fix /give variant

Author: pquiring

src/jfcraft/item/Item.java

@@ -68,6 +68,11 @@ public final void clear() {
   public final boolean isEmpty() {
     return id == 0;
   }
+
+  public ItemBase getItemBase() {
+    return Static.items.items[id];
+  }
+
   public final String toString() {
     return "item:" + (int)id + "," + var + "," + count + "," + dmg;
   }

src/jfcraft/server/Server.java

@@ -1178,16 +1178,27 @@ public void doCommand(Client client, String cmd) {
         cnt = JF.atoi(p[3]);
         if (cnt < 1 || cnt > 64) cnt = 1;
       }
-      int var = 0;
+      int var = -1;
       if (p.length >= 5) {
         var = JF.atoi(p[4]);
-        if (var < 0 || var > 7) var = 0;
+        if (var < 0 || var > 7) var = -1;
       }
       Item item = findItem(p[2], cnt);
       if (item == null) {
         client.serverTransport.sendMsg("Error:Item not found:" + p[2]);
       } else {
-        item.var = (byte)var;
+        if (var != -1) {
+          //validate var
+          ItemBase itembase = item.getItemBase();
+          if (itembase.isVar) {
+            if (var >= itembase.names.length) {
+              var = -1;
+            }
+            if (var != -1) {
+              item.var = (byte)var;
+            }
+          }
+        }
         Static.log("give:" + (int)item.id + ":" + cnt);
         client.addItem(item, true);
       }