118 lines
2.7 KiB
Go
118 lines
2.7 KiB
Go
package RPS
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import (
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"github.com/nspcc-dev/neo-go/pkg/interop"
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"github.com/nspcc-dev/neo-go/pkg/interop/contract"
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"github.com/nspcc-dev/neo-go/pkg/interop/runtime"
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"github.com/nspcc-dev/neo-go/pkg/interop/storage"
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)
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const (
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gasDecimals = 1_0000_0000
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initialBalance = 3000
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zaCoinHashKey = "zaCoinHash"
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)
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type Result struct {
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win bool
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tie bool
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lose bool
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}
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func _deploy(data interface{}, isUpdate bool) {
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if isUpdate {
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return
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}
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// Parse hash of forint contract from incoming data
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args := data.(struct {
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zaCoinHash interop.Hash160
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})
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if len(args.zaCoinHash) != interop.Hash160Len {
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panic("invalid hash of zaCoin contract")
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}
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ctx := storage.GetContext()
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storage.Put(ctx, zaCoinHashKey, args.zaCoinHash)
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}
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func PlayRPS(playerChoice string) {
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computerChoice := (runtime.GetRandom() % 3) + 1
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if computerChoice == 1 {
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computerChoice := "rock"
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} else if computerChoice == 2 {
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computerChoice := "paper"
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} else {
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computerChoice := "scissors"
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}
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result := isWinner(playerChoice, computerChoice)
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if result.tie {
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return
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} else if result.win {
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changePlayerBalance(ctx, playerOwner, bet)
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} else {
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changePlayerBalance(ctx, playerOwner, -bet)
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}
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}
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func isWinner(playerChoice, computerChoice string) Result {
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if playerChoice == computerChoice {
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return Result{tie: true}
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}
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if playerChoice == "rock" && computerChoice == "scissors" {
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return Result{win: true}
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}
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if playerChoice == "scissors" && computerChoice == "paper" {
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return Result{win: true}
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}
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if playerChoice == "paper" && computerChoice == "rock" {
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return Result{win: true}
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}
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return Result{lose: true}
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}
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func OnNEP17Payment(from interop.Hash160, amount int, data any) {
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ctx := storage.GetContext()
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zaCoinHash := storage.Get(ctx, zaCoinHashKey).(interop.Hash160)
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callingHash := runtime.GetCallingScriptHash()
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if !callingHash.Equals(zaCoinHash) {
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panic("only ZC is accepted")
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}
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}
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func changePlayerBalance(ctx storage.Context, playerOwner interop.Hash160, balanceChange int) {
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zaCoinHash := storage.Get(ctx, zaCoinHashKey).(interop.Hash160)
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playerContract := runtime.GetExecutingScriptHash()
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var from, to interop.Hash160
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var transferAmount int
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if balanceChange > 0 {
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// Transfer funds from contract to player owner
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from = playerContract
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to = playerOwner
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transferAmount = balanceChange
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} else {
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// Transfer funds from player owner to contract
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from = playerOwner
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to = playerContract
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transferAmount = -balanceChange // We flip sender/receiver, but keep amount positive
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}
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transferred := contract.Call(zaCoinHash, "transfer", contract.All, from, to, transferAmount, nil).(bool)
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if !transferred {
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panic("failed to transfer zaCoins")
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}
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}
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