add enable flag and read flag to shroom book interaction

Code/Entities/ShroomBook.cs

@@ -7,11 +7,15 @@ namespace Celeste.Mod.ShroomHelper.Entities {
     public class ShroomBook : CutsceneEntity {
         private readonly Player player;
         private readonly string bookTextKey;
+        private readonly string readFlag;
+        private readonly bool readFlagInverted;
         private PoemPage poem;
 
-        public ShroomBook(Player player, string bookTextKey) {
+        public ShroomBook(Player player, string bookTextKey, string readFlag, bool readFlagInverted) {
             this.player = player;
             this.bookTextKey = bookTextKey;
+            this.readFlag = readFlag;
+            this.readFlagInverted = readFlagInverted;
         }
 
         public override void OnBegin(Level level) {
@@ -24,6 +28,9 @@ public override void OnEnd(Level level) {
             if (poem != null) {
                 poem.RemoveSelf();
             }
+            if(readFlag != "") {
+                level.Session.SetFlag(readFlag, !readFlagInverted);
+            }
         }
 
         private IEnumerator Routine() {
@@ -134,4 +141,4 @@ public IEnumerator EaseOut() {
             }
         }
     }
-}
+}

Code/Entities/ShroomBookInteraction.cs

@@ -8,13 +8,30 @@ public class ShroomBookInteraction : Entity {
         public const string FlagPrefix = "it_";
         public TalkComponent Talker;
         public string assetKey;
+        public string enableFlag;
+        public string readFlag;
+        public bool enableFlagInverted = false;
+        public bool readFlagInverted = false;
 
         public ShroomBookInteraction(EntityData data, Vector2 offset)
             : base(data.Position + offset) {
 
             Collider = new Hitbox(data.Width, data.Height);
             assetKey = data.Attr("assetKey", "shroompage");
 
+            enableFlag = data.Attr("enableFlag");
+            if(enableFlag[0] == '!') {
+                enableFlagInverted = true;
+                enableFlag = enableFlag[1..];
+            }
+
+            readFlag = data.Attr("readFlag");
+            if(readFlag[0] == '!') {
+                readFlagInverted = true;
+                readFlag = readFlag[1..];
+            }
+
+
             Vector2 drawAt = new(data.Width / 2, 0f);
             if (data.Nodes.Length != 0) {
                 drawAt = data.Nodes[0] - data.Position;
@@ -24,8 +41,18 @@ public ShroomBookInteraction(EntityData data, Vector2 offset)
             Talker.PlayerMustBeFacing = false;
         }
 
+        public override void Awake(Scene scene) {
+
+            if(enableFlag == "" || SceneAs<Level>().Session.GetFlag(enableFlag) != enableFlagInverted) {
+                base.Awake(scene);
+            }
+            else {
+                RemoveSelf();
+            }
+        }
+
         public void OnTalk(Player player) {
-            Scene.Add(new ShroomBook(player, assetKey));
+            Scene.Add(new ShroomBook(player, assetKey, readFlag, readFlagInverted));
         }
     }
 }

Loenn/entities/shroom_book_interaction.lua

@@ -9,8 +9,10 @@ shroom_book_interaction.placements = {
     data = {
         width = 8,
         height = 8,
-        assetKey = "shroompage"
+        assetKey = "shroompage",
+        enableFlag = "",
+        readFlag = ""
     }
 }
 
-return shroom_book_interaction
+return shroom_book_interaction

Loenn/lang/en_gb.lang

@@ -46,6 +46,10 @@ entities.ShroomHelper/ShroomDashSwitch.attributes.description.windPatternOnColli
 # Shroom Book Interaction
 entities.ShroomHelper/ShroomBookInteraction.placements.name.shroom_book_interaction=Shroom Book Interaction
 entities.ShroomHelper/ShroomBookInteraction.attributes.description.assetKey=The image to display relative to Graphics/Atlases/Gui (do not include .png).
+entities.ShroomHelper/ShroomBookInteraction.attributes.description.enableFlag=If specified, the entity will only load when the flag is True. Use ! prefix to invert.
+entities.ShroomHelper/ShroomBookInteraction.attributes.description.readFlag=A flag to set when the player finishes reading. Use ! prefix to clear.
+
+
 
 # Double Refill Booster
 entities.ShroomHelper/DoubleRefillBooster.placements.name.double_refill_booster=Double Refill Booster