fixed compiler warnings

engine/Commands.cc

@@ -186,7 +186,7 @@ void CommandSetErrorString (const std::string &error_str){
 
 std::string CommandGetErrorString (){
 	if (!CommandsInitialized ())
-		return false;
+		return std::string("");
 
 	return CommandsInstance->GetErrorString();
 }

engine/IMGUIControls.cc

@@ -34,7 +34,7 @@ bool regionhit (int x, int y, int w, int h) {
 
 void DrawBlock (int x, int y, int w, int h) {
 	const float shading_dark = 0.5f;
-	const float shading_light = 1.3f;
+	// const float shading_light = 1.3f;
 
 	float color[4];
 	glGetFloatv (GL_CURRENT_COLOR, color);
@@ -297,6 +297,8 @@ bool Button (int id, const char* caption, int x, int y, int w, int h) {
 				controller->uistate.kbditem = 0;
 				return true;
 				break;
+			default:
+				break;
 		}
 	}
 
@@ -418,6 +420,8 @@ bool CheckButton (int id, const char* caption, bool checked, int x, int y, int w
 
 				return true;
 				break;
+			default:
+				break;
 		}
 	}
 
@@ -541,7 +545,7 @@ bool LineEdit (int id, int x, int y, std::string &text_value, const int &maxleng
 				break;
 			default:
 				// The raw input processing
-				if (maxlength > 0 && text_value.size() < maxlength) {
+				if (maxlength > 0 && static_cast<int>(text_value.size()) < maxlength) {
 					if (controller->uistate.last_unicode) {	
 						if ((controller->uistate.last_unicode & 0xFF80) == 0) {
 							// we do not want to add special characters such as backspaces
@@ -681,7 +685,7 @@ bool LineEditMasked (int id, int x, int y, std::string &text_value, const int &m
 				break;
 			default:
 				// The raw input processing
-				if (maxlength > 0 && text_value.size() < maxlength) {
+				if (maxlength > 0 && static_cast<int>(text_value.size()) < maxlength) {
 					if (controller->uistate.last_unicode) {	
 						if ((controller->uistate.last_unicode & 0xFF80) == 0) {
 							char c = controller->uistate.last_unicode & 0x7F;
@@ -789,6 +793,8 @@ float VerticalSlider (int id, int x, int y, int w, int h, float min_value, float
 				controller->uistate.last_keysym = SDLK_CLEAR;
 				return true;
 				break;
+			default:
+				break;
 		}
 	}
 

engine/SoundBase.h

@@ -11,8 +11,8 @@ class Module;
 class SoundSample {
 	public:
 		SoundSample() :
-			mMixChunk (NULL),
-			mChannel (-1) {
+			mChannel (-1),
+			mMixChunk (NULL) {
 			}
 		~SoundSample();