Add ~ tp /tp, small fixes

src/lib/plugins/tp.js

@@ -1,13 +1,19 @@
 var Vec3 = require("vec3").Vec3;
 
 module.exports.player = (player, serv) => {
+
+  var getPos = (num, dir='x', p=player) => {
+    if (num[0] == '~') return p.position[dir] + parseInt(num.slice(1, num.length) || 0)*32;
+    else return parseInt(num);
+  }
+
   player.commands.add({
     base: 'teleport',
     aliases: ['tp'],
     info: 'to teleport a player',
-    usage: '/teleport [target player] <destination player or x> [x] [y]',
+    usage: '/teleport [target player] <destination player or x> [y] [z]',
     parse(str) {
-      return str.match(/^(((\w* )?\d* \d* \d*)|(\w* \w*))$/) ? str.split(' ') : false;
+      return str.match(/^(((\w* )?~?-?\d* ~?-?\d* ~?-?\d*)|(\w* \w*))$/) ? str.split(' ') : false;
     },
     action(args) {
       if(args.length === 2 && args[0] !== args[1]) {
@@ -19,14 +25,22 @@ module.exports.player = (player, serv) => {
 
         player_from.teleport(player_to.position.clone());
       } else if(args.length === 3) {
-        player.teleport(new Vec3(args[0]*32, args[1]*32, args[2]*32));
+        let x = getPos(args[0], 'x');
+        let y = getPos(args[1], 'y');
+        let z = getPos(args[2], 'z');
+        
+        player.teleport(new Vec3(x, y, z));
       } else if(args.length === 4) {
         let player_from;
 
         if(!(player_from = serv.getPlayer(args[0])))
           return false;
 
-        player_from.teleport(new Vec3(args[1]*32, args[2]*32, args[3]*32));
+        let x = getPos(args[0], 'x', player_from);
+        let y = getPos(args[1], 'y', player_from);
+        let z = getPos(args[2], 'z', player_from);
+
+        player_from.teleport(new Vec3(x, y, z));
       }
     }
   });

src/lib/plugins/updatePositions.js

@@ -55,16 +55,16 @@ module.exports.player=function(player)
     return player.behavior('move', {
       onGround: onGround,
       position: newPosition
-    }, async () => {
+    }, async ({onGround, position}) => {
       if (player.position.distanceTo(new Vec3(0, 0, 0)) != 0) {
-        var diff = newPosition.minus(player.position);
+        var diff = position.minus(player.position);
         if(diff.abs().x>127 || diff.abs().y>127 || diff.abs().z>127)
         {
           player._writeOthersNearby('entity_teleport', {
             entityId:player.id,
-            x: newPosition.x,
+            x: position.x,
-            y: newPosition.y,
+            y: position.y,
-            z: newPosition.z,
+            z: position.z,
             yaw: player.yaw,
             pitch: player.pitch,
             onGround: onGround
@@ -80,7 +80,7 @@ module.exports.player=function(player)
           });
         }
       }
-      player.position = newPosition;
+      player.position = position;
       player.onGround = onGround;
     }, () => {
       player.sendPosition();