1839f5e7d1
- cmd/acb-maps-loader/main.go - wasm/bots/guardian/main.go - wasm/bots/hunter/main.go - wasm/bots/random/main.go - web/package-lock.json (npm ci update)
80 lines
1.9 KiB
Go
80 lines
1.9 KiB
Go
//go:build js && wasm
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// Package main compiles to random.wasm for the browser sandbox.
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// RandomBot makes uniformly random valid moves.
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package main
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import (
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"encoding/json"
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"math/rand"
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"syscall/js"
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"github.com/aicodebattle/acb/engine"
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)
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var (
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cfg engine.Config
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rng *rand.Rand
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visible *engine.VisibleState
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)
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// jsInit initializes the bot with game config.
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func jsInit(_ js.Value, args []js.Value) interface{} {
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if len(args) < 1 {
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return jsErr("configJSON argument required")
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}
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if err := json.Unmarshal([]byte(args[0].String()), &cfg); err != nil {
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return jsErr("parse config: " + err.Error())
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}
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rng = rand.New(rand.NewSource(42))
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visible = &engine.VisibleState{}
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return map[string]interface{}{"ok": true}
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}
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// jsComputeMoves returns random moves.
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func jsComputeMoves(_ js.Value, args []js.Value) interface{} {
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if len(args) < 1 {
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return "[]"
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}
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if err := json.Unmarshal([]byte(args[0].String()), visible); err != nil {
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return "[]"
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}
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moves := getMoves(visible)
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json, _ := json.Marshal(moves)
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return string(json)
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}
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// jsFreeResult is a no-op.
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func jsFreeResult(_ js.Value, _ []js.Value) interface{} {
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return nil
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}
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// getMoves implements RandomBot strategy.
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func getMoves(state *engine.VisibleState) []engine.Move {
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myID := state.You.ID
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allDirs := []engine.Direction{engine.DirN, engine.DirE, engine.DirS, engine.DirW}
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var moves []engine.Move
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for _, bot := range state.Bots {
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if bot.Owner != myID {
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continue
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}
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dir := allDirs[rng.Intn(4)]
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moves = append(moves, engine.Move{Position: bot.Position, Direction: dir})
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}
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return moves
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}
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func main() {
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js.Global().Set("randomBot", js.ValueOf(map[string]interface{}{
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"init": js.FuncOf(jsInit),
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"compute_moves": js.FuncOf(jsComputeMoves),
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"free_result": js.FuncOf(jsFreeResult),
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"version": "1.0.0",
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}))
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select {}
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}
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func jsErr(msg string) map[string]interface{} {
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return map[string]interface{}{"ok": false, "error": msg}
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}
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