Add an option in game config to start with Great Tree Hall bars opened

schema/randomprime.schema.json

@@ -813,6 +813,11 @@
                     "type": "boolean",
                     "default": false
                 },
+                "greatTreeHallBarsOpened": {
+                    "description": "Bars in Tallon Overworld - Great Tree Hall are pre-opened.",
+                    "type": "boolean",
+                    "default": false
+                },
                 "incineratorDroneConfig": {
                     "description": "Replace the 'random add' timer values us in the Incinerator Drone miniboss fight with constants.",
                     "type": "object",

src/patch_config.rs

@@ -1394,6 +1394,7 @@ pub struct PatchConfig {
     pub remove_mine_security_station_locks: bool,
     pub remove_hive_mecha: bool,
     pub power_bomb_arboretum_sandstone: bool,
+    pub great_tree_hall_bars_opened: bool,
     pub visible_bounding_box: bool,
     pub door_destination_scans: bool,
     pub no_hud: bool,
@@ -1554,6 +1555,7 @@ struct GameConfig {
     remove_mine_security_station_locks: Option<bool>,
     remove_hive_mecha: Option<bool>,
     power_bomb_arboretum_sandstone: Option<bool>,
+    great_tree_hall_bars_opened: Option<bool>,
 
     incinerator_drone_config: Option<IncineratorDroneConfig>,
     maze_seeds: Option<Vec<u32>>,
@@ -2644,6 +2646,10 @@ impl PatchConfigPrivate {
                 .game_config
                 .power_bomb_arboretum_sandstone
                 .unwrap_or(false),
+            great_tree_hall_bars_opened: self
+                .game_config
+                .great_tree_hall_bars_opened
+                .unwrap_or(false),
 
             incinerator_drone_config: self.game_config.incinerator_drone_config.clone(),
             maze_seeds: self.game_config.maze_seeds.clone(),

src/patches.rs

@@ -15657,6 +15657,37 @@ fn patch_arboretum_sandstone(patcher: &mut PrimePatcher<'_, '_>) {
     });
 }
 
+fn make_great_tree_hall_bars_opened(patcher: &mut PrimePatcher<'_, '_>)
+{
+    patcher.add_scly_patch(resource_info!("04_over_tree.MREA").into(), |_ps, area| {
+        let (gate_solved_layer_idx, gate_unsolved_layer_idx) = (
+            area.get_layer_id_from_name("Gate Solved"),
+            area.get_layer_id_from_name("Gate Unsolved"),
+        );
+        let flags = &mut area.layer_flags.flags;
+        *flags |= 1 << gate_solved_layer_idx; // Turn on "Gate Solved"
+        *flags &= !(1 << gate_unsolved_layer_idx); // Turn off "Gate Unsolved"
+
+        // disable scan point for closed bars
+        area.set_memory_relay_active(0x002402c8, 1);
+
+        let scly = area.mrea().scly_section_mut();
+
+        // activate solved bars
+        let obj = scly.layers
+                      .as_mut_vec()[0]
+                      .objects
+                      .iter_mut()
+                      .find(|obj| obj.instance_id & 0xffff == 0x1F6)
+                      .and_then(|obj| obj.property_data.as_platform_mut())
+                      .unwrap();
+
+        obj.active = 1;
+
+        Ok(())
+    });
+}
+
 pub fn patch_iso<T>(config: PatchConfig, mut pn: T) -> Result<(), String>
 where
     T: structs::ProgressNotifier,
@@ -17946,6 +17977,10 @@ fn build_and_run_patches<'r>(
         patch_arboretum_sandstone(&mut patcher);
     }
 
+    if config.great_tree_hall_bars_opened {
+        make_great_tree_hall_bars_opened(&mut patcher);
+    }
+
     if let Some(bomb_slot_covers) = config.hall_of_the_elders_bomb_slot_covers {
         patch_hall_of_the_elders_bomb_slot_covers(&mut patcher, bomb_slot_covers)
     }