# HG changeset patch
# User Steve Losh <steve@stevelosh.com>
# Date 1313349531 14400
# Node ID 1d52b74b6239cab5096bf843e510a6fc9a1dbbde
# Parent  82b346fcfbf2e392aac986dd4f844debafca796f
Add look and turn actions.

diff -r 82b346fcfbf2 -r 1d52b74b6239 docs/source/actions.rst
--- a/docs/source/actions.rst	Fri Aug 12 21:38:25 2011 -0400
+++ b/docs/source/actions.rst	Sun Aug 14 15:18:51 2011 -0400
@@ -42,6 +42,104 @@
 
 Tells the bot to jump, if possible.
 
+look-to
+-------
+
+``(clojurecraft.actions/look-to bot pitch)``
+
+Changes the position of the bot's head.  ``pitch`` can be anywhere from ``-90`` to
+``90``.
+
+* ``-90``: looking straight up.
+* ``0``: looking straight ahead.
+* ``90``: looking straight down.
+
+look-up
+-------
+
+``(clojurecraft.actions/look-up bot)``
+
+Changes the position of the bot's head to look straight up.
+
+Exactly equivalent to ``(clojurecraft.actions/look-to bot -90.0)``.
+
+look-down
+---------
+
+``(clojurecraft.actions/look-down bot)``
+
+Changes the position of the bot's head to look straight down.
+
+Exactly equivalent to ``(clojurecraft.actions/look-to bot 90.0)``.
+
+look-straight
+-------------
+
+``(clojurecraft.actions/look-straight bot)``
+
+Changes the position of the bot's head to look straight ahead.
+
+Exactly equivalent to ``(clojurecraft.actions/look-to bot 0.0)``.
+
+turn-to
+-------
+
+``(clojurecraft.actions/turn-to bot yaw)``
+
+Changes the direction the bot is looking.  ``yaw`` can be anywhere from ``0`` to
+``359``.
+
+* ``0``: looking in the -z direction.
+* ``90``: looking in the -x direction.
+* ``180``: looking in the +z direction.
+* ``270``: looking in the +x direction.
+
+A few notes:
+
+* Changing your bot's yaw by too large an increment at once seems to be handled
+  weirdly by the vanilla client.  It will turn partway toward the destination yaw,
+  pause, and then turn the rest of the way.
+* Changing the direction the bot is looking affects the *head* of your bot, not
+  necessarily the *body*.  The body will rotate as much as is necessary to prevent
+  an Exorcist-style head-spin.  I don't know of a way to force the body to face
+  a certain direction at the moment, but I'll keep looking.
+
+turn-north
+----------
+
+``(clojurecraft.actions/turn-north bot)``
+
+Changes the direction the bot is looking to north.
+
+Exactly equivalent to ``(clojurecraft.actions/turn-to bot 90.0)``.
+
+turn-south
+----------
+
+``(clojurecraft.actions/turn-south bot)``
+
+Changes the direction the bot is looking to south.
+
+Exactly equivalent to ``(clojurecraft.actions/turn-to bot 270.0)``.
+
+turn-east
+---------
+
+``(clojurecraft.actions/turn-east bot)``
+
+Changes the direction the bot is looking to east.
+
+Exactly equivalent to ``(clojurecraft.actions/turn-to bot 180.0)``.
+
+turn-west
+---------
+
+``(clojurecraft.actions/turn-west bot)``
+
+Changes the direction the bot is looking to west.
+
+Exactly equivalent to ``(clojurecraft.actions/turn-to bot 0.0)``.
+
 move
 ----
 
diff -r 82b346fcfbf2 -r 1d52b74b6239 src/clojurecraft/actions.clj
--- a/src/clojurecraft/actions.clj	Fri Aug 12 21:38:25 2011 -0400
+++ b/src/clojurecraft/actions.clj	Sun Aug 14 15:18:51 2011 -0400
@@ -27,6 +27,46 @@
   (delay
     (write-packet bot :chat {:message message})))
 
+
+(defn turn-to [bot yaw]
+  (delay
+    (let [player (:player bot)]
+      (dosync
+        (let [location (:loc @player)
+              new-location (assoc location :yaw yaw)]
+          (alter player assoc :loc new-location))))))
+
+(defn turn-north [bot]
+  (turn-to bot 90.0))
+
+(defn turn-south [bot]
+  (turn-to bot 270.0))
+
+(defn turn-east [bot]
+  (turn-to bot 180.0))
+
+(defn turn-west [bot]
+  (turn-to bot 0.0))
+
+
+(defn look-to [bot pitch]
+  (delay
+    (let [player (:player bot)]
+      (dosync
+        (let [location (:loc @player)
+              new-location (assoc location :pitch pitch)]
+          (alter player assoc :loc new-location))))))
+
+(defn look-up [bot]
+  (look-to bot -90.0))
+
+(defn look-down[bot]
+  (look-to bot 90.0))
+
+(defn look-straight [bot]
+  (look-to bot 0.0))
+
+
 (defn respawn [bot]
   (delay
     (write-packet bot :respawn {:world 0}))) ; Always respawn in the normal (non-Nether) world for now.
diff -r 82b346fcfbf2 -r 1d52b74b6239 src/clojurecraft/in.clj
--- a/src/clojurecraft/in.clj	Fri Aug 12 21:38:25 2011 -0400
+++ b/src/clojurecraft/in.clj	Sun Aug 14 15:18:51 2011 -0400
@@ -132,10 +132,11 @@
          :z (-read-int conn)))
 
 (defn- read-packet-useentity [bot conn]
-  (assoc {}
-         :user (-read-int conn)
-         :target (-read-int conn)
-         :leftclick (-read-bool conn)))
+  (let [payload (assoc {}
+                       :user (-read-int conn)
+                       :target (-read-int conn)
+                       :leftclick (-read-bool conn))]
+    payload))
 
 (defn- read-packet-updatehealth [bot conn]
   (let [payload (assoc {}