+ StarController.cs - OnTriggerEnter(Collider other)
+
+
+ void OnTriggerEnter(Collider other)
+ {
+ // Check the tag of the colliding object
+ if (other.CompareTag("Player"))
+ {
+ StarPlayer player = other.gameObject.GetComponent<StarPlayer>();
+ player.stars += 1; // Increase by 1
+ AudioSource.PlayClipAtPoint(collectSound, transform.position);
+ gameObject.SetActive(false);
+ }
+ }
+
+
+```
+
+### With code block in body
+
+```example
+--- collapse ---
+---
+title: Child project
+---
+How to do something
+
+
+Here is some useful information.
+
+ main.py
+
+
+vowels = 'AEIOU' # The variable holds a string of vowels
+vowel_list = list(vowels) # Create a list that holds each vowel as a separate item
+print(vowel_list) # Display the list of vowels
+The output of this code would be:
+ +['A', 'E', 'I', 'O', 'U']
+
+
+Child project
+
+
+
+
+ main.py
+
+vowels = 'AEIOU' # The variable holds a string of vowels
+vowel_list = list(vowels) # Create a list that holds each vowel as a separate item
+print(vowel_list) # Display the list of vowels
+The output of this code would be:
+['A', 'E', 'I', 'O', 'U']
+-
+
- Now that you know how to get Steve’s position, you can begin your program by storing his poition as three variables. You can use
px,py, andpz
+
px, py, pz = mc.player.getPos()
+Step 2 - Test the PIR motion sensor
+We’re going to write some code to print out Motion detected! when the PIR sensor detects movement.
-
+
-
+
Open IDLE, create a new file and save it as parent-detector.py
+++Opening IDLE
+++[[[idle-opening]]]
+
+ - Blab la
+
+from gpiozero import MotionSensor + + pir = MotionSensor(4) +
+ -
+
Bla bla
+
+while True: + if pir.motion_detected: + print("Motion detected!") +
+
Creating Directories on a Raspberry Pi
+ +There are two ways to create directories on the Raspberry Pi. The first uses the GUI, and the second uses the Terminal.
+ +Method 1 - Using the GUI
+ +
-
+
-
+
Open a File Manager window by clicking on the icon in the top left corner of the screen
+ +
+
+ - In the window, right-click and select Create New… and then Folder from the context menu +
- In the dialogue box, type the name of your new directory and then click OK +
Method 2 - Using the Terminal
+ +
-
+
-
+
Open a new Terminal window by clicking on the icon in the top left corner of the screen.
+ +
+
+ -
+
You can create a new directory using the
+ +mkdircommand++++mkdir my-new-directory +
+ - You can list the contents of the current directory using
ls
+ -
+
To enter your new directory use the
+ +cdcommand++++cd my-new-directory +
+
+
+```
+
+### Inside a challenge
+
+````example
+## Step 5 - Record video to a file
+
+Seeing the intruder on the screen in a camera preview isn't much help to you with detecting intruders into your room. Instead, let's record a video of the intruder for you to view later on when you get home.
+
+1. Create a variable called `filename` inside your infinite loop to store the video file name
+
+ ```python
+ filename = "intruder.h264"
+ ```
+
+ In case you are wondering, `.h264` is the video format
+
+1. Find the line of code where you begin the camera preview and replace it with a line of code to start recording a video
+
+ ```python
+ camera.start_recording(filename)
+ ```
+
+1. Find the line of code where you stop the camera preview and replace it with a line of code to stop recording.
+
+--- hints ---
+
+--- hint ---
+Look at the line of code you used to start recording and see if you can work out the code to stop recording
+--- /hint ---
+
+--- hint ---
+Here is the finished code
+```python
+while True:
+ filename = "intruder.h264"
+ pir.wait_for_motion()
+ camera.start_recording(filename)
+ pir.wait_for_no_motion()
+ camera.stop_recording()
+```
+--- /hint ---
+
+--- /hints ---
+
+1. Save and run your program by pressing **F5**. Check that a file called `intruder.h264` appears in the same folder as your `parent-detector.py` file.
+
+--- challenge ---
+Every time a new intruder triggers the motion sensor the video will be overwritten. If you have lots of pesky parents or brothers and sisters intruding into your room, you want to keep videos of all of them. Can you write some code to automatically find out the current date and time and add it to the video filename so that each video we take will have a different filename?
+
+--- collapse ---
+---
+title: Getting the date and time in Python
+image:
+---
+
+[[[generic-python-timestamps]]]
+
+--- /collapse ---
+
+--- /challenge ---
+·
+Creating Directories on a Raspberry Pi
+
+
+Creating Directories on a Raspberry Pi
+There are two ways to create directories on the Raspberry Pi. The first uses the GUI, and the second uses the Terminal.
+Method 1 - Using the GUI
+
-
+
-
+
Open a File Manager window by clicking on the icon in the top left corner of the screen
+
+
+ - In the window, right-click and select Create New… and then Folder from the context menu +
- In the dialogue box, type the name of your new directory and then click OK +
Method 2 - Using the Terminal
+
-
+
-
+
Open a new Terminal window by clicking on the icon in the top left corner of the screen.
+
+
+ -
+
You can create a new directory using the
+mkdircommand++++++mkdir my-new-directory +
+
+ - You can list the contents of the current directory using
ls
+ -
+
To enter your new directory use the
+cdcommand++++++cd my-new-directory +
+
+
Step 5 - Record video to a file
+Seeing the intruder on the screen in a camera preview isn’t much help to you with detecting intruders into your room. Instead, let’s record a video of the intruder for you to view later on when you get home.
+-
+
-
+
Create a variable called
+filenameinside your infinite loop to store the video file name
+filename = "intruder.h264" +In case you are wondering,
+.h264is the video format
+ -
+
Find the line of code where you begin the camera preview and replace it with a line of code to start recording a video
+
+camera.start_recording(filename) +
+ -
+
Find the line of code where you stop the camera preview and replace it with a line of code to stop recording.
+
+
+
+I need a hint
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+ -
+
- Save and run your program by pressing F5. Check that a file called
intruder.h264appears in the same folder as yourparent-detector.pyfile.
+
Every time a new intruder triggers the motion sensor the video will be overwritten. If you have lots of pesky parents or brothers and sisters intruding into your room, you want to keep videos of all of them. Can you write some code to automatically find out the current date and time and add it to the video filename so that each video we take will have a different filename?
+
+
+````
+
+---
+
+## Save
+
+The `save` tag renders a "Save your project" panel. It takes no content.
+
+```example
+--- save ---
+·
+Getting the date and time in Python
+
+
+[[[generic-python-timestamps]]]
+
+
+```
+
+---
+
+## New page
+
+The `new-page` tag inserts a print page break.
+
+```example
+First Page
+
+--- new-page ---
+
+Second Page
+·
+Save your project
+First Page
+ +Second Page
+``` + +--- + +## No print + +Content inside a `no-print` block is hidden when printing. + +```example +--- no-print --- +This won't print. +--- /no-print --- +· +
+
+```
+
+---
+
+## Print only
+
+Content inside a `print-only` block is only visible when printing.
+
+```example
+--- print-only ---
+This only appears in print.
+--- /print-only ---
+·
+This won’t print.
+
+
+```
+
+---
+
+## Quiz
+
+A `quiz` block renders a simple radio button poll. The question is defined in YAML front matter and
+the choices are a markdown list of radio items using `( )` notation.
+
+```example
+--- quiz ---
+---
+question: How are you feeling?
+---
+
+- ( ) Good
+- ( ) Bad
+- ( ) Okay
+
+--- /quiz ---
+·
+This only appears in print.
+
+
+
+```
+
+---
+
+## Knowledge quiz question
+
+A `question` block renders a self-marking quiz question. It contains a `choices` block with radio
+items using `( )` for incorrect and `(x)` for the correct answer. Optional `feedback` blocks provide
+per-choice feedback.
+
+### Simple question
+
+```example
+--- question ---
+
+What is 2 + 2?
+
+--- choices ---
+
+- ( ) 3
+- (x) 4
+- ( ) 5
+
+--- /choices ---
+
+--- /question ---
+·
+
+```
+
+### With legend front matter
+
+The legend can be overridden via a YAML front matter section inside the `question` block.
+
+```example
+--- question ---
+
+---
+legend: Question 1 of 3
+---
+
+What is 2 + 2?
+
+--- choices ---
+
+- ( ) 3
+- (x) 4
+- ( ) 5
+
+--- /choices ---
+
+--- /question ---
+·
+
+```
+
+### With per-choice feedback
+
+```example
+--- question ---
+
+Is the sky blue?
+
+--- choices ---
+
+- (x) Yes
+
+- ( ) No
+
+ --- feedback ---
+ Look outside on a clear day.
+ --- /feedback ---
+
+--- /choices ---
+
+--- /question ---
+·
+
+```
+
+### With single feedback
+
+```example
+--- question ---
+
+What food will the bug reach when these instructions are followed?
+
+
+
+1. Forward
+2. Forward
+3. Forward
+4. Turn left
+5. Forward
+6. Forward
+7. Turn right
+8. Forward
+9. Forward
+10. Turn right
+11. Forward
+12. Forward
+
+--- choices ---
+
+--- feedback ---
+Follow the instructions one at a time. Which food item does the bug reach?
+--- /feedback ---
+
+- (x) Apple
+- ( ) Banana
+- ( ) Orange
+- ( ) Doughnut
+
+--- /choices ---
+
+--- /question ---
+·
+
+```
+
+### With blocks in feedback
+
+````example
+--- question ---
+
+A dog sprite in Scratch has the following code:
+
+
+
+How would you get the dog sprite to change size?
+
+--- choices ---
+
+- ( ) Press the 'space' key
+
+ --- feedback ---
+ What code is attached to the
+ ```blocks3
+ when [space v] key pressed
+ ```
+ event block?
+ --- /feedback ---
+
+- ( ) Make a loud noise
+
+ --- feedback ---
+ What code is attached to the
+ ```blocks3
+ when [loudness v] > 10 :: events hat
+ ```
+ event block?
+ --- /feedback ---
+
+- ( ) Click the green flag
+
+ --- feedback ---
+ What code is attached to the
+ ```blocks3
+ when flag clicked
+ ```
+ event block?
+ --- /feedback ---
+
+- (x) Click on the dog sprite
+
+--- /choices ---
+
+--- /question ---
+·
+
+````
+
+---
+
+## Microbit code block
+
+A fenced code block with language `microbit` renders with the `language-microbit` class for the
+Microbit simulator widget.
+
+````example
+```microbit
+let x = 5
+```
+·
+let x = 5
+when flag clicked
+when flag clicked
+