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RPS/rps.go

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