Oculus Rift support now available [beta]
Entry posted by Josh ·
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As described earlier, Oculus Rift support is now enabled on the beta branch on Steam!
Enabling VR
To enable VR in any game, just add the Window::VRDisplay flag in the creation flags in the Window::Create() function:Window* window = Window::Create("My VR Game",0,0,1024,768,Window::Titlebar|Window::VRDisplay);
Or in Lua:
local window = Window:Create("My VR Game",0,0,1024,768,Window.Titlebar + Window.VRDisplay)
(If you are using a Lua project, you must update the project to get the new executables.)
It was very easy to add VR to my asteroids game. You can play it here:
http://www.leadwerks.com/werkspace/topic/11112-asteroidsvr/#entry80913
New Commands
There are only a few new commands to learn:Vec3 VR::GetHeadRotation()
Use this to modify the way your controls work. For example, use the player's head rotation to change the direction they move in when a key is pressed. You do not need to rotate the camera yourself, as this is done automatically.
Vec3 VR::GetHeadPosition()
I can't really think of any good use for this command, since it is all automatic. If you do any line of sight tests I suppose it would be useful.
void VR::Recenter()
Recenters the headset orientation according to the current position and rotation.
void VR::HideWarning()
Disable the Oculus warning popup, typically by pressing space or another key.
Updating Existing C++ Projects
Because this involves an additional C++ library, you must modify any existing C++ projects to compile with the beta build. To do this, right-click on the project name in the solution explorer and select Properties to open the properties window. Go to the linker settings and edit the Additional Dependencies value. Add the following line to the release build settings:libovr.lib
Apply the changes and then add the following line to the debug build settings, in the same place:
libovrd.lib
You must also modify the file main.cpp. Open this file and find the line that looks like this:
System::SaveSettings(settingsfile);
Add this line right after it:
System::Shutdown();
Your entire main,cpp will look like this:
#ifndef OS_IOS
#ifndef _DLL
#ifndef BUILD_STATICLIB
#include "App.h"
#endif
#endif
using namespace Leadwerks;
void DebugErrorHook(char* c)
{
Leadwerks::System::Print(c);
//=========================================================================================
//=========================================================================================
exit(1);//<--------------------------- Add a breakpoint here to catch errors
//=========================================================================================
//=========================================================================================
}
#ifdef __APPLE__
int main_(int argc,const char *argv[])
{
#else
int main(int argc,const char *argv[])
{
#endif
//Load saved settings
std::string settingsfile = std::string(argv[0]);
settingsfile = FileSystem::StripAll(settingsfile);
if (String::Right(settingsfile, 6) == ".debug") settingsfile = String::Left(settingsfile, settingsfile.length() - 6);
std::string settingsdir = FileSystem::GetAppDataPath();
#ifdef __linux__
#ifndef __ANDROID__
settingsdir = settingsdir + "/." + String::Lower(settingsfile);
#else
settingsdir = settingsdir + "/" + settingsfile;
#endif
#else
settingsdir = settingsdir + "/" + settingsfile;
#endif
if (FileSystem::GetFileType(settingsdir) == 0) FileSystem::CreateDir(settingsdir);
settingsfile = settingsdir + "/" + settingsfile + ".cfg";
System::LoadSettings(settingsfile);
//Load command-line parameters
System::ParseCommandLine(argc, argv);
//Add debug hook for catching errors
Leadwerks::System::AddHook(System::DebugErrorHook,(void*)DebugErrorHook);
//Load any zip files in main directory
Leadwerks::Directory* dir = Leadwerks::FileSystem::LoadDir(".");
if (dir)
{
for (int i=0; i<dir->files.size(); i++)
{
std::string file = dir->files[i];
if (Leadwerks::String::Lower(Leadwerks::FileSystem::ExtractExt(file))=="zip")
{
Leadwerks::Package::Load(file);
}
}
delete dir;
}
#ifdef DEBUG
std::string debuggerhostname = System::GetProperty("debuggerhostname");
if (debuggerhostname!="")
{
//Connect to the debugger
int debuggerport = String::Int(System::GetProperty("debuggerport"));
if (!Interpreter::Connect(debuggerhostname,debuggerport))
{
Print("Error: Failed to connect to debugger with hostname \""+debuggerhostname+"\" and port "+String(debuggerport)+".");
return false;
}
Print("Successfully connected to debugger.");
std::string breakpointsfile = System::GetProperty("breakpointsfile");
if (breakpointsfile!="")
{
if (!Interpreter::LoadBreakpoints(breakpointsfile))
{
Print("Error: Failed to load breakpoints file \""+breakpointsfile+"\".");
}
}
}
else
{
// Print("No debugger hostname supplied in command line.");
}
#endif
App* app = new App;
if (app->Start())
{
while (app->Loop()) {}
#ifdef DEBUG
Interpreter::Disconnect();
#endif
//Save settings
delete app;
System::SaveSettings(settingsfile);
System::Shutdown();
return 0;
}
else
{
#ifdef DEBUG
Interpreter::Disconnect();
#endif
return 1;
}
}
#endif
That's it! Have fun and let me know what you come up with!
-
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