Sync object event gfx constants

data/maps/TrainerTower_3F/map.json

@@ -16,7 +16,7 @@
   "connections": null,
   "object_events": [
     {
-      "graphics_id": "OBJECT_EVENT_GFX_TRAINER_TOWER_DUDE",
+      "graphics_id": "OBJ_EVENT_GFX_TRAINER_TOWER_DUDE",
       "x": 9,
       "y": 7,
       "elevation": 3,
@@ -29,7 +29,7 @@
       "flag": "FLAG_TEMP_6"
     },
     {
-      "graphics_id": "OBJECT_EVENT_GFX_VAR_0",
+      "graphics_id": "OBJ_EVENT_GFX_VAR_0",
       "x": 10,
       "y": 10,
       "elevation": 3,
@@ -42,7 +42,7 @@
       "flag": "FLAG_TEMP_2"
     },
     {
-      "graphics_id": "OBJECT_EVENT_GFX_VAR_1",
+      "graphics_id": "OBJ_EVENT_GFX_VAR_1",
       "x": 15,
       "y": 13,
       "elevation": 3,
@@ -55,7 +55,7 @@
       "flag": "FLAG_TEMP_3"
     },
     {
-      "graphics_id": "OBJECT_EVENT_GFX_VAR_2",
+      "graphics_id": "OBJ_EVENT_GFX_VAR_2",
       "x": 10,
       "y": 16,
       "elevation": 3,
@@ -68,7 +68,7 @@
       "flag": "FLAG_TEMP_4"
     },
     {
-      "graphics_id": "OBJECT_EVENT_GFX_VAR_3",
+      "graphics_id": "OBJ_EVENT_GFX_VAR_3",
       "x": 11,
       "y": 10,
       "elevation": 3,