Unity

The technical preview for Unity!

Supports:
- Metal on Mac and iOS
- DX11 on Windows
- OpenGL on Windows

Features:
- Drag and drop .riv files to your Assets folder in Unity
- Preview the riv file by selecting it in Assets.
- Use [Rive.File](https://github.com/rive-app/rive/blob/f9567617cea631612ec29b98e047cbfeb597b7c3/packages/runtime_unity/public/package/Runtime/RiveFile.cs#L16) for loading Rive assets at runtime.
  - Iterate artboards
  - Load artboard by index or name
- File.loadArtboard calls return [Rive.Artboard](https://github.com/rive-app/rive/blob/f9567617cea631612ec29b98e047cbfeb597b7c3/packages/runtime_unity/public/package/Runtime/Artboard.cs#L13) objects.
  - Lists state machines
  - Load by name or index
  - Convert screen coordinates to artboard local
- Artboard.stateMachine calls load [Rive.StateMachine](https://github.com/rive-app/rive/blob/f9567617cea631612ec29b98e047cbfeb597b7c3/packages/runtime_unity/public/package/Runtime/StateMachine.cs)
  - Set pointerDown/Up/Move on StateMachine.

Upcoming Features:
- Get and set inputs on state machines.
- Get events from Artboards.
- Procedural rendering: use Rive's Renderer from C#!

Diffs=
faba3ff51 Unity (#6173)

Co-authored-by: Luigi Rosso <luigi-rosso@users.noreply.github.com>

.rive_head

diff --git a/.rive_head b/.rive_head
index a5ecfc8..08fea99 100644
--- a/.rive_head
+++ b/.rive_head
@@ -1 +1 @@
-18ae3210288344019381946136b5dc0474c3eb35
+faba3ff515e612f2fbc8e65dff11095f9a0dbbe2

src/shapes/path.cpp

diff --git a/src/shapes/path.cpp b/src/shapes/path.cpp
index 0f35eb1..ae7d0ab 100644
--- a/src/shapes/path.cpp
+++ b/src/shapes/path.cpp
@@ -64,7 +64,6 @@
 
 void Path::buildPath(CommandPath& commandPath) const
 {
-
     const bool isClosed = isPathClosed();
     const std::vector<PathVertex*>& vertices = m_Vertices;
 
@@ -244,8 +243,7 @@
 {
     Super::update(value);
 
-    assert(m_CommandPath != nullptr);
-    if (hasDirt(value, ComponentDirt::Path))
+    if (m_CommandPath != nullptr && hasDirt(value, ComponentDirt::Path))
     {
         if (m_Shape->canDeferPathUpdate())
         {