Fix more possible crashes

autogen/autogen.sh

@@ -1,4 +1,4 @@
 #!/usr/bin/bash
-python3 ./autogen/convert_structs.py
-python3 ./autogen/convert_functions.py
-python3 ./autogen/convert_constants.py
+python3 ./autogen/convert_structs.py $1
+python3 ./autogen/convert_functions.py $1
+python3 ./autogen/convert_constants.py $1

autogen/convert_functions.py

@@ -614,6 +614,12 @@ def build_function(function, do_extern):
     else:
         s += 'int smlua_func_%s(lua_State* L) {\n' % function['identifier']
 
+    # make sure the bhv functions have a current object
+    fname = function['filename']
+    if fname == 'behavior_actions.h' or fname == 'obj_behaviors_2.h' or fname == 'obj_behaviors.h':
+        if 'bhv_' in fid:
+            s += '    if (!gCurrentObject) { return 0; }\n'
+
     s += """    if (L == NULL) { return 0; }\n
     int top = lua_gettop(L);
     if (top != %d) {
@@ -659,6 +665,7 @@ def build_functions(processed_files):
         s += gen_comment_header(processed_file['filename'])
 
         for function in processed_file['functions']:
+            function['filename'] = processed_file['filename']
             s += build_function(function, processed_file['extern'])
     return s
 
@@ -792,28 +799,51 @@ def process_files():
 
 ############################################################################
 
-def output_nuke_function(fname, function):
+fuzz_functions = ""
+
+def output_fuzz_function(fname, function):
     first = True
-    comment = ''
+    comment = ' -- '
     fid = function['identifier']
-    print(fid + '(', end='')
+
+    line = '    ' + fid + '('
+
     for param in function['params']:
         if first:
             first = False
         else:
-            print(', ', end='')
+            line += ', '
             comment += ', '
         pid = param['identifier']
         ptype = param['type']
         ptype, plink = translate_type_to_lua(ptype)
 
-        if ptype == '`integer`' or ptype == '`number`' or 'enum' in ptype:
-            print('0', end='')
-        else:
-            print('nil', end='')
+        if 'enum ' in ptype:
+            ptype = 'integer'
+        line += 'rnd_' + ptype.strip().replace('`', '').replace(' ', '').split('<')[-1].split('>')[0].split('(')[0] + '()'
+
+
+        #if ptype == '`integer`' or ptype == '`number`' or 'enum' in ptype:
+        #    print('0', end='')
+        #else:
+        #    print('nil', end='')
         comment += ptype
 
-    print(') -- ' + comment)
+    line += ')'
+    if len(line) >= 80:
+        line = line + '\n        ' + comment + '\n'
+    else:
+        line = line.ljust(80) + comment + '\n'
+
+    global fuzz_functions
+    fuzz_functions += line
+
+def output_fuzz_file():
+    global fuzz_functions
+    with open('./autogen/fuzz_template.lua') as f:
+        file_str = f.read()
+    with open('/home/djoslin/.local/share/sm64ex-coop/mods/test-fuzz.lua', 'w') as f:
+        f.write(file_str.replace('-- $[FUNCS]', fuzz_functions))
 
 ############################################################################
 
@@ -877,7 +907,8 @@ def doc_function(fname, function):
         return ''
 
     # debug print out lua nuke functions
-    # output_nuke_function(fname, function)
+    if len(sys.argv) >= 2 and sys.argv[1] == 'fuzz':
+        output_fuzz_function(fname, function)
 
     if not doc_should_document(fname, function['identifier']):
         return ''
@@ -1073,5 +1104,8 @@ def main():
     global total_functions
     print('Total functions: ' + str(total_functions))
 
+    if len(sys.argv) >= 2 and sys.argv[1] == 'fuzz':
+        output_fuzz_file()
+
 if __name__ == '__main__':
    main()

autogen/convert_structs.py

@@ -242,6 +242,27 @@ def parse_structs(extracted):
 
 ############################################################################
 
+def output_fuzz_struct(struct):
+    sid = struct['identifier']
+    print('function Nuke' + sid + "(struct)")
+    for field in struct['fields']:
+        fid, ftype, fimmutable, lvt, lot = get_struct_field_info(struct, field)
+        if fimmutable == 'true':
+            continue
+        if sid in override_field_invisible:
+            if fid in override_field_invisible[sid]:
+                continue
+        if lvt == 'LVT_COBJECT':
+            print('    Fuzz' + ftype.replace('struct ', '') + '(struct.' + fid + ')')
+        elif lvt == 'LVT_COBJECT_P':
+            print('    struct.' + fid + ' = nil')
+        else:
+            print('    struct.' + fid + ' = 0')
+    print('end')
+    print('')
+
+############################################################################
+
 sLuaObjectTable = []
 sLotAutoGenList = []
 
@@ -272,28 +293,10 @@ def get_struct_field_info(struct, field):
 
     return fid, ftype, fimmutable, lvt, lot
 
-def output_nuke_struct(struct):
-    sid = struct['identifier']
-    print('function Nuke' + sid + "(struct)")
-    for field in struct['fields']:
-        fid, ftype, fimmutable, lvt, lot = get_struct_field_info(struct, field)
-        if fimmutable == 'true':
-            continue
-        if sid in override_field_invisible:
-            if fid in override_field_invisible[sid]:
-                continue
-        if lvt == 'LVT_COBJECT':
-            print('    Nuke' + ftype.replace('struct ', '') + '(struct.' + fid + ')')
-        elif lvt == 'LVT_COBJECT_P':
-            print('    struct.' + fid + ' = nil')
-        else:
-            print('    struct.' + fid + ' = 0')
-    print('end')
-    print('')
-
 def build_struct(struct):
-    # debug print out lua nuke functions
-    # output_nuke_struct(struct)
+    # debug print out lua fuzz functions
+    if len(sys.argv) >= 2 and sys.argv[1] == 'fuzz':
+        output_fuzz_struct(struct)
 
     sid = struct['identifier']
 

autogen/fuzz_template.lua

@@ -0,0 +1,141 @@
+-- $[STRUCTS]
+
+--------
+
+function FuzzVec3s(struct)
+    struct.x = 0
+    struct.y = 0
+    struct.z = 0
+end
+
+function FuzzVec3f(struct)
+    struct.x = 0
+    struct.y = 0
+    struct.z = 0
+end
+
+function FuzzVec4s(struct)
+    struct.x = 0
+    struct.y = 0
+    struct.z = 0
+    struct.w = 0
+end
+
+function FuzzVec4f(struct)
+    struct.x = 0
+    struct.y = 0
+    struct.z = 0
+    struct.w = 0
+end
+
+function FuzzMat4(struct)
+    struct.a = 0
+    struct.b = 0
+    struct.c = 0
+    struct.d = 0
+    struct.e = 0
+    struct.f = 0
+    struct.g = 0
+    struct.h = 0
+    struct.i = 0
+    struct.j = 0
+    struct.k = 0
+    struct.l = 0
+    struct.m = 0
+    struct.n = 0
+    struct.o = 0
+    struct.p = 0
+end
+
+--------
+
+function rnd_string()
+    t = { 0, "test", "this is a very long string this is a very long string this is a very long string this is a very long string this is a very long string this is a very long string this is a very long string this is a very long string this is a very long string this is a very long string this is a very long string this is a very long string this is a very long string" }
+    return t[math.random(#t)]
+end
+
+function rnd_integer()
+    t = { 0, math.random(1, 10), math.random(-2147483648, 2147483647) }
+    return t[math.random(#t)]
+end
+
+function rnd_number()
+    t = { 0, math.random(), (math.random() - 0.5) * 2 * 4294967296 }
+    return t[math.random(#t)]
+end
+
+function rnd_Vec3s()
+    t = { nil, { x = rnd_integer(), y = rnd_integer(), z = rnd_integer() } }
+    return t[math.random(#t)]
+end
+
+function rnd_Vec3f()
+    t = { nil, { x = rnd_number(), y = rnd_number(), z = rnd_number() } }
+    return t[math.random(#t)]
+end
+
+function rnd_Vec4s()
+    t = { nil, { x = rnd_integer(), y = rnd_integer(), z = rnd_integer(), w = rnd_integer() } }
+    return t[math.random(#t)]
+end
+
+function rnd_Vec4f()
+    t = { nil, { x = rnd_number(), y = rnd_number(), z = rnd_number(), w = rnd_number() } }
+    return t[math.random(#t)]
+end
+
+function rnd_Mat4()
+    t = { nil, { a = rnd_integer(), b = rnd_integer(), c = rnd_integer(), d = rnd_integer(), e = rnd_integer(), f = rnd_integer(), g = rnd_integer(), h = rnd_integer(), i = rnd_integer(), j = rnd_integer(), k = rnd_integer(), l = rnd_integer(), m = rnd_integer(), n = rnd_integer(), o = rnd_integer(), p = rnd_integer() } }
+    return t[math.random(#t)]
+end
+
+function rnd_Object()
+    t = { nil, gMarioStates[0].marioObj, gMarioStates[1].marioObj }
+    return t[math.random(#t)]
+end
+
+function rnd_MarioState()
+    t = { nil, gMarioStates[math.random(0, MAX_PLAYERS)] }
+    return t[math.random(#t)]
+end
+
+function rnd_NetworkPlayer()
+    t = { nil, gNetworkPlayers[math.random(0, MAX_PLAYERS)] }
+    return t[math.random(#t)]
+end
+
+function rnd_SpawnParticlesInfo()
+    t = { nil, obj_get_temp_spawn_particles_info(math.random(0, E_MODEL_MAX)) }
+    return t[math.random(#t)]
+end
+
+function rnd_BehaviorScript()
+    t = { nil, get_behavior_from_id(math.random(0, id_bhv_max_count)) }
+    return t[math.random(#t)]
+end
+
+function rnd_Camera()
+    t = { nil, gMarioStates[0].area.camera }
+    return t[math.random(#t)]
+end
+
+function rnd_PlayerGeometry()
+    t = { nil, {} }
+    return t[math.random(#t)]
+end
+
+--------
+
+function fuzz_functions()
+-- $[FUNCS]
+end
+
+--------
+
+function fuzz_structs()
+end
+
+hook_chat_command('fuzz-funcs', 'funcs', fuzz_functions)
+hook_chat_command('fuzz-structs', 'structs', fuzz_structs)
+fuzz_functions()
+print('!')

src/engine/behavior_script.c

@@ -52,7 +52,7 @@ u16 random_u16(void) {
     if (gOverrideRngPosition != NULL) {
         // override this function for rng positions
         gRandomSeed16 = gOverrideRngPosition->seed;
-    } else if (gCurrentObject->oSyncID != 0) {
+    } else if (gCurrentObject && gCurrentObject->oSyncID != 0) {
         // override this function for synchronized entities
         so = sync_object_get(gCurrentObject->oSyncID);
         if (so != NULL && so->o == gCurrentObject) {

src/game/behaviors/chuckya.inc.c

@@ -1,6 +1,7 @@
 // chuckya.c.inc
 
 void common_anchor_mario_behavior(f32 sp28, f32 sp2C, s32 sp30) {
+    if (!o) { return; }
     for (s32 i = 0; i < MAX_PLAYERS; i++) {
         if (!is_player_active(&gMarioStates[i])) { continue; }
         struct MarioState* marioState = &gMarioStates[i];
@@ -38,6 +39,7 @@ void bhv_chuckya_anchor_mario_loop(void) {
 }
 
 s32 unknown_chuckya_function(s32 sp20, f32 sp24, f32 sp28, s32 sp2C) {
+    if (!o) { return 0; }
     struct Object* player = nearest_player_to_object(o);
     s32 distanceToPlayer = player ? dist_between_objects(o, player) : 10000;
     s32 angleToPlayer = player ? obj_angle_to_object(o, player) : 0;
@@ -82,6 +84,7 @@ s32 approach_forward_vel(f32 *arr, f32 spC, f32 sp10) {
 }
 
 void chuckya_act_0(void) {
+    if (!o) { return; }
     struct Object* player = nearest_player_to_object(o);
     s32 angleToPlayer = player ? obj_angle_to_object(o, player) : 0;
     s32 sp3C = 0;
@@ -137,6 +140,7 @@ void chuckya_act_0(void) {
 }
 
 void chuckya_act_1(void) {
+    if (!o) { return; }
     if (o->oSubAction == 0) {
         if (cur_obj_init_animation_and_check_if_near_end(0))
             o->oSubAction++;
@@ -174,6 +178,7 @@ void chuckya_act_1(void) {
 }
 
 void chuckya_act_3(void) {
+    if (!o) { return; }
     o->oForwardVel = 0;
     o->oVelY = 0;
     cur_obj_init_animation_with_sound(4);
@@ -182,6 +187,7 @@ void chuckya_act_3(void) {
 }
 
 void chuckya_act_2(void) {
+    if (!o) { return; }
     if (o->oMoveFlags & (OBJ_MOVE_HIT_WALL | OBJ_MOVE_MASK_IN_WATER | OBJ_MOVE_LANDED)) {
         obj_mark_for_deletion(o);
         obj_spawn_loot_yellow_coins(o, 5, 20.0f);
@@ -192,6 +198,7 @@ void chuckya_act_2(void) {
 void (*sChuckyaActions[])(void) = { chuckya_act_0, chuckya_act_1, chuckya_act_2, chuckya_act_3 };
 
 void chuckya_move(void) {
+    if (!o) { return; }
     cur_obj_update_floor_and_walls();
     CUR_OBJ_CALL_ACTION_FUNCTION(sChuckyaActions);
     cur_obj_move_standard(-30);

src/game/behaviors/grand_star.inc.c

@@ -1,6 +1,7 @@
 // grand_star.c.inc
 
 s32 arc_to_goal_pos(Vec3f empty, Vec3f pos, f32 yVel, f32 gravity) {
+    if (!o) { return 0; }
     f32 dx = empty[0] - pos[0];
     f32 dz = empty[2] - pos[2];
     f32 planarDist = sqrtf(dx * dx + dz * dz);
@@ -13,6 +14,7 @@ s32 arc_to_goal_pos(Vec3f empty, Vec3f pos, f32 yVel, f32 gravity) {
 }
 
 void grand_star_zero_velocity(void) {
+    if (!o) { return; }
     o->oGravity = 0.0f;
     o->oVelY = 0.0f;
     o->oForwardVel = 0.0f;

src/game/behaviors/ground_particles.inc.c

@@ -25,7 +25,7 @@ void spawn_smoke_with_velocity(void) {
 
 // TODO Fix name
 void clear_particle_flags(u32 flags) {
-    if (o->parentObj) {
+    if (o && o->parentObj) {
         o->parentObj->oActiveParticleFlags &= flags ^ -1; // Clear the flags given (could just be ~flags)
     }
 }

src/game/behaviors/intro_scene.inc.c

@@ -4,6 +4,7 @@ void spawn_child_obj_relative(struct Object *parent, s16 xOffset, s16 yOffset, s
                    s16 yawOffset, s16 rollOffset, s16 forwardVel,
                    s32 model, const BehaviorScript *behavior) {
     struct Object *sp1C = spawn_object(parent, model, behavior);
+    if (!sp1C) { return; }
 
     sp1C->header.gfx.animInfo.animFrame = random_float() * 6.f;
     sp1C->oEndBirdUnk104 = sCutsceneVars[9].point[0];

src/game/behaviors/metal_box.inc.c

@@ -13,6 +13,7 @@ struct ObjectHitbox sMetalBoxHitbox = {
 };
 
 s32 check_if_moving_over_floor(f32 a0, f32 a1) {
+    if (!o) { return 0; }
     struct Surface *sp24;
     f32 sp20 = o->oPosX + sins(o->oMoveAngleYaw) * a1;
     f32 floorHeight;

src/game/behaviors/spawn_star.inc.c

@@ -27,17 +27,19 @@ void spawn_star_number(void) {
 
     // Check if the star already has a number
     struct Object *starNumber = obj_get_first_with_behavior_id(id_bhvStarNumber);
+    u32 sanityDepth = 0;
     for (; starNumber; starNumber = obj_get_next_with_same_behavior_id(starNumber)) {
+        if (++sanityDepth >= 10000) { break; }
         if (!starNumber || starNumber->parentObj == o) {
             break;
         }
     }
 
     // If not, spawn a number
-    if (!starNumber) {
+    if (!starNumber && o) {
         starNumber = spawn_object(o, MODEL_NUMBER, bhvStarNumber);
     }
-    if (starNumber) {
+    if (starNumber && o) {
         starNumber->parentObj = o;
         starNumber->activeFlags |= ACTIVE_FLAG_INITIATED_TIME_STOP; // to make sure it's updated even during time stop
         starNumber->oStarBehavior = (const void *) smlua_override_behavior(o->behavior);
@@ -208,6 +210,7 @@ struct Object *spawn_default_star(f32 x, f32 y, f32 z) {
 }
 
 struct Object *spawn_red_coin_cutscene_star(f32 x, f32 y, f32 z) {
+    if (!o) { return NULL; }
     u32 behParams = o->oBehParams;
 
     // de-duplication checking
@@ -225,6 +228,7 @@ struct Object *spawn_red_coin_cutscene_star(f32 x, f32 y, f32 z) {
 }
 
 struct Object *spawn_no_exit_star(f32 x, f32 y, f32 z) {
+    if (!o) { return NULL; }
     u32 behParams = o->oBehParams;
 
     // de-duplication checking

src/game/behaviors/tox_box.inc.c

@@ -9,12 +9,13 @@ s8 D_8032F948[] = { 4, 1, 4, 1, 4, 1, 4, 1, 4, 1, 2, 5, 1, 5, 1, 5, 1, 5,
 s8 *D_8032F96C[] = { D_8032F8F0, D_8032F924, D_8032F948 };
 
 void tox_box_shake_screen(void) {
-    if (o->oDistanceToMario < 3000.0f)
+    if (o && o->oDistanceToMario < 3000.0f)
         cur_obj_shake_screen(SHAKE_POS_SMALL);
 }
 
 void tox_box_move(f32 forwardVel, f32 a1, s16 deltaPitch, s16 deltaRoll)
 {
+    if (!o) { return; }
     o->oPosY = 99.41124 * sins((f32)(o->oTimer + 1) / 8 * 0x8000) + o->oHomeY + 3.0f;
     o->oForwardVel = forwardVel;
     o->oUnkC0 = a1;
@@ -47,6 +48,7 @@ void tox_box_act_7(void) {
 }
 
 void tox_box_act_1(void) {
+    if (!o) { return; }
     o->oForwardVel = 0.0f;
     if (o->oTimer == 0)
         tox_box_shake_screen();
@@ -56,16 +58,19 @@ void tox_box_act_1(void) {
 }
 
 void tox_box_act_2(void) {
+    if (!o) { return; }
     if (o->oTimer == 20)
         o->oAction = cur_obj_progress_direction_table();
 }
 
 void tox_box_act_3(void) {
+    if (!o) { return; }
     if (o->oTimer == 20)
         o->oAction = cur_obj_progress_direction_table();
 }
 
 void tox_box_act_0(void) {
+    if (!o) { return; }
     if (!BHV_ARR_CHECK(D_8032F96C, o->oBehParams2ndByte, s8*)) { return; }
     s8 *sp1C = D_8032F96C[o->oBehParams2ndByte];
     o->oAction = cur_obj_set_direction_table(sp1C);

src/game/behaviors/tuxie.inc.c

@@ -2,7 +2,7 @@
 
 void play_penguin_walking_sound(s32 walk) {
     s32 sound;
-    if (o->oSoundStateID == 0) {
+    if (o && o->oSoundStateID == 0) {
         if (walk == PENGUIN_WALK_BABY)
             sound = SOUND_OBJ_BABY_PENGUIN_WALK;
         else // PENGUIN_WALK_BIG

src/game/camera.c

@@ -5410,6 +5410,7 @@ void warp_camera(f32 displacementX, f32 displacementY, f32 displacementZ) {
  * unless smooth movement is off, in which case the y coordinate is simply set to `goal`
  */
 void approach_camera_height(struct Camera *c, f32 goal, f32 inc) {
+    if (!c) { return; }
     if (sStatusFlags & CAM_FLAG_SMOOTH_MOVEMENT) {
         if (c->pos[1] < goal) {
             if ((c->pos[1] += inc) > goal) {

src/game/object_list_processor.c

@@ -106,7 +106,7 @@ struct Object *gMarioObjects[MAX_PLAYERS];
  * This object is used frequently in object behavior code, and so is often
  * aliased as "o".
  */
-struct Object *gCurrentObject;
+struct Object *gCurrentObject = NULL;
 
 /**
  * The next object behavior command to be executed.
@@ -350,6 +350,7 @@ s32 update_objects_starting_at(struct ObjectNode *objList, struct ObjectNode *fi
     if (!firstObj) { return 0; }
 
     s32 count = 0;
+    struct Object* prevObject = gCurrentObject;
 
     while (objList != firstObj) {
         gCurrentObject = (struct Object *) firstObj;
@@ -362,6 +363,8 @@ s32 update_objects_starting_at(struct ObjectNode *objList, struct ObjectNode *fi
         count += 1;
     }
 
+    gCurrentObject = prevObject;
+
     return count;
 }
 
@@ -378,6 +381,7 @@ s32 update_objects_during_time_stop(struct ObjectNode *objList, struct ObjectNod
     if (!firstObj) { return 0; }
     s32 count = 0;
     s32 unfrozen;
+    struct Object* prevObject = gCurrentObject;
 
     while (objList != firstObj) {
         gCurrentObject = (struct Object *) firstObj;
@@ -414,6 +418,8 @@ s32 update_objects_during_time_stop(struct ObjectNode *objList, struct ObjectNod
         count++;
     }
 
+    gCurrentObject = prevObject;
+
     return count;
 }
 
@@ -440,6 +446,7 @@ s32 update_objects_in_list(struct ObjectNode *objList) {
 s32 unload_deactivated_objects_in_list(struct ObjectNode *objList) {
     if (!objList) { return 0; }
     struct ObjectNode *obj = objList->next;
+    struct Object* prevObject = gCurrentObject;
 
     while (objList != obj) {
         gCurrentObject = (struct Object *) obj;
@@ -458,6 +465,8 @@ s32 unload_deactivated_objects_in_list(struct ObjectNode *objList) {
         }
     }
 
+    gCurrentObject = prevObject;
+
     return 0;
 }
 

src/pc/lua/utils/smlua_obj_utils.c

@@ -123,10 +123,12 @@ struct Object *obj_get_first(enum ObjectList objList) {
 
 struct Object *obj_get_first_with_behavior_id(enum BehaviorId behaviorId) {
     const BehaviorScript* behavior = get_behavior_from_id(behaviorId);
+    u32 sanityDepth = 0;
     behavior = smlua_override_behavior(behavior);
     if (behavior) {
         enum ObjectList objList = get_object_list_from_behavior(behavior);
         for (struct Object *obj = obj_get_first(objList); obj != NULL; obj = obj_get_next(obj)) {
+            if (++sanityDepth > 10000) { break; }
             if (obj->behavior == behavior && obj->activeFlags != ACTIVE_FLAG_DEACTIVATED) {
                 return obj;
             }
@@ -137,10 +139,12 @@ struct Object *obj_get_first_with_behavior_id(enum BehaviorId behaviorId) {
 
 struct Object *obj_get_first_with_behavior_id_and_field_s32(enum BehaviorId behaviorId, s32 fieldIndex, s32 value) {
     const BehaviorScript* behavior = get_behavior_from_id(behaviorId);
+    u32 sanityDepth = 0;
     behavior = smlua_override_behavior(behavior);
     if (behavior) {
         enum ObjectList objList = get_object_list_from_behavior(behavior);
         for (struct Object *obj = obj_get_first(objList); obj != NULL; obj = obj_get_next(obj)) {
+            if (++sanityDepth > 10000) { break; }
             if (obj->behavior == behavior && obj->activeFlags != ACTIVE_FLAG_DEACTIVATED && obj->OBJECT_FIELD_S32(fieldIndex) == value) {
                 return obj;
             }

src/pc/network/packets/packet_level_macro.c

@@ -216,9 +216,11 @@ void network_receive_level_macro(struct Packet* p) {
                     u8 mask = ((o2->oBehParams2ndByte & GOOMBA_BP_TRIPLET_FLAG_MASK) >> 2);
                     if (info & mask) {
                         extern void mark_goomba_as_dead(void);
+                        struct Object* prevObject = gCurrentObject;
                         gCurrentObject = o2;
                         mark_goomba_as_dead();
                         obj_mark_for_deletion(o2);
+                        gCurrentObject = prevObject;
                     }
                 }
                 LOG_INFO("rx macro special: goomba triplet");

src/pc/network/packets/packet_spawn_star.c

@@ -68,6 +68,7 @@ void network_receive_spawn_star(struct Packet* p) {
 }
 
 void network_send_spawn_star_nle(struct Object* o, u32 params) {
+    if (!o) { return; }
     u8 globalIndex = UNKNOWN_GLOBAL_INDEX;
     if (o->behavior == smlua_override_behavior(bhvMario)) {
         u8 localIndex = o->oBehParams - 1;