(svn r8605) -Codechange: [OSX] changed all objective C to objective C++
This will permanently solve the issue where compilation on OSX broke because C++ code was added to some header files

-Note: (important if you develop mac specific code)
taken from http://developer.apple.com/releasenotes/Cocoa/Objective-C++.html
gdb lacks an integrated C++ with Objective-C parser. This means that gdb won't be able to evaluate expressions that contain both C++ and Objective-C constructs.
gdb assumes that the language for ".mm" files is C++.
you can change it to objective C by typing: (gdb) set language objc
Mixing C++ and objective C has some limitation (see link for all of them)

/* $Id$ */

#ifndef NEWGRF_SOUND_H
#define NEWGRF_SOUND_H

typedef enum VehicleSoundEvents {
	VSE_START        = 1,
	VSE_TUNNEL       = 2,
	VSE_BREAKDOWN    = 3,
	VSE_RUNNING      = 4,
	VSE_TOUCHDOWN    = 5,
	VSE_TRAIN_EFFECT = 6,
	VSE_RUNNING_16   = 7,
	VSE_STOPPED_16   = 8,
	VSE_LOAD_UNLOAD  = 9,
} VehicleSoundEvent;


FileEntry *AllocateFileEntry(void);
void InitializeSoundPool(void);
FileEntry *GetSound(uint index);
uint GetNumSounds(void);
bool PlayVehicleSound(const Vehicle *v, VehicleSoundEvent event);

#endif /* NEWGRF_SOUND_H */