tr1/objects/bear: apply AI fix in bear control

This moves the bear AI fix to the control routine to avoid the setting
having been changed before demos load, where the setting will be
disabled.

Resolves #2559.

docs/tr1/CHANGELOG.md

@@ -1,6 +1,7 @@
 ## [Unreleased](https://github.com/LostArtefacts/TRX/compare/tr1-4.8.3...develop) - ××××-××-××
 - added support for custom levels to use `disable_floor` in the gameflow, similar to TR2's Floating Islands (#2541)
 - changed the Controls screen to hide the reset and unbind texts when changing a key (#2103)
+- fixed the bear AI fix option being applied in the Vilcabamba demo (#2559, regression from 4.8)
 
 ## [4.8.3](https://github.com/LostArtefacts/TRX/compare/tr1-4.8.2...tr1-4.8.3) - 2025-02-17
 - fixed some of Lara's speech in the gym not playing in response to player action (#2514, regression from 4.8)

src/tr1/game/objects/creatures/bear.c

@@ -58,11 +58,6 @@ static void M_Setup(OBJECT *const obj)
     obj->collision_func = Creature_Collision;
     obj->shadow_size = UNIT_SHADOW / 2;
     obj->hit_points = BEAR_HITPOINTS;
-    if (g_Config.gameplay.fix_bear_ai) {
-        obj->pivot_length = 0;
-    } else {
-        obj->pivot_length = 500;
-    }
     obj->radius = BEAR_RADIUS;
     obj->smartness = BEAR_SMARTNESS;
     obj->intelligent = 1;
@@ -76,6 +71,8 @@ static void M_Setup(OBJECT *const obj)
 
 static void M_Control(const int16_t item_num)
 {
+    Object_Get(O_BEAR)->pivot_length =
+            g_Config.gameplay.fix_bear_ai ? 0 : 500;
     ITEM *const item = Item_Get(item_num);
 
     if (item->status == IS_INVISIBLE) {