From fecba91c5ed2304657c284ddd44beb28c3f31c7d Mon Sep 17 00:00:00 2001
From: MysterD <myster@d>
Date: Tue, 10 Aug 2021 18:21:10 -0700
Subject: [PATCH] Rewrite the core of network area timer (yet again)

---
 data/behavior_data.c                          |   1 +
 include/types.h                               |   1 +
 src/engine/behavior_script.c                  | 108 +++++-------------
 src/engine/behavior_script.h                  |   2 +-
 src/engine/math_util.c                        |   4 +-
 src/engine/surface_load.c                     |   5 +
 src/game/behavior_actions.h                   |   1 +
 src/game/behaviors/bomp.inc.c                 |  16 +--
 src/game/behaviors/bowser_puzzle_piece.inc.c  |   8 +-
 .../behaviors/checkerboard_platform.inc.c     |  62 +++++-----
 src/game/behaviors/ddd_pole.inc.c             |   9 +-
 src/game/behaviors/rotating_platform.inc.c    |  19 +--
 src/game/behaviors/sliding_platform.inc.c     |   8 +-
 src/game/behaviors/tower_platform.inc.c       |  15 ++-
 src/game/obj_behaviors.c                      |   2 +
 src/game/spawn_object.c                       |   7 +-
 src/pc/network/network.c                      |  40 +++++--
 17 files changed, 147 insertions(+), 161 deletions(-)

diff --git a/data/behavior_data.c b/data/behavior_data.c
index e1ad6ed93..0cb073972 100644
--- a/data/behavior_data.c
+++ b/data/behavior_data.c
@@ -832,6 +832,7 @@ const BehaviorScript bhvWfRotatingWoodenPlatform[] = {
     BEGIN(OBJ_LIST_SURFACE),
     ID(id_bhvWfRotatingWoodenPlatform),
     OR_INT(oFlags, OBJ_FLAG_UPDATE_GFX_POS_AND_ANGLE),
+    CALL_NATIVE(bhv_wf_rotating_wooden_platform_init),
     LOAD_COLLISION_DATA(wf_seg7_collision_clocklike_rotation),
     BEGIN_LOOP(),
         CALL_NATIVE(bhv_wf_rotating_wooden_platform_loop),
diff --git a/include/types.h b/include/types.h
index 92aeabf80..8281c7ae2 100644
--- a/include/types.h
+++ b/include/types.h
@@ -222,6 +222,7 @@ struct Object
     /*0x25C*/ void *respawnInfo;
     /*?????*/ u8 createdThroughNetwork;
     /*?????*/ u32 areaTimer;
+    /*?????*/ u32 areaTimerLoopLength;
     /*?????*/ u8 globalPlayerIndex;
 };
 
diff --git a/src/engine/behavior_script.c b/src/engine/behavior_script.c
index 50613400d..aa6cb80c0 100644
--- a/src/engine/behavior_script.c
+++ b/src/engine/behavior_script.c
@@ -951,6 +951,29 @@ static BhvCommandProc BehaviorCmdTable[] = {
 
 // Execute the behavior script of the current object, process the object flags, and other miscellaneous code for updating objects.
 void cur_obj_update(void) {
+    // handle network area timer
+    if (gCurrentObject->areaTimerLoopLength > 0) {
+        // make sure the area is valid
+        if (gNetworkPlayerLocal == NULL || !gNetworkPlayerLocal->currAreaSyncValid) {
+            return;
+        }
+
+        // catch up the timer in total loop increments
+        u32 difference = (gNetworkAreaTimer - gCurrentObject->areaTimer);
+        if (difference >= gCurrentObject->areaTimerLoopLength) {
+            u32 catchup = difference / gCurrentObject->areaTimerLoopLength;
+            catchup *= gCurrentObject->areaTimerLoopLength;
+            gCurrentObject->areaTimer += catchup;
+        }
+
+        // cancel object update if it's running faster than the timer
+        if (gCurrentObject->areaTimer >= gNetworkAreaTimer) {
+            return;
+        }
+    }
+
+cur_obj_update_begin:;
+
     UNUSED u32 unused;
 
     s16 objFlags = gCurrentObject->oFlags;
@@ -1051,70 +1074,13 @@ void cur_obj_update(void) {
             }
         }
     }
-}
 
-// Execute the behavior script of the current object, process the object flags, and other miscellaneous code for updating objects.
-void cur_obj_fake_update(void) {
-    UNUSED u32 unused;
-
-    s16 objFlags = gCurrentObject->oFlags;
-
-    // Increment the object's timer.
-    if (gCurrentObject->oTimer < 0x3FFFFFFF) {
-        gCurrentObject->oTimer++;
-    }
-
-    // If the object's action has changed, reset the action timer.
-    if (gCurrentObject->oAction != gCurrentObject->oPrevAction) {
-        (void) (gCurrentObject->oTimer = 0, gCurrentObject->oSubAction = 0,
-                gCurrentObject->oPrevAction = gCurrentObject->oAction);
-    }
-
-    // Execute various code based on object flags.
-    objFlags = (s16) gCurrentObject->oFlags;
-
-    if (objFlags & OBJ_FLAG_SET_FACE_ANGLE_TO_MOVE_ANGLE) {
-        obj_set_face_angle_to_move_angle(gCurrentObject);
-    }
-
-    if (objFlags & OBJ_FLAG_SET_FACE_YAW_TO_MOVE_YAW) {
-        gCurrentObject->oFaceAngleYaw = gCurrentObject->oMoveAngleYaw;
-    }
-
-    if (objFlags & OBJ_FLAG_MOVE_XZ_USING_FVEL) {
-        cur_obj_move_xz_using_fvel_and_yaw();
-    }
-
-    if (objFlags & OBJ_FLAG_MOVE_Y_WITH_TERMINAL_VEL) {
-        cur_obj_move_y_with_terminal_vel();
-    }
-
-    if (objFlags & OBJ_FLAG_TRANSFORM_RELATIVE_TO_PARENT) {
-        obj_build_transform_relative_to_parent(gCurrentObject);
-    }
-
-    if (objFlags & OBJ_FLAG_SET_THROW_MATRIX_FROM_TRANSFORM) {
-        obj_set_throw_matrix_from_transform(gCurrentObject);
-    }
-
-    if (objFlags & OBJ_FLAG_UPDATE_GFX_POS_AND_ANGLE) {
-        obj_update_gfx_pos_and_angle(gCurrentObject);
-    }
-
-    // Calculate the distance from the object to Mario.
-    if (objFlags & OBJ_FLAG_COMPUTE_DIST_TO_MARIO) {
-        gCurrentObject->oDistanceToMario = dist_between_objects(gCurrentObject, gMarioObject);
-    }
-
-    // Calculate the angle from the object to Mario.
-    if (objFlags & OBJ_FLAG_COMPUTE_ANGLE_TO_MARIO) {
-        gCurrentObject->oAngleToMario = obj_angle_to_object(gCurrentObject, gMarioObject);
-    }
-
-    // If the object's action has changed, reset the action timer.
-    if (gCurrentObject->oAction != gCurrentObject->oPrevAction) {
-        (void)(gCurrentObject->oTimer = 0, gCurrentObject->oSubAction = 0,
-            gCurrentObject->oPrevAction = gCurrentObject->oAction);
+    // update network area timer
+    if (gCurrentObject->areaTimerLoopLength > 0) {
+        gCurrentObject->areaTimer++;
+        if (gCurrentObject->areaTimer < gNetworkAreaTimer) {
+            goto cur_obj_update_begin;
+        }
     }
 }
 
@@ -1130,18 +1096,6 @@ f32 position_based_random_float_position(void) {
     return rnd / (double)0x10000;
 }
 
-void cur_obj_area_timer_loop(u32 loopLength, void (*func)(void)) {
-    if ((gNetworkAreaTimer - gCurrentObject->areaTimer) >= loopLength) {
-        u32 catchup = (gNetworkAreaTimer - gCurrentObject->areaTimer) / loopLength;
-        catchup *= loopLength;
-        gCurrentObject->areaTimer += catchup;
-    }
-
-    while (gCurrentObject->areaTimer < gNetworkAreaTimer) {
-        (*func)();
-        gCurrentObject->areaTimer++;
-        if (gCurrentObject->areaTimer < gNetworkAreaTimer) {
-            cur_obj_fake_update();
-        }
-    }
+u8 cur_obj_is_last_nat_update_per_frame(void) {
+    return (gCurrentObject->areaTimer == (gNetworkAreaTimer - 1));
 }
diff --git a/src/engine/behavior_script.h b/src/engine/behavior_script.h
index 04d928a33..e7222aa20 100644
--- a/src/engine/behavior_script.h
+++ b/src/engine/behavior_script.h
@@ -30,6 +30,6 @@ void cur_obj_fake_update(void);
 
 u16 position_based_random_u16(void);
 f32 position_based_random_float_position(void);
-void cur_obj_area_timer_loop(u32 loopLength, void (*func)(void));
+u8 cur_obj_is_last_nat_update_per_frame(void);
 
 #endif // BEHAVIOR_SCRIPT_H
diff --git a/src/engine/math_util.c b/src/engine/math_util.c
index 0ce743b67..c398243b3 100644
--- a/src/engine/math_util.c
+++ b/src/engine/math_util.c
@@ -735,7 +735,9 @@ static u16 atan2_lookup(f32 y, f32 x) {
     if (x == 0) {
         ret = gArctanTable[0];
     } else {
-        ret = gArctanTable[(s32)(y / x * 1024 + 0.5f)];
+        s32 index = (s32)(y / x * 1024 + 0.5f);
+        if (index >= 0x401) { index = 0; }
+        ret = gArctanTable[index];
     }
     return ret;
 }
diff --git a/src/engine/surface_load.c b/src/engine/surface_load.c
index e575c4188..798065124 100644
--- a/src/engine/surface_load.c
+++ b/src/engine/surface_load.c
@@ -762,6 +762,11 @@ void load_object_surfaces(s16** data, s16* vertexData) {
  * Transform an object's vertices, reload them, and render the object.
  */
 void load_object_collision_model(void) {
+    if (gCurrentObject->areaTimerLoopLength > 0) {
+        // only load collision model on last frame
+        if (!cur_obj_is_last_nat_update_per_frame()) { return; }
+    }
+
     UNUSED s32 unused;
     s16 vertexData[600];
 
diff --git a/src/game/behavior_actions.h b/src/game/behavior_actions.h
index f118d5f97..26d77ea97 100644
--- a/src/game/behavior_actions.h
+++ b/src/game/behavior_actions.h
@@ -59,6 +59,7 @@ void bhv_rotating_platform_loop(void);
 void bhv_wf_breakable_wall_loop(void);
 void bhv_kickable_board_loop(void);
 void bhv_tower_door_loop(void);
+void bhv_wf_rotating_wooden_platform_init(void);
 void bhv_wf_rotating_wooden_platform_loop(void);
 void bhv_koopa_shell_underwater_loop(void);
 void bhv_fading_warp_loop(void);
diff --git a/src/game/behaviors/bomp.inc.c b/src/game/behaviors/bomp.inc.c
index 569b71f90..33b60c63e 100644
--- a/src/game/behaviors/bomp.inc.c
+++ b/src/game/behaviors/bomp.inc.c
@@ -4,9 +4,11 @@ void bhv_small_bomp_init(void) {
     o->oFaceAngleYaw -= 0x4000;
     o->oSmallBompInitX = o->oPosX;
     o->oTimer = position_based_random_float_position() * 100.0f;
+    o->areaTimer = 0;
+    o->areaTimerLoopLength = 168;
 }
 
-static void bhv_small_bomp_loop_inner(void) {
+void bhv_small_bomp_loop(void) {
     switch (o->oAction) {
         case BOMP_ACT_WAIT:
             if (o->oTimer >= 101) {
@@ -57,16 +59,14 @@ static void bhv_small_bomp_loop_inner(void) {
     }
 }
 
-void bhv_small_bomp_loop(void) {
-    cur_obj_area_timer_loop(168, bhv_small_bomp_loop_inner);
-}
-
 void bhv_large_bomp_init(void) {
     o->oMoveAngleYaw += 0x4000;
     o->oTimer = position_based_random_float_position() * 100.0f;
+    o->areaTimer = 0;
+    o->areaTimerLoopLength = 168;
 }
 
-void bhv_large_bomp_loop_inner(void) {
+void bhv_large_bomp_loop(void) {
     switch (o->oAction) {
         case BOMP_ACT_WAIT:
             if (o->oTimer >= 101) {
@@ -116,7 +116,3 @@ void bhv_large_bomp_loop_inner(void) {
             break;
     }
 }
-
-void bhv_large_bomp_loop(void) {
-    cur_obj_area_timer_loop(168, bhv_large_bomp_loop_inner);
-}
diff --git a/src/game/behaviors/bowser_puzzle_piece.inc.c b/src/game/behaviors/bowser_puzzle_piece.inc.c
index dc800a5b5..b3e8969c5 100644
--- a/src/game/behaviors/bowser_puzzle_piece.inc.c
+++ b/src/game/behaviors/bowser_puzzle_piece.inc.c
@@ -95,6 +95,8 @@ void bhv_lll_bowser_puzzle_spawn_piece(s16 model, const BehaviorScript *behavior
     puzzlePiece->oBowserPuzzlePieceActionList = actionList;
     puzzlePiece->oBowserPuzzlePieceNextAction = actionList;
     puzzlePiece->oTimer = 0;
+    puzzlePiece->areaTimer = 0;
+    puzzlePiece->areaTimerLoopLength = 650;
 }
 
 /**
@@ -257,7 +259,7 @@ void (*sBowserPuzzlePieceActions[])(void) = {
     bhv_lll_bowser_puzzle_piece_move_down
 };
 
-void bhv_lll_bowser_puzzle_piece_loop_inner(void) {
+void bhv_lll_bowser_puzzle_piece_loop(void) {
     bhv_lll_bowser_puzzle_piece_update();
 
     cur_obj_call_action_function(sBowserPuzzlePieceActions);
@@ -266,7 +268,3 @@ void bhv_lll_bowser_puzzle_piece_loop_inner(void) {
     o->oPosY = o->oBowserPuzzlePieceOffsetY + o->oHomeY;
     o->oPosZ = o->oBowserPuzzlePieceOffsetZ + o->oHomeZ;
 }
-
-void bhv_lll_bowser_puzzle_piece_loop(void) {
-    cur_obj_area_timer_loop(650, bhv_lll_bowser_puzzle_piece_loop_inner);
-}
diff --git a/src/game/behaviors/checkerboard_platform.inc.c b/src/game/behaviors/checkerboard_platform.inc.c
index b9ae00c58..4d317f2ab 100644
--- a/src/game/behaviors/checkerboard_platform.inc.c
+++ b/src/game/behaviors/checkerboard_platform.inc.c
@@ -50,30 +50,37 @@ void checkerboard_plat_act_rotate(s32 a0, s16 a1) {
 
 void bhv_checkerboard_platform_init(void) {
     o->oCheckerBoardPlatformUnkFC = o->parentObj->oBehParams2ndByte;
+    o->areaTimer = 0;
+    o->areaTimerLoopLength = 132 + o->oCheckerBoardPlatformUnkFC * 2;
 }
 
-static void bhv_checkerboard_platform_loop_inner(void) {
+void bhv_checkerboard_platform_loop(void) {
+    bool lastNATUpdate = cur_obj_is_last_nat_update_per_frame();
+    if (o->oDistanceToMario < 1000.0f && lastNATUpdate) {
+        cur_obj_play_sound_1(SOUND_ENV_ELEVATOR4);
+    }
+
     f32 sp24 = o->oCheckerBoardPlatformUnk1AC;
     o->oCheckerBoardPlatformUnkF8 = 0;
     switch (o->oAction) {
-    case 0:
-        if (o->oBehParams2ndByte == 0)
-            o->oAction = 1;
-        else
-            o->oAction = 3;
-        break;
-    case 1:
-        checkerboard_plat_act_move_y(2, 10.0f, o->oCheckerBoardPlatformUnkFC);
-        break;
-    case 2:
-        checkerboard_plat_act_rotate(3, 512);
-        break;
-    case 3:
-        checkerboard_plat_act_move_y(4, -10.0f, o->oCheckerBoardPlatformUnkFC);
-        break;
-    case 4:
-        checkerboard_plat_act_rotate(1, -512);
-        break;
+        case 0:
+            if (o->oBehParams2ndByte == 0)
+                o->oAction = 1;
+            else
+                o->oAction = 3;
+            break;
+        case 1:
+            checkerboard_plat_act_move_y(2, 10.0f, o->oCheckerBoardPlatformUnkFC);
+            break;
+        case 2:
+            checkerboard_plat_act_rotate(3, 512);
+            break;
+        case 3:
+            checkerboard_plat_act_move_y(4, -10.0f, o->oCheckerBoardPlatformUnkFC);
+            break;
+        case 4:
+            checkerboard_plat_act_rotate(1, -512);
+            break;
     }
     o->oMoveAnglePitch += absi(o->oAngleVelPitch);
     o->oFaceAnglePitch += absi(o->oAngleVelPitch);
@@ -86,18 +93,11 @@ static void bhv_checkerboard_platform_loop_inner(void) {
         o->oAngleVelPitch = 0;
         o->oFaceAnglePitch &= ~0x7FFF;
         cur_obj_move_using_fvel_and_gravity();
-    }
-    else {
+    } else {
         cur_obj_move_using_fvel_and_gravity();
     }
-}
-
-void bhv_checkerboard_platform_loop(void) {
-    if (o->oDistanceToMario < 1000.0f)
-        cur_obj_play_sound_1(SOUND_ENV_ELEVATOR4);
-
-    u32 loopLength = 132 + o->oCheckerBoardPlatformUnkFC * 2;
-    cur_obj_area_timer_loop(loopLength, bhv_checkerboard_platform_loop_inner);
-
-    load_object_collision_model();
+
+    if (lastNATUpdate) {
+        load_object_collision_model();
+    }
 }
diff --git a/src/game/behaviors/ddd_pole.inc.c b/src/game/behaviors/ddd_pole.inc.c
index a38be033b..f6f1daab3 100644
--- a/src/game/behaviors/ddd_pole.inc.c
+++ b/src/game/behaviors/ddd_pole.inc.c
@@ -6,9 +6,11 @@ void bhv_ddd_pole_init(void) {
         o->hitboxDownOffset = 100.0f;
         o->oDDDPoleMaxOffset = 100.0f * o->oBehParams2ndByte;
     }
+    o->areaTimer = 0;
+    o->areaTimerLoopLength = (((u16)o->oDDDPoleMaxOffset / 10) + 20) * 2;
 }
 
-static void bhv_ddd_pole_update_inner(void) {
+void bhv_ddd_pole_update(void) {
     if (o->oTimer > 20) {
         o->oDDDPoleOffset += o->oDDDPoleVel;
 
@@ -20,8 +22,3 @@ static void bhv_ddd_pole_update_inner(void) {
 
     obj_set_dist_from_home(o->oDDDPoleOffset);
 }
-
-void bhv_ddd_pole_update(void) {
-    u32 loopLength = (((u16)o->oDDDPoleMaxOffset / 10) + 20) * 2;
-    cur_obj_area_timer_loop(loopLength, bhv_ddd_pole_update_inner);
-}
diff --git a/src/game/behaviors/rotating_platform.inc.c b/src/game/behaviors/rotating_platform.inc.c
index 25cc9b941..5df523455 100644
--- a/src/game/behaviors/rotating_platform.inc.c
+++ b/src/game/behaviors/rotating_platform.inc.c
@@ -8,7 +8,13 @@ struct WFRotatingPlatformData sWFRotatingPlatformData[] = {
     { 0, 150, wdw_seg7_collision_070186B4, 1000 }
 };
 
-static void bhv_wf_rotating_wooden_platform_loop_inner(void) {
+void bhv_wf_rotating_wooden_platform_init(void) {
+    o->areaTimer = 0;
+    o->areaTimerLoopLength = 380;
+}
+
+void bhv_wf_rotating_wooden_platform_loop(void) {
+    bool lastNATUpdate = cur_obj_is_last_nat_update_per_frame();
     if (o->oAction == 0) {
         o->oAngleVelYaw = 0;
         if (o->oTimer > 60) {
@@ -16,17 +22,16 @@ static void bhv_wf_rotating_wooden_platform_loop_inner(void) {
         }
     } else {
         o->oAngleVelYaw = 0x100;
-        if (o->oTimer > 126)
+        if (o->oTimer > 126) {
             o->oAction = 0;
-        cur_obj_play_sound_1(SOUND_ENV_ELEVATOR2);
+        }
+        if (lastNATUpdate) {
+            cur_obj_play_sound_1(SOUND_ENV_ELEVATOR2);
+        }
     }
     cur_obj_rotate_face_angle_using_vel();
 }
 
-void bhv_wf_rotating_wooden_platform_loop(void) {
-    cur_obj_area_timer_loop(380, bhv_wf_rotating_wooden_platform_loop_inner);
-}
-
 void bhv_rotating_platform_loop(void) {
     s8 sp1F = o->oBehParams >> 24;
     if (o->oTimer == 0) {
diff --git a/src/game/behaviors/sliding_platform.inc.c b/src/game/behaviors/sliding_platform.inc.c
index 3e2c14579..3ec8728fa 100644
--- a/src/game/behaviors/sliding_platform.inc.c
+++ b/src/game/behaviors/sliding_platform.inc.c
@@ -20,9 +20,11 @@ void bhv_wf_sliding_platform_init(void) {
     }
 
     o->oTimer = position_based_random_float_position() * 100.0f;
+    o->areaTimer = 0;
+    o->areaTimerLoopLength = 152;
 }
 
-static void bhv_wf_sliding_platform_loop_inner(void) {
+void bhv_wf_sliding_platform_loop(void) {
     switch (o->oAction) {
         case WF_SLID_BRICK_PTFM_ACT_WAIT:
             if (o->oTimer >= 101) {
@@ -58,7 +60,3 @@ static void bhv_wf_sliding_platform_loop_inner(void) {
             break;
     }
 }
-
-void bhv_wf_sliding_platform_loop(void) {
-    cur_obj_area_timer_loop(152, bhv_wf_sliding_platform_loop_inner);
-}
diff --git a/src/game/behaviors/tower_platform.inc.c b/src/game/behaviors/tower_platform.inc.c
index e872be809..7e5e1c001 100644
--- a/src/game/behaviors/tower_platform.inc.c
+++ b/src/game/behaviors/tower_platform.inc.c
@@ -54,7 +54,7 @@ void bhv_wf_elevator_tower_platform_loop(void) {
     }
 }
 
-static void bhv_wf_sliding_tower_platform_loop_inner(void) {
+void bhv_wf_sliding_tower_platform_loop(void) {
     s32 sp24 = o->oPlatformUnk110 / o->oPlatformUnk10C;
     switch (o->oAction) {
         case 0:
@@ -82,13 +82,6 @@ static void bhv_wf_sliding_tower_platform_loop_inner(void) {
     }
 }
 
-void bhv_wf_sliding_tower_platform_loop(void) {
-    u32 loopTime = 1 + (o->oPlatformUnk110 / o->oPlatformUnk10C);
-    loopTime *= 2;
-    loopTime += 1;
-    cur_obj_area_timer_loop(loopTime, bhv_wf_sliding_tower_platform_loop_inner);
-}
-
 void spawn_and_init_wf_platforms(s16 a, const BehaviorScript *bhv) {
     s16 yaw;
     struct Object *platform = spawn_object(o, a, bhv);
@@ -100,6 +93,12 @@ void spawn_and_init_wf_platforms(s16 a, const BehaviorScript *bhv) {
     platform->oPlatformUnk110 = o->oPlatformSpawnerUnk104;
     platform->oPlatformUnk10C = o->oPlatformSpawnerUnk108;
     o->oPlatformSpawnerUnkF4++;
+
+    u32 loopTime = 1 + (platform->oPlatformUnk110 / platform->oPlatformUnk10C);
+    loopTime *= 2;
+    loopTime += 1;
+    platform->areaTimer = 0;
+    platform->areaTimerLoopLength = loopTime;
 }
 
 void spawn_wf_platform_group(void) {
diff --git a/src/game/obj_behaviors.c b/src/game/obj_behaviors.c
index c6c73b8da..2b7b9600e 100644
--- a/src/game/obj_behaviors.c
+++ b/src/game/obj_behaviors.c
@@ -137,9 +137,11 @@ void turn_obj_away_from_surface(f32 velX, f32 velZ, f32 nX, UNUSED f32 nY, f32 n
                             f32 *objYawZ) {
     *objYawX = (nZ * nZ - nX * nX) * velX / (nX * nX + nZ * nZ)
                - 2 * velZ * (nX * nZ) / (nX * nX + nZ * nZ);
+    if (isnan(*objYawX)) { *objYawX = 0; }
 
     *objYawZ = (nX * nX - nZ * nZ) * velZ / (nX * nX + nZ * nZ)
                - 2 * velX * (nX * nZ) / (nX * nX + nZ * nZ);
+    if (isnan(*objYawZ)) { *objYawZ = 0; }
 }
 
 /**
diff --git a/src/game/spawn_object.c b/src/game/spawn_object.c
index 09a1094c0..11773d00e 100644
--- a/src/game/spawn_object.c
+++ b/src/game/spawn_object.c
@@ -304,6 +304,10 @@ struct Object *allocate_object(struct ObjectNode *objList) {
     obj->header.gfx.pos[2] = -10000.0f;
     obj->header.gfx.throwMatrix = NULL;
 
+    obj->createdThroughNetwork = false;
+    obj->areaTimer = 0;
+    obj->areaTimerLoopLength = 0;
+
     return obj;
 }
 
@@ -363,9 +367,6 @@ struct Object *create_object(const BehaviorScript *bhvScript) {
             break;
     }
 
-    obj->createdThroughNetwork = false;
-    obj->areaTimer = 0;
-
     return obj;
 }
 
diff --git a/src/pc/network/network.c b/src/pc/network/network.c
index 9f21c9af6..3021c681a 100644
--- a/src/pc/network/network.c
+++ b/src/pc/network/network.c
@@ -257,6 +257,38 @@ void network_receive(u8 localIndex, u8* data, u16 dataLength) {
     packet_receive(&p);
 }
 
+static void network_update_area_timer(void) {
+    bool brokenClock = false;
+#ifdef DEVELOPMENT
+    static u16 skipClockCount = 0;
+    static u16 updateClockCount = 1;
+    if (updateClockCount > 0) {
+        updateClockCount--;
+        if (updateClockCount <= 0 || updateClockCount > 120) {
+            skipClockCount = rand() % 30;
+        }
+    }
+    else {
+        skipClockCount--;
+        if (skipClockCount <= 0 || skipClockCount > 60) {
+            updateClockCount = rand() % 120;
+        }
+    }
+    //brokenClock = (skipClockCount > 0);
+#endif
+    if (!brokenClock) {
+        // update network area timer
+        u32 desiredNAT = gNetworkAreaTimer + 1;
+        gNetworkAreaTimer = (clock_elapsed_ticks() - gNetworkAreaTimerClock);
+        if (gNetworkAreaTimer < desiredNAT) {
+            gNetworkAreaTimer++;
+        }
+        else if (gNetworkAreaTimer > desiredNAT) {
+            gNetworkAreaTimer--;
+        }
+    }
+}
+
 void network_update(void) {
     // check for level loaded event
     if (networkLoadingLevel < LOADING_LEVEL_THRESHOLD) {
@@ -268,13 +300,7 @@ void network_update(void) {
     }
 
     // update network area timer
-    u32 desiredNAT = gNetworkAreaTimer + 1;
-    gNetworkAreaTimer = (clock_elapsed_ticks() - gNetworkAreaTimerClock);
-    if (gNetworkAreaTimer < desiredNAT) {
-        gNetworkAreaTimer++;
-    } else if (gNetworkAreaTimer > desiredNAT) {
-        gNetworkAreaTimer--;
-    }
+    network_update_area_timer();
 
     // send out update packets
     if (gNetworkType != NT_NONE) {