raspberrypilearning · raspberrypitranslationsbot · Apr 4, 2020 · Apr 4, 2020 · Apr 4, 2020 · Apr 4, 2020
diff --git a/af-ZA/images/banner.png b/af-ZA/images/banner.png
diff --git a/af-ZA/images/cat-sprite.png b/af-ZA/images/cat-sprite.png
diff --git a/af-ZA/images/cat-walk-through-platform.png b/af-ZA/images/cat-walk-through-platform.png
diff --git a/af-ZA/images/cats-finished.png b/af-ZA/images/cats-finished.png
diff --git a/af-ZA/images/door-sprite.png b/af-ZA/images/door-sprite.png
diff --git a/af-ZA/images/draw-a-line.png b/af-ZA/images/draw-a-line.png
diff --git a/af-ZA/images/falling-cats.png b/af-ZA/images/falling-cats.png
diff --git a/af-ZA/images/flailing-at-edge.png b/af-ZA/images/flailing-at-edge.png
diff --git a/af-ZA/images/flower-random.png b/af-ZA/images/flower-random.png
diff --git a/af-ZA/images/pen-sprite.png b/af-ZA/images/pen-sprite.png
diff --git a/af-ZA/meta.yml b/af-ZA/meta.yml
@@ -0,0 +1,26 @@
+---
+title: CATS!
+hero_image: images/banner.png
+description: Create a game in which you guide cats to safety and stop them from falling into holes
+listed: true
+copyedit: true
+version: 4.0.2
+last_tested: 2018-10-18
+steps:
+  - 
+    title: Introduction
+  - 
+    title: Draw lines
+  - 
+    title: Clone cats
+  - 
+    title: Make the cats move
+  - 
+    title: Stick to the lines
+  - 
+    title: Get to safety
+  - 
+    title: "Challenge: more obstacles"
+    challenge: true
+  - 
+    title: What next?
diff --git a/af-ZA/resources/cats-resources.sb3 b/af-ZA/resources/cats-resources.sb3
diff --git a/af-ZA/solutions/cats-solution.sb3 b/af-ZA/solutions/cats-solution.sb3
diff --git a/af-ZA/step_1.md b/af-ZA/step_1.md
@@ -0,0 +1,66 @@
+\--- no-print \---
+
+This is the **Scratch 3** version of the project. There is also a [Scratch 2 version of the project](https://projects.raspberrypi.org/en/projects/cats-scratch2).
+
+\--- /no-print \---
+
+## Introduction
+
+In this project, you will create a game in which you need to guide cats to safety and not let any of them fall through the gaps!
+
+### What you will make
+
+\--- no-print \---
+
+Click and drag with the mouse to draw a line with the pencil. Your goal is to stop the cats from falling into holes by creating a safe path to the exit.
+
+<div class="scratch-preview">
+  <iframe allowtransparency="true" width="485" height="402" src="https://scratch.mit.edu/projects/embed/253667883/?autostart=false" frameborder="0" scrolling="no"></iframe>
+</div>
+
+\--- /no-print \---
+
+\--- print-only \---
+
+![Cats finished](images/cats-finished.png)
+
+\--- /print-only \---
+
+## \--- collapse \---
+
+## title: What you will learn
+
++ How to use a `forever`{:class="block3control"} loop to constantly generate moving cats
++ How to use a `repeat until`{:class="block3control"} loop to ensure your cats follow a line
+
+\--- /collapse \---
+
+## \--- collapse \---
+
+## title: What you will need
+
+### Hardware
+
++ A computer capable of running Scratch 3
+
+### Software
+
++ Scratch 3 (either [online](http://rpf.io/scratchon){:target="_blank"} or [offline](http://rpf.io/scratchoff){:target="_blank"})
+
+### Downloads
+
++ [Offline starter project](http://rpf.io/p/en/cats-go){:target="_blank"}
+
+\--- /collapse \---
+
+## \--- collapse \---
+
+## title: Additional notes for educators
+
+\--- no-print \---
+
+If you need to print this project, please use the [printer-friendly version](https://projects.raspberrypi.org/en/projects/cats/print). \--- /no-print \---
+
+You can find the [completed project here](http://rpf.io/p/en/cats-get){:target="_blank"}.
+
+\--- /collapse \---
diff --git a/af-ZA/step_2.md b/af-ZA/step_2.md
@@ -0,0 +1,140 @@
+## Draw lines
+
+\--- task \---
+
+Open the 'CATS!' Scratch starter project.
+
+**Online:** open the starter project at [rpf.io/cats-on](http://rpf.io/cats-on){:target="_blank"}.
+
+If you have a Scratch account you can make a copy by clicking **Remix**.
+
+**Offline:** open the [starter project](http://rpf.io/p/en/cats-go) in the offline editor. If you need to download and install the Scratch offline editor, you can find it at [rpf.io/scratchoff](http://rpf.io/scratchoff){:target="_blank"}.
+
+\--- /task \---
+
+\--- task \---
+
+Add the Pen extension to your project.
+
+[[[generic-scratch3-add-pen-extension]]]
+
+\--- /task \---
+
+\--- task \---
+
+Click on the sprite called 'Pen', and add code to set the pen colour to the same blue as the obstacles on the Stage.
+
+![Pen sprite](images/pen-sprite.png)
+
+```blocks3
+when flag clicked
+set pen color to [#0000ff]
+erase all
+set pen size to (5)
+```
+
+To select a colour, click on the colour square in the `set pen color`{:class="block3extensions"} block to make your mouse cursor turn into a pipette, and then click on the correct colour on the Stage.
+
+\--- /task \---
+
+\--- task \---
+
+Add some more code to make the sprite follow the mouse pointer. Test your program to check that the code works.
+
+![Pen sprite](images/pen-sprite.png)
+
+```blocks3
+forever
+go to (mouse pointer v)
+end
+```
+
+[[[generic-scratch3-saving]]]
+
+\--- /task \---
+
+\--- task \---
+
+Add some code to tell the sprite to draw a line on the Stage if the mouse button is pressed down.
+
+![Pen sprite](images/pen-sprite.png)
+
+\--- hints \--- \--- hint \---
+
+`If`{:class="block3control"} the `mouse is down`{:class="block3sensing"}, put the `pen down`{:class="block3extensions"}, and `else`{:class="block3control"}, lift the `pen up`{:class="block3extensions"}.
+
+\--- /hint \---
+
+\--- hint \---
+
+Here are the code blocks you need:
+
+```blocks3
+<mouse down?>
+
+pen down
+
+pen up
+
+if <> then
+else
+end
+```
+
+\--- /hint \---
+
+\--- hint \---
+
+This is what your code should look like:
+
+```blocks3
+when flag clicked
+set pen color to [#0000ff]
+erase all
+set pen size to (5)
+forever
+go to (mouse pointer v)
++ if <mouse down?> then
+pen down
+else
+pen up
+end
+```
+
+\--- /hint \---
+
+\--- /hints \--- \--- /task \---
+
+\--- task \---
+
+Test your code. You should be able to click and drag with the mouse to draw a blue line on the Stage.
+
+![Draw a line](images/draw-a-line.png)
+
+\--- /task \---
+
+You probably see that a blue dot always appears in the top right-hand corner of the Stage (it's circled in the image above). This is because, when you click the green flag to start the game, you press the mouse down, and so the pen immediately starts drawing.
+
+\--- task \---
+
+To stop this from happening, add a `pen up`{:class="block3extensions"} block at the start of the script, and a `wait one second`{:class="block3control"} block above the `forever`{:class="block3control"} block.
+
+![Pen sprite](images/pen-sprite.png)
+
+```blocks3
+when flag clicked
++ pen up
+set pen color to [#0000ff]
+erase all
+set pen size to (5)
++ wait (1) seconds
+forever
+go to (mouse pointer v)
+if <mouse down?> then
+pen down
+else
+pen up
+end
+```
+
+\--- /task \---
diff --git a/af-ZA/step_3.md b/af-ZA/step_3.md
@@ -0,0 +1,73 @@
+## Clone cats
+
+You want a never-ending stream of cats that the player has to guide along the path to the exit.
+
+\--- task \---
+
+Click on the sprite called 'Cat', and add some code to `hide`{:class="block3looks"} the sprite, and also to `clone`{:class="block3control"} it every three seconds.
+
+![Cat sprite](images/cat-sprite.png)
+
+```blocks3
+when flag clicked
+hide
+forever
+    create clone of (myself v)
+    wait (3) seconds
+end
+```
+
+\--- /task \---
+
+If you run the program now, nothing happens on the Stage. To check that a new Cat sprite clone is created every three seconds, make each clone appear and fall out of the sky.
+
+\--- task \---
+
+Add code to tell the sprite that `when it starts as a clone`{:class="block3control"}, it should `show`{:class="block3looks"} itself and fall until it `touches`{:class="block3sensing"} the blue floor that is drawn on the Stage.
+
+![Cat sprite](images/cat-sprite.png)
+
+\--- hints \--- \--- hint \---
+
+`When the sprite starts as a clone`{:class="block3control"}, `show`{:class="block3looks"} the sprite. `Repeatedly`{:class="block3control"} `Change`{:class="block3motion"} the sprite's `y` coordinate by `-2`, until the sprite `touches`{:class="block3sensing"} the blue Stage.
+
+\--- /hint \---
+
+\--- hint \---
+
+Here are the code blocks you need:
+
+```blocks3
+repeat until <>
+end
+
+show
+
+<touching color [#0000ff]?>
+
+change y by (-2)
+
+when I start as a clone
+```
+
+\--- /hint \---
+
+\--- hint \---
+
+This is what your code should look like:
+
+```blocks3
+when I start as a clone
+show
+repeat until <touching color [#0000ff]?>
+change y by (-2)
+end
+```
+
+\--- /hint \--- \--- /hints \---
+
+\--- /task \---
+
+When you click the green flag, you should see a new cat fall from the top of the Stage every three seconds. Every cat should land in a big pile of overlapping cats on the blue floor at the bottom.
+
+![Falling cats](images/falling-cats.png)