This repo contains the code for Irrlicht + Newton game tutorial.

• 9 Nov 2015 Added basic NewtonGD sample.
• 8 Nov 2015 Added Lua scripting and all the interaction logic is now defined by the Lua scripts.
• 7 Nov 2015 Sample Irrlicht program compiles with CMake build system.
• 3 Oct 2017 Migrated to Buck build system.
• 13 Apr 2018 Added many more improvements to the build configuration and some troubleshooting guides.
• 16 Apr 2018 Upgraded to Irrlicht 1.8.4
• 18 Apr 2018 Migrated to Bazel build system

• Fix starting position/rotation for bodies when creating them
• Fix impulse/force applying
• Fix OSX window focus
• Add automatic media/ copying to the bundle/binary directory
• Generalize build rules for different platforms
• Upgrade Irrlicht to 1.8.4
• Upgrade NewtonGD to 3.14

1. install Bazel from master branch
2. to build project, run the command from the project root directory

a. for OSX:

bazel build //irrlicht-newton-game:irrlicht-newton-game --apple_platform_type=macos

b. for Linux & others:

bazel build //irrlicht-newton-game:irrlicht-newton-game

3. run a demo with

a. for OSX:

bazel run //irrlicht-newton-game:irrlicht-newton-game

b. for others:

bazel run //irrlicht-newton-game:irrlicht-newton-game --apple_platform_type=macos

There is no more GetIdentityMatrix() - it was replaced with dGetIdentityMatrix(). There's also no more need to set m_w for dVector instances - it has the default value of 1.0. You can not multiply a dVector by a number - you have to call vector.Scale(x) to do this. There are no NewtonSetPlatformArchitecture and NewtonSetWorldSize anymore.

I've ran into two error messages after an upgrade of Clang to 6.0:

vendor/irrlicht/source/Irrlicht/MacOSX/CIrrDeviceMacOSX.mm:645:7: error: cast from pointer to smaller type 'NSOpenGLPixelFormatAttribute' (aka 'unsigned int') loses information
                                                (NSOpenGLPixelFormatAttribute)nil
                                                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
vendor/irrlicht/source/Irrlicht/MacOSX/CIrrDeviceMacOSX.mm:671:26: error: cast from pointer to smaller type 'NSOpenGLPixelFormatAttribute' (aka 'unsigned int') loses information
                                                        windowattribs[14]=(NSOpenGLPixelFormatAttribute)nil;

The fix was relatively easy, but required modifying the Irrlicht sources, which makes me sad.

// before:
windowattribs[14]=(NSOpenGLPixelFormatAttribute)nil;

// after:
windowattribs[14]=0;

// before:
NSOpenGLPixelFormatAttribute windowattribs[] =
{
    NSOpenGLPFANoRecovery,
    NSOpenGLPFAAccelerated,
    NSOpenGLPFADepthSize, (NSOpenGLPixelFormatAttribute)depthSize,
    NSOpenGLPFAColorSize, (NSOpenGLPixelFormatAttribute)CreationParams.Bits,
    NSOpenGLPFAAlphaSize, (NSOpenGLPixelFormatAttribute)alphaSize,
    NSOpenGLPFASampleBuffers, (NSOpenGLPixelFormatAttribute)1,
    NSOpenGLPFASamples, (NSOpenGLPixelFormatAttribute)CreationParams.AntiAlias,
    NSOpenGLPFAStencilSize, (NSOpenGLPixelFormatAttribute)(CreationParams.Stencilbuffer?1:0),
    NSOpenGLPFADoubleBuffer,
    (NSOpenGLPixelFormatAttribute)nil
};

// after:
NSOpenGLPixelFormatAttribute windowattribs[] =
{
    NSOpenGLPFANoRecovery,
    NSOpenGLPFAAccelerated,
    NSOpenGLPFADepthSize, (NSOpenGLPixelFormatAttribute)depthSize,
    NSOpenGLPFAColorSize, (NSOpenGLPixelFormatAttribute)CreationParams.Bits,
    NSOpenGLPFAAlphaSize, (NSOpenGLPixelFormatAttribute)alphaSize,
    NSOpenGLPFASampleBuffers, (NSOpenGLPixelFormatAttribute)1,
    NSOpenGLPFASamples, (NSOpenGLPixelFormatAttribute)CreationParams.AntiAlias,
    NSOpenGLPFAStencilSize, (NSOpenGLPixelFormatAttribute)(CreationParams.Stencilbuffer?1:0),
    NSOpenGLPFADoubleBuffer,
    0
};

Change one line in ObjectiveC code of Irrlicht, in the CIrrDeviceMacOSX.mm file, the CIrrDeviceMacOSX::CIrrDeviceMacOSX method (constructor):

// before:
[NSApplication sharedApplication]

// after:
[[NSApplication sharedApplication] activateIgnoringOtherApps:YES];

And then rebuild the application.

First, you will need to alter all the paths in the application code (both in C++ code and the scripts) to use the paths relative to the parent directory, containing your application bundle (the .app/ directory):

scriptMgr->loadScript("irrlicht-newton-game.app/Contents/MacOS/media/media/media/scripts/test1.lua");

and

createMesh("colliseum", "irrlicht-newton-game.app/Contents/MacOS/media/media/media/models/ramp_floor.3ds", "./media/media/media/models/ramp_floor.png")

Then run these commands to create the bundle itself:

cd bazel-bin/irrlicht-newton-game/irrlicht-newton-game.runfiles/__main__/irrlicht-newton-game
mkdir -p irrlicht-newton-game.app/Contents/MacOS
cp -r media/ irrlicht-newton-game irrlicht-newton-game.app/Contents/MacOS

Now you might run your application using either Finder or open irrlicht-newton-game.app.

A "hard to detect and fix" error might be found on Windows:

vendor/newton-dynamics/sdk/dCustomJoints/dCustomJoint.cpp(20): error C2491: 'dCustomJoint::m_key': definition of dllimport static data member not allowed

This is due to the aambigous linkage type - VisualStudio does not know whether it is static or dynamic, whilst by default it assumes dynamic linkage for Windows platform. This is defined by the CUSTOM_JOINTS_API macro in the vendor/newton-dynamics/sdk/dCustomJoints/dCustomAlloc.h file. To prevent this, you will need to pass the _CUSTOM_JOINTS_STATIC_LIB preprocessor constant. In bazel this could be achieved by using the defines: [ "_CUSTOM_JOINTS_STATIC_LIB", ] property.