generalize branching screens with ScreenBranch

Add ScreenRemoveMemoryCard
2003-12-24 20:29:26 +00:00
parent 90fcf5b7b3
commit e36b7e0120
11 changed files with 339 additions and 71 deletions
@@ -0,0 +1,92 @@
+#include "global.h"
+/*
+-----------------------------------------------------------------------------
+ Class: ScreenBranch
+
+ Desc: See header.
+
+ Copyright (c) 2001-2002 by the person(s) listed below.  All rights reserved.
+	Chris Danford
+-----------------------------------------------------------------------------
+*/
+
+#include "ScreenBranch.h"
+#include "RageLog.h"
+#include "GameConstantsAndTypes.h"
+#include "PlayerNumber.h"
+#include "ScreenManager.h"
+#include "ThemeManager.h"
+#include "Grade.h"
+#include "GameState.h"
+#include "StageStats.h"
+
+#define CHOICES						THEME->GetMetric (m_sName,"Choices")
+#define CONDITION(choice)			THEME->GetMetric (m_sName,"Condition"+choice)
+#define NEXT_SCREEN(choice)			THEME->GetMetric (m_sName,"NextScreen"+choice)
+
+bool EvaluateCondition( CString sCondition )
+{
+	// For now, empty expresions evaluate to true.  Is there a better way to handle this?
+	if( sCondition.empty() )
+		return true;
+	
+	// TODO: Make this a general expression evaluator
+	CStringArray as;
+	split( sCondition, ",", as, false );
+
+	if( as.size()==3 && as[0].CompareNoCase("topgrade")==0 )
+	{
+		Grade top_grade = GRADE_E;
+		vector<Song*> vSongs;
+		StageStats stats;
+		GAMESTATE->GetFinalEvalStatsAndSongs( stats, vSongs );
+		for( int p=0; p<NUM_PLAYERS; p++ )
+			if( GAMESTATE->IsHumanPlayer(p) )
+				top_grade = max( top_grade, stats.GetGrade((PlayerNumber)p) );
+
+		CString &sOp = as[1];
+
+		Grade grade = StringToGrade(as[2]);
+
+		if( sOp == ">=" )
+			return top_grade >= grade;
+	}
+
+	RageException::Throw( "Condition '%s' is invalid", sCondition.c_str() );
+}
+
+ScreenBranch::ScreenBranch( CString sClassName ) : Screen( sClassName )
+{
+	LOG->Trace( "ScreenBranch::ScreenBranch()" );
+	
+	CStringArray as;
+	split( CHOICES, ",", as, true );
+	for( unsigned i=0; i<as.size(); i++ )
+	{
+		CString sChoice = Capitalize( as[i] );
+		CString sCondition = CONDITION(sChoice);
+
+		if( EvaluateCondition(sCondition) )
+		{
+			m_sChoice = sChoice;
+			HandleScreenMessage( SM_GoToNextScreen );
+			return;
+		}
+	}
+
+	RageException::Throw( "On screen '%s' no conditions are true", sClassName.c_str() );
+}
+
+void ScreenBranch::HandleScreenMessage( const ScreenMessage SM )
+{
+	switch( SM )
+	{
+	case SM_GoToNextScreen:
+		{
+			CString sNextScreen = NEXT_SCREEN(m_sChoice);
+			LOG->Trace( "Branching to '%s'", sNextScreen.c_str() );
+			SCREENMAN->SetNewScreen( sNextScreen );
+		}
+		break;
+	}
+}