Download as PDF, PPTX
![Player:
def initialize(window)
@image = Image.new window, "plane.png", false
end
def draw
@image.draw_rot(@x, @y, 1, @angle)
end
GameWindow:
@spritesheet = Image.load_tiles(self, 'sprites.png', 32, 32,
true)
Player:
@window.spritesheet[SpriteImage::Tank].draw_rot(@x, @y, 1,
@angle)
Sunday, 9 June, 13](https://image.slidesharecdn.com/playingruby-130609072112-phpapp01/75/Playing-With-Ruby-43-2048.jpg)
![.....................
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..##............##...
...#............#....
...#............#....
...#............#....
..##............##...
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20 x 32 = 640
15x32=480 class Map
def initialize(window, mapfile)
lines = File.readlines(mapfile).map
{ |line| line.chomp }
@window, @height, @width = window,
lines.size, lines.first.size
@tiles = Array.new(@width) do |x|
Array.new(@height) do |y|
case lines[y][x]
when '.'
SpriteImage::Earth
when "#"
SpriteImage::Wall
when '"'
SpriteImage::Grass
end
end
end
end
def draw
@height.times do |y|
@width.times do |x|
tile = @tiles[x][y]
@window.spritesheet[tile].draw(x *
32, y * 32, 1)
end
end
Sunday, 9 June, 13](https://image.slidesharecdn.com/playingruby-130609072112-phpapp01/75/Playing-With-Ruby-46-2048.jpg)
![if msg = @client.read_message
@valid_sprites.clear
data = msg.split("n")
data.each do |row|
sprite = row.split("|")
if sprite.size == 9
player = sprite[3]
@valid_sprites << sprite[0]
case sprite[1]
when 'tank'
unless player == @player
if @other_tanks[player]
@other_tanks[player].points = sprite[7].to_i
@other_tanks[player].warp_to(sprite[4], sprite[5], sprite[6])
else
@other_tanks[player] = Tank.from_sprite(self, sprite)
end
else
@me.points = sprite[7].to_i
end
when 'shot'
unless player == @player
shot = Shot.from_sprite(self, sprite)
@other_shots[shot.uuid] = shot
shot.warp_to(sprite[4], sprite[5], sprite[6])
end
end
end
end
Sunday, 9 June, 13](https://image.slidesharecdn.com/playingruby-130609072112-phpapp01/75/Playing-With-Ruby-84-2048.jpg)
![if msg = @client.read_message
@valid_sprites.clear
data = msg.split("n")
data.each do |row|
sprite = row.split("|")
if sprite.size == 9
player = sprite[3]
@valid_sprites << sprite[0]
case sprite[1]
when 'tank'
unless player == @player
if @other_tanks[player]
@other_tanks[player].points = sprite[7].to_i
@other_tanks[player].warp_to(sprite[4], sprite[5], sprite[6])
else
@other_tanks[player] = Tank.from_sprite(self, sprite)
end
else
@me.points = sprite[7].to_i
end
when 'shot'
unless player == @player
shot = Shot.from_sprite(self, sprite)
@other_shots[shot.uuid] = shot
shot.warp_to(sprite[4], sprite[5], sprite[6])
end
end
end
end
read messages from the server
Sunday, 9 June, 13](https://image.slidesharecdn.com/playingruby-130609072112-phpapp01/75/Playing-With-Ruby-85-2048.jpg)
![if msg = @client.read_message
@valid_sprites.clear
data = msg.split("n")
data.each do |row|
sprite = row.split("|")
if sprite.size == 9
player = sprite[3]
@valid_sprites << sprite[0]
case sprite[1]
when 'tank'
unless player == @player
if @other_tanks[player]
@other_tanks[player].points = sprite[7].to_i
@other_tanks[player].warp_to(sprite[4], sprite[5], sprite[6])
else
@other_tanks[player] = Tank.from_sprite(self, sprite)
end
else
@me.points = sprite[7].to_i
end
when 'shot'
unless player == @player
shot = Shot.from_sprite(self, sprite)
@other_shots[shot.uuid] = shot
shot.warp_to(sprite[4], sprite[5], sprite[6])
end
end
end
end
parse the server messages into
sprites
Sunday, 9 June, 13](https://image.slidesharecdn.com/playingruby-130609072112-phpapp01/75/Playing-With-Ruby-86-2048.jpg)
![if msg = @client.read_message
@valid_sprites.clear
data = msg.split("n")
data.each do |row|
sprite = row.split("|")
if sprite.size == 9
player = sprite[3]
@valid_sprites << sprite[0]
case sprite[1]
when 'tank'
unless player == @player
if @other_tanks[player]
@other_tanks[player].points = sprite[7].to_i
@other_tanks[player].warp_to(sprite[4], sprite[5], sprite[6])
else
@other_tanks[player] = Tank.from_sprite(self, sprite)
end
else
@me.points = sprite[7].to_i
end
when 'shot'
unless player == @player
shot = Shot.from_sprite(self, sprite)
@other_shots[shot.uuid] = shot
shot.warp_to(sprite[4], sprite[5], sprite[6])
end
end
end
end
for tank sprites other than me,
set the properties and move it
Sunday, 9 June, 13](https://image.slidesharecdn.com/playingruby-130609072112-phpapp01/75/Playing-With-Ruby-87-2048.jpg)
![if msg = @client.read_message
@valid_sprites.clear
data = msg.split("n")
data.each do |row|
sprite = row.split("|")
if sprite.size == 9
player = sprite[3]
@valid_sprites << sprite[0]
case sprite[1]
when 'tank'
unless player == @player
if @other_tanks[player]
@other_tanks[player].points = sprite[7].to_i
@other_tanks[player].warp_to(sprite[4], sprite[5], sprite[6])
else
@other_tanks[player] = Tank.from_sprite(self, sprite)
end
else
@me.points = sprite[7].to_i
end
when 'shot'
unless player == @player
shot = Shot.from_sprite(self, sprite)
@other_shots[shot.uuid] = shot
shot.warp_to(sprite[4], sprite[5], sprite[6])
end
end
end
end
only time the server tells
me about my changes is
when I’m hit
Sunday, 9 June, 13](https://image.slidesharecdn.com/playingruby-130609072112-phpapp01/75/Playing-With-Ruby-88-2048.jpg)
![if msg = @client.read_message
@valid_sprites.clear
data = msg.split("n")
data.each do |row|
sprite = row.split("|")
if sprite.size == 9
player = sprite[3]
@valid_sprites << sprite[0]
case sprite[1]
when 'tank'
unless player == @player
if @other_tanks[player]
@other_tanks[player].points = sprite[7].to_i
@other_tanks[player].warp_to(sprite[4], sprite[5], sprite[6])
else
@other_tanks[player] = Tank.from_sprite(self, sprite)
end
else
@me.points = sprite[7].to_i
end
when 'shot'
unless player == @player
shot = Shot.from_sprite(self, sprite)
@other_shots[shot.uuid] = shot
shot.warp_to(sprite[4], sprite[5], sprite[6])
end
end
end
end
move the shot
sprites
Sunday, 9 June, 13](https://image.slidesharecdn.com/playingruby-130609072112-phpapp01/75/Playing-With-Ruby-89-2048.jpg)
![if msg = @client.read_message
@valid_sprites.clear
data = msg.split("n")
data.each do |row|
sprite = row.split("|")
if sprite.size == 9
player = sprite[3]
@valid_sprites << sprite[0]
case sprite[1]
when 'tank'
unless player == @player
if @other_tanks[player]
@other_tanks[player].points = sprite[7].to_i
@other_tanks[player].warp_to(sprite[4], sprite[5], sprite[6])
else
@other_tanks[player] = Tank.from_sprite(self, sprite)
end
else
@me.points = sprite[7].to_i
end
when 'shot'
unless player == @player
shot = Shot.from_sprite(self, sprite)
@other_shots[shot.uuid] = shot
shot.warp_to(sprite[4], sprite[5], sprite[6])
end
end
end
end
Sunday, 9 June, 13](https://image.slidesharecdn.com/playingruby-130609072112-phpapp01/75/Playing-With-Ruby-90-2048.jpg)
![def handle_connection(socket)
_, port, host = socket.peeraddr
user = "#{host}:#{port}"
puts "#{user} has joined the arena."
loop do
data = socket.readpartial(4096)
data_array = data.split("n")
if data_array and !data_array.empty?
begin
data_array.each do |row|
message = row.split("|")
if message.size == 10
case message[0]
when 'obj'
@players[user] = message[1..9] unless @players[user]
@sprites[message[1]] = message[1..9]
when 'del'
@sprites.delete message[1]
end
end
.
.
.
Sunday, 9 June, 13](https://image.slidesharecdn.com/playingruby-130609072112-phpapp01/75/Playing-With-Ruby-102-2048.jpg)
![def handle_connection(socket)
_, port, host = socket.peeraddr
user = "#{host}:#{port}"
puts "#{user} has joined the arena."
loop do
data = socket.readpartial(4096)
data_array = data.split("n")
if data_array and !data_array.empty?
begin
data_array.each do |row|
message = row.split("|")
if message.size == 10
case message[0]
when 'obj'
@players[user] = message[1..9] unless @players[user]
@sprites[message[1]] = message[1..9]
when 'del'
@sprites.delete message[1]
end
end
.
.
.
Uniquely
identifies a user
Sunday, 9 June, 13](https://image.slidesharecdn.com/playingruby-130609072112-phpapp01/75/Playing-With-Ruby-103-2048.jpg)
![def handle_connection(socket)
_, port, host = socket.peeraddr
user = "#{host}:#{port}"
puts "#{user} has joined the arena."
loop do
data = socket.readpartial(4096)
data_array = data.split("n")
if data_array and !data_array.empty?
begin
data_array.each do |row|
message = row.split("|")
if message.size == 10
case message[0]
when 'obj'
@players[user] = message[1..9] unless @players[user]
@sprites[message[1]] = message[1..9]
when 'del'
@sprites.delete message[1]
end
end
.
.
.
Get data from
the client
Sunday, 9 June, 13](https://image.slidesharecdn.com/playingruby-130609072112-phpapp01/75/Playing-With-Ruby-104-2048.jpg)
![def handle_connection(socket)
_, port, host = socket.peeraddr
user = "#{host}:#{port}"
puts "#{user} has joined the arena."
loop do
data = socket.readpartial(4096)
data_array = data.split("n")
if data_array and !data_array.empty?
begin
data_array.each do |row|
message = row.split("|")
if message.size == 10
case message[0]
when 'obj'
@players[user] = message[1..9] unless @players[user]
@sprites[message[1]] = message[1..9]
when 'del'
@sprites.delete message[1]
end
end
.
.
.
Add to list of players
if player is new
Sunday, 9 June, 13](https://image.slidesharecdn.com/playingruby-130609072112-phpapp01/75/Playing-With-Ruby-105-2048.jpg)
![def handle_connection(socket)
_, port, host = socket.peeraddr
user = "#{host}:#{port}"
puts "#{user} has joined the arena."
loop do
data = socket.readpartial(4096)
data_array = data.split("n")
if data_array and !data_array.empty?
begin
data_array.each do |row|
message = row.split("|")
if message.size == 10
case message[0]
when 'obj'
@players[user] = message[1..9] unless @players[user]
@sprites[message[1]] = message[1..9]
when 'del'
@sprites.delete message[1]
end
end
.
.
.
Add to list of
sprites in
this server
Sunday, 9 June, 13](https://image.slidesharecdn.com/playingruby-130609072112-phpapp01/75/Playing-With-Ruby-106-2048.jpg)
![def handle_connection(socket)
_, port, host = socket.peeraddr
user = "#{host}:#{port}"
puts "#{user} has joined the arena."
loop do
data = socket.readpartial(4096)
data_array = data.split("n")
if data_array and !data_array.empty?
begin
data_array.each do |row|
message = row.split("|")
if message.size == 10
case message[0]
when 'obj'
@players[user] = message[1..9] unless @players[user]
@sprites[message[1]] = message[1..9]
when 'del'
@sprites.delete message[1]
end
end
.
.
.
Remove sprite
from this server
Sunday, 9 June, 13](https://image.slidesharecdn.com/playingruby-130609072112-phpapp01/75/Playing-With-Ruby-107-2048.jpg)
![.
.
.
response = String.new
@sprites.each_value do |sprite|
(response << sprite.join("|") << "n") if sprite
end
socket.write response
end
rescue Exception => exception
puts exception.backtrace
end
end # end data
end # end loop
rescue EOFError => err
player = @players[user]
puts "#{player[3]} has left arena."
@sprites.delete player[0]
@players.delete user
socket.close
end
end
Sunday, 9 June, 13](https://image.slidesharecdn.com/playingruby-130609072112-phpapp01/75/Playing-With-Ruby-108-2048.jpg)
![.
.
.
response = String.new
@sprites.each_value do |sprite|
(response << sprite.join("|") << "n") if sprite
end
socket.write response
end
rescue Exception => exception
puts exception.backtrace
end
end # end data
end # end loop
rescue EOFError => err
player = @players[user]
puts "#{player[3]} has left arena."
@sprites.delete player[0]
@players.delete user
socket.close
end
end
Send list of sprites
to the client
Sunday, 9 June, 13](https://image.slidesharecdn.com/playingruby-130609072112-phpapp01/75/Playing-With-Ruby-109-2048.jpg)
![.
.
.
response = String.new
@sprites.each_value do |sprite|
(response << sprite.join("|") << "n") if sprite
end
socket.write response
end
rescue Exception => exception
puts exception.backtrace
end
end # end data
end # end loop
rescue EOFError => err
player = @players[user]
puts "#{player[3]} has left arena."
@sprites.delete player[0]
@players.delete user
socket.close
end
end
If client disconnects,
remove the player
and sprite
Sunday, 9 June, 13](https://image.slidesharecdn.com/playingruby-130609072112-phpapp01/75/Playing-With-Ruby-110-2048.jpg)
![server, port = ARGV[0] || "0.0.0.0", ARGV[1] || 1234
supervisor = Arena.supervise(server, port.to_i)
trap("INT") do
supervisor.terminate
exit
end
sleep
Sunday, 9 June, 13](https://image.slidesharecdn.com/playingruby-130609072112-phpapp01/75/Playing-With-Ruby-111-2048.jpg)
![server, port = ARGV[0] || "0.0.0.0", ARGV[1] || 1234
supervisor = Arena.supervise(server, port.to_i)
trap("INT") do
supervisor.terminate
exit
end
sleep
Monitors and restarts
the server if it crashes
Sunday, 9 June, 13](https://image.slidesharecdn.com/playingruby-130609072112-phpapp01/75/Playing-With-Ruby-112-2048.jpg)
![server, port = ARGV[0] || "0.0.0.0", ARGV[1] || 1234
supervisor = Arena.supervise(server, port.to_i)
trap("INT") do
supervisor.terminate
exit
end
sleep
Nothing for the main
thread to do so, sleep and
let the other threads run
Sunday, 9 June, 13](https://image.slidesharecdn.com/playingruby-130609072112-phpapp01/75/Playing-With-Ruby-113-2048.jpg)
![configure do
@@port_range = (10000..11000).to_a
end
get "/" do
@arenas = Celluloid::Actor.all
haml :arenas
end
post "/arena/start" do
port = @@port_range.delete @@port_range.sample
arena = Arena.new(request.host, port, request.port)
arena.map_url = params[:map_url]
arena.spritesheet_url = params[:spritesheet_url]
arena.default_hp = params[:default_hp].to_i
Celluloid::Actor[:"arena_#{port}"] = arena
redirect "/"
end
get "/arena/stop/:name" do
raise "No such arena" unless Celluloid::Actor[params[:name].to_sym]
Celluloid::Actor[params[:name].to_sym].terminate
redirect "/"
end
get "/config/:name" do
arena = Celluloid::Actor[params[:name].to_sym]
array = [arena.map_url, arena.spritesheet_url,
arena.default_hp.to_s].join("|")
end
Sunday, 9 June, 13](https://image.slidesharecdn.com/playingruby-130609072112-phpapp01/75/Playing-With-Ruby-120-2048.jpg)
![configure do
@@port_range = (10000..11000).to_a
end
get "/" do
@arenas = Celluloid::Actor.all
haml :arenas
end
post "/arena/start" do
port = @@port_range.delete @@port_range.sample
arena = Arena.new(request.host, port, request.port)
arena.map_url = params[:map_url]
arena.spritesheet_url = params[:spritesheet_url]
arena.default_hp = params[:default_hp].to_i
Celluloid::Actor[:"arena_#{port}"] = arena
redirect "/"
end
get "/arena/stop/:name" do
raise "No such arena" unless Celluloid::Actor[params[:name].to_sym]
Celluloid::Actor[params[:name].to_sym].terminate
redirect "/"
end
get "/config/:name" do
arena = Celluloid::Actor[params[:name].to_sym]
array = [arena.map_url, arena.spritesheet_url,
arena.default_hp.to_s].join("|")
end
Start server at
any of these ports
Sunday, 9 June, 13](https://image.slidesharecdn.com/playingruby-130609072112-phpapp01/75/Playing-With-Ruby-121-2048.jpg)
![configure do
@@port_range = (10000..11000).to_a
end
get "/" do
@arenas = Celluloid::Actor.all
haml :arenas
end
post "/arena/start" do
port = @@port_range.delete @@port_range.sample
arena = Arena.new(request.host, port, request.port)
arena.map_url = params[:map_url]
arena.spritesheet_url = params[:spritesheet_url]
arena.default_hp = params[:default_hp].to_i
Celluloid::Actor[:"arena_#{port}"] = arena
redirect "/"
end
get "/arena/stop/:name" do
raise "No such arena" unless Celluloid::Actor[params[:name].to_sym]
Celluloid::Actor[params[:name].to_sym].terminate
redirect "/"
end
get "/config/:name" do
arena = Celluloid::Actor[params[:name].to_sym]
array = [arena.map_url, arena.spritesheet_url,
arena.default_hp.to_s].join("|")
end
Registry of all arenas
Sunday, 9 June, 13](https://image.slidesharecdn.com/playingruby-130609072112-phpapp01/75/Playing-With-Ruby-122-2048.jpg)
![configure do
@@port_range = (10000..11000).to_a
end
get "/" do
@arenas = Celluloid::Actor.all
haml :arenas
end
post "/arena/start" do
port = @@port_range.delete @@port_range.sample
arena = Arena.new(request.host, port, request.port)
arena.map_url = params[:map_url]
arena.spritesheet_url = params[:spritesheet_url]
arena.default_hp = params[:default_hp].to_i
Celluloid::Actor[:"arena_#{port}"] = arena
redirect "/"
end
get "/arena/stop/:name" do
raise "No such arena" unless Celluloid::Actor[params[:name].to_sym]
Celluloid::Actor[params[:name].to_sym].terminate
redirect "/"
end
get "/config/:name" do
arena = Celluloid::Actor[params[:name].to_sym]
array = [arena.map_url, arena.spritesheet_url,
arena.default_hp.to_s].join("|")
end
Start arena
Sunday, 9 June, 13](https://image.slidesharecdn.com/playingruby-130609072112-phpapp01/75/Playing-With-Ruby-123-2048.jpg)
![configure do
@@port_range = (10000..11000).to_a
end
get "/" do
@arenas = Celluloid::Actor.all
haml :arenas
end
post "/arena/start" do
port = @@port_range.delete @@port_range.sample
arena = Arena.new(request.host, port, request.port)
arena.map_url = params[:map_url]
arena.spritesheet_url = params[:spritesheet_url]
arena.default_hp = params[:default_hp].to_i
Celluloid::Actor[:"arena_#{port}"] = arena
redirect "/"
end
get "/arena/stop/:name" do
raise "No such arena" unless Celluloid::Actor[params[:name].to_sym]
Celluloid::Actor[params[:name].to_sym].terminate
redirect "/"
end
get "/config/:name" do
arena = Celluloid::Actor[params[:name].to_sym]
array = [arena.map_url, arena.spritesheet_url,
arena.default_hp.to_s].join("|")
end
Register arena
Sunday, 9 June, 13](https://image.slidesharecdn.com/playingruby-130609072112-phpapp01/75/Playing-With-Ruby-124-2048.jpg)
![configure do
@@port_range = (10000..11000).to_a
end
get "/" do
@arenas = Celluloid::Actor.all
haml :arenas
end
post "/arena/start" do
port = @@port_range.delete @@port_range.sample
arena = Arena.new(request.host, port, request.port)
arena.map_url = params[:map_url]
arena.spritesheet_url = params[:spritesheet_url]
arena.default_hp = params[:default_hp].to_i
Celluloid::Actor[:"arena_#{port}"] = arena
redirect "/"
end
get "/arena/stop/:name" do
raise "No such arena" unless Celluloid::Actor[params[:name].to_sym]
Celluloid::Actor[params[:name].to_sym].terminate
redirect "/"
end
get "/config/:name" do
arena = Celluloid::Actor[params[:name].to_sym]
array = [arena.map_url, arena.spritesheet_url,
arena.default_hp.to_s].join("|")
end
Terminate arena
Sunday, 9 June, 13](https://image.slidesharecdn.com/playingruby-130609072112-phpapp01/75/Playing-With-Ruby-125-2048.jpg)
![configure do
@@port_range = (10000..11000).to_a
end
get "/" do
@arenas = Celluloid::Actor.all
haml :arenas
end
post "/arena/start" do
port = @@port_range.delete @@port_range.sample
arena = Arena.new(request.host, port, request.port)
arena.map_url = params[:map_url]
arena.spritesheet_url = params[:spritesheet_url]
arena.default_hp = params[:default_hp].to_i
Celluloid::Actor[:"arena_#{port}"] = arena
redirect "/"
end
get "/arena/stop/:name" do
raise "No such arena" unless Celluloid::Actor[params[:name].to_sym]
Celluloid::Actor[params[:name].to_sym].terminate
redirect "/"
end
get "/config/:name" do
arena = Celluloid::Actor[params[:name].to_sym]
array = [arena.map_url, arena.spritesheet_url,
arena.default_hp.to_s].join("|")
end
Let client know
about the
customizations
Sunday, 9 June, 13](https://image.slidesharecdn.com/playingruby-130609072112-phpapp01/75/Playing-With-Ruby-126-2048.jpg)
![configure do
@@port_range = (10000..11000).to_a
end
get "/" do
@arenas = Celluloid::Actor.all
haml :arenas
end
post "/arena/start" do
port = @@port_range.delete @@port_range.sample
arena = Arena.new(request.host, port, request.port)
arena.map_url = params[:map_url]
arena.spritesheet_url = params[:spritesheet_url]
arena.default_hp = params[:default_hp].to_i
Celluloid::Actor[:"arena_#{port}"] = arena
redirect "/"
end
get "/arena/stop/:name" do
raise "No such arena" unless Celluloid::Actor[params[:name].to_sym]
Celluloid::Actor[params[:name].to_sym].terminate
redirect "/"
end
get "/config/:name" do
arena = Celluloid::Actor[params[:name].to_sym]
array = [arena.map_url, arena.spritesheet_url,
arena.default_hp.to_s].join("|")
end
Sunday, 9 June, 13](https://image.slidesharecdn.com/playingruby-130609072112-phpapp01/75/Playing-With-Ruby-127-2048.jpg)
Uploaded bySau Sheong Chang
Playing With Ruby
The document is a tutorial on creating an online, real-time multiplayer game using Ruby and the Gosu library. It covers the fundamental aspects of game development, such as drawing windows, player movements, adding sound, using sprite sheets, and implementing a client-server architecture for game logic. The tutorial aims to guide developers through the process of building a game with features like editable maps and real-time interactions among players.
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Playing With Ruby
- 1. Playing with Ruby Howto write an online, real-time multi-player game with Ruby @sausheong Sunday, 9 June, 13
- 2. About me Sunday, 9June, 13
- 3. About me Sunday, 9June, 13
- 4. About me Sunday, 9June, 13
- 5. About me Sunday, 9June, 13
- 6. About me Sunday, 9June, 13
- 7. About me Sunday, 9June, 13
- 8. About me Sunday, 9June, 13
- 9. About me Sunday, 9June, 13
- 10. About me Sunday, 9June, 13
- 11. About me Sunday, 9June, 13
- 12. Press start Sunday, 9June, 13
- 13.
- 14. 2D game developmentlibrary C++-based, with Ruby wrapper OS X, Windows and Linux Works with MRI, MacRuby, Rubinius (but not JRuby) Sunday, 9 June, 13
- 15. Draw the game window Sunday,9 June, 13
- 16. require 'gosu' class GameWindow< Gosu::Window def initialize super 640, 480, false self.caption = "Tutorial 1" end def update end def draw end end window = GameWindow.new window.show Sunday, 9 June, 13
- 17.
- 18. update method called atevery frame (60 frames per second) Contains game logic The main ‘controller’ of the game Sunday, 9 June, 13
- 19. draw method Does theactual drawing of the game window Called after update Can also be called when necessary Sunday, 9 June, 13
- 20. Add background Sunday, 9June, 13
- 21. require 'gosu' class GameWindow< Gosu::Window def initialize super 640, 480, false self.caption = "Tutorial 2" @background_image = Gosu::Image.new(self, "bg1.jpg", true) end def update end def draw @background_image.draw(0, 0, 0) end end window = GameWindow.new window.show x y z Sunday, 9 June, 13
- 22.
- 23. Add a player Sunday,9 June, 13
- 24. class Player def initialize(window) @image= Image.new window, "plane.png", false @x = @y = @vel_x = @vel_y = @angle = 0.0 end def warp(x, y) @x, @y = x, y end def turn_left @angle -= 5 end def turn_right @angle += 5 end def accelerate @vel_x += offset_x(@angle, 5) @vel_y += offset_y(@angle, 5) end def move @x += @vel_x @y += @vel_y @x %= 640 @y %= 480 @vel_x, @vel_y = 0, 0 end def draw @image.draw_rot(@x, @y, 1, @angle) end end @angle 5 offset_y offset_x Sunday, 9 June, 13
- 25. class GameWindow <Window def initialize super(640, 480, false) self.caption = "Tutorial 3" @background_image = Image.new(self, "bg1.jpg", true) @player = Player.new(self) @player.warp(320, 240) end def update @player.turn_left if button_down? KbLeft @player.turn_right if button_down? KbRight @player.accelerate if button_down? KbUp @player.move end def draw @player.draw @background_image.draw(0, 0, 0) end end Sunday, 9 June, 13
- 26. class GameWindow <Window def initialize super(640, 480, false) self.caption = "Tutorial 3" @background_image = Image.new(self, "bg1.jpg", true) @player = Player.new(self) @player.warp(320, 240) end def update @player.turn_left if button_down? KbLeft @player.turn_right if button_down? KbRight @player.accelerate if button_down? KbUp @player.move end def draw @player.draw @background_image.draw(0, 0, 0) end end create player Sunday, 9 June, 13
- 27. class GameWindow <Window def initialize super(640, 480, false) self.caption = "Tutorial 3" @background_image = Image.new(self, "bg1.jpg", true) @player = Player.new(self) @player.warp(320, 240) end def update @player.turn_left if button_down? KbLeft @player.turn_right if button_down? KbRight @player.accelerate if button_down? KbUp @player.move end def draw @player.draw @background_image.draw(0, 0, 0) end end place him in middle of screen Sunday, 9 June, 13
- 28. class GameWindow <Window def initialize super(640, 480, false) self.caption = "Tutorial 3" @background_image = Image.new(self, "bg1.jpg", true) @player = Player.new(self) @player.warp(320, 240) end def update @player.turn_left if button_down? KbLeft @player.turn_right if button_down? KbRight @player.accelerate if button_down? KbUp @player.move end def draw @player.draw @background_image.draw(0, 0, 0) end end } move according to user input Sunday, 9 June, 13
- 29. class GameWindow <Window def initialize super(640, 480, false) self.caption = "Tutorial 3" @background_image = Image.new(self, "bg1.jpg", true) @player = Player.new(self) @player.warp(320, 240) end def update @player.turn_left if button_down? KbLeft @player.turn_right if button_down? KbRight @player.accelerate if button_down? KbUp @player.move end def draw @player.draw @background_image.draw(0, 0, 0) end end draw the player Sunday, 9 June, 13
- 30.
- 31. Add sound Sunday, 9June, 13
- 32. def initialize(window) @image =Image.new window, "plane.png", false @sound = Sample.new window, "plane.wav" @x = @y = @vel_x = @vel_y = @angle = 0.0 end . . . def accelerate @sound.play @vel_x += offset_x(@angle, 5) @vel_y += offset_y(@angle, 5) end Sunday, 9 June, 13
- 33. def initialize(window) @image =Image.new window, "plane.png", false @sound = Sample.new window, "plane.wav" @x = @y = @vel_x = @vel_y = @angle = 0.0 end . . . def accelerate @sound.play @vel_x += offset_x(@angle, 5) @vel_y += offset_y(@angle, 5) end Load the sound Sunday, 9 June, 13
- 34. def initialize(window) @image =Image.new window, "plane.png", false @sound = Sample.new window, "plane.wav" @x = @y = @vel_x = @vel_y = @angle = 0.0 end . . . def accelerate @sound.play @vel_x += offset_x(@angle, 5) @vel_y += offset_y(@angle, 5) end play the sound! Sunday, 9 June, 13
- 35.
- 36. Level 1 Complete! Sunday, 9June, 13
- 37. Use sprite sheets Sunday,9 June, 13
- 38. Sprites An image oranimation that’s overlaid on the background Use single sprites (as before) or use sprite sheets Sprites normally represented by a square image Sunday, 9 June, 13
- 39. Sprite sheet A bunchof images in a single file, used as sprites Often placed in sequence, image can be retrieved from knowing the location Reduces memory usage and increase drawing speed Sunday, 9 June, 13
- 40.
- 41. 5948 25 26 2728 29 30 31 32 33 34 35 36 37 38 3924 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 230 72 100 101 10296 Sunday, 9 June, 13
- 42. module SpriteImage Grass =102 Earth = 101 Gravel = 100 Wall = 59 Bullet= 28 Tank = 39 end Locate sprites in a sprite sheet Sunday, 9 June, 13
- 43. Player: def initialize(window) @image =Image.new window, "plane.png", false end def draw @image.draw_rot(@x, @y, 1, @angle) end GameWindow: @spritesheet = Image.load_tiles(self, 'sprites.png', 32, 32, true) Player: @window.spritesheet[SpriteImage::Tank].draw_rot(@x, @y, 1, @angle) Sunday, 9 June, 13
- 44. Create editable maps Sunday,9 June, 13
- 45. Editable maps Allows userto customize maps and backgrounds, using tiled sprites ..................... ..................... ..................... ..................... ..................... ..##............##... ...#............#.... ...#............#.... ...#............#.... ..##............##... ..................... ..................... ..................... ..................... ..................... Sunday, 9 June, 13
- 46. ..................... ..................... ..................... ..................... ..................... ..##............##... ...#............#.... ...#............#.... ...#............#.... ..##............##... ..................... ..................... ..................... ..................... ..................... 20 x 32= 640 15x32=480 class Map def initialize(window, mapfile) lines = File.readlines(mapfile).map { |line| line.chomp } @window, @height, @width = window, lines.size, lines.first.size @tiles = Array.new(@width) do |x| Array.new(@height) do |y| case lines[y][x] when '.' SpriteImage::Earth when "#" SpriteImage::Wall when '"' SpriteImage::Grass end end end end def draw @height.times do |y| @width.times do |x| tile = @tiles[x][y] @window.spritesheet[tile].draw(x * 32, y * 32, 1) end end Sunday, 9 June, 13
- 47. Level 2 Complete! Sunday, 9June, 13
- 48. Let’s play with others Sunday,9 June, 13
- 49.
- 50. Design Real-time vs turn-based(immediate response) Latency (speed) is critical ‘Dead’ players can still observe the game Game spectators Sunday, 9 June, 13
- 51. Design Client-server All artifacts arelocal Only messages sent back and forth the client-server Minimal size messages Messages sent from client -> server once every frame refresh Sunday, 9 June, 13
- 52. Design Server should haveminimal processing, all game logic should be in the client Server should only receive messages and broadcast to all clients Messages not compressed/encoded (takes time at the server) Don’t send useless messages Sunday, 9 June, 13
- 53. Game flow Sunday, 9June, 13
- 54. Game server starts Game Server Sunday,9 June, 13
- 55. Tank 1 starts,sends message to server Game Server Tank1 object:tank1 object:tank1 Tank 1 ignores messages that is about itself Sunday, 9 June, 13
- 56. Server simply storesand broadcasts all messages sent to it to reduce processing Logic to process or ignore messages are in the client Sunday, 9 June, 13
- 57. Tank 2 starts Game Server Tank1 object:tank1 object:tank1 Tank2 object:tank2 object:tank1 object:tank2 object:tank2 Tank1 receives messages from server about Tank 2, starts drawing Tank 2 Sunday, 9 June, 13
- 58. Tank 2 moves Game Server Tank1 object:tank1 object:tank1 Tank2 object:tank2 object:tank1 object:tank2 object:tank2 WhenTank 2 moves, its position is sent to the server and broadcast to everyone Sunday, 9 June, 13
- 59. Tank 1 shoots Game Server Tank1 object:tank1 object:tank1 Tank2 object:tank2 object:tank1 object:tank2 object:tank2 object:shot1 object:shot1 object:shot1 Tank1 creates a shot, message sent to server and broadcast to everyone Sunday, 9 June, 13
- 60. Shot goes outof range Game Server Tank1 object:tank1 object:tank1 Tank2 object:tank2 object:tank1 object:tank2 object:tank2 delete:shot1 delete:shot1 delete:shot1 When the shot goes out of range, Tank 1 sends a delete message to the server, broadcasted to everyone Sunday, 9 June, 13
- 61. Tank 1 shothits Tank 2 Game Server Tank1 object:tank1 object:tank1 Tank2 object:tank2 object:tank1 object:tank2 object:tank2 object:shot1 object:shot1 object:shot1 If Tank 1’s shot hits Tank 2, reduce hit points from Tank1 Sunday, 9 June, 13
- 62. Tank 2 destroyed Game Server Tank1 object:tank1 object:tank1 Tank2 object:tank1 object:shot1 object:shot1 object:shot1 WhenTank 2’s hit points fall below 0 it is destroyed Sunday, 9 June, 13
- 63. Message passing Sunday, 9June, 13
- 64. Messages are stringdelimited with vertical bar (|) Messages are accumulated till and sent only 1 time in a frame refresh Messages from client -> server : message type + sprite Message from server -> client : sprite only Sunday, 9 June, 13
- 65.
- 66.
- 67.
- 68.
- 69.
- 70.
- 71. Game Client Sunday, 9June, 13
- 72. Client sends messages tothe server Sunday, 9 June, 13
- 73. def update begin move_tank px, py= @me.x, @me.y @me.move @me.warp_to(px, py) if @me.hit_wall? or @me.outside_battlefield? @other_tanks.each do |player, tank| @me.warp_to(px, py) if tank.alive? and @me.collide_with?(tank, 30) end add_to_message_queue('obj', @me) @other_shots.each_value do |shot| if @me.alive? and @me.collide_with?(shot, 16) @me.hit add_to_message_queue('obj', @me) end end @me_shots.each do |shot| shot.move # move the bullet if shot.hit_wall? or shot.outside_battlefield? @me_shots.delete shot add_to_message_queue('del', shot) else add_to_message_queue('obj', shot) end end @client.send_message @messages.join("n") @messages.clear Sunday, 9 June, 13
- 74. def update begin move_tank px, py= @me.x, @me.y @me.move @me.warp_to(px, py) if @me.hit_wall? or @me.outside_battlefield? @other_tanks.each do |player, tank| @me.warp_to(px, py) if tank.alive? and @me.collide_with?(tank, 30) end add_to_message_queue('obj', @me) @other_shots.each_value do |shot| if @me.alive? and @me.collide_with?(shot, 16) @me.hit add_to_message_queue('obj', @me) end end @me_shots.each do |shot| shot.move # move the bullet if shot.hit_wall? or shot.outside_battlefield? @me_shots.delete shot add_to_message_queue('del', shot) else add_to_message_queue('obj', shot) end end @client.send_message @messages.join("n") @messages.clear store my previous coordinates Sunday, 9 June, 13
- 75. def update begin move_tank px, py= @me.x, @me.y @me.move @me.warp_to(px, py) if @me.hit_wall? or @me.outside_battlefield? @other_tanks.each do |player, tank| @me.warp_to(px, py) if tank.alive? and @me.collide_with?(tank, 30) end add_to_message_queue('obj', @me) @other_shots.each_value do |shot| if @me.alive? and @me.collide_with?(shot, 16) @me.hit add_to_message_queue('obj', @me) end end @me_shots.each do |shot| shot.move # move the bullet if shot.hit_wall? or shot.outside_battlefield? @me_shots.delete shot add_to_message_queue('del', shot) else add_to_message_queue('obj', shot) end end @client.send_message @messages.join("n") @messages.clear move! Sunday, 9 June, 13
- 76. def update begin move_tank px, py= @me.x, @me.y @me.move @me.warp_to(px, py) if @me.hit_wall? or @me.outside_battlefield? @other_tanks.each do |player, tank| @me.warp_to(px, py) if tank.alive? and @me.collide_with?(tank, 30) end add_to_message_queue('obj', @me) @other_shots.each_value do |shot| if @me.alive? and @me.collide_with?(shot, 16) @me.hit add_to_message_queue('obj', @me) end end @me_shots.each do |shot| shot.move # move the bullet if shot.hit_wall? or shot.outside_battlefield? @me_shots.delete shot add_to_message_queue('del', shot) else add_to_message_queue('obj', shot) end end @client.send_message @messages.join("n") @messages.clear go back to previous coordinates if I hit the wall, go out or hit another tank Sunday, 9 June, 13
- 77. def update begin move_tank px, py= @me.x, @me.y @me.move @me.warp_to(px, py) if @me.hit_wall? or @me.outside_battlefield? @other_tanks.each do |player, tank| @me.warp_to(px, py) if tank.alive? and @me.collide_with?(tank, 30) end add_to_message_queue('obj', @me) @other_shots.each_value do |shot| if @me.alive? and @me.collide_with?(shot, 16) @me.hit add_to_message_queue('obj', @me) end end @me_shots.each do |shot| shot.move # move the bullet if shot.hit_wall? or shot.outside_battlefield? @me_shots.delete shot add_to_message_queue('del', shot) else add_to_message_queue('obj', shot) end end @client.send_message @messages.join("n") @messages.clear add me to the list of messages to send to server Sunday, 9 June, 13
- 78. def update begin move_tank px, py= @me.x, @me.y @me.move @me.warp_to(px, py) if @me.hit_wall? or @me.outside_battlefield? @other_tanks.each do |player, tank| @me.warp_to(px, py) if tank.alive? and @me.collide_with?(tank, 30) end add_to_message_queue('obj', @me) @other_shots.each_value do |shot| if @me.alive? and @me.collide_with?(shot, 16) @me.hit add_to_message_queue('obj', @me) end end @me_shots.each do |shot| shot.move # move the bullet if shot.hit_wall? or shot.outside_battlefield? @me_shots.delete shot add_to_message_queue('del', shot) else add_to_message_queue('obj', shot) end end @client.send_message @messages.join("n") @messages.clear check the other shots on screen to see if it hits me, if it does, tell the server I was hit Sunday, 9 June, 13
- 79. def update begin move_tank px, py= @me.x, @me.y @me.move @me.warp_to(px, py) if @me.hit_wall? or @me.outside_battlefield? @other_tanks.each do |player, tank| @me.warp_to(px, py) if tank.alive? and @me.collide_with?(tank, 30) end add_to_message_queue('obj', @me) @other_shots.each_value do |shot| if @me.alive? and @me.collide_with?(shot, 16) @me.hit add_to_message_queue('obj', @me) end end @me_shots.each do |shot| shot.move # move the bullet if shot.hit_wall? or shot.outside_battlefield? @me_shots.delete shot add_to_message_queue('del', shot) else add_to_message_queue('obj', shot) end end @client.send_message @messages.join("n") @messages.clear move my shots, if it hits the wall or goes out, remove it Sunday, 9 June, 13
- 80. def update begin move_tank px, py= @me.x, @me.y @me.move @me.warp_to(px, py) if @me.hit_wall? or @me.outside_battlefield? @other_tanks.each do |player, tank| @me.warp_to(px, py) if tank.alive? and @me.collide_with?(tank, 30) end add_to_message_queue('obj', @me) @other_shots.each_value do |shot| if @me.alive? and @me.collide_with?(shot, 16) @me.hit add_to_message_queue('obj', @me) end end @me_shots.each do |shot| shot.move # move the bullet if shot.hit_wall? or shot.outside_battlefield? @me_shots.delete shot add_to_message_queue('del', shot) else add_to_message_queue('obj', shot) end end @client.send_message @messages.join("n") @messages.clear if not, tell the server its new position Sunday, 9 June, 13
- 81. def update begin move_tank px, py= @me.x, @me.y @me.move @me.warp_to(px, py) if @me.hit_wall? or @me.outside_battlefield? @other_tanks.each do |player, tank| @me.warp_to(px, py) if tank.alive? and @me.collide_with?(tank, 30) end add_to_message_queue('obj', @me) @other_shots.each_value do |shot| if @me.alive? and @me.collide_with?(shot, 16) @me.hit add_to_message_queue('obj', @me) end end @me_shots.each do |shot| shot.move # move the bullet if shot.hit_wall? or shot.outside_battlefield? @me_shots.delete shot add_to_message_queue('del', shot) else add_to_message_queue('obj', shot) end end @client.send_message @messages.join("n") @messages.clear all my actions are processed, now to send messages to server Sunday, 9 June, 13
- 82.
- 83. Client reads messages fromthe server Sunday, 9 June, 13
- 84. if msg =@client.read_message @valid_sprites.clear data = msg.split("n") data.each do |row| sprite = row.split("|") if sprite.size == 9 player = sprite[3] @valid_sprites << sprite[0] case sprite[1] when 'tank' unless player == @player if @other_tanks[player] @other_tanks[player].points = sprite[7].to_i @other_tanks[player].warp_to(sprite[4], sprite[5], sprite[6]) else @other_tanks[player] = Tank.from_sprite(self, sprite) end else @me.points = sprite[7].to_i end when 'shot' unless player == @player shot = Shot.from_sprite(self, sprite) @other_shots[shot.uuid] = shot shot.warp_to(sprite[4], sprite[5], sprite[6]) end end end end Sunday, 9 June, 13
- 85. if msg =@client.read_message @valid_sprites.clear data = msg.split("n") data.each do |row| sprite = row.split("|") if sprite.size == 9 player = sprite[3] @valid_sprites << sprite[0] case sprite[1] when 'tank' unless player == @player if @other_tanks[player] @other_tanks[player].points = sprite[7].to_i @other_tanks[player].warp_to(sprite[4], sprite[5], sprite[6]) else @other_tanks[player] = Tank.from_sprite(self, sprite) end else @me.points = sprite[7].to_i end when 'shot' unless player == @player shot = Shot.from_sprite(self, sprite) @other_shots[shot.uuid] = shot shot.warp_to(sprite[4], sprite[5], sprite[6]) end end end end read messages from the server Sunday, 9 June, 13
- 86. if msg =@client.read_message @valid_sprites.clear data = msg.split("n") data.each do |row| sprite = row.split("|") if sprite.size == 9 player = sprite[3] @valid_sprites << sprite[0] case sprite[1] when 'tank' unless player == @player if @other_tanks[player] @other_tanks[player].points = sprite[7].to_i @other_tanks[player].warp_to(sprite[4], sprite[5], sprite[6]) else @other_tanks[player] = Tank.from_sprite(self, sprite) end else @me.points = sprite[7].to_i end when 'shot' unless player == @player shot = Shot.from_sprite(self, sprite) @other_shots[shot.uuid] = shot shot.warp_to(sprite[4], sprite[5], sprite[6]) end end end end parse the server messages into sprites Sunday, 9 June, 13
- 87. if msg =@client.read_message @valid_sprites.clear data = msg.split("n") data.each do |row| sprite = row.split("|") if sprite.size == 9 player = sprite[3] @valid_sprites << sprite[0] case sprite[1] when 'tank' unless player == @player if @other_tanks[player] @other_tanks[player].points = sprite[7].to_i @other_tanks[player].warp_to(sprite[4], sprite[5], sprite[6]) else @other_tanks[player] = Tank.from_sprite(self, sprite) end else @me.points = sprite[7].to_i end when 'shot' unless player == @player shot = Shot.from_sprite(self, sprite) @other_shots[shot.uuid] = shot shot.warp_to(sprite[4], sprite[5], sprite[6]) end end end end for tank sprites other than me, set the properties and move it Sunday, 9 June, 13
- 88. if msg =@client.read_message @valid_sprites.clear data = msg.split("n") data.each do |row| sprite = row.split("|") if sprite.size == 9 player = sprite[3] @valid_sprites << sprite[0] case sprite[1] when 'tank' unless player == @player if @other_tanks[player] @other_tanks[player].points = sprite[7].to_i @other_tanks[player].warp_to(sprite[4], sprite[5], sprite[6]) else @other_tanks[player] = Tank.from_sprite(self, sprite) end else @me.points = sprite[7].to_i end when 'shot' unless player == @player shot = Shot.from_sprite(self, sprite) @other_shots[shot.uuid] = shot shot.warp_to(sprite[4], sprite[5], sprite[6]) end end end end only time the server tells me about my changes is when I’m hit Sunday, 9 June, 13
- 89. if msg =@client.read_message @valid_sprites.clear data = msg.split("n") data.each do |row| sprite = row.split("|") if sprite.size == 9 player = sprite[3] @valid_sprites << sprite[0] case sprite[1] when 'tank' unless player == @player if @other_tanks[player] @other_tanks[player].points = sprite[7].to_i @other_tanks[player].warp_to(sprite[4], sprite[5], sprite[6]) else @other_tanks[player] = Tank.from_sprite(self, sprite) end else @me.points = sprite[7].to_i end when 'shot' unless player == @player shot = Shot.from_sprite(self, sprite) @other_shots[shot.uuid] = shot shot.warp_to(sprite[4], sprite[5], sprite[6]) end end end end move the shot sprites Sunday, 9 June, 13
- 90. if msg =@client.read_message @valid_sprites.clear data = msg.split("n") data.each do |row| sprite = row.split("|") if sprite.size == 9 player = sprite[3] @valid_sprites << sprite[0] case sprite[1] when 'tank' unless player == @player if @other_tanks[player] @other_tanks[player].points = sprite[7].to_i @other_tanks[player].warp_to(sprite[4], sprite[5], sprite[6]) else @other_tanks[player] = Tank.from_sprite(self, sprite) end else @me.points = sprite[7].to_i end when 'shot' unless player == @player shot = Shot.from_sprite(self, sprite) @other_shots[shot.uuid] = shot shot.warp_to(sprite[4], sprite[5], sprite[6]) end end end end Sunday, 9 June, 13
- 91.
- 92. @other_shots.delete_if do |uuid,shot| !@valid_sprites.include?(uuid) end @other_tanks.delete_if do |user, tank| !@valid_sprites.include?(tank.uuid) end end if shots and tanks (other than myself) weren’t broadcast from the server, this means they’ve been removed Sunday, 9 June, 13
- 93. Level 3 Complete! Sunday, 9June, 13
- 94. Game Server Sunday, 9June, 13
- 95.
- 96.
- 97. Event-driven IO librarybased on Celluloid Duck types Ruby IO classes (TCPSocket, TCPServer etc) Celluloid combines OO with concurrent programming, simplifies building multithreaded programs Sunday, 9 June, 13
- 98. require 'celluloid/io' class Arena includeCelluloid::IO finalizer :shutdown def initialize(host, port) puts "Starting Tanks Arena at #{host}:#{port}." @server = TCPServer.new(host, port) @sprites = Hash.new @players = Hash.new async.run end def shutdown @server.close if @server end def run loop { async.handle_connection @server.accept } end Sunday, 9 June, 13
- 99. require 'celluloid/io' class Arena includeCelluloid::IO finalizer :shutdown def initialize(host, port) puts "Starting Tanks Arena at #{host}:#{port}." @server = TCPServer.new(host, port) @sprites = Hash.new @players = Hash.new async.run end def shutdown @server.close if @server end def run loop { async.handle_connection @server.accept } end What to do when the server terminates Sunday, 9 June, 13
- 100. require 'celluloid/io' class Arena includeCelluloid::IO finalizer :shutdown def initialize(host, port) puts "Starting Tanks Arena at #{host}:#{port}." @server = TCPServer.new(host, port) @sprites = Hash.new @players = Hash.new async.run end def shutdown @server.close if @server end def run loop { async.handle_connection @server.accept } end Run the Arena object in a new thread Sunday, 9 June, 13
- 101. require 'celluloid/io' class Arena includeCelluloid::IO finalizer :shutdown def initialize(host, port) puts "Starting Tanks Arena at #{host}:#{port}." @server = TCPServer.new(host, port) @sprites = Hash.new @players = Hash.new async.run end def shutdown @server.close if @server end def run loop { async.handle_connection @server.accept } end When a client connects, handle the connection in a new thread Sunday, 9 June, 13
- 102. def handle_connection(socket) _, port,host = socket.peeraddr user = "#{host}:#{port}" puts "#{user} has joined the arena." loop do data = socket.readpartial(4096) data_array = data.split("n") if data_array and !data_array.empty? begin data_array.each do |row| message = row.split("|") if message.size == 10 case message[0] when 'obj' @players[user] = message[1..9] unless @players[user] @sprites[message[1]] = message[1..9] when 'del' @sprites.delete message[1] end end . . . Sunday, 9 June, 13
- 103. def handle_connection(socket) _, port,host = socket.peeraddr user = "#{host}:#{port}" puts "#{user} has joined the arena." loop do data = socket.readpartial(4096) data_array = data.split("n") if data_array and !data_array.empty? begin data_array.each do |row| message = row.split("|") if message.size == 10 case message[0] when 'obj' @players[user] = message[1..9] unless @players[user] @sprites[message[1]] = message[1..9] when 'del' @sprites.delete message[1] end end . . . Uniquely identifies a user Sunday, 9 June, 13
- 104. def handle_connection(socket) _, port,host = socket.peeraddr user = "#{host}:#{port}" puts "#{user} has joined the arena." loop do data = socket.readpartial(4096) data_array = data.split("n") if data_array and !data_array.empty? begin data_array.each do |row| message = row.split("|") if message.size == 10 case message[0] when 'obj' @players[user] = message[1..9] unless @players[user] @sprites[message[1]] = message[1..9] when 'del' @sprites.delete message[1] end end . . . Get data from the client Sunday, 9 June, 13
- 105. def handle_connection(socket) _, port,host = socket.peeraddr user = "#{host}:#{port}" puts "#{user} has joined the arena." loop do data = socket.readpartial(4096) data_array = data.split("n") if data_array and !data_array.empty? begin data_array.each do |row| message = row.split("|") if message.size == 10 case message[0] when 'obj' @players[user] = message[1..9] unless @players[user] @sprites[message[1]] = message[1..9] when 'del' @sprites.delete message[1] end end . . . Add to list of players if player is new Sunday, 9 June, 13
- 106. def handle_connection(socket) _, port,host = socket.peeraddr user = "#{host}:#{port}" puts "#{user} has joined the arena." loop do data = socket.readpartial(4096) data_array = data.split("n") if data_array and !data_array.empty? begin data_array.each do |row| message = row.split("|") if message.size == 10 case message[0] when 'obj' @players[user] = message[1..9] unless @players[user] @sprites[message[1]] = message[1..9] when 'del' @sprites.delete message[1] end end . . . Add to list of sprites in this server Sunday, 9 June, 13
- 107. def handle_connection(socket) _, port,host = socket.peeraddr user = "#{host}:#{port}" puts "#{user} has joined the arena." loop do data = socket.readpartial(4096) data_array = data.split("n") if data_array and !data_array.empty? begin data_array.each do |row| message = row.split("|") if message.size == 10 case message[0] when 'obj' @players[user] = message[1..9] unless @players[user] @sprites[message[1]] = message[1..9] when 'del' @sprites.delete message[1] end end . . . Remove sprite from this server Sunday, 9 June, 13
- 108. . . . response = String.new @sprites.each_valuedo |sprite| (response << sprite.join("|") << "n") if sprite end socket.write response end rescue Exception => exception puts exception.backtrace end end # end data end # end loop rescue EOFError => err player = @players[user] puts "#{player[3]} has left arena." @sprites.delete player[0] @players.delete user socket.close end end Sunday, 9 June, 13
- 109. . . . response = String.new @sprites.each_valuedo |sprite| (response << sprite.join("|") << "n") if sprite end socket.write response end rescue Exception => exception puts exception.backtrace end end # end data end # end loop rescue EOFError => err player = @players[user] puts "#{player[3]} has left arena." @sprites.delete player[0] @players.delete user socket.close end end Send list of sprites to the client Sunday, 9 June, 13
- 110. . . . response = String.new @sprites.each_valuedo |sprite| (response << sprite.join("|") << "n") if sprite end socket.write response end rescue Exception => exception puts exception.backtrace end end # end data end # end loop rescue EOFError => err player = @players[user] puts "#{player[3]} has left arena." @sprites.delete player[0] @players.delete user socket.close end end If client disconnects, remove the player and sprite Sunday, 9 June, 13
- 111. server, port =ARGV[0] || "0.0.0.0", ARGV[1] || 1234 supervisor = Arena.supervise(server, port.to_i) trap("INT") do supervisor.terminate exit end sleep Sunday, 9 June, 13
- 112. server, port =ARGV[0] || "0.0.0.0", ARGV[1] || 1234 supervisor = Arena.supervise(server, port.to_i) trap("INT") do supervisor.terminate exit end sleep Monitors and restarts the server if it crashes Sunday, 9 June, 13
- 113. server, port =ARGV[0] || "0.0.0.0", ARGV[1] || 1234 supervisor = Arena.supervise(server, port.to_i) trap("INT") do supervisor.terminate exit end sleep Nothing for the main thread to do so, sleep and let the other threads run Sunday, 9 June, 13
- 114.
- 115. Level 4 Complete! Sunday, 9June, 13
- 116. Advanced stuff (a bitmore) Sunday, 9 June, 13
- 117. Run more than1 game server? Provide custom maps and sprites for every server? Manage and monitor game servers (not through a console)? Sunday, 9 June, 13
- 118. Web-based game server console Sunday,9 June, 13
- 119.
- 120. configure do @@port_range =(10000..11000).to_a end get "/" do @arenas = Celluloid::Actor.all haml :arenas end post "/arena/start" do port = @@port_range.delete @@port_range.sample arena = Arena.new(request.host, port, request.port) arena.map_url = params[:map_url] arena.spritesheet_url = params[:spritesheet_url] arena.default_hp = params[:default_hp].to_i Celluloid::Actor[:"arena_#{port}"] = arena redirect "/" end get "/arena/stop/:name" do raise "No such arena" unless Celluloid::Actor[params[:name].to_sym] Celluloid::Actor[params[:name].to_sym].terminate redirect "/" end get "/config/:name" do arena = Celluloid::Actor[params[:name].to_sym] array = [arena.map_url, arena.spritesheet_url, arena.default_hp.to_s].join("|") end Sunday, 9 June, 13
- 121. configure do @@port_range =(10000..11000).to_a end get "/" do @arenas = Celluloid::Actor.all haml :arenas end post "/arena/start" do port = @@port_range.delete @@port_range.sample arena = Arena.new(request.host, port, request.port) arena.map_url = params[:map_url] arena.spritesheet_url = params[:spritesheet_url] arena.default_hp = params[:default_hp].to_i Celluloid::Actor[:"arena_#{port}"] = arena redirect "/" end get "/arena/stop/:name" do raise "No such arena" unless Celluloid::Actor[params[:name].to_sym] Celluloid::Actor[params[:name].to_sym].terminate redirect "/" end get "/config/:name" do arena = Celluloid::Actor[params[:name].to_sym] array = [arena.map_url, arena.spritesheet_url, arena.default_hp.to_s].join("|") end Start server at any of these ports Sunday, 9 June, 13
- 122. configure do @@port_range =(10000..11000).to_a end get "/" do @arenas = Celluloid::Actor.all haml :arenas end post "/arena/start" do port = @@port_range.delete @@port_range.sample arena = Arena.new(request.host, port, request.port) arena.map_url = params[:map_url] arena.spritesheet_url = params[:spritesheet_url] arena.default_hp = params[:default_hp].to_i Celluloid::Actor[:"arena_#{port}"] = arena redirect "/" end get "/arena/stop/:name" do raise "No such arena" unless Celluloid::Actor[params[:name].to_sym] Celluloid::Actor[params[:name].to_sym].terminate redirect "/" end get "/config/:name" do arena = Celluloid::Actor[params[:name].to_sym] array = [arena.map_url, arena.spritesheet_url, arena.default_hp.to_s].join("|") end Registry of all arenas Sunday, 9 June, 13
- 123. configure do @@port_range =(10000..11000).to_a end get "/" do @arenas = Celluloid::Actor.all haml :arenas end post "/arena/start" do port = @@port_range.delete @@port_range.sample arena = Arena.new(request.host, port, request.port) arena.map_url = params[:map_url] arena.spritesheet_url = params[:spritesheet_url] arena.default_hp = params[:default_hp].to_i Celluloid::Actor[:"arena_#{port}"] = arena redirect "/" end get "/arena/stop/:name" do raise "No such arena" unless Celluloid::Actor[params[:name].to_sym] Celluloid::Actor[params[:name].to_sym].terminate redirect "/" end get "/config/:name" do arena = Celluloid::Actor[params[:name].to_sym] array = [arena.map_url, arena.spritesheet_url, arena.default_hp.to_s].join("|") end Start arena Sunday, 9 June, 13
- 124. configure do @@port_range =(10000..11000).to_a end get "/" do @arenas = Celluloid::Actor.all haml :arenas end post "/arena/start" do port = @@port_range.delete @@port_range.sample arena = Arena.new(request.host, port, request.port) arena.map_url = params[:map_url] arena.spritesheet_url = params[:spritesheet_url] arena.default_hp = params[:default_hp].to_i Celluloid::Actor[:"arena_#{port}"] = arena redirect "/" end get "/arena/stop/:name" do raise "No such arena" unless Celluloid::Actor[params[:name].to_sym] Celluloid::Actor[params[:name].to_sym].terminate redirect "/" end get "/config/:name" do arena = Celluloid::Actor[params[:name].to_sym] array = [arena.map_url, arena.spritesheet_url, arena.default_hp.to_s].join("|") end Register arena Sunday, 9 June, 13
- 125. configure do @@port_range =(10000..11000).to_a end get "/" do @arenas = Celluloid::Actor.all haml :arenas end post "/arena/start" do port = @@port_range.delete @@port_range.sample arena = Arena.new(request.host, port, request.port) arena.map_url = params[:map_url] arena.spritesheet_url = params[:spritesheet_url] arena.default_hp = params[:default_hp].to_i Celluloid::Actor[:"arena_#{port}"] = arena redirect "/" end get "/arena/stop/:name" do raise "No such arena" unless Celluloid::Actor[params[:name].to_sym] Celluloid::Actor[params[:name].to_sym].terminate redirect "/" end get "/config/:name" do arena = Celluloid::Actor[params[:name].to_sym] array = [arena.map_url, arena.spritesheet_url, arena.default_hp.to_s].join("|") end Terminate arena Sunday, 9 June, 13
- 126. configure do @@port_range =(10000..11000).to_a end get "/" do @arenas = Celluloid::Actor.all haml :arenas end post "/arena/start" do port = @@port_range.delete @@port_range.sample arena = Arena.new(request.host, port, request.port) arena.map_url = params[:map_url] arena.spritesheet_url = params[:spritesheet_url] arena.default_hp = params[:default_hp].to_i Celluloid::Actor[:"arena_#{port}"] = arena redirect "/" end get "/arena/stop/:name" do raise "No such arena" unless Celluloid::Actor[params[:name].to_sym] Celluloid::Actor[params[:name].to_sym].terminate redirect "/" end get "/config/:name" do arena = Celluloid::Actor[params[:name].to_sym] array = [arena.map_url, arena.spritesheet_url, arena.default_hp.to_s].join("|") end Let client know about the customizations Sunday, 9 June, 13
- 127. configure do @@port_range =(10000..11000).to_a end get "/" do @arenas = Celluloid::Actor.all haml :arenas end post "/arena/start" do port = @@port_range.delete @@port_range.sample arena = Arena.new(request.host, port, request.port) arena.map_url = params[:map_url] arena.spritesheet_url = params[:spritesheet_url] arena.default_hp = params[:default_hp].to_i Celluloid::Actor[:"arena_#{port}"] = arena redirect "/" end get "/arena/stop/:name" do raise "No such arena" unless Celluloid::Actor[params[:name].to_sym] Celluloid::Actor[params[:name].to_sym].terminate redirect "/" end get "/config/:name" do arena = Celluloid::Actor[params[:name].to_sym] array = [arena.map_url, arena.spritesheet_url, arena.default_hp.to_s].join("|") end Sunday, 9 June, 13
- 128.
- 129. Thank you for listening Sunday,9 June, 13
- 130.