Block loader (sort and merge gadgets into different blocks) (#1517)

Original commits:

* block loader
* fix
* fix
* fix foolish bug
* add scales
* rename
* set to 600
* nitpick

Co-authored-by: AnimeGitB <AnimeGitB@bigblueball.in>

src/main/java/emu/grasscutter/game/world/SpawnDataEntry.java

@@ -1,7 +1,9 @@
 package emu.grasscutter.game.world;
 
 import java.util.List;
+import java.util.Objects;
 
+import emu.grasscutter.data.GameDepot;
 import emu.grasscutter.utils.Position;
 
 public class SpawnDataEntry {
@@ -60,11 +62,18 @@ public class SpawnDataEntry {
 		return rot;
 	}
 
+    public GridBlockId getBlockId(){
+        int scale = GridBlockId.getScale(gadgetId);
+        return new GridBlockId(group.sceneId,scale,
+            (int)(pos.getX() / GameDepot.BLOCK_SIZE[scale]),
+            (int)(pos.getZ() / GameDepot.BLOCK_SIZE[scale])
+        );
+    }
+
 	public static class SpawnGroupEntry {
 		private int sceneId;
 		private int groupId;
 		private int blockId;
-		private Position pos;
 		private List<SpawnDataEntry> spawns;
 
 		public int getSceneId() {
@@ -83,12 +92,64 @@ public class SpawnDataEntry {
 			this.blockId = blockId;
 		}
 
-		public Position getPos() {
-			return pos;
-		}
-
 		public List<SpawnDataEntry> getSpawns() {
 			return spawns;
 		}
 	}
+
+    public static class GridBlockId {
+        int sceneId;
+        int scale;
+        int x;
+        int z;
+
+        public GridBlockId(int sceneId, int scale, int x, int z) {
+            this.sceneId = sceneId;
+            this.scale = scale;
+            this.x = x;
+            this.z = z;
+        }
+
+        @Override
+        public String toString() {
+            return "SpawnDataEntryScaledPoint{" +
+                "sceneId=" + sceneId +
+                ", scale=" + scale +
+                ", x=" + x +
+                ", z=" + z +
+                '}';
+        }
+
+        @Override
+        public boolean equals(Object o) {
+            if (this == o) return true;
+            if (o == null || getClass() != o.getClass()) return false;
+            GridBlockId that = (GridBlockId) o;
+            return sceneId == that.sceneId && scale == that.scale && x == that.x && z == that.z;
+        }
+
+        @Override
+        public int hashCode() {
+            return Objects.hash(sceneId, scale, x, z);
+        }
+
+        public static GridBlockId[] getAdjacentGridBlockIds(int sceneId, Position pos){
+            GridBlockId[] results = new GridBlockId[5*5*GameDepot.BLOCK_SIZE.length];
+            int t=0;
+            for (int scale = 0; scale < GameDepot.BLOCK_SIZE.length; scale++) {
+                int x = ((int)(pos.getX()/GameDepot.BLOCK_SIZE[scale]));
+                int z = ((int)(pos.getZ()/GameDepot.BLOCK_SIZE[scale]));
+                for (int i=x-2; i<x+3; i++) {
+                    for (int j=z-2; j<z+3; j++) {
+                        results[t++] = new GridBlockId(sceneId, scale, i, j);
+                    }
+                }
+            }
+            return results;
+        }
+
+        public static int getScale(int gadgetId){
+            return 0;//you should implement here,this is index of GameDepot.BLOCK_SIZE
+        }
+    }
 }