From 0b725cc4d239e9d4b58aaeb16c3bb56971924929 Mon Sep 17 00:00:00 2001
From: w1z7ard <w1z7ard@6778bc44-b910-0410-a7a0-be141de4315d>
Date: Tue, 14 Aug 2007 22:35:58 +0000
Subject: [PATCH] some touch up and empty() function added to preset chooser

git-svn-id: https://projectm.svn.sourceforge.net/svnroot/projectm/personal/carm/dev-1.0@330 6778bc44-b910-0410-a7a0-be141de4315d
---
 src/projectM-engine/PresetChooser.hpp     | 12 +++++++++++-
 src/projectM-engine/console_interface.cpp |  9 +++++++--
 2 files changed, 18 insertions(+), 3 deletions(-)

diff --git a/src/projectM-engine/PresetChooser.hpp b/src/projectM-engine/PresetChooser.hpp
index f1771b413..5f6064963 100644
--- a/src/projectM-engine/PresetChooser.hpp
+++ b/src/projectM-engine/PresetChooser.hpp
@@ -121,6 +121,11 @@ public:
     template <class WeightFunctor>
     std::auto_ptr<Preset> weightedRandom(const PresetInputs & presetInputs, PresetOutputs & preseOutputs);
 
+
+
+    /// True if no presets in directory 
+    bool empty() const;
+
 private:
     template <class WeightFunctor>
     std::auto_ptr<Preset> doWeightedSample(WeightFunctor & weightFunctor, const PresetInputs & presetInputs, PresetOutputs & presetOutputs);
@@ -191,6 +196,11 @@ std::auto_ptr<Preset> PresetChooser::weightedRandom(const PresetInputs & presetI
     return doWeightedSample(weightFunctor);
 }
 
+inline bool PresetChooser::empty() const {
+	return m_presetLoader->getNumPresets() == 0;
+
+}
+
 template <class WeightFunctor>
 inline  std::auto_ptr<Preset> PresetChooser::weightedRandom(const PresetInputs & presetInputs, PresetOutputs & presetOutputs){
 
@@ -202,7 +212,7 @@ inline  std::auto_ptr<Preset> PresetChooser::weightedRandom(const PresetInputs &
 inline std::auto_ptr<Preset> PresetChooser::directoryIndex(std::size_t index, const PresetInputs & presetInputs,
                                          PresetOutputs & presetOutputs) const {
 
-	return m_presetLoader->loadPreset(index,presetInputs, presetOutputs);
+	return m_presetLoader->loadPreset(index, presetInputs, presetOutputs);
 }
 
 template <class WeightFunctor>
diff --git a/src/projectM-engine/console_interface.cpp b/src/projectM-engine/console_interface.cpp
index 33af4714d..8599e26fc 100755
--- a/src/projectM-engine/console_interface.cpp
+++ b/src/projectM-engine/console_interface.cpp
@@ -169,7 +169,6 @@ void projectM::default_key_handler( projectMEvent event, projectMKeycode keycode
 		if (((*m_presetPos) == m_presetChooser->end())) {
 			*m_presetPos = m_presetChooser->begin();
 		}
-		m_activePreset = std::auto_ptr<Preset>(0);
 
 		m_activePreset =  m_presetPos->allocate(this->presetInputs, this->presetOutputs);
 
@@ -178,13 +177,19 @@ void projectM::default_key_handler( projectMEvent event, projectMKeycode keycode
 	      break;
 
 	    case PROJECTM_K_r:
+
+		if (m_presetChooser->empty())
+			break;
+
 		m_activePreset = m_presetChooser->weightedRandom<PresetChooser::UniformRandomFunctor>
 			(this->presetInputs, this->presetOutputs);
 		presetInputs.frame = 0;
 		smoothFrame = 0;
 		break;
 	    case PROJECTM_K_p:
-		
+		if (m_presetChooser->empty())
+			break;
+
 		if (*m_presetPos != m_presetChooser->begin()) {
 			--(*m_presetPos);			
 		} else {