server/game.go

328 lines
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package main
import (
"log"
"sort"
"sync"
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"time"
)
const maxPlayer = 128
type BotHealth struct {
RobotId string `json:"robot_id"`
Health int `json:"health"`
}
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type Scanner struct {
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Id string `json:"id"`
Type string `json:"type"`
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}
type MapLock struct {
m map[string]*game
sync.RWMutex
}
// get is a function that returns a game if found, and creates one if
// not found and force is true. In order to get a hash (rather than use
// the string you pass) send "" for id.
func (ml *MapLock) get(id string) *game {
ml.Lock()
g, _ := ml.m[id]
ml.Unlock()
return g
}
func (ml *MapLock) add(g *game) {
ml.Lock()
ml.m[g.id] = g
ml.Unlock()
}
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type WinnerMap struct {
m map[string]int
sync.RWMutex
}
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type game struct {
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id string
players map[*player]bool
projectiles map[*Projectile]bool
splosions map[*Splosion]bool
obstacles []Obstacle
register chan *player
unregister chan *player
turn int
players_remaining int
width, height float32
spectators map[*Spectator]bool
sregister chan *Spectator
sunregister chan *Spectator
kill chan bool
repair_hp int
repair_rate float32
tick_duration int
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winners WinnerMap
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}
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func NewGame(id string, width, height float32, tick int) *game {
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g := &game{
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id: id,
register: make(chan *player),
unregister: make(chan *player, maxPlayer),
projectiles: make(map[*Projectile]bool),
splosions: make(map[*Splosion]bool),
obstacles: GenerateObstacles(conf.Obstacles, width, height),
players: make(map[*player]bool),
turn: 0,
width: width,
height: height,
spectators: make(map[*Spectator]bool),
sregister: make(chan *Spectator),
sunregister: make(chan *Spectator),
kill: make(chan bool, maxPlayer),
repair_hp: 5,
repair_rate: 3.0,
tick_duration: tick,
players_remaining: 2,
winners: WinnerMap{m: make(map[string]int)},
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}
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return g
}
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func (g *game) tick(payload *Boardstate) {
g.players_remaining = 0
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payload.Obstacles = g.obstacles
// Update Players
for p := range g.players {
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living_robots := 0
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for _, r := range p.Robots {
if r.Health > 0 {
living_robots++
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r.Tick(g)
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}
if len(r.Message) > 0 {
if len(r.Message) > 100 {
r.Message = r.Message[0:99]
}
payload.Messages = append(payload.Messages, r.Message)
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}
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payload.OtherRobots = append(
payload.OtherRobots,
r.GetTruncatedDetails())
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payload.AllBots = append(
payload.AllBots,
BotHealth{RobotId: r.Id, Health: r.Health})
}
if living_robots > 0 {
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g.players_remaining++
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}
}
// Update Projectiles
for pr := range g.projectiles {
pr.Tick(g)
}
// We do this here, because the tick calls can alter g.projectiles
for pr := range g.projectiles {
payload.Projectiles = append(payload.Projectiles, *pr)
}
// Update Splosions
for s := range g.splosions {
s.Tick()
if !s.Alive() {
delete(g.splosions, s)
}
payload.Splosions = append(payload.Splosions, *s)
}
}
func (g *game) sendUpdate(payload *Boardstate) {
// Ensure that the robots are always sent in a consistent order
sort.Sort(RobotSorter{Robots: payload.OtherRobots})
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sort.Sort(AllRobotSorter{Robots: payload.AllBots})
for p := range g.players {
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// Copy the payload but only add the robots in scanner range
player_payload := NewBoardstate()
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player_payload.Messages = payload.Messages
player_payload.Splosions = payload.Splosions
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player_payload.Obstacles = payload.Obstacles
player_payload.AllBots = payload.AllBots
player_payload.Turn = payload.Turn
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for _, r := range p.Robots {
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player_payload.MyRobots = append(player_payload.MyRobots, *r)
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player_payload.OtherRobots = append(
player_payload.OtherRobots,
r.GetTruncatedDetails())
}
player_payload.Projectiles = []Projectile{}
player_payload.Obstacles = []Obstacle{}
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living_robots := 0
for _, r := range p.Robots {
if r.Health > 0 {
living_robots++
// Filter robots by scanner
for player := range g.players {
for _, scan_entry := range r.Scanners {
for _, r := range player.Robots {
if r.Id == scan_entry.Id {
player_payload.OtherRobots = append(
player_payload.OtherRobots,
r.GetTruncatedDetails())
}
}
}
}
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// Filter projectiles
for proj := range g.projectiles {
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if proj.Owner == r {
player_payload.Projectiles = append(
player_payload.Projectiles,
*proj)
}
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for _, scan_entry := range r.Scanners {
if proj.Id == scan_entry.Id {
player_payload.Projectiles = append(
player_payload.Projectiles,
*proj)
}
}
}
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// Filter objects
for _, ob := range g.obstacles {
if ob.distance_from_point(r.Position) < float32(r.Stats.ScannerRadius)+r.ScanCounter {
player_payload.Obstacles = append(
player_payload.Obstacles,
ob)
}
}
}
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}
if living_robots == 0 {
player_payload.OtherRobots = payload.OtherRobots
player_payload.Projectiles = payload.Projectiles
player_payload.Obstacles = payload.Obstacles
}
p.send <- player_payload
}
for s := range g.spectators {
s.send <- payload
}
}
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func (g *game) run() {
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var t0, t1 time.Time
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ticker := time.NewTicker(time.Duration(conf.Tick) * time.Millisecond)
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for {
select {
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case <-g.kill:
log.Printf("game %s: received kill signal, dying gracefully", g.id)
games.Lock()
for player := range g.players {
close(player.send)
}
delete(games.m, g.id)
games.Unlock()
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return
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case p := <-g.register:
g.players[p] = true
case p := <-g.unregister:
delete(g.players, p)
close(p.send)
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case s := <-g.sregister:
g.spectators[s] = true
case s := <-g.sunregister:
delete(g.spectators, s)
close(s.send)
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case <-ticker.C:
t0 = time.Now()
payload := NewBoardstate()
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g.turn++
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payload.Turn = g.turn
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if *verbose {
log.Printf("\033[2JTurn: %v", g.turn)
log.Printf("Players: %v", len(g.players))
log.Printf("Projectiles: %v", len(g.projectiles))
log.Printf("Explosions: %v", len(g.splosions))
}
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// UPDATE GAME STATE
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if end, data := g.gameOver(); end {
g.sendGameOver(data)
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}
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g.tick(payload)
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t1 = time.Now()
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if *verbose {
log.Printf("Turn Processes %v\n", t1.Sub(t0))
}
// SEND THE UPDATE TO EACH PLAYER
g.sendUpdate(payload)
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t1 = time.Now()
if *verbose {
log.Printf("Sent Payload %v\n", t1.Sub(t0))
}
}
}
}
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func (g *game) gameOver() (bool, *GameOver) {
over := false
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var stats *GameOver
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if g.players_remaining <= 1 && len(g.players) > 1 {
g.obstacles = GenerateObstacles(conf.Obstacles, g.width, g.height)
log.Printf("game %s: game over", g.id)
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stats = NewGameOver()
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for p := range g.players {
for _, r := range p.Robots {
if r.Health > 0 {
log.Printf("Robot %v Survived", r.Id)
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g.winners.Lock()
g.winners.m[r.Id] += 1
g.winners.Unlock()
stats.Winners = append(stats.Winners, r.Id)
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}
r.reset(g)
}
}
over = true
}
return over, stats
}
func (g *game) sendGameOver(eg *GameOver) {
log.Printf("sending out game over message: %+v", eg)
for p := range g.players {
p.send <- eg
}
for s := range g.spectators {
s.send <- eg
}
}