v3.2 Tasks

[erincatto]

• Gears
• Serialization
• Rollback
• Dynamic mover
• Text rendering
• Contact Ids
• Simplify island merging
• Joint local transforms
• Add max force/torque to weld joint
• Motor joint sucks
• Sample with b2Body_IsValid before b2DestroyBody
• Luxo lamp sample
• deferred restitution by one step for confirmed impact points
• document how to glue and split bodies
• time step of 0 still does collision
• Fix pre-solve to allow manifold manipulation. Split to a different callback for CCD.
• config.h
• test centering joint impulse when stretched
• hot reload friendly - b2_worlds, contact registry
• b2Body out of b2CollideTask by keeping bodySimIndex valid

[erincatto]

I think gears should just be geometry now. Pulleys could use chains like the gate demo.

[erincatto]

https://matthias-research.github.io/pages/publications/cableJoints.pdf

[erincatto]

Option for text, add these two functions to my imgui_user.xxx

void ScreenText( const ImVec2& Pos, ImU32 Col, const char* Format, ... )
    {
    va_list Args;
    va_start( Args, Format );
    ScreenTextV( Pos, Col, Format, Args );
    va_end( Args );
    }

void ScreenTextV( const ImVec2& Pos, ImU32 Col, const char* Format, va_list Args )
    {
    char Text[ 512 ];
    vsprintf_s( Text, Format, Args );

    ImGuiViewport* Viewport = ImGui::GetMainViewport();
    ImDrawList* DrawList = ImGui::GetBackgroundDrawList( Viewport );
    DrawList->AddText( IMGUI_FONT_REGULAR_BOLD, 0.0f, Viewport->WorkPos + Pos, Col, Text );
    }

[maxcana]

Rollback determinism?!
I can't believe my eyes. Thank you Erin Catto <3

[erincatto]

It would be kind of neat if library had a macro that would allow to prefix all functions with something (dllexport in this case)

Vulkan Memory Allocator has this it was rather helpful to me :)

https://discord.com/channels/460295137705197568/460295137705197570/1543035731356680253