Weather Command

Created the base for the weather command. Currently it will give an
warning if you do not have enough parameters to fulfill the command. It
will, however, crash the server when used properly.

src/lib/plugins/weather.js

@@ -0,0 +1,29 @@
+
+module.exports.player = function(player, serv) { // Player is a type of entity (entity inject is called first) with added properties and functions
+  player.commands.add({
+    base: 'weather',
+    info: 'Sets ths weather.',
+    usage: '/weather <clear|rain|thunder> [duration]',
+    op: true,
+    parse(str) {
+      const args = str.split(' ');
+      if(args.length!=2)
+        return false;
+
+      let condition = player.selectorString(args[0]);
+      if(condition.length==0) throw new UserError("one condition");
+
+      let duration = player.selectorString(args[1]);
+      if(duration.length < 1) throw new UserError("one duration");
+
+      return {condition:condition[0],duration:duration[0]};
+    },
+    action({condition,duration}){
+      if(condition == 'rain'){
+        serv._writeAll('game_state_change',{reason:2,value:0});
+      } else if(condition == 'clear') {
+        serv._writeAll('game_state_change',{reason:1,value:0});
+      }
+    }
+  })
+};