HP2 AutoJump Code

APlayerPawn* PPawn = Cast<APlayerPawn>(this);
        if( PPawn && PPawn->bAutoJump )
        {
            static float MinAutoJumpCos = 0.25f;
            static float AutoJumpThreshold = 10.f;

            // Check whether center has crossed a ledge.
            FVector FootDel = FVector(0,0,-CollisionHeight);
            FVector SubFootDel = FVector(0,0,-CollisionHeight-4.f);
            if( !bZeroMove && GetLevel()->SingleLineCheck( Hit, this, Location + FootDel + Down, Location, TRACE_AllBlocking | TRACE_StopAtFirstHit) )
            {
                // Find exact location of ledge.
                FVector Back = Location - AccelDir * (CollisionRadius*1.5f);
                if( !GetLevel()->SingleLineCheck( Hit, this, Back + SubFootDel, Location + SubFootDel, TRACE_AllBlocking | TRACE_StopAtFirstHit) )
                {
                    FLOAT Cos = Hit.Normal | AccelDir;
                    if( Cos > MinAutoJumpCos )
                    {
                        // Crossed ledge this tick. See whether we'd really fall on ledge edge.
                        // Move player out to ledge location.
                        FLOAT t = Hit.Time;
                        FVector EdgeLoc = Back * t + Location * (1.f-t);

                        // Find where we fall, and where we jump.
                        FVector Start = EdgeLoc + AccelDir * (CollisionRadius*1.5f/Cos);
                        Predict( Hit, this, Start, Velocity, Extent, 2.f );
                        FVector Fall = Hit.Location;

                        Predict( Hit, this, EdgeLoc, Velocity + FVector(0,0,JumpZ), Extent, 2.f );
                        FVector Jump = Hit.Location;

                        if( Jump.Z - Fall.Z > AutoJumpThreshold )
                        {
                            // Jumping is better.
                            // Move back to edge location, then jump.
                            GetLevel()->MoveActor(this, EdgeLoc - Location, Rotation, Hit);
                            PPawn->eventDoJump(1.f);
                            remainingTime += timeTick * t;
                            physFalling(remainingTime, Iterations);
                            return;
                        }
                    }
                }
            }
        }