109 lines
2.7 KiB
Go
109 lines
2.7 KiB
Go
package Roulette
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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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zaCoinHashKey = "zaCoinHash"
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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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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 PlayRoulette(bet int, selectedNumber int) {
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ctx := storage.GetContext()
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playerOwner := runtime.GetScriptContainer().Sender
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if bet <= 0 {
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panic("Invalid bet amount")
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}
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zaCoinHash := storage.Get(ctx, zaCoinHashKey).(interop.Hash160)
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playerBalance := contract.Call(zaCoinHash, "balanceOf", contract.ReadStates, playerOwner).(int)
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if playerBalance < bet {
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panic("Insufficient funds lol, expected > " + string(rune(bet)) + "but balance " + string(rune(playerBalance)))
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}
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if selectedNumber < 1 || selectedNumber > 36 {
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panic("Illegal number selected for roulette")
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}
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isWin := isWinner(selectedNumber)
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if isWin {
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panic("You win!")
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winAmount := calculateWinAmount(bet, selectedNumber)
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changePlayerBalance(ctx, playerOwner, winAmount)
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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(selectedNumber int) bool {
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rouletteNumber := (runtime.GetRandom() % 36) + 1
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runtime.Notify("rouletteNumber", rouletteNumber)
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runtime.Log("rouletteNumber " + string(rouletteNumber))
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return rouletteNumber == selectedNumber
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}
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func calculateWinAmount(bet int, selectedNumber int) int {
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coefficients := map[int]int{
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1: 36,
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2: 18,
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3: 2,
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}
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if coefficient, ok := coefficients[selectedNumber]; ok {
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return bet * coefficient
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}
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return 0
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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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from = playerContract
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to = playerOwner
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transferAmount = balanceChange
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} else {
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from = playerOwner
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to = playerContract
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transferAmount = -balanceChange
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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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