raspberrypilearning · ninaszymor · Jun 18, 2020 · Jun 18, 2020 · Jun 18, 2020 · Jun 18, 2020
diff --git a/af-ZA/images/banner.png b/af-ZA/images/banner.png
diff --git a/af-ZA/images/snow-costume.png b/af-ZA/images/snow-costume.png
diff --git a/af-ZA/images/snow-deer.png b/af-ZA/images/snow-deer.png
diff --git a/af-ZA/images/snow-final.png b/af-ZA/images/snow-final.png
diff --git a/af-ZA/images/snow-hit.png b/af-ZA/images/snow-hit.png
diff --git a/af-ZA/images/snow-minmax.png b/af-ZA/images/snow-minmax.png
diff --git a/af-ZA/images/snow-mouse.png b/af-ZA/images/snow-mouse.png
diff --git a/af-ZA/images/snow-rock.png b/af-ZA/images/snow-rock.png
diff --git a/af-ZA/images/snow-slider.png b/af-ZA/images/snow-slider.png
diff --git a/af-ZA/images/snow-small.png b/af-ZA/images/snow-small.png
diff --git a/af-ZA/images/snow-test.png b/af-ZA/images/snow-test.png
diff --git a/af-ZA/images/snowball-sprite.png b/af-ZA/images/snowball-sprite.png
diff --git a/af-ZA/images/target-sprite.png b/af-ZA/images/target-sprite.png
diff --git a/af-ZA/meta.yml b/af-ZA/meta.yml
@@ -0,0 +1,29 @@
+---
+hero_image: images/banner.png
+listed: true
+ingredient: false
+copyedit: false
+title: Snowball fight
+description: Make a game in which you have to throw snowballs at a target
+version: 4
+last_tested: 2018-04-11
+steps:
+  - 
+    title: Introduction
+  - 
+    title: Making a snowball
+  - 
+    title: Throwing a snowball
+    completion:
+      - engaged
+  - 
+    title: Realistic movement
+  - 
+    title: The target
+    completion:
+      - internal
+  - 
+    title: 'Challenge: improve your game!'
+    challenge: true
+  - 
+    title: What next?
diff --git a/af-ZA/resources/SnowballFightResources.sb3 b/af-ZA/resources/SnowballFightResources.sb3
diff --git a/af-ZA/scratch-translatable.txt b/af-ZA/scratch-translatable.txt
@@ -0,0 +1,13 @@
+snowball-aim
+
+normal
+
+power
+
+throw
+
+snowball
+
+You got me!
+
+new shot
diff --git a/af-ZA/solutions/SnowballFight.sb3 b/af-ZA/solutions/SnowballFight.sb3
diff --git a/af-ZA/step_1.md b/af-ZA/step_1.md
@@ -0,0 +1,73 @@
+--- 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/snowball-fight-scratch2).
+
+--- /no-print ---
+
+## Introduction
+
+In this project you're going to make a game in which you have to throw snowballs at a target.
+
+### What you will make
+
+--- no-print ---
+
+Use the mouse pointer to angle the snowball and hold down the mouse button to choose the snowball's power.
+
+<div class="scratch-preview">
+  <iframe allowtransparency="true" width="485" height="402" src="https://scratch.mit.edu/projects/embed/302159331/?autostart=true" frameborder="0" scrolling="no"></iframe>
+  <img src="images/snow-final.png">
+</div>
+
+--- /no-print ---
+
+--- print-only ---
+
+![complete project](images/snow-final.png)
+
+--- /print-only ---
+
+--- collapse ---
+---
+title: What you will need
+---
+
+### Hardware
+
++ A computer capable of running Scratch
+
+### Software
+
++ Scratch 3 (either [online](https://rpf.io/scratchon){:target="_blank"} or [offline](https://rpf.io/scratchoff){:target="_blank"})
+
+### Downloads
+
+The starter project can be found [here](https://rpf.io/p/en/snowball-fight-go){:target="_blank"}.
+
+--- /collapse ---
+
+--- collapse ---
+---
+title: What you will learn
+---
+
+- How to animated sprites
+- How to react to mouse input
+- how to use broadcasts
+
+--- /collapse ---
+
+--- collapse ---
+---
+title: Additional information for educators
+---
+
+--- no-print ---
+
+If you need to print this project, please use the [printer-friendly version](https://projects.raspberrypi.org/en/projects/snowball-fight/print){:target="_blank"}.
+
+--- /no-print ---
+
+You can find the [completed project here](https://rpf.io/p/en/snowball-fight-get){:target="_blank"}.
+
+--- /collapse ---
diff --git a/af-ZA/step_2.md b/af-ZA/step_2.md
@@ -0,0 +1,112 @@
+## Making a snowball
+
+Let's make a snowball, that you can throw around your stage.
+
+--- task ---
+
+Open the Scratch starter project.
+
+**Online**: open the [starter project](https://rpf.io/snowball-fight-on){:target="_blank"}.
+
+If you have a Scratch account you can make a copy by clicking **Remix**.
+
+**Offline**: open the [starter project](https://rpf.io/p/en/snowball-fight-go){:target="_blank"} in the offline editor.
+
+If you need to download and install the Scratch offline editor, you can find it at [rpf.io/scratchoff](https://rpf.io/scratchoff){:target="_blank"}.
+
+In the starter project, you should see a blank stage and snowball sprite.
+
+--- /task ---
+
+--- task ---
+
+The 'Snowball' sprite contains 2 costumes, a normal costume, and one that shows which direction the snowball is facing.
+
+![snowball costumes](images/snow-costume.png)
+
+--- /task ---
+
+--- task ---
+
+First, let's allow the player to change the angle of the snowball. Add this code to your snowball sprite:
+
+![snowball sprite](images/snowball-sprite.png)
+
+```blocks3
+when flag clicked
+wait (0.5) seconds
+go to x:(-200) y:(-130)
+point in direction (90)
+switch costume to (snowball-aim v)
+repeat until <mouse down?>
+    point towards (mouse-pointer v)
+end
+```
+
+--- /task ---
+
+--- task ---
+
+Test out your project by clicking the green flag. You should see that your snowball follows the mouse, until you press the mouse button.
+
+![snow ball aim sprite pointing at mouse pointed](images/snow-mouse.png)
+
+--- /task ---
+
+--- task ---
+
+Let's also allow the player to decide on how powerful the snowball should be thrown. Create a new variable called `power`{:class="block3variables"}.
+
+[[[generic-scratch3-add-variable]]]
+
+--- /task ---
+
+--- task ---
+
+Drag your new variable display to the bottom of the stage, near the snowball. Right-click on the variable display and click 'slider'.
+
+![variable changed to slider](images/snow-slider.png)
+
+--- /task ---
+
+--- task ---
+
+Add code to set your new `power`{:class="block3variables"} variable to 0 when the flag is clicked.
+
+![snowball sprite](images/snowball-sprite.png)
+
+```blocks3
+when flag clicked
++ set [power v] to (0)
+```
+
+--- /task ---
+
+--- task ---
+
+Now that you have a `power`{:class="block3variables"} variable, you can increase the power of the snowball _after_ the direction has been chosen with this code:
+
+![snowball sprite](images/snowball-sprite.png)
+
+```blocks3
+repeat until <mouse down?>
+    point towards (mouse-pointer v)
+end
++repeat until < not <mouse down?> >
+    point towards (mouse-pointer v)
+    change [power v] by (1)
+    wait (0.1) seconds
+end
+```
+
+This code means that you have to _keep the mouse button held down_ after choosing the direction, to choose the snowball's power.
+
+--- /task ---
+
+--- task ---
+
+Test your snowball, to see if you can choose its angle and power.
+
+![power variable at 35 next to snowball aim](images/snow-test.png)
+
+--- /task ---
diff --git a/af-ZA/step_3.md b/af-ZA/step_3.md
@@ -0,0 +1,108 @@
+## Throwing a snowball
+
+--- task ---
+
+Add a block to the _end_ of your snowball code, to `broadcast`{:class="block3control"} that you're throwing a snowball:
+
+![snowball sprite](images/snowball-sprite.png)
+
+```blocks3
+when flag clicked
+set [power v] to (0)
+wait (0.5) seconds
+go to x:(-200) y:(-130)
+point in direction (90)
+switch costume to (snowball-aim v)
+repeat until <mouse down?>
+    point towards (mouse-pointer v)
+end
+repeat until < not <mouse down?> >
+    point towards (mouse-pointer v)
+    change [power v] by (1)
+    wait (0.1) seconds
+end
++ broadcast (throw v) and wait
+```
+
+--- /task ---
+
+--- task ---
+
+Add this code to your snowball, to move until it reaches the edge of the stage:
+
+![snowball sprite](images/snowball-sprite.png)
+
+```blocks3
+when I receive [throw v]
+switch costume to (snowball v)
+repeat until < touching [edge v]? >
+    move (power) steps
+end
+hide
+```
+
+The code uses the `power`{:class="block3variables"} variable to decide how fast to move.
+
+--- /task ---
+
+--- task ---
+
+Now that you're hiding the snowball when it touches the edge, add code to `show`{:class="block3looks"} the snowball when the flag is clicked, _just_ after the snowball switches to the `snowball-aim`{:class="block3looks"} costume.
+
+![snowball sprite](images/snowball-sprite.png)
+
+```blocks3
+when flag clicked
+set [power v] to (0)
+wait (0.5) seconds
+go to x:(-200) y:(-130)
+point in direction (90)
+switch costume to (snowball-aim v)
++show
+repeat until <mouse down?>
+    point towards (mouse-pointer v)
+end
+repeat until < not <mouse down?> >
+    point towards (mouse-pointer v)
+    change [power v] by (1)
+    wait (0.1) seconds
+end
+broadcast (throw v) and wait
+```
+
+--- /task ---
+
+--- task ---
+
+Test out your snowball a few times. Does it move at different angles and different speeds?
+
+--- /task ---
+
+--- task ---
+
+If you want to be able to throw your snowball lots of times, just add a `forever`{:class="block3control"} loop around your snowball `when flag clicked`{:class="block3events"} code.
+
+![snowball sprite](images/snowball-sprite.png)
+
+```blocks3
+when flag clicked
++forever
+set [power v] to (0)
+wait (0.5) seconds
+go to x:(-200) y:(-130)
+point in direction (90)
+switch costume to (snowball-aim v)
+show
+repeat until <mouse down?>
+    point towards (mouse-pointer v)
+end
+repeat until < not <mouse down?> >
+    point towards (mouse-pointer v)
+    change [power v] by (1)
+    wait (0.1) seconds
+end
+broadcast (throw v) and wait
+end
+```
+
+--- /task ---