Reset the Image Mapping last voice on Script Jump or Call

Assets.Scripts.Core.AssetManagement/AssetManager.cs

@@ -748,5 +748,16 @@ public string[] GetAvailableScriptNames()
 		{
 			return scriptList.ToArray();
 		}
+
+		public void OnScriptJumpOrCall()
+		{
+			// Each time a jump occurs, or a script is called, reset the last voice (used for Image Mapping ),
+			// as the scanner for Image Mapping resets the last voice each time it enters a new script.
+			//
+			// The last voice based image mapping doesn't really take into account the script advancing non-linearly
+			// within the same script file - it just assumes each script file is executed from start to finish, then
+			// returns to "flow".
+			ImageMappingLastVoiceNoExt = null;
+		}
 	}
 }

Assets.Scripts.Core.Buriko/BurikoScriptSystem.cs

@@ -78,6 +78,8 @@ public void JumpToBlock(string blockname)
 
 		public void JumpToScript(string scriptname, string blockname = "main")
 		{
+			AssetManager.Instance.OnScriptJumpOrCall();
+
 			Logger.Log((currentScript == null) ? $"Starting at script {scriptname} (block {blockname})" : $"Jumping from script {currentScript.Filename} to script {scriptname} (block {blockname})");
 			callStack.Clear();
 			scriptname = scriptname.ToLower();
@@ -95,6 +97,8 @@ public void JumpToScript(string scriptname, string blockname = "main")
 
 		public void CallScript(string scriptname, string blockname = "main")
 		{
+			AssetManager.Instance.OnScriptJumpOrCall();
+
 			if(scriptname == "flow")
 			{
 				FlowWasReached = true;