Terrain Physics

A few details

Project Description

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How we solved it

Our approach

Dynamics:

-Force Based Dynamics
-Impulse Based Dynamics
-Position Based Dynamics

Physics Objects:

– Softbody
– Rigidbody
– Particle
– LinearNode
– AngularNode

Integrators:

– Explicit Euler (2 different variants)
– Semi-Implicit Euler ( 2 different variants + angular integration)
– Verlet (3 different variants)
– VelocityVerlet ( 2 different variants)

Global Forces:

– Linear Gravity
– Spherical/Orbital Gravity
– Linear + Angular Damping(Force & Velocity based variants)
– Fluid Drag
– Buoyancy
– Wind force

Constraints & Motors

– Distance Constraint (Force, Impulse & Projection variants)
– Point Constraint (Projection Only)
– Linear Motor (Force, Impulse & Projection variants)
– Angular Motor(Torque & Impulse variants)

Collision Detection:

-BroadPhase
– AABB (Axis Aligned Bounding Box)
– OBB (Oriented Bounding Box)
– OBS (Oriented Bounding Sphere)
– Brute Force Method
– Spatial Partitioning (Grid)

-NarrowPhase
– SAT (Separating Axis Theorem)
– Sphere Collider
– Plane Collider
– Contact Manifold Generation(Relative Velocity, Contact Normal, CollisionPoint(s), Penetration Depth)

Collision Solver

– Gauss-Seidel method
– Parallel Jacobi method

Collision Response:

– Penalty Method (Force/Acceleration based)
– Linear + Angular Impulse Method (Velocity/Momentum based)
– Projection Method (Position based)
-Friction
– Linear + Angular Friction Impulse (Velocity/Momentum based)
-Restitution(Bounciness)
-Baumgarte Stabilization

Other features:

– Mesh skinning/deformation
– Cloth cutting and tearing (proper mesh separation is not yet implemented)
– Internal Softbody collision
– Procedurally generated softbodies + mesh (currently only Clothplane and Cube)
– Multiple simultaneous physics worlds.

People involved

4400???

Working hours

120.000

daily mouse clicks

2440

Red Bull