Many random fixes and landing gear

build_elf_objects.bat

@@ -17,14 +17,17 @@ popd
 
 @REM /DENET_DEBUG=1^
 clang -target x86_64-pc-windows-elf -c^
+  -DDEBUG^
   -I"thirdparty" -I"thirdparty\minilzo" -I"thirdparty\enet\include" -I"thirdparty\Chipmunk2D\include\chipmunk" -I"thirdparty\Chipmunk2D\include" -I"thirdparty\opus\include" -I"thirdparty\opus\src"^
-  %MUNKSRC%
+  %MUNKSRC%^
+  gamestate.c
+
 
 rmdir /S /Q elf_objects
 mkdir elf_objects
 move *.o elf_objects
 
-  @REM main.c gamestate.c server.c debugdraw.c^
-  @REM thirdparty\minilzo\minilzo.c^
-  @REM %OPUSLIB%
-  @REM thirdparty\enet\callbacks.c thirdparty\enet\compress.c thirdparty\enet\host.c thirdparty\enet\list.c thirdparty\enet\packet.c thirdparty\enet\peer.c thirdparty\enet\protocol.c thirdparty\enet\win32.c Ws2_32.lib winmm.lib^
+@REM main.c gamestate.c server.c debugdraw.c^
+@REM thirdparty\minilzo\minilzo.c^
+@REM %OPUSLIB%
+@REM thirdparty\enet\callbacks.c thirdparty\enet\compress.c thirdparty\enet\host.c thirdparty\enet\list.c thirdparty\enet\packet.c thirdparty\enet\peer.c thirdparty\enet\protocol.c thirdparty\enet\win32.c Ws2_32.lib winmm.lib^

buildsettings.h

@@ -14,7 +14,8 @@
 #define ASSERT_DO_POPUP_AND_CRASH
 // #define SERVER_ADDRESS "207.246.80.160"
 
-// #define PROFILING
+#define CONSOLE_CREATE
+#define PROFILING
 // Intensive profiling means profiling a lot of little tiny stuff. Not always enabled because tanks performance
 // #define INTENSIVE_PROFILING
 // #define DEBUG_RENDERING
@@ -22,11 +23,11 @@
 #define UNLOCK_ALL
 #define TIME_BETWEEN_WORLD_SAVE 1000000.0f
 // #define TIME_BETWEEN_WORLD_SAVE 1.0f
-#define INFINITE_RESOURCES
+// #define INFINITE_RESOURCES
 #define DEBUG_TOOLS
 #define CHIPMUNK_INTEGRITY_CHECK
 // #define FAT_THRUSTERS
-//#define NO_GRAVITY
+#define NO_GRAVITY
 // #define NO_SUNS
 
 #else
@@ -35,6 +36,7 @@
 
 // DANGER modifying these, make sure to change them back before releasing
 
+#define CONSOLE_ATTACH
 // #define PROFILING
 // #define SERVER_ADDRESS "127.0.0.1"
 #define SERVER_ADDRESS "207.246.80.160"

delete_this.c

@@ -0,0 +1,4 @@
+int myfunc()
+{
+    return 5;
+}

gamestate.c

@@ -409,7 +409,7 @@ LauncherTarget missile_launcher_target(GameState *gs, Entity *launcher)
 
 void destroy_constraints(cpBody *body, cpConstraint *constraint, void *data)
 {
-  ((Entity*)cpConstraintGetUserData(constraint))->landed_constraint = NULL;
+  ((Entity *)cpConstraintGetUserData(constraint))->landed_constraint = NULL;
   cpSpaceRemoveConstraint(cpBodyGetSpace(body), constraint);
   cpConstraintFree(constraint);
 }
@@ -430,6 +430,19 @@ void destroy_child_shape(cpBody *body, cpShape *shape, void *data)
   }
 }
 
+void entity_free_allocated(Entity *e)
+{
+#define MAYBE_FREE(variable, free_call) \
+  if (variable != NULL)                 \
+  {                                     \
+    free_call(variable);                \
+    variable = NULL;                    \
+  }
+  MAYBE_FREE(e->shape, cpShapeFree);
+  MAYBE_FREE(e->body, cpBodyFree);
+  MAYBE_FREE(e->landed_constraint, cpConstraintFree);
+}
+
 // Destroys the entity and puts its slot back into the free list. Doesn't obey game rules
 // like making sure grids don't have holes in them, for that you want entity_destroy.
 // *Does* free all owned memory/entities though, e.g grids free the boxes they own.
@@ -451,25 +464,20 @@ void entity_memory_free(GameState *gs, Entity *e)
   if (e->shape != NULL)
   {
     cpSpaceRemoveShape(gs->space, e->shape);
-    cpShapeFree(e->shape);
-    e->shape = NULL;
   }
   if (e->landed_constraint != NULL)
   {
     cpSpaceRemoveConstraint(gs->space, e->landed_constraint);
-    cpConstraintFree(e->landed_constraint);
-    e->landed_constraint = NULL;
   }
   if (e->body != NULL)
   {
     // need to do this here because body which constraint is attached to can be destroyed
-		// NOT TRUE: can't do this here because the handle to the constraint cannot be set to NULL. Constraints are freed by the entities that own them
-    cpBodyEachConstraint(e->body, destroy_constraints, NULL); 
+    // NOT TRUE: can't do this here because the handle to the constraint cannot be set to NULL. Constraints are freed by the entities that own them
+    cpBodyEachConstraint(e->body, destroy_constraints, NULL);
     cpBodyEachShape(e->body, destroy_child_shape, (void *)gs);
     cpSpaceRemoveBody(gs->space, e->body);
-    cpBodyFree(e->body);
-    e->body = NULL;
   }
+  entity_free_allocated(e);
   Entity *front_of_free_list = get_entity(gs, gs->free_list);
   if (front_of_free_list != NULL)
     flight_assert(!front_of_free_list->exists);
@@ -534,7 +542,7 @@ void create_body(GameState *gs, Entity *e)
 }
 
 // must always call this after creating a constraint
-void on_create_constraint(Entity *e, cpConstraint* c)
+void on_create_constraint(Entity *e, cpConstraint *c)
 {
   cpConstraintSetUserData(c, (cpDataPointer)e);
 }
@@ -595,29 +603,41 @@ static const cpShapeFilter FILTER_DEFAULT = {CP_NO_GROUP, DEFAULT, CP_ALL_CATEGO
 // size is (1/2 the width, 1/2 the height)
 void create_rectangle_shape(GameState *gs, Entity *e, Entity *parent, cpVect pos, cpVect size, double mass)
 {
-  // @Robust remove this garbage
-  if (e->shape != NULL)
+  PROFILE_SCOPE("Create rectangle shape")
   {
-    cpSpaceRemoveShape(gs->space, e->shape);
-    cpShapeFree(e->shape);
-    e->shape = NULL;
-  }
-
-  cpBB box = cpBBNew(-size.x + pos.x, -size.y + pos.y, size.x + pos.x, size.y + pos.y);
-  cpVect verts[4] = {
-      cpv(box.r, box.b),
-      cpv(box.r, box.t),
-      cpv(box.l, box.t),
-      cpv(box.l, box.b),
-  };
+    // @Robust remove this garbage
+    if (e->shape != NULL)
+    {
+      PROFILE_SCOPE("Freeing shape")
+      {
+        cpSpaceRemoveShape(gs->space, e->shape);
+        cpShapeFree(e->shape);
+        e->shape = NULL;
+      }
+    }
 
-  e->shape_size = size;
-  e->shape_parent_entity = get_id(gs, parent);
-  e->shape = (cpShape *)cpPolyShapeInitRaw(cpPolyShapeAlloc(), parent->body, 4, verts, 0.0); // this cast is done in chipmunk, not sure why it works
-  cpShapeSetUserData(e->shape, (void *)e);
-  cpShapeSetMass(e->shape, mass);
-  cpSpaceAddShape(gs->space, e->shape);
-  cpShapeSetFilter(e->shape, FILTER_DEFAULT);
+    cpBB box = cpBBNew(-size.x + pos.x, -size.y + pos.y, size.x + pos.x, size.y + pos.y);
+    cpVect verts[4] = {
+        cpv(box.r, box.b),
+        cpv(box.r, box.t),
+        cpv(box.l, box.t),
+        cpv(box.l, box.b),
+    };
+
+    e->shape_size = size;
+    e->shape_parent_entity = get_id(gs, parent);
+    e->shape = (cpShape *)cpPolyShapeInitRaw(cpPolyShapeAlloc(), parent->body, 4, verts, 0.0); // this cast is done in chipmunk, not sure why it works
+    cpShapeSetUserData(e->shape, (void *)e);
+    PROFILE_SCOPE("Setting mass")
+    {
+      cpShapeSetMass(e->shape, mass);
+    }
+    PROFILE_SCOPE("Adding shape")
+    {
+      cpSpaceAddShape(gs->space, e->shape);
+    }
+    cpShapeSetFilter(e->shape, FILTER_DEFAULT);
+  }
 }
 void create_circle_shape(GameState *gs, Entity *e, double radius)
 {
@@ -815,24 +835,22 @@ bool could_learn_from_scanner(Player *for_player, Entity *box)
   return (for_player->box_unlocks | box->blueprints_learned) != for_player->box_unlocks;
 }
 
+bool box_enterable(Entity *box)
+{
+  return box->box_type == BoxMedbay || box->box_type == BoxCockpit;
+}
+
 bool box_interactible(GameState *gs, Player *for_player, Entity *box)
 {
   flight_assert(box->is_box);
 
-  if (box->box_type == BoxCockpit || box->box_type == BoxMedbay)
+  if (box->box_type == BoxMerge)
   {
-    return true;
+    return merge_box_is_merged(gs, box);
   }
   else
   {
-    if (box->box_type == BoxMerge)
-    {
-      return merge_box_is_merged(gs, box);
-    }
-    else
-    {
-      return false;
-    }
+    return false;
   }
 }
 
@@ -1018,9 +1036,6 @@ static void on_damage(cpArbiter *arb, cpSpace *space, cpDataPointer userData)
     }
   }
 
-  // if(entity_a->is_missile) {getPointFunc = cpArbiterGetPointA;
-  // if(entity_b->is_missile) getPointFunc = cpArbiterGetPointB;
-
   double damage = cpvlength((cpArbiterTotalImpulse(arb))) * COLLISION_DAMAGE_SCALING;
 
   if (entity_a->is_box && entity_a->box_type == BoxExplosive)
@@ -1030,45 +1045,45 @@ static void on_damage(cpArbiter *arb, cpSpace *space, cpDataPointer userData)
 
   if (damage > 0.05)
   {
-    // Log("Collision with damage %f\n", damage);
     entity_a->damage += damage;
     entity_b->damage += damage;
   }
-
-  // b must be the key passed into the post step removed, the key is cast into its shape
-  // cpSpaceAddPostStepCallback(space, (cpPostStepFunc)postStepRemove, b, NULL);
-  // cpSpaceAddPostStepCallback(space, (cpPostStepFunc)postStepRemove, a, NULL);
 }
 
 // must be called with zero initialized game state, because copies the server side computing!
 void initialize(GameState *gs, void *entity_arena, size_t entity_arena_size)
 {
-  bool is_server_side = gs->server_side_computing;
-  *gs = (GameState){0};
-  memset(entity_arena, 0, entity_arena_size); // SUPER critical. Random vals in the entity data causes big problem
-  gs->entities = (Entity *)entity_arena;
-  gs->max_entities = (unsigned int)(entity_arena_size / sizeof(Entity));
-  gs->space = cpSpaceNew();
-  cpSpaceSetUserData(gs->space, (cpDataPointer)gs); // needed in the handler
-  cpCollisionHandler *handler = cpSpaceAddCollisionHandler(gs->space, 0, 0);
-  handler->postSolveFunc = on_damage;
-  gs->server_side_computing = is_server_side;
+  PROFILE_SCOPE("Initialize")
+  {
+    bool is_server_side = gs->server_side_computing;
+    *gs = (GameState){0};
+    gs->entities = (Entity *)entity_arena;
+    gs->max_entities = (unsigned int)(entity_arena_size / sizeof(Entity));
+    gs->space = cpSpaceNew();
+    cpSpaceSetUserData(gs->space, (cpDataPointer)gs); // needed in the handler
+    cpCollisionHandler *handler = cpSpaceAddCollisionHandler(gs->space, 0, 0);
+    handler->postSolveFunc = on_damage;
+    gs->server_side_computing = is_server_side;
+  }
 }
 void destroy(GameState *gs)
 {
-  // can't zero out gs data because the entity memory arena is reused
-  // on deserialization
-  for (size_t i = 0; i < gs->cur_next_entity; i++)
+  PROFILE_SCOPE("Destroy")
   {
-    if (gs->entities[i].exists)
+    // can't zero out gs data because the entity memory arena is reused
+    // on deserialization
+    for (size_t i = 0; i < gs->cur_next_entity; i++)
     {
-      entity_memory_free(gs, &gs->entities[i]);
-      gs->entities[i] = (Entity){0};
+      if (gs->entities[i].exists)
+      {
+        entity_free_allocated(&gs->entities[i]);
+        gs->entities[i] = (Entity){0}; // IMPORTANT expects zeroed for initialize
+      }
     }
+    cpSpaceFree(gs->space);
+    gs->space = NULL;
+    gs->cur_next_entity = 0;
   }
-  cpSpaceFree(gs->space);
-  gs->space = NULL;
-  gs->cur_next_entity = 0;
 }
 // center of mass, not the literal position
 cpVect grid_com(Entity *grid)
@@ -1399,6 +1414,7 @@ SerMaybeFailure ser_inputframe(SerState *ser, InputFrame *i)
   SER_MAYBE_RETURN(ser_entityid(ser, &i->invite_this_player));
 
   SER_VAR(&i->seat_action);
+  SER_VAR(&i->interact_action);
   SER_MAYBE_RETURN(ser_fV2(ser, &i->hand_pos));
 
   SER_VAR(&i->dobuild);
@@ -1436,235 +1452,207 @@ SerMaybeFailure ser_player(SerState *ser, Player *p)
 
 SerMaybeFailure ser_entity(SerState *ser, GameState *gs, Entity *e)
 {
-  SER_VAR(&e->no_save_to_disk);
-  SER_VAR(&e->always_visible);
-  SER_VAR(&e->generation);
-  SER_MAYBE_RETURN(ser_f(ser, &e->damage));
-
-  bool has_body = ser->serializing && e->body != NULL;
-  SER_VAR(&has_body);
-
-  if (has_body)
-  {
-    struct BodyData body_data;
-    if (ser->serializing)
-      populate(e->body, &body_data);
-    SER_MAYBE_RETURN(ser_bodydata(ser, &body_data));
-    if (!ser->serializing)
-    {
-      create_body(gs, e);
-      update_from(e->body, &body_data);
-    }
-  }
-
-  bool has_shape = ser->serializing && e->shape != NULL;
-  SER_VAR(&has_shape);
-  if (has_shape)
+  PROFILE_SCOPE("Ser entity")
   {
-    SER_VAR(&e->is_circle_shape);
-    if (e->is_circle_shape)
-    {
-      SER_MAYBE_RETURN(ser_f(ser, &e->shape_radius));
-    }
-    else
-    {
-      SER_MAYBE_RETURN(ser_fV2(ser, &e->shape_size));
-    }
-
-    SER_MAYBE_RETURN(ser_entityid(ser, &e->shape_parent_entity));
-    Entity *parent = get_entity(gs, e->shape_parent_entity);
-    SER_ASSERT(parent != NULL);
-
-    cpVect shape_pos;
-    if (ser->serializing)
-      shape_pos = entity_shape_pos(e);
-    SER_MAYBE_RETURN(ser_fV2(ser, &shape_pos));
+    SER_VAR(&e->no_save_to_disk);
+    SER_VAR(&e->always_visible);
+    SER_VAR(&e->generation);
+    SER_MAYBE_RETURN(ser_f(ser, &e->damage));
 
-    double shape_mass;
-    if (ser->serializing)
-      shape_mass = entity_shape_mass(e);
-    SER_VAR(&shape_mass);
-    SER_ASSERT(!isnan(shape_mass));
+    bool has_body = ser->serializing && e->body != NULL;
+    SER_VAR(&has_body);
 
-    cpShapeFilter filter;
-    if (ser->serializing)
+    if (has_body)
     {
-      filter = cpShapeGetFilter(e->shape);
+      struct BodyData body_data;
+      if (ser->serializing)
+        populate(e->body, &body_data);
+      SER_MAYBE_RETURN(ser_bodydata(ser, &body_data));
+      if (!ser->serializing)
+      {
+        create_body(gs, e);
+        update_from(e->body, &body_data);
+      }
     }
-    SER_VAR(&filter.categories);
-    SER_VAR(&filter.group);
-    SER_VAR(&filter.mask);
-    if (!ser->serializing)
+
+    bool has_shape = ser->serializing && e->shape != NULL;
+    SER_VAR(&has_shape);
+    if (has_shape)
     {
+      SER_VAR(&e->is_circle_shape);
       if (e->is_circle_shape)
       {
-        create_circle_shape(gs, e, e->shape_radius);
+        SER_MAYBE_RETURN(ser_f(ser, &e->shape_radius));
       }
       else
       {
-        create_rectangle_shape(gs, e, parent, shape_pos, e->shape_size, shape_mass);
+        SER_MAYBE_RETURN(ser_fV2(ser, &e->shape_size));
       }
-      cpShapeSetFilter(e->shape, filter);
-    }
-  }
 
-  if (!ser->save_or_load_from_disk)
-  {
-    SER_MAYBE_RETURN(ser_f(ser, &e->time_was_last_cloaked));
-  }
+      SER_MAYBE_RETURN(ser_entityid(ser, &e->shape_parent_entity));
+      Entity *parent = get_entity(gs, e->shape_parent_entity);
+      SER_ASSERT(parent != NULL);
 
-  SER_VAR(&e->owning_squad);
+      cpVect shape_pos;
+      if (ser->serializing)
+        shape_pos = entity_shape_pos(e);
+      SER_MAYBE_RETURN(ser_fV2(ser, &shape_pos));
 
-  SER_VAR(&e->is_player);
-  if (e->is_player)
-  {
-    SER_ASSERT(e->no_save_to_disk);
+      double shape_mass;
+      if (ser->serializing)
+        shape_mass = entity_shape_mass(e);
+      SER_VAR(&shape_mass);
+      SER_ASSERT(!isnan(shape_mass));
 
-    SER_MAYBE_RETURN(ser_entityid(ser, &e->currently_inside_of_box));
-    SER_VAR(&e->squad_invited_to);
+      cpShapeFilter filter;
+      if (ser->serializing)
+      {
+        filter = cpShapeGetFilter(e->shape);
+      }
+      SER_VAR(&filter.categories);
+      SER_VAR(&filter.group);
+      SER_VAR(&filter.mask);
+      if (!ser->serializing)
+      {
+        if (e->is_circle_shape)
+        {
+          create_circle_shape(gs, e, e->shape_radius);
+        }
+        else
+        {
+          create_rectangle_shape(gs, e, parent, shape_pos, e->shape_size, shape_mass);
+        }
+        cpShapeSetFilter(e->shape, filter);
+      }
+    }
 
-    if (ser->version < VNoGold)
+    if (!ser->save_or_load_from_disk)
     {
-      double goldness;
-      SER_VAR_NAME(&goldness, "&e->goldness");
+      SER_MAYBE_RETURN(ser_f(ser, &e->time_was_last_cloaked));
     }
-  }
 
-  SER_VAR(&e->is_explosion);
-  if (e->is_explosion)
-  {
-    SER_MAYBE_RETURN(ser_V2(ser, &e->explosion_pos));
-    SER_MAYBE_RETURN(ser_V2(ser, &e->explosion_vel));
-    SER_MAYBE_RETURN(ser_f(ser, &e->explosion_progress));
-    SER_MAYBE_RETURN(ser_f(ser, &e->explosion_push_strength));
-    SER_MAYBE_RETURN(ser_f(ser, &e->explosion_radius));
-  }
+    SER_VAR(&e->owning_squad);
 
-  SER_VAR(&e->is_sun);
-  if (e->is_sun)
-  {
-    SER_MAYBE_RETURN(ser_V2(ser, &e->sun_vel));
-    SER_MAYBE_RETURN(ser_V2(ser, &e->sun_pos));
-    SER_MAYBE_RETURN(ser_f(ser, &e->sun_mass));
-    SER_MAYBE_RETURN(ser_f(ser, &e->sun_radius));
-    if (ser->version >= VSafeSun)
-      SER_VAR(&e->sun_is_safe);
-  }
+    SER_VAR(&e->is_player);
+    if (e->is_player)
+    {
+      SER_ASSERT(e->no_save_to_disk);
 
-  SER_VAR(&e->is_grid);
-  if (e->is_grid)
-  {
-    SER_MAYBE_RETURN(ser_f(ser, &e->total_energy_capacity));
-    SER_MAYBE_RETURN(ser_entityid(ser, &e->boxes));
-  }
+      SER_MAYBE_RETURN(ser_entityid(ser, &e->currently_inside_of_box));
+      SER_VAR(&e->squad_invited_to);
 
-  SER_VAR(&e->is_missile);
-  if (e->is_missile)
-  {
-    SER_MAYBE_RETURN(ser_f(ser, &e->time_burned_for));
-  }
+      if (ser->version < VNoGold)
+      {
+        double goldness;
+        SER_VAR_NAME(&goldness, "&e->goldness");
+      }
+    }
 
-  SER_VAR(&e->is_orb);
-  if (e->is_orb)
-  {
-  }
+    SER_VAR(&e->is_explosion);
+    if (e->is_explosion)
+    {
+      SER_MAYBE_RETURN(ser_V2(ser, &e->explosion_pos));
+      SER_MAYBE_RETURN(ser_V2(ser, &e->explosion_vel));
+      SER_MAYBE_RETURN(ser_f(ser, &e->explosion_progress));
+      SER_MAYBE_RETURN(ser_f(ser, &e->explosion_push_strength));
+      SER_MAYBE_RETURN(ser_f(ser, &e->explosion_radius));
+    }
 
-  SER_VAR(&e->is_box);
-  if (e->is_box)
-  {
-    SER_VAR(&e->box_type);
-    SER_VAR(&e->is_platonic);
+    SER_VAR(&e->is_sun);
+    if (e->is_sun)
+    {
+      SER_MAYBE_RETURN(ser_V2(ser, &e->sun_vel));
+      SER_MAYBE_RETURN(ser_V2(ser, &e->sun_pos));
+      SER_MAYBE_RETURN(ser_f(ser, &e->sun_mass));
+      SER_MAYBE_RETURN(ser_f(ser, &e->sun_radius));
+      if (ser->version >= VSafeSun)
+        SER_VAR(&e->sun_is_safe);
+    }
 
-    SER_VAR(&e->owning_squad);
+    SER_VAR(&e->is_grid);
+    if (e->is_grid)
+    {
+      SER_MAYBE_RETURN(ser_f(ser, &e->total_energy_capacity));
+      SER_MAYBE_RETURN(ser_entityid(ser, &e->boxes));
+    }
 
-    SER_MAYBE_RETURN(ser_entityid(ser, &e->next_box));
-    SER_MAYBE_RETURN(ser_entityid(ser, &e->prev_box));
-    SER_VAR(&e->compass_rotation);
-    SER_VAR(&e->indestructible);
-    switch (e->box_type)
+    SER_VAR(&e->is_missile);
+    if (e->is_missile)
     {
-    case BoxMedbay:
-    case BoxCockpit:
-      if (!ser->save_or_load_from_disk)
-        SER_MAYBE_RETURN(ser_entityid(ser, &e->player_who_is_inside_of_me));
-      break;
-    case BoxThruster:
-      SER_MAYBE_RETURN(ser_f(ser, &e->thrust));
-      SER_MAYBE_RETURN(ser_f(ser, &e->wanted_thrust));
-      break;
-    case BoxGyroscope:
-      SER_MAYBE_RETURN(ser_f(ser, &e->thrust));
-      SER_MAYBE_RETURN(ser_f(ser, &e->wanted_thrust));
-      SER_MAYBE_RETURN(ser_f(ser, &e->gyrospin_angle));
-      SER_MAYBE_RETURN(ser_f(ser, &e->gyrospin_velocity));
-      break;
-    case BoxBattery:
-      SER_MAYBE_RETURN(ser_f(ser, &e->energy_used));
-      break;
-    case BoxSolarPanel:
-      SER_MAYBE_RETURN(ser_f(ser, &e->sun_amount));
-      break;
-    case BoxScanner:
-      SER_MAYBE_RETURN(ser_entityid(ser, &e->currently_scanning));
-      SER_MAYBE_RETURN(ser_f(ser, &e->currently_scanning_progress));
-      SER_VAR(&e->blueprints_learned);
-      SER_MAYBE_RETURN(ser_f(ser, &e->scanner_head_rotate));
-      for (int i = 0; i < SCANNER_MAX_PLATONICS; i++)
-      {
-        SER_MAYBE_RETURN(ser_V2(ser, &e->detected_platonics[i].direction));
-        SER_MAYBE_RETURN(ser_f(ser, &e->detected_platonics[i].intensity));
-      }
-      for (int i = 0; i < SCANNER_MAX_POINTS; i++)
-      {
-        SER_VAR(&e->scanner_points[i]);
-      }
-      break;
-    case BoxCloaking:
-      SER_MAYBE_RETURN(ser_f(ser, &e->cloaking_power));
-      break;
-    case BoxMissileLauncher:
-      SER_MAYBE_RETURN(ser_f(ser, &e->missile_construction_charge));
-      break;
-    case BoxLandingGear:
+      SER_MAYBE_RETURN(ser_f(ser, &e->time_burned_for));
+    }
+
+    SER_VAR(&e->is_orb);
+    if (e->is_orb)
     {
-      bool is_null = e->landed_constraint == NULL;
-      SER_VAR(&is_null);
-      if (!is_null)
+    }
+
+    SER_VAR(&e->is_box);
+    if (e->is_box)
+    {
+      SER_VAR(&e->box_type);
+      SER_VAR(&e->is_platonic);
+
+      SER_VAR(&e->owning_squad);
+
+      SER_MAYBE_RETURN(ser_entityid(ser, &e->next_box));
+      SER_MAYBE_RETURN(ser_entityid(ser, &e->prev_box));
+      SER_VAR(&e->compass_rotation);
+      SER_VAR(&e->indestructible);
+      switch (e->box_type)
       {
-        EntityID from = {0};
-        EntityID to = {0};
-        cpVect pin = {0};
-        if (ser->serializing)
+      case BoxMedbay:
+      case BoxCockpit:
+        if (!ser->save_or_load_from_disk)
+          SER_MAYBE_RETURN(ser_entityid(ser, &e->player_who_is_inside_of_me));
+        break;
+      case BoxThruster:
+        SER_MAYBE_RETURN(ser_f(ser, &e->thrust));
+        SER_MAYBE_RETURN(ser_f(ser, &e->wanted_thrust));
+        break;
+      case BoxGyroscope:
+        SER_MAYBE_RETURN(ser_f(ser, &e->thrust));
+        SER_MAYBE_RETURN(ser_f(ser, &e->wanted_thrust));
+        SER_MAYBE_RETURN(ser_f(ser, &e->gyrospin_angle));
+        SER_MAYBE_RETURN(ser_f(ser, &e->gyrospin_velocity));
+        break;
+      case BoxBattery:
+        SER_MAYBE_RETURN(ser_f(ser, &e->energy_used));
+        break;
+      case BoxSolarPanel:
+        SER_MAYBE_RETURN(ser_f(ser, &e->sun_amount));
+        break;
+      case BoxScanner:
+        SER_MAYBE_RETURN(ser_entityid(ser, &e->currently_scanning));
+        SER_MAYBE_RETURN(ser_f(ser, &e->currently_scanning_progress));
+        SER_VAR(&e->blueprints_learned);
+        SER_MAYBE_RETURN(ser_f(ser, &e->scanner_head_rotate));
+        for (int i = 0; i < SCANNER_MAX_PLATONICS; i++)
         {
-          from = get_id(gs, cp_body_entity(cpConstraintGetBodyA(e->landed_constraint)));
-          to = get_id(gs, cp_body_entity(cpConstraintGetBodyB(e->landed_constraint)));
-          pin = cpPivotJointGetAnchorA(e->landed_constraint);
+          SER_MAYBE_RETURN(ser_V2(ser, &e->detected_platonics[i].direction));
+          SER_MAYBE_RETURN(ser_f(ser, &e->detected_platonics[i].intensity));
         }
-        SER_MAYBE_RETURN(ser_entityid(ser, &from));
-        SER_MAYBE_RETURN(ser_entityid(ser, &to));
-        SER_MAYBE_RETURN(ser_V2(ser, &pin));
-        if (!ser->serializing)
+        for (int i = 0; i < SCANNER_MAX_POINTS; i++)
         {
-          Entity *from_entity = get_entity(gs, from);
-          Entity *to_entity = get_entity(gs, to);
-          if (from_entity == NULL || to_entity == NULL)
-          {
-          }
-          else
-          {
-            e->landed_constraint = cpPivotJointNew(from_entity->body, to_entity->body, pin);
-            cpSpaceAddConstraint(gs->space, e->landed_constraint);
-            on_create_constraint(e, e->landed_constraint);
-          }
+          SER_VAR(&e->scanner_points[i]);
         }
+        break;
+      case BoxCloaking:
+        SER_MAYBE_RETURN(ser_f(ser, &e->cloaking_power));
+        break;
+      case BoxMissileLauncher:
+        SER_MAYBE_RETURN(ser_f(ser, &e->missile_construction_charge));
+        break;
+      case BoxLandingGear:
+      {
+        SER_MAYBE_RETURN(ser_entityid(ser, &e->shape_to_land_on));
+        break;
+      }
+      default:
+        break;
       }
-      break;
-    }
-    default:
-      break;
     }
   }
-
   return ser_ok;
 }
 
@@ -2571,6 +2559,7 @@ void create_initial_world(GameState *gs)
 #endif // debug world
 }
 
+// does not actually set seat in variables so can be used on respawn
 void exit_seat(GameState *gs, Entity *seat_in, Entity *p)
 {
   cpVect pilot_seat_exit_spot = cpvadd(entity_pos(seat_in), cpvmult(box_facing_vector(seat_in), BOX_SIZE));
@@ -2727,7 +2716,31 @@ void process(struct GameState *gs, double dt)
         p->damage = 0.0;
 #endif
 #if 1
+
         cpVect world_hand_pos = get_world_hand_pos(gs, &player->input, p);
+        if (player->input.interact_action)
+        {
+          player->input.interact_action = false;
+          cpPointQueryInfo query_info = {0};
+          cpShape *result = cpSpacePointQueryNearest(gs->space, (world_hand_pos), 0.1, FILTER_ONLY_BOXES, &query_info);
+          if (result != NULL)
+          {
+            Entity *potential_seat = cp_shape_entity(result);
+            flight_assert(potential_seat->is_box);
+
+            // IMPORTANT: if you update these, make sure you update box_interactible so
+            // the button prompt still works
+            if (potential_seat->box_type == BoxMerge) // disconnect!
+            {
+              potential_seat->wants_disconnect = true;
+              grid_correct_for_holes(gs, box_grid(potential_seat));
+              flight_assert(potential_seat->exists);
+              flight_assert(potential_seat->is_box);
+              flight_assert(potential_seat->box_type == BoxMerge);
+            }
+          }
+        }
+
         if (player->input.seat_action)
         {
           player->input.seat_action = false; // "handle" the input
@@ -2740,21 +2753,8 @@ void process(struct GameState *gs, double dt)
             {
               Entity *potential_seat = cp_shape_entity(result);
               flight_assert(potential_seat->is_box);
-
-              // IMPORTANT: if you update these, make sure you update box_interactible so
+              // IMPORTANT: if you update these, make sure you update box_enterable so
               // the button prompt still works
-              if (potential_seat->box_type == BoxScanner) // learn everything from the scanner
-              {
-                player->box_unlocks |= potential_seat->blueprints_learned;
-              }
-              if (potential_seat->box_type == BoxMerge) // disconnect!
-              {
-                potential_seat->wants_disconnect = true;
-                grid_correct_for_holes(gs, box_grid(potential_seat));
-                flight_assert(potential_seat->exists);
-                flight_assert(potential_seat->is_box);
-                flight_assert(potential_seat->box_type == BoxMerge);
-              }
               if (potential_seat->box_type == BoxCockpit || potential_seat->box_type == BoxMedbay)
               {
                 // don't let players get inside of cockpits that somebody else is already inside of
@@ -2934,6 +2934,7 @@ void process(struct GameState *gs, double dt)
     PROFILE_SCOPE("process entities")
     {
       ENTITIES_ITER(gs, e)
+      if (!e->flag_for_destruction)
       {
         if (e->body != NULL && cpvlengthsq((entity_pos(e))) > (INSTANT_DEATH_DISTANCE_FROM_CENTER * INSTANT_DEATH_DISTANCE_FROM_CENTER))
         {
@@ -3198,6 +3199,8 @@ void process(struct GameState *gs, double dt)
           // PROFILE_SCOPE("Grid processing")
           {
             Entity *grid = e;
+            float e; // turn all references to e into errors
+            (void)e;
             // calculate how much energy solar panels provide
             double energy_to_add = 0.0;
             BOXES_ITER(gs, cur_box, grid)
@@ -3239,6 +3242,7 @@ void process(struct GameState *gs, double dt)
             // use the energy, stored in the batteries, in various boxes
             BOXES_ITER(gs, cur_box, grid)
             {
+
               if (cur_box->box_type == BoxThruster)
               {
                 cur_box->energy_effectiveness = batteries_use_energy(gs, grid, &non_battery_energy_left_over, cur_box->wanted_thrust * THRUSTER_ENERGY_USED_PER_SECOND * dt);
@@ -3494,8 +3498,49 @@ void process(struct GameState *gs, double dt)
               }
               if (cur_box->box_type == BoxLandingGear)
               {
-                if (cur_box->landed_constraint == NULL)
+                cpVect landing_point = cpvadd(entity_pos(cur_box), cpvmult(box_facing_vector(cur_box), BOX_SIZE / 2.0));
+                Entity *must_have_shape = get_entity(gs, cur_box->shape_to_land_on);
+                bool want_have_constraint = true;
+                if (want_have_constraint)
+                  want_have_constraint &= must_have_shape != NULL;
+                if (want_have_constraint)
+                  want_have_constraint &= must_have_shape->shape != NULL;
+                if (want_have_constraint)
+                  want_have_constraint &= cpShapeGetBody(must_have_shape->shape) != NULL;
+                if (want_have_constraint)
+                  want_have_constraint &= cpvdist(entity_pos(must_have_shape), landing_point) < BOX_SIZE + LANDING_GEAR_MAX_DIST;
+
+#define DELETE_CONSTRAINT(constraint)               \
+  {                                                 \
+    cpSpaceRemoveConstraint(gs->space, constraint); \
+    cpConstraintFree(constraint);                   \
+    constraint = NULL;                              \
+  }
+                if (want_have_constraint)
+                {
+                  flight_assert(must_have_shape != NULL);
+                  cpBody *body_a = box_grid(cur_box)->body;
+                  cpBody *body_b = cpShapeGetBody(must_have_shape->shape);
+                  if (cur_box->landed_constraint != NULL && (cpConstraintGetBodyA(cur_box->landed_constraint) != body_a || cpConstraintGetBodyB(cur_box->landed_constraint) != body_b))
+                  {
+                    DELETE_CONSTRAINT(cur_box->landed_constraint);
+                  }
+                  if (cur_box->landed_constraint == NULL)
+                  {
+                    cur_box->landed_constraint = cpPivotJointNew(body_a, body_b, landing_point);
+                    cpSpaceAddConstraint(gs->space, cur_box->landed_constraint);
+                    on_create_constraint(cur_box, cur_box->landed_constraint);
+                  }
+                }
+                else
                 {
+                  if (cur_box->landed_constraint != NULL)
+                  {
+                    DELETE_CONSTRAINT(cur_box->landed_constraint);
+                  }
+                  cur_box->shape_to_land_on = (EntityID){0};
+
+                  // maybe see something to land on
                   cpVect along = box_facing_vector(cur_box);
                   cpVect from = cpvadd(entity_pos(cur_box), cpvmult(along, BOX_SIZE / 2.0 + 0.03));
                   cpVect to = cpvadd(from, cpvmult(along, LANDING_GEAR_MAX_DIST));
@@ -3504,12 +3549,7 @@ void process(struct GameState *gs, double dt)
                   cpShape *found = cpSpaceSegmentQueryFirst(gs->space, from, to, 0.0, FILTER_DEFAULT, &query_result);
                   if (found != NULL && cpShapeGetBody(found) != box_grid(cur_box)->body)
                   {
-                    cpVect anchor = cpvadd(entity_pos(cur_box), cpvmult(along, BOX_SIZE / 2.0));
-                    cpBody *a = box_grid(cur_box)->body;
-                    cpBody *b = cpShapeGetBody(found);
-                    cur_box->landed_constraint = cpPivotJointNew(a, b, anchor);
-                    cpSpaceAddConstraint(gs->space, cur_box->landed_constraint);
-                    on_create_constraint(cur_box, cur_box->landed_constraint);
+                    cur_box->shape_to_land_on = get_id(gs, cp_shape_entity(found));
                   }
                 }
               }

main.c

@@ -76,7 +76,6 @@ static double dilating_time_factor = 1.0;
 
 static bool build_pressed = false;
 static double time_to_process = 0.0;
-static bool interact_pressed = false;
 #define MAX_MOUSEBUTTON (SAPP_MOUSEBUTTON_MIDDLE + 1)
 static bool mousedown[MAX_MOUSEBUTTON] = {0};
 typedef struct MousePressed
@@ -141,6 +140,7 @@ static sg_image image_orb_frozen;
 static sg_image image_radardot;
 static sg_image image_landing_gear;
 static sg_image image_pip;
+static sg_image image_enter_exit;
 
 static sg_image fire_rendertarget;
 static sg_pass fire_pass;
@@ -693,7 +693,7 @@ static void init(void)
     Log("Initialized audio\n");
   }
 
-  Entity *entity_data = malloc(sizeof *entity_data * MAX_ENTITIES);
+  Entity *entity_data = calloc(1, sizeof *entity_data * MAX_ENTITIES);
   initialize(&gs, entity_data, sizeof *entity_data * MAX_ENTITIES);
 
   sg_desc sgdesc = {.context = sapp_sgcontext()};
@@ -859,6 +859,7 @@ static void init(void)
     image_radardot = load_image("loaded/radardot.png");
     image_landing_gear = load_image("loaded/landing_gear.png");
     image_pip = load_image("loaded/pip.png");
+    image_enter_exit = load_image("loaded/enter_exit.png");
   }
 
   // socket initialization
@@ -1063,9 +1064,12 @@ static void ui(bool draw, double dt, double width, double height)
 
   // draw pick new box type menu
   static double pick_opacity = 0.0;
+  static bool choosing_flags = false; // modifies choosing flags in pick box type modal
   {
     if (keypressed[SAPP_KEYCODE_ESCAPE].pressed)
       picking_new_boxtype = false;
+    if(picking_new_boxtype)
+      choosing_flags = false;
     AABB pick_modal = (AABB){
         .x = width * 0.25,
         .y = height * 0.25,
@@ -1073,19 +1077,10 @@ static void ui(bool draw, double dt, double width, double height)
         .height = height * 0.5,
     };
     pick_opacity = lerp(pick_opacity, picking_new_boxtype ? 1.0 : 0.0, dt * 7.0);
-    if (picking_new_boxtype)
+    if (picking_new_boxtype && build_pressed && !has_point(pick_modal, mouse_pos))
     {
-      if (build_pressed)
-      {
-        if (has_point(pick_modal, mouse_pos))
-        {
-        }
-        else
-        {
-          build_pressed = false;
-          picking_new_boxtype = false;
-        }
-      }
+      build_pressed = false;
+      picking_new_boxtype = false;
     }
     static double item_scaling[ARRLEN(boxes)] = {1.0};
     {
@@ -1157,6 +1152,10 @@ static void ui(bool draw, double dt, double width, double height)
         cur_column++;
       }
     }
+    if (picking_new_boxtype && build_pressed && has_point(pick_modal, mouse_pos))
+    {
+      build_pressed = false; // modal handles the input
+    }
   }
 
   // draw squad invite
@@ -1165,8 +1164,7 @@ static void ui(bool draw, double dt, double width, double height)
   static double yes_size = 50.0;
   static double no_size = 50.0;
   {
-    bool invited =
-        myentity() != NULL && myentity()->squad_invited_to != SquadNone;
+    bool invited = myentity() != NULL && myentity()->squad_invited_to != SquadNone;
     double size = 200.0;
     double x_center = 0.75 * width;
     double x = x_center - size / 2.0;
@@ -1293,7 +1291,6 @@ static void ui(bool draw, double dt, double width, double height)
   static cpVect flag_pos[SquadLast] = {0};
   static double flag_rot[SquadLast] = {0};
   static double flag_scaling_increase[SquadLast] = {0};
-  static bool choosing_flags = false;
   const double flag_padding = 70.0;
   const double center_panel_height = 200.0;
   static double center_panel_width = 0.0;
@@ -1693,7 +1690,8 @@ static void frame(void)
     }
 
     build_pressed = mousepressed[SAPP_MOUSEBUTTON_LEFT].pressed;
-    interact_pressed = mousepressed[SAPP_MOUSEBUTTON_RIGHT].pressed;
+    bool interact_pressed = mousepressed[SAPP_MOUSEBUTTON_RIGHT].pressed;
+    bool seat_pressed = keypressed[SAPP_KEYCODE_F].pressed;
 
     // networking
     PROFILE_SCOPE("networking")
@@ -1922,7 +1920,10 @@ static void frame(void)
         }
 
         if (interact_pressed)
-          cur_input_frame.seat_action = interact_pressed;
+          cur_input_frame.interact_action = interact_pressed;
+
+        if (seat_pressed)
+          cur_input_frame.seat_action = seat_pressed;
 
         cur_input_frame.hand_pos = local_hand_pos;
         if (take_over_squad >= 0)
@@ -2409,7 +2410,9 @@ static void frame(void)
                   set_color_values(1.0, 1.0, 1.0, 1.0 - b->sun_amount);
                 }
 
-                if (myplayer() != NULL && box_interactible(&gs, myplayer(), b))
+                bool interactible = box_interactible(&gs, myplayer(), b);
+                bool enterable = box_enterable(b);
+                if (myplayer() != NULL && interactible || enterable)
                 {
                   if (box_has_point((BoxCentered){
                                         .pos = entity_pos(b),
@@ -2424,7 +2427,15 @@ static void frame(void)
                     {
                       pipeline_scope(goodpixel_pipeline)
                       {
-                        sgp_set_image(0, image_rightclick);
+                        if (interactible)
+                        {
+                          sgp_set_image(0, image_rightclick);
+                        }
+                        else
+                        {
+                          flight_assert(enterable);
+                          sgp_set_image(0, image_enter_exit);
+                        }
                         cpVect draw_at = cpvadd(entity_pos(b), cpv(BOX_SIZE, 0));
                         rotate_at(-entity_rotation(b) - rotangle(b->compass_rotation), draw_at.x, draw_at.y);
                         draw_texture_centered(draw_at, BOX_SIZE + sin(exec_time * 5.0) * BOX_SIZE * 0.1);
@@ -2457,7 +2468,7 @@ static void frame(void)
                 else
                 {
                   pipeline_scope(goodpixel_pipeline)
-                      draw_texture_centered(entity_pos(b), BOX_SIZE);
+                    draw_texture_centered(entity_pos(b), BOX_SIZE);
                 }
                 sgp_reset_image(0);
 
@@ -2792,7 +2803,10 @@ void cleanup(void)
   server_info.should_quit = true;
   ma_mutex_unlock(&server_info.info_mutex);
   WaitForSingleObject(server_thread_handle, INFINITE);
-
+  
+  destroy(&gs);
+  free(gs.entities);
+  
   end_profiling_mythread();
   end_profiling();
 
@@ -2804,9 +2818,7 @@ void cleanup(void)
 
   opus_encoder_destroy(enc);
   opus_decoder_destroy(dec);
-
-  destroy(&gs);
-  free(gs.entities);
+  
   sgp_shutdown();
   sg_shutdown();
   enet_deinitialize();
@@ -2945,7 +2957,12 @@ sapp_desc sokol_main(int argc, char *argv[])
       .window_title = "Flight Not Hosting",
       .icon.sokol_default = true,
       .event_cb = event,
+  #ifdef CONSOLE_CREATE
+      .win32_console_create = true,
+  #endif
+  #ifdef CONSOLE_ATTACH
       .win32_console_attach = true,
+  #endif
       .sample_count = 4, // anti aliasing
   };
 }

profiling.h

@@ -47,7 +47,7 @@ void init_profiling_mythread(uint32_t id)
   my_thread_id = id;
   if (buffer_data != NULL)
   {
-    *(int *)0 = 0;
+    __debugbreak();
   }
   buffer_data = malloc(PROFILING_BUFFER_SIZE);
   spall_buffer = (SpallBuffer){

server.c

@@ -40,7 +40,7 @@ void server(void *info_raw)
 
   struct GameState gs = {0};
   size_t entities_size = (sizeof(Entity) * MAX_ENTITIES);
-  Entity *entity_data = malloc(entities_size);
+  Entity *entity_data = calloc(1, entities_size);
   initialize(&gs, entity_data, entities_size);
   gs.server_side_computing = true;
   Log("Allocated %zu bytes for entities\n", entities_size);
@@ -64,7 +64,7 @@ void server(void *info_raw)
   if (world_save_name != NULL)
   {
     size_t read_game_data_buffer_size = entities_size;
-    unsigned char *read_game_data = malloc(read_game_data_buffer_size);
+    unsigned char *read_game_data = calloc(1, read_game_data_buffer_size);
 
     FILE *file = NULL;
     fopen_s(&file, (const char *)world_save_name, "rb");
@@ -139,7 +139,7 @@ void server(void *info_raw)
   uint64_t last_sent_gamestate_time = stm_now();
   double audio_time_to_send = 0.0;
   double total_time = 0.0;
-  unsigned char *world_save_buffer = malloc(entities_size);
+  unsigned char *world_save_buffer = calloc(1, entities_size);
   PROFILE_SCOPE("Serving")
   {
     while (true)
@@ -422,8 +422,8 @@ void server(void *info_raw)
             if (this_player_entity == NULL)
               continue;
             // @Speed don't recreate the packet for every peer, gets expensive copying gamestate over and over again
-            unsigned char *bytes_buffer = malloc(sizeof *bytes_buffer * MAX_SERVER_TO_CLIENT);
-            unsigned char *compressed_buffer = malloc(sizeof *compressed_buffer * MAX_SERVER_TO_CLIENT);
+            unsigned char *bytes_buffer = calloc(1, sizeof *bytes_buffer * MAX_SERVER_TO_CLIENT);
+            unsigned char *compressed_buffer = calloc(1, sizeof *compressed_buffer * MAX_SERVER_TO_CLIENT);
 
             // mix audio to be sent
             VOIP_QUEUE_DECL(buffer_to_play, buffer_to_play_data);

types.h

@@ -8,7 +8,7 @@
 #define MAX_PLAYERS 16
 #define MAX_SUNS 8
 #define MAX_ENTITIES 1024 * 25
-#define BOX_SIZE 0.25f
+#define BOX_SIZE 0.25f // whole size, not half size
 #define MERGE_MAX_DIST (BOX_SIZE / 2.0f + 0.01f)
 
 #define MISSILE_RANGE 4.0f
@@ -58,7 +58,7 @@
 #define THRUSTER_ENERGY_USED_PER_SECOND 0.005
 #define THRUSTER_DAMAGE_PER_SEC 2.0
 
-#define LANDING_GEAR_MAX_DIST (BOX_SIZE * 0.25)
+#define LANDING_GEAR_MAX_DIST (BOX_SIZE * 0.05)
 
 #define GYROSCOPE_ENERGY_USED_PER_SECOND 0.005f
 #define GYROSCOPE_TORQUE 1.5f
@@ -250,13 +250,14 @@ typedef struct InputFrame
   bool reject_cur_squad_invite;
   EntityID invite_this_player; // null means inviting nobody! @Robust make it so just sends interact pos input, and server processes who to invite. This depends on client side prediction + proper input processing at the right tick.
 
+  bool interact_action;
   bool seat_action;
   cpVect hand_pos; // local to player transationally but not rotationally
 
   bool dobuild;
   enum BoxType build_type;
   enum CompassRotation build_rotation;
-} InputFrame;
+} InputFrame; // the length of this is assumed to be constant
 
 typedef struct PlatonicDetection
 {
@@ -378,7 +379,9 @@ typedef struct Entity
   double scanner_head_rotate;
 
   // landing gear only
-  cpConstraint *landed_constraint; // when null is landed
+  cpConstraint *landed_constraint; // when not null, landing gear landed on something. Only valid while shape_to_land_on is a valid reference
+  // to land, set this to the shape to land on. A constraint will be created if it is valid. If it's not, it will be zerod
+  EntityID shape_to_land_on; // checked for surface distance to make sure is valid
 
   PlatonicDetection detected_platonics[SCANNER_MAX_PLATONICS]; // intensity of 0.0 means undetected
 
@@ -550,6 +553,7 @@ Entity *get_entity(struct GameState *gs, EntityID id);
 Entity *new_entity(struct GameState *gs);
 EntityID get_id(struct GameState *gs, Entity *e);
 cpVect entity_pos(Entity *e);
+bool box_enterable(Entity *box);
 bool box_interactible(GameState *gs, Player *for_player, Entity *box);
 void entity_set_rotation(Entity *e, double rot);
 bool could_learn_from_scanner(Player *for_player, Entity *box);
@@ -588,6 +592,7 @@ cpVect thruster_force(Entity *box);
 void dbg_drawall();
 void dbg_line(cpVect from, cpVect to);
 void dbg_rect(cpVect center);
+typedef struct { int __do_not_reference__; } MakeUnreferencable; // used to remove variables from scope
 
 typedef struct ServerThreadInfo
 {