perf(entity): 优化投射物发包过多

core/src/main/java/net/momirealms/craftengine/core/entity/projectile/AbstractCustomProjectile.java

@@ -6,6 +6,7 @@ public abstract class AbstractCustomProjectile implements CustomProjectile {
     protected final ProjectileMeta meta;
     protected final Projectile projectile;
     protected final Item<?> item;
+    private int inGroundTime;
 
     protected AbstractCustomProjectile(ProjectileMeta meta, Projectile projectile, Item<?> item) {
         this.meta = meta;
@@ -27,4 +28,14 @@ public abstract class AbstractCustomProjectile implements CustomProjectile {
     public Item<?> item() {
         return item;
     }
+
+    @Override
+    public int inGroundTime() {
+        return inGroundTime;
+    }
+
+    @Override
+    public void setInGroundTime(int inGroundTime) {
+        this.inGroundTime = inGroundTime;
+    }
 }

core/src/main/java/net/momirealms/craftengine/core/entity/projectile/CustomProjectile.java

@@ -9,4 +9,8 @@ public interface CustomProjectile {
     Projectile projectile();
 
     Item<?> item();
+
+    int inGroundTime();
+
+    void setInGroundTime(int inGroundTime);
 }