Add hanging signs (model still missing).

chunky/src/java/se/llbit/chunky/block/HangingSign.java

@@ -0,0 +1,40 @@
+package se.llbit.chunky.block;
+
+import se.llbit.chunky.entity.Entity;
+import se.llbit.chunky.entity.HangingSignEntity;
+import se.llbit.chunky.entity.SignEntity;
+import se.llbit.chunky.renderer.scene.Scene;
+import se.llbit.math.Ray;
+import se.llbit.math.Vector3;
+import se.llbit.nbt.CompoundTag;
+
+public class HangingSign extends MinecraftBlockTranslucent {
+  private final String material;
+  private final int rotation;
+  private final boolean attached;
+
+  public HangingSign(String name, String material, int rotation, boolean attached) {
+    super(name, SignEntity.textureFromMaterial(material));
+    this.material = material;
+    this.rotation = rotation;
+    this.attached = attached;
+    invisible = true;
+    solid = false;
+    localIntersect = true;
+  }
+
+  @Override
+  public boolean intersect(Ray ray, Scene scene) {
+    return false;
+  }
+
+  @Override
+  public boolean isBlockEntity() {
+    return true;
+  }
+
+  @Override
+  public Entity toBlockEntity(Vector3 position, CompoundTag entityTag) {
+    return new HangingSignEntity(position, entityTag, rotation, attached, material);
+  }
+}

chunky/src/java/se/llbit/chunky/block/MinecraftBlockProvider.java

@@ -1012,7 +1012,9 @@ private static void addBlocks(Texture texture, String... names) {
     addBlock("cherry_planks", Texture.cherryPlanks);
     addBlock("cherry_pressure_plate", (name, tag) -> new PressurePlate(name, Texture.cherryPlanks));
     addBlock("cherry_sign", (name, tag) -> sign(tag, "cherry"));
+    addBlock("cherry_hanging_sign", (name, tag) -> hangingSign(tag, "cherry"));
     addBlock("cherry_wall_sign", (name, tag) -> wallSign(tag, "cherry"));
+    addBlock("cherry_wall_hanging_sign", (name, tag) -> hangingSign(tag, "cherry"));
     addBlock("cherry_slab", (name, tag) -> slab(tag, Texture.cherryPlanks));
     addBlock("cherry_stairs", (name, tag) -> stairs(tag, Texture.cherryPlanks));
     addBlock("cherry_trapdoor", (name, tag) -> trapdoor(tag, Texture.cherryTrapdoor));
@@ -3259,6 +3261,13 @@ private static Block sign(Tag tag, String material) {
     return new Sign(name, material, rotation);
   }
 
+  private static Block hangingSign(Tag tag, String material) {
+    String name = BlockProvider.blockName(tag);
+    int rotation = BlockProvider.stringToInt(tag.get("Properties").get("rotation"), 0);
+    boolean attached = tag.get("Properties").get("attached").stringValue("false").equals("true");
+    return new HangingSign(name, material, rotation, attached);
+  }
+
   private static Block banner(Tag tag, Texture texture, int color) {
     String name = BlockProvider.blockName(tag);
     int rotation = BlockProvider.stringToInt(tag.get("Properties").get("rotation"), 0);

chunky/src/java/se/llbit/chunky/entity/Entity.java

@@ -114,6 +114,8 @@ public static Entity fromJson(JsonObject json) {
         return DecoratedPotModel.DecoratedPotSpoutEntity.fromJson(json);
       case "calibratedSculkSensorAmethyst":
         return CalibratedSculkSensorAmethyst.fromJson(json);
+      case "hangingSign":
+        return HangingSignEntity.fromJson(json);
     }
     return null;
   }

chunky/src/java/se/llbit/chunky/entity/HangingSignEntity.java

@@ -0,0 +1,87 @@
+package se.llbit.chunky.entity;
+
+import se.llbit.chunky.resources.SignTexture;
+import se.llbit.chunky.resources.Texture;
+import se.llbit.json.JsonArray;
+import se.llbit.json.JsonObject;
+import se.llbit.json.JsonValue;
+import se.llbit.math.Vector3;
+import se.llbit.math.primitive.Primitive;
+import se.llbit.nbt.CompoundTag;
+
+import java.util.Collection;
+import java.util.LinkedHashSet;
+
+import static se.llbit.chunky.entity.SignEntity.*;
+
+public class HangingSignEntity extends Entity {
+  private final JsonArray[] frontText;
+  private final JsonArray[] backText;
+  private final int angle;
+  private final boolean attached;
+  private final SignTexture frontTexture;
+  private final SignTexture backTexture;
+  private final Texture texture;
+  private final String material;
+
+  public HangingSignEntity(Vector3 position, CompoundTag entityTag, int rotation, boolean attached, String material) {
+    this(position, getFrontTextLines(entityTag), getBackTextLines(entityTag), rotation, attached, material);
+  }
+
+  public HangingSignEntity(Vector3 position, JsonArray[] frontText, JsonArray[] backText, int rotation, boolean attached, String material) {
+    super(position);
+    Texture signTexture = SignEntity.textureFromMaterial(material);
+    this.frontText = frontText;
+    this.backText = backText;
+    this.angle = rotation;
+    this.attached = attached;
+    this.frontTexture = frontText != null ? new SignTexture(frontText, signTexture, false) : null;
+    this.backTexture = backText != null ? new SignTexture(backText, signTexture, true) : null;
+    this.texture = signTexture;
+    this.material = material;
+  }
+
+  @Override
+  public Collection<Primitive> primitives(Vector3 offset) {
+    // TODO
+    return new LinkedHashSet<>();
+  }
+
+  @Override
+  public JsonValue toJson() {
+    JsonObject json = new JsonObject();
+    json.add("kind", "hangingSign");
+    json.add("position", position.toJson());
+    if (frontText != null) {
+      json.add("text", SignEntity.textToJson(frontText));
+    }
+    if (backText != null) {
+      json.add("backText", SignEntity.textToJson(backText));
+    }
+    json.add("direction", angle);
+    json.add("attached", attached);
+    json.add("material", material);
+    return json;
+  }
+
+  /**
+   * Unmarshalls a sign entity from JSON data.
+   */
+  public static Entity fromJson(JsonObject json) {
+    Vector3 position = new Vector3();
+    position.fromJson(json.get("position").object());
+    JsonArray[] frontText = null;
+    if (json.get("text").isArray()) {
+      frontText = textFromJson(json.get("text"));
+    }
+    JsonArray[] backText = null;
+    if (json.get("backText").isArray()) {
+      backText = textFromJson(json.get("backText"));
+    }
+    int direction = json.get("direction").intValue(0);
+    boolean attached = json.get("attached").boolValue(false);
+    String material = json.get("material").stringValue("oak");
+    return new HangingSignEntity(position, frontText, backText, direction, attached, material);
+  }
+}
+