Merge pull request #29 from CausewayDigital/master

Rewrite computing unit 1 lesson 3

computing/unit-1/lesson-3.md

@@ -1,39 +1,25 @@
-### @hideIteration false 
-### @explicitHints 1
+### @hideIteration true 
+### @explicitHints true
 
 
 # Lesson 3
 
 ## Step 1
-To program your Agent to build, select an ``||player:on chat||`` command and rename it from **run** to **build_a_bridge**. Select an ``||agent: agent place on move||`` command and drag it inside the ``||player:on chat||`` command.
-
-### ~ tutorialhint
-Don't forget to set the condition to **true**, so that the Agent will be able to build. 
-
-## Step 3
-Identify **direction** in which you would like the Agent to place blocks by selecting an ``||agent: agent place||``. 
-
-## Step 4
-Now add an ``||agent: agent move||`` command to ensure that the Agent moves in the right direction. 
+With everything you have learnt so far, can you code your agent to build a bridge across the water?   
+The gap is 3 blocks wide.   
+When done, press the **Play** button to compile the code, then go to the Minecraft world, press **T** and type **build_a_bridge**.
 
 ### ~ tutorialhint
-Make sure your Agent has **building material** in its inventory. The blocks should be in **slot 1**. 
-
-## Step 5
-When done, press the **Play** button to compile the code, then go to the Minecraft world, press **T** and type **build_a_bridge**.
+Don't forget to place **down** when placing blocks!   
+Also make sure your Agent has **building material** in its inventory. The blocks should be in **slot 1**.
 
-## Step 6 
-Now you can practice using these commands in different combinations. 
 
 ```ghost
 player.onChat("run", function () {
     player.say(":)")
     agent.teleportToPlayer()
     agent.turn(LEFT_TURN)
     agent.move(FORWARD, 1)
-    agent.destroy(FORWARD)
-    agent.collectAll()
-    agent.setAssist(PLACE_ON_MOVE, false)
     agent.place(FORWARD)
 })
 ```