./demo.dat").lines : ""
+
+      elsif ARGV.join.include?("--savedemo")
+        @file = File.open(demo, "w")
+
+        @last_pitch = @camera.orientation.z
+        @last_yaw   = @camera.orientation.y
+
+        at_exit { @file.close }
+      end
+    end
+
+    def button_down(id)
+      if recording?
+        unless @last_written_index == @index
+          @last_written_index = @index
+          @file.puts("tick #{@index}")
+        end
+
+        @file.puts("down #{InputMapper.action(id)}")
+        @changed = true
+      end
+    end
+
+    def button_up(id)
+      if recording?
+        unless @last_written_index == @index
+          @last_written_index = @index
+          @file.puts("tick #{@index}")
+        end
+
+        @file.puts("up #{InputMapper.action(id)}")
+        @changed = true
+      end
+    end
+
+    def update
+      play if playing?
+      record if recording?
+
+      @tick += 1
+    end
+
+    def playing?; @mode == :play; end
+    def recording?; !playing?; end
+
+    def play
+      if @data[@index]&.start_with?("tick")
+        if @tick == @data[@index].split(" ").last.to_i
+          @index+=1
+
+          until(@data[@index]&.start_with?("tick"))
+            break unless @data[@index]
+
+            data = @data[@index].split(" ")
+            if data.first == "up"
+              input = InputMapper.get(data.last.to_sym)
+              key = input.is_a?(Array) ? input.first : input
+              $window.current_state.button_up(key) if key
+
+            elsif data.first == "down"
+              input = InputMapper.get(data.last.to_sym)
+              key = input.is_a?(Array) ? input.first : input
+              $window.current_state.button_down(key) if key
+
+            elsif data.first == "mouse"
+              @camera.orientation.z = data[1].to_f
+              @player.orientation.y = (data[2].to_f * -1) - 180
+            else
+              # hmm
+            end
+
+            @index += 1
+          end
+        end
+      end
+    end
+
+    def record
+      if @camera.orientation.z != @last_pitch || @camera.orientation.y != @last_yaw
+        unless @last_written_index == @index
+          @last_written_index = @index
+          @file.puts("tick #{@index}")
+        end
+
+        @file.puts("mouse #{@camera.orientation.z} #{@camera.orientation.y}")
+        @last_pitch = @camera.orientation.z
+        @last_yaw   = @camera.orientation.y
+      end
+
+      @changed = false
+      @index  += 1
+    end
+  end
+end