Add simple gui client to examples

examples/08_gui_snapshot.rb

@@ -0,0 +1,73 @@
+#!/usr/bin/env ruby
+# frozen_string_literal: true
+
+require 'gosu'
+require_relative '../lib/teeworlds_client'
+
+class Entitiy
+  attr_reader :x, :y
+
+  def initialize(attr = {})
+    @x = attr[:x]
+    @y = attr[:y]
+  end
+end
+
+class Tee < Entitiy
+  attr_reader :w, :h
+
+  def initialize(attr = {})
+    @w = 32
+    @h = 32
+    super
+  end
+end
+
+WINDOW_WIDTH = 800
+WINDOW_HEIGHT = 500
+
+class Gui < Gosu::Window
+  def initialize
+    super WINDOW_WIDTH, WINDOW_HEIGHT
+    self.caption = 'ruby teeworlds client'
+    @client = TeeworldsClient.new
+    @client.connect('localhost', 8303, detach: true)
+    @tees = {}
+  end
+
+  def update
+    @client.on_snapshot do |_, snap|
+      snap.items.each do |item|
+        next unless item.instance_of?(NetObj::Character)
+
+        player = item.to_h
+        @tees[player[:id]] = Tee.new(player)
+      end
+    end
+  end
+
+  def center_around_tee(tee)
+    wc = WINDOW_WIDTH / 2
+    hc = WINDOW_HEIGHT / 2
+    x = -tee.x + wc
+    y = -tee.y + hc
+    Entitiy.new(x:, y:)
+  end
+
+  def draw
+    return if @tees.empty?
+
+    offset = center_around_tee(@tees.first.last)
+    @tees.each do |_id, tee|
+      draw_rect(
+        tee.x + offset.x,
+        tee.y + offset.y,
+        tee.w,
+        tee.h,
+        Gosu::Color.argb(0xff_00ff00)
+      )
+    end
+  end
+end
+
+Gui.new.show

lib/game_client.rb

@@ -155,11 +155,15 @@ class GameClient
 
   def on_snapshot(chunk)
     u = SnapshotUnpacker.new
-    game_tick = u.snap_single(chunk)
-    return if game_tick.nil?
+    snapshot = u.snap_single(chunk)
+
+    return if snapshot.game_tick.nil?
+
+    context = Context.new(nil, chunk:)
+    return if call_hook(:snapshot, context, snapshot).nil?
 
     # ack every snapshot no matter how broken
-    @ack_game_tick = game_tick
+    @ack_game_tick = snapshot.game_tick
     return unless (@pred_game_tick - @ack_game_tick).abs > 10
 
     @pred_game_tick = @ack_game_tick + 1

lib/snapshot/snap_item_base.rb

@@ -63,6 +63,7 @@ class SnapItemBase
 
   def to_h
     hash = {}
+    hash[:id] = @id
     @field_names.each_with_index do |name, index|
       hash[name] = @fields[index]
     end

lib/snapshot/unpacker.rb

@@ -20,6 +20,14 @@ require_relative 'events/death'
 require_relative 'events/hammer_hit'
 require_relative '../packer'
 
+class Snapshot
+  attr_accessor :game_tick, :items
+
+  def initialize(items)
+    @items = items
+  end
+end
+
 class SnapshotUnpacker
   def snap_single(chunk)
     u = Unpacker.new(chunk.data)
@@ -104,6 +112,7 @@ class SnapshotUnpacker
     invalid = false
     item_type = u.get_int
     id_parsed = u.parsed.last
+    snap_items = []
     while item_type
       obj = nil
       if NetObj::PlayerInput.match_type?(item_type)
@@ -146,6 +155,7 @@ class SnapshotUnpacker
         puts "no match #{item_type}"
       end
       if obj
+        snap_items.push(obj)
         notes += obj.notes
         notes.push([
                      :green,
@@ -166,12 +176,14 @@ class SnapshotUnpacker
       id_parsed = u.parsed.last
     end
 
-    hexdump_lines(data.pack('C*'), 1, notes, legend: :inline).each do |hex|
-      puts "  #{hex}"
-    end
+    # hexdump_lines(data.pack('C*'), 1, notes, legend: :inline).each do |hex|
+    #   puts "  #{hex}"
+    # end
 
     exit 1 if invalid
 
-    game_tick
+    snapshot = Snapshot.new(snap_items)
+    snapshot.game_tick = game_tick
+    snapshot
   end
 end