Function world_to_screen

src/SB/Game/zEntCruiseBubble.cpp:1492–1505

        }

        xVec3 world_to_screen(const xVec3& loc)
        {
            iCameraUpdatePos(globals.camera.lo_cam, &globals.camera.mat);

            xVec3 world_loc;
            xMat4x3* view_mat = (xMat4x3*)&globals.camera.lo_cam->viewMatrix;
            xMat4x3Toworld(&world_loc, view_mat, &loc);

            xVec3 screen_loc;
            F32 iz = 1.0f / world_loc.z;
            screen_loc.assign(world_loc.x * iz, world_loc.y * iz, 1.0f);

            return screen_loc;
        }

        S32 find_locked_target(const xVec3* target)
        {