diff --git a/src/format.h b/src/format.h
index 6ea3e85..cabac10 100644
--- a/src/format.h
+++ b/src/format.h
@@ -58,7 +58,7 @@
     E( HAMMER_HANDLE         ) \
     E( HAMMER_BLOCK          ) \
     E( LIGHTNING_BALL        ) \
-    E( BARRICADE             ) \
+    E( DOOR_LATCH            ) \
     E( BLOCK_1               ) \
     E( BLOCK_2               ) \
     E( BLOCK_3               ) \
diff --git a/src/lara.h b/src/lara.h
index eed8669..560d6ed 100644
--- a/src/lara.h
+++ b/src/lara.h
@@ -462,6 +462,9 @@ struct Lara : Character {
         //reset(27, vec3(72372, 8704, 46547), PI * 0.5f);  // level 3b (spikes)
         //reset(5, vec3(73394, 3840, 60758), 0);           // level 3b (scion)
         //reset(20, vec3(57724, 6656, 61941), 90 * DEG2RAD); // level 3b (boulder)
+        //reset(18, vec3(34914, 11008, 41315), 90 * DEG2RAD); // level 4 (main hall)
+        //reset(19, vec3(33368, 19968, 45643), 270 * DEG2RAD); // level 4 (damocles)
+        //reset(24, vec3(45609, 18176, 41500), 90 * DEG2RAD); // level 4 (thor)
         //reset(99,  vec3(45562, -3328, 63366), 225 * DEG2RAD); // level 7a (flipmap)
         //reset(57,  vec3(54844, -3328, 53145), 0);        // level 8b (bridge switch)
         //reset(12,  vec3(34236, -2415, 14974), 0);        // level 8b (sphinx)
diff --git a/src/level.h b/src/level.h
index 5dcf5da..79d42dd 100644
--- a/src/level.h
+++ b/src/level.h
@@ -419,6 +419,9 @@ struct Level : IGame {
                 case TR::Entity::TRAP_SWORD         :
                     entity.controller = new TrapSword(this, i);
                     break;
+                case TR::Entity::DOOR_LATCH         :
+                    entity.controller = new DoorLatch(this, i);
+                    break;
                 case TR::Entity::SWITCH                :
                 case TR::Entity::SWITCH_WATER          :
                     entity.controller = new Switch(this, i);
diff --git a/src/trigger.h b/src/trigger.h
index 23a0f3e..4e8d1fd 100644
--- a/src/trigger.h
+++ b/src/trigger.h
@@ -710,6 +710,23 @@ struct TrapLava : Controller {
 };
 
 
+struct DoorLatch : Controller {
+    enum {
+        STATE_CLOSE,
+        STATE_OPEN,
+    };
+
+    DoorLatch(IGame *game, int entity) : Controller(game, entity) {
+        getEntity().flags.collision = true;
+    }
+
+    virtual void update() {
+        updateAnimation(true);
+        animation.setState(isActive() ? STATE_OPEN : STATE_CLOSE);
+    }
+};
+
+
 struct Cabin : Controller {
     enum {
         STATE_UP,