Update simulator index page

Author: WillB97

simulator/index.md

@@ -8,34 +8,26 @@ title: Simulator
 
 # Simulator
 
-![]({{ site.baseurl }}/images/content/simulator/arena.png)
-
 ## Installation
 
 ### Prerequisites
 
-You need to download and install [Webots](https://cyberbotics.com/#download) (the download is around 1.5GB). This is the platform we run our simulation in. Whilst we recommend version "R2021a" of Webots, and will be running competition simulations using it, "R2020b-rev1" should still work.
+You need to download and install [Webots](https://cyberbotics.com/#download) (the download is around 400MB). This is the platform we run our simulation in. We recommend version "R2021b" of Webots.
 
 #### Python Version
 
 You will also need Python installed.
 
 | Platform | Supported Python Version |
 |----------|--------------------------|
-| Windows  | 3.7 - 3.8 (64-bit)       |
-| macOS    | 3.7 - 3.8                |
-| Linux    | 3.7 - 3.8                |
-
-In the competition, Python 3.7 will be used.
+| Windows  | 3.7+ (64-bit)            |
+| macOS    | 3.7+                     |
+| Linux    | 3.7+                     |
 
 There are a small number of [external libraries]({{ site.baseurl }}/programming/python/libraries)
 which will be available to your robot code during the competition. Note that for
 local development you will need to install these yourself.
 
-If there are other libraries you would like included, please let us know
-in [`#programming-help`][programming-help] on the [Discord][discord] and include
-a link to the package on [PyPI](https://pypi.org/).
-
 ### Installing the simulation
 
 1. [Download the simulation](https://github.com/srobo/competition-simulator/releases/download/sr2021.10/competition-simulator-sr2021.10.zip), and unzip it somewhere on your computer.
@@ -60,8 +52,8 @@ have been made with each version, please see the
 [list of releases](https://github.com/srobo/competition-simulator/releases).
 
 [discord]: {{ site.baseurl }}/team_admin/discord
-[programming-help]: https://discord.com/channels/775497131057741836/777582218662510612
-[simulator-help]: https://discord.com/channels/775497131057741836/777584209896275988
+[programming-help]: https://discord.com/channels/900501415548579842/900501416269971457
+[simulator-help]: https://discord.com/channels/900501415548579842/900501416269971458
 
 ## Overview
 
@@ -77,51 +69,6 @@ Within the Webots IDE, there are a few different panels:
 - [Camera Controls](https://www.cyberbotics.com/doc/guide/the-3d-window#navigation-in-the-scene)
 - [Graphics settings](https://www.cyberbotics.com/doc/guide/preferences#opengl) (Useful if Webots is running slowly)
 
-## Robot
-
-![]({{ site.baseurl }}/images/content/simulator/robot-side.png)
-
-This is the pre-built robot used in the simulator, with an interface [similar](./programming) to the SR API.
-
-The robot has an [array of sensors](./programming/#ruggeduino) which can be [programmed](./programming), along with a [compass]({{ site.baseurl }}/programming/sr/compass/) and a [radio system]({{ site.baseurl }}/programming/sr/radio/).
-
-### Other robots
-
-There is another robot in the arena, in its starting zone. By default, this robot will not move.
-
-To control the other robot, you will need to provide its code:
-
-Create the robot code in `zone-1/robot.py`. Your code at `robot.py` will be used for zone `0`,
-though you are encouraged to move your code to `zone-0/robot.py` when running multiple robots.
-Robots which do not have any robot code in their `zone-x` directory will not do anything.
-
-```
-.
-├── competition-simulator-<version>
-│   ├── ...
-│   └─ worlds
-│       └── Arena.wbt
-├── zone-1
-|   └─ robot.py
-└── robot.py
-```
-
-## Time
-
-In the simulated environment, time advances only at the pace that the simulator
-is run. The relation between this time and the real passage of time depends on a
-couple of factors: the speed the simulation is configured to run at and the
-ability of the computer running the simulation to process it fast enough.
-
-You can configure and observe the speed the simulator is running at from the toolbar in webots:
-
-![]({{ site.baseurl }}/images/content/simulator/speed-toolbar.png)
-
-Here the simulation has run for 13.28 seconds, but is currently paused (the
-speed multiplier shows 0.00×). You could choose to step a single time increment,
-run the simulator at real speed (▶), or run the simulator at various faster
-speeds (▶▶ and ▶▶▶).
+## Programming
 
-These differences mean that your code will need to use a different mechanism to
-find the current time or to sleep within the simulation. Find out more by
-heading over to the [programming docs on time](./programming/time).
+Once you have the simulator installed you can begin [programming your robot](./programming) in the simulator.