hackerbots/client
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make term ui optional and orthogonal to client and player implementations #1

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sm wants to merge 3 commits from viz into master
pull from: viz
merge into: hackerbots:master
Conversation 0 Commits 3 Files Changed 5 +149 -85
5 changed files with 149 additions and 85 deletions
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18
client.go
View File

@ -27,17 +27,14 @@ type Client struct {
Server string
Game server.GameParam
// max dimensions of field
Width, Height float64
boardstate *server.Boardstate
enc encoder
dec decoder
ws *websocket.Conn
// visualization members
width, height float64
viewX, viewY int
StateStream chan *server.Boardstate
Die chan struct{}
Player
}
@ -149,8 +146,8 @@ func (c *Client) Negotiate(clientType string, player Player) (err error) {
case "spectator":
}
c.width = c.Game.BoardSize.Width
c.height = c.Game.BoardSize.Height
c.Width = c.Game.BoardSize.Width
c.Height = c.Game.BoardSize.Height
return nil
}
@ -167,11 +164,6 @@ func (c *Client) Play() error {
return errors.New(fmt.Sprintf("%s: Connection likely lost: %s", c.Name, err))
}
select {
case c.StateStream <- bs:
default:
}
err = c.enc.Encode(c.Update(bs))
if err != nil {
return err

22
cmd/botspectate/main.go
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@ -8,7 +8,6 @@ import (
"time"
"hackerbots.us/client"
"hackerbots.us/server"
)
var addr = flag.String("addr", "ws://localhost:8666", "server hostname")
@ -16,22 +15,19 @@ var forceJSON = flag.Bool("json", false, "force json encoding")
func main() {
rand.Seed(time.Now().UnixNano())
var gameId string
var gameID string
flag.Parse()
if flag.NArg() < 1 {
gameId = "debug"
gameID = "debug"
} else {
gameId = flag.Arg(0)
gameID = flag.Arg(0)
}
c := &client.Client{
Server: *addr,
Name: "bspect",
GameId: gameId,
GameId: gameID,
ForceJSON: *forceJSON,
StateStream: make(chan *server.Boardstate),
Die: make(chan struct{}),
Player: client.Spectator{},
}
var err error
err = c.Negotiate("spectator", c.Player)
@ -40,10 +36,16 @@ func main() {
os.Exit(1)
}
ui := client.NewSpectator(c.Width, c.Height)
c.Player = ui
go func() {
if err := c.Play(); err != nil {
close(c.Die)
close(ui.Die)
}
}()
c.Visualize()
if err := ui.Spectate(); err != nil {
fmt.Fprintf(os.Stderr, "problem during visualization: %+v\n", err)
os.Exit(1)
}
}

40
cmd/gobot/main.go
View File

@ -26,26 +26,24 @@ var weaponSpeed = flag.Int("wspeed", 50, "weapons speed")
var addr = flag.String("addr", "ws://localhost:8666", "server hostname")
var botname = flag.String("name", "gobot", "the name that other players will see")
var forceJSON = flag.Bool("json", false, "force json encoding")
var botType = flag.String("bot", "simple", "which Bot")
var botType = flag.String("bot", "simple", "which Bot [fraserbot, simple]")
var spectate = flag.Bool("spectate", false, "enable terminal visualizer")
func main() {
rand.Seed(time.Now().UnixNano())
var gameId string
var gameID string
flag.Parse()
if flag.NArg() < 1 {
gameId = "debug"
gameID = "debug"
} else {
gameId = flag.Arg(0)
gameID = flag.Arg(0)
}
c := &client.Client{
Server: *addr,
Name: *botname,
GameId: gameId,
// XXX: update with missing fields
GameId: gameID,
ForceJSON: *forceJSON,
StateStream: make(chan *server.Boardstate),
Die: make(chan struct{}),
}
sr := server.StatsRequest{
Hp: *hp,
@ -69,17 +67,33 @@ func main() {
os.Exit(1)
}
var err error
err = c.Negotiate("robot", c.Player)
if err != nil {
if err := c.Negotiate("robot", c.Player); err != nil {
fmt.Fprintf(os.Stderr, "%s: failed to negociate: %s\n", c.Name, err)
os.Exit(1)
}
if *spectate {
ui := client.NewSpectator(c.Width, c.Height)
players := client.MultiPlayer{
c.Player,
ui,
}
c.Player = players
go func() {
if err := c.Play(); err != nil {
close(c.Die)
fmt.Fprintf(os.Stderr, "problem during play: %v\n", err)
close(ui.Die)
}
}()
c.Visualize()
if err := ui.Spectate(); err != nil {
fmt.Fprintf(os.Stderr, "problem during visualization: %+v\n", err)
os.Exit(1)
}
} else {
if err := c.Play(); err != nil {
fmt.Fprintf(os.Stderr, "problem during play: %v\n", err)
os.Exit(1)
}
}
}

39
player.go
View File

@ -2,8 +2,7 @@ package client
import "hackerbots.us/server"
// Player is the interface that is implemented when specifying non-default
// player behavior.
// Player is the interface that defines a player's behavior.
//
// The general case will be to implement a Player type that contains the magic
// required to slay other robots quickly while staying alive for a long time.
@ -25,14 +24,36 @@ type Player interface {
Update(bs *server.Boardstate) map[string]server.Instruction
}
type Spectator struct{}
// MultiPlayer wraps multiple players and calls funcitons in Player in
// appropriate order.
//
// Typically used to add a Spectator to a bot.
type MultiPlayer []Player
func (s Spectator) SetIDs(map[string]string) {}
func (s Spectator) GetStats() map[string]server.StatsRequest {
return nil
// GetStats implements GetStats for a collection of players asking each player
// for their stats, and returning the configuration of the first player.
func (mp MultiPlayer) GetStats() map[string]server.StatsRequest {
var s map[string]server.StatsRequest
for i := len(mp) - 1; i >= 0; i-- {
s = mp[i].GetStats()
}
return s
}
func (s Spectator) Update(bs *server.Boardstate) map[string]server.Instruction {
return nil
// SetIDs passes ids to all players.
func (mp MultiPlayer) SetIDs(ids map[string]string) {
for _, p := range mp {
p.SetIDs(ids)
}
}
// Update implements Update for a collection of players sending board state to
// each player, and returning the instructions associated with the first
// player.
func (mp MultiPlayer) Update(bs *server.Boardstate) map[string]server.Instruction {
var inst map[string]server.Instruction
for i := len(mp) - 1; i >= 0; i-- {
inst = mp[i].Update(bs)
}
return inst
}

97
spectator.go
View File

@ -1,33 +1,61 @@
package client
import (
"errors"
"fmt"
"math"
"github.com/nsf/termbox-go"
"hackerbots.us/server"
"github.com/nsf/termbox-go"
)
var botDown rune = 'v'
var botUp rune = '^'
var botRight rune = '>'
var botLeft rune = '<'
const d = 'v'
const u = '^'
const r = '>'
const l = '<'
type size struct {
width, height int
// NewSpectator initializes and returns a *Spectator.
func NewSpectator(w, h float64) *Spectator {
return &Spectator{
StateStream: make(chan *server.Boardstate),
Die: make(chan struct{}),
width: w,
height: h,
}
}
// Recv is our implementation of receiving a server.Boardstate from the server
func (s *Client) Recv(bs *server.Boardstate) map[string]server.Instruction {
// Spectator encodes a termbox ui.
type Spectator struct {
// max dimensions of field
width, height float64
// dimensions of the terminal window
viewX, viewY int
StateStream chan *server.Boardstate
// when closed will cause the Spectator to exit the render loop.
Die chan struct{}
}
// SetIDs is implemented so Spectator can be used as a client.Player.
func (s Spectator) SetIDs(map[string]string) {}
// GetStats is implemented so Spectator can be used as a client.Player.
func (s Spectator) GetStats() map[string]server.StatsRequest { return nil }
// Update is implemented so Spectator can be used as a client.Player.
func (s Spectator) Update(bs *server.Boardstate) map[string]server.Instruction {
s.StateStream <- bs
return nil
}
func (s *Client) Visualize() {
// Spectate runs the termbox render loop.
func (s *Spectator) Spectate() error {
err := termbox.Init()
if err != nil {
panic(err)
return err
}
s.viewX, s.viewY = termbox.Size()
@ -56,6 +84,13 @@ func (s *Client) Visualize() {
switch event.Ch {
case 'q':
return
case 'f':
termbox.SetCell(
20,
20,
'*',
termbox.ColorRed, termbox.ColorBlack,
)
case 'c':
termbox.Clear(termbox.ColorBlack, termbox.ColorBlack)
}
@ -63,12 +98,13 @@ func (s *Client) Visualize() {
case termbox.EventResize:
s.viewX, s.viewY = event.Width, event.Height
case termbox.EventError:
panic(fmt.Sprintf("Quitting because of termbox error:\n%v\n", event.Err))
err = fmt.Errorf("Quitting because of termbox error:\n%v\n", event.Err)
return
}
case u := <-s.StateStream:
case update := <-s.StateStream:
termbox.Clear(termbox.ColorBlack, termbox.ColorBlack)
for _, obstacle := range u.Obstacles {
for _, obstacle := range update.Obstacles {
startX := int((obstacle.Bounds.A.X / s.width) * float64(s.viewX))
stopX := int((obstacle.Bounds.B.X / s.width) * float64(s.viewX))
startY := int((obstacle.Bounds.A.Y / s.height) * float64(s.viewY))
@ -85,21 +121,21 @@ func (s *Client) Visualize() {
}
}
for _, bot := range u.OtherRobots {
for _, bot := range update.OtherRobots {
x := int((bot.Position.X / s.width) * float64(s.viewX))
y := int((bot.Position.Y / s.height) * float64(s.viewY))
var b rune
if math.Abs(bot.Heading.X) > math.Abs(bot.Heading.Y) {
if bot.Heading.X > 0 {
b = botRight
b = r
} else {
b = botLeft
b = l
}
} else {
if bot.Heading.Y > 0 {
b = botUp
b = u
} else {
b = botDown
b = d
}
}
c := termbox.ColorRed
@ -114,7 +150,7 @@ func (s *Client) Visualize() {
)
}
for _, p := range u.Projectiles {
for _, p := range update.Projectiles {
x := int((p.Position.X / s.width) * float64(s.viewX))
y := int((p.Position.Y / s.height) * float64(s.viewY))
termbox.SetCell(
@ -125,7 +161,7 @@ func (s *Client) Visualize() {
)
}
for _, splosion := range u.Splosions {
for _, splosion := range update.Splosions {
startX := int(((splosion.Position.X - float64(splosion.Radius)) / s.width) * float64(s.viewX))
startY := int(((splosion.Position.Y - float64(splosion.Radius)) / s.height) * float64(s.viewY))
stopX := int(((splosion.Position.X+float64(splosion.Radius))/s.width)*float64(s.viewX)) + 1
@ -149,21 +185,21 @@ func (s *Client) Visualize() {
}
}
for _, bot := range u.MyRobots {
for _, bot := range update.MyRobots {
x := int((bot.Position.X / s.width) * float64(s.viewX))
y := int((bot.Position.Y / s.height) * float64(s.viewY))
var b rune
if math.Abs(bot.Heading.X) > math.Abs(bot.Heading.Y) {
if bot.Heading.X > 0 {
b = botRight
b = r
} else {
b = botLeft
b = l
}
} else {
if bot.Heading.Y > 0 {
b = botUp
b = u
} else {
b = botDown
b = d
}
}
c := termbox.ColorWhite
@ -178,15 +214,14 @@ func (s *Client) Visualize() {
)
}
err := termbox.Flush()
if err != nil {
panic(err)
}
err = termbox.Flush()
case <-s.Die:
err = errors.New("was told to die")
return
}
}
}()
termbox.Close()
return err
}