- q_axis_angle( player->rb.q, (v3f){0.0f,1.0f,0.0f},
- atan2f( -dir[0], -dir[2] ) );
+ q_axis_angle( player->rb.q, (v3f){0.0f,1.0f,0.0f}, atan2f(-dir[0],-dir[2]) );
+ q_mul( player->qbasis, player->rb.q, player->rb.q );
+ q_normalize( player->rb.q );
+
+ q_mulv( player->rb.q, (v3f){0.0f,1.0f,0.0f}, s->state.cog );
+ v3_add( s->state.cog, player->rb.co, s->state.cog );