Fix: fixed erroneous parts in bundle essence calculation

packages/model/value_transaction/value_transaction.go

@@ -206,8 +206,8 @@ func (this *ValueTransaction) GetBundleEssence() (result trinary.Trits) {
 
 	copy(result[0:], this.trits[ADDRESS_OFFSET:VALUE_END])
 
-	if this.GetValue() < 0 {
-		copy(result[:VALUE_END], this.trits[SIGNATURE_MESSAGE_FRAGMENT_OFFSET:SIGNATURE_MESSAGE_FRAGMENT_END])
+	if this.GetValue() >= 0 {
+		copy(result[VALUE_END:], this.trits[SIGNATURE_MESSAGE_FRAGMENT_OFFSET:SIGNATURE_MESSAGE_FRAGMENT_END])
 	}
 
 	this.signatureMessageFragmentMutex.RUnlock()

plugins/bundleprocessor/bundleprocessor.go

 package bundleprocessor
 
 import (
+	"github.com/iotadevelopment/go/packages/ternary"
 	"github.com/iotaledger/goshimmer/packages/errors"
 	"github.com/iotaledger/goshimmer/packages/model/bundle"
 	"github.com/iotaledger/goshimmer/packages/model/transactionmetadata"
@@ -52,6 +53,15 @@ func ProcessSolidBundleHead(headTransaction *value_transaction.ValueTransaction)
 			if currentTransaction.IsTail() {
 				newBundle.SetTransactionHashes(mapTransactionsToTransactionHashes(bundleTransactions))
 
+				if newBundle.IsValueBundle() {
+					var concatenatedBundleEssences = make(ternary.Trits, len(bundleTransactions)*value_transaction.BUNDLE_ESSENCE_SIZE)
+					for i, bundleTransaction := range bundleTransactions {
+						copy(concatenatedBundleEssences[value_transaction.BUNDLE_ESSENCE_SIZE*i:value_transaction.BUNDLE_ESSENCE_SIZE*(i+1)], bundleTransaction.GetBundleEssence())
+					}
+
+					// calc + set bundle hash
+				}
+
 				Events.BundleSolid.Trigger(newBundle, bundleTransactions)
 
 				return newBundle, nil