implement looking, thanks @Gjum and @mhsjlw

lib/entity.js

@@ -16,6 +16,7 @@ function Entity(id) {
   this.equipment = new Array(5);
   this.heldItem = this.equipment[0]; // shortcut to equipment[0]
   this.isValid = true;
+  this.metadata = [];
 }
 
 Entity.prototype.setEquipment = function(index, item) {

lib/playerPlugins/login.js

@@ -64,12 +64,15 @@ function inject(serv,player)
 
   function sendInitialPosition()
   {
+    player.entity.position=player.spawnPoint;
+    player.entity.yaw=0;
+    player.entity.pitch=0;
     player._client.write('position', {
-      x: player.spawnPoint.x,
-      y: player.spawnPoint.y,
-      z: player.spawnPoint.z,
-      yaw: 0,
-      pitch: 0,
+      x: player.entity.position.x,
+      y: player.entity.position.y,
+      z: player.entity.position.z,
+      yaw: player.entity.yaw,
+      pitch: player.entity.pitch,
       flags: 0x00
     });
   }
@@ -125,18 +128,16 @@ function inject(serv,player)
   function spawn()
   {
     player.getOthers().forEach(function (otherPlayer) {
-      var spawnPoint=toFixedPosition(otherPlayer.spawnPoint);
-      var pos = otherPlayer.entity.position;
       player._client.write('named_entity_spawn', {
         entityId: otherPlayer.entity.id,
         playerUUID: transformUuid(otherPlayer._client.uuid),
-        x: pos ? pos.x : spawnPoint.x,
-        y: pos ? pos.y : spawnPoint.y,
-        z: pos ? pos.z : spawnPoint.z,
-        yaw: 0,
-        pitch: 0,
+        x: otherPlayer.entity.position.x,
+        y: otherPlayer.entity.position.y,
+        z: otherPlayer.entity.position.z,
+        yaw: otherPlayer.entity.yaw,
+        pitch: otherPlayer.entity.pitch,
         currentItem: 0,
-        metadata: []
+        metadata: otherPlayer.entity.metadata
       });
     });
 
@@ -144,13 +145,13 @@ function inject(serv,player)
     player._writeOthers('named_entity_spawn',{
       entityId: player.entity.id,
       playerUUID: transformUuid(player._client.uuid),
-      x: spawnPoint.x,
-      y: spawnPoint.y,
-      z: spawnPoint.z,
-      yaw: 0,
-      pitch: 0,
+      x: player.entity.position.x,
+      y: player.entity.position.y,
+      z: player.entity.position.z,
+      yaw: player.entity.yaw,
+      pitch: player.entity.pitch,
       currentItem: 0,
-      metadata: []
+      metadata: player.entity.metadata
     });
   }
 

lib/playerPlugins/updatePositions.js

@@ -9,6 +9,37 @@ function toFixedPosition(p)
 
 function inject(serv,player)
 {
+  player._client.on('look', function(packet) {
+    sendLook(packet.yaw,packet.pitch,packet.onGround)
+  });
+
+  // float (degrees) --> byte (1/256 "degrees")
+  function conv(f){
+    var b = (f % 360) * 256 / 360;
+    if (b < -128) b += 256;
+    else if (b > 127) b -= 256;
+    return Math.floor(b);
+  }
+  function sendLook(yaw,pitch,onGround)
+  {
+    var convYaw=conv(yaw);
+    var convPitch=conv(pitch);
+    if (convYaw == player.entity.yaw && convPitch == player.entity.pitch) return;
+    player._writeOthers("entity_look", {
+      entityId: player.entity.id,
+      yaw: convYaw,
+      pitch: convPitch,
+      onGround: onGround
+    });
+    player.entity.yaw = convYaw;
+    player.entity.pitch = convPitch;
+    player.entity.onGround = onGround;
+    player._writeOthers("entity_head_rotation", {
+      entityId: player.entity.id,
+      headYaw: convYaw
+    });
+  }
+
   player._client.on('position', function (packet) {
     var position = new vec3(packet.x, packet.y, packet.z);
     var onGround = packet.onGround;
@@ -19,20 +50,21 @@ function inject(serv,player)
     var position = new vec3(packet.x, packet.y, packet.z);
     var onGround = packet.onGround;
     sendRelativePositionChange(toFixedPosition(position), onGround);
+    sendLook(packet.yaw,packet.pitch,packet.onGround);
   });
 
   function sendRelativePositionChange(newPosition, onGround) {
     if (player.entity.position.distanceTo(new vec3(0, 0, 0)) != 0) {
       var diff = newPosition.minus(player.entity.position);
-      if(diff.abs().x>256 || diff.abs().y>256 || diff.abs().z>256)
+      if(diff.abs().x>127 || diff.abs().y>127 || diff.abs().z>127)
       {
         player._writeOthers('entity_teleport', {
           entityId:player.entity.id,
           x: newPosition.x,
           y: newPosition.y,
           z: newPosition.z,
-          yaw: 0,
-          pitch: 0,
+          yaw: player.entity.yaw,
+          pitch: player.entity.pitch,
           onGround: onGround
         });
       }