updated lessons
This commit is contained in:
Michael Elliot Braun
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# catch the egg game lesson
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a game to catch eggs in a basket #var #data #if #random #min #max #mod #plot #unplot #pause #accceleration #docs
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### @video td/videos/catch-the-egg-game-0
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## Topic
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Variables
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## Quick Links
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* [tutorial](/microbit/lessons/catch-the-egg-game/tutorial)
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* [quiz](/microbit/lessons/catch-the-egg-game/quiz)
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* [quiz answers](/microbit/lessons/catch-the-egg-game/quiz-answers)
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* [challenges](/microbit/lessons/catch-the-egg-game/challenges)
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## Class
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Year 7
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## Prior learning/place of lesson in scheme of work
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Learn how to create a catch the egg game game with **plot**, `led->plot` , **unplot**, `led->unplot`, and **acceleration** `input -> acceleration` to turn on and off LED lights on the LED screen. We will be learning how to create a catch the egg game app using global variables, forever loop, local variable, input acceleration, math min, math max, math random, math mod, if (conditionals), game library as well as simple commands, such as led plot, led unplot, and pause.
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## Documentation
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* **variables** : [read more...](/microbit/reference/variables/var)
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* **forever** : [read more...](/microbit/reference/basic/forever)
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* **unplot** : [read more...](/microbit/reference/led/unplot)
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* **plot** : [read more...](/microbit/reference/led/plot)
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* **if** : [read more...](/microbit/reference/logic/if)
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* **acceleration** : [read more...](/microbit/reference/input/acceleration)
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* **math minimum number** : [read more...](/microbit/js/math)
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* **math maximum number** : [read more...](/microbit/js/math)
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* **math random number** : [read more...](/microbit/js/math)
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* **math modulus** : [read more...](/microbit/js/math)
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* **show number** : [read more...](/microbit/reference/basic/show-number)
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* **pause** : [read more...](/microbit/reference/basic/pause)
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## Objectives
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* learn how to create a global variable as a place where you can store data so that you can use it later in your code, accessible across functions and in nested code blocks
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* learn how to repeat code in the background forever
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* learn how to turn off a LED light on the LED screen
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* learn how to turn on a LED light on the LED screen
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* learn how to learn how to conditionally run code depending on whether a condition is true or not
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* learn how to learn how to get the acceleration value (g-force), in one of three specified dimensions
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* learn how to return the smaller of two numbers
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* learn how to return the larger of two numbers
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* learn how to return a random number
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* learn how to return the modulus
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* learn how to show a number of the BBC micro:bit screen
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* learn how to pause your code for the specified number of milliseconds
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## Progression Pathways / Computational Thinking Framework
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#### Algorithms
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* Designs solutions (algorithms) that use repetition and two-way selection, ie if, then and else.(AL)
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* Uses logical reasoning to predict outputs, showing an awareness of inputs (AL)
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* Recognises that different solutions exist for the same problem (AL) (AB) Understands that iteration is the repetition of a process such as a loop (AL)
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* Represents solutions using a structured notation (AL) (AB)
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#### Programming & Development
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* Creates programs that implement algorithms to achieve given goals (AL)
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* Declares and assigns variables(AB)
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* Understands the difference between, and appropriately uses if and if, then and else statements(AL)
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* Uses a variable and relational operators within a loop to govern termination (AL) (GE)
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* Has practical experience of a high-level textual language, including using standard libraries when programming(AB) (AL)
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* Uses a range of operators and expressions e.g. Boolean, and applies them in the context of program control. (AL)
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* Selects the appropriate data types(AL) (AB
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Computational Thinking Concept: AB = Abstraction; DE = Decomposition; AL = Algorithmic Thinking; EV = Evaluation; GE = Generalisation
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## Activity
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* time: 20 min.
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* [tutorial](/microbit/lessons/catch-the-egg-game/tutorial)
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* [quiz](/microbit/lessons/catch-the-egg-game/quiz)
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## Extended Activity
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* time: 20 min.
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* [challenges](/microbit/lessons/catch-the-egg-game/challenges)
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## Homework
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* Extended Activity: [challenges](/microbit/lessons/catch-the-egg-game/challenges)
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# catch the egg game challenges
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Coding challenges for catch the egg game.
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## Before we get started
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Complete the following guided tutorial:
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* [tutorial](/microbit/lessons/catch-the-egg-game/tutorial)
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At the end of the tutorial, click `keep editing`. Your code should look like this:
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```
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let basketX = 2
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let eggX = 2
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let eggY = 0
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basic.forever(() => {
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led.unplot(basketX, 4)
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led.unplot(eggX, eggY)
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eggY = eggY + 1
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led.plot(eggX, eggY)
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basic.pause(300)
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let accX = input.acceleration("x")
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basketX = 2 + Math.min(2, Math.max(-2, accX / 200))
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led.plot(basketX, 4)
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if (eggY > 4) {
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eggY = -1
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eggX = Math.random(5)
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}
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basic.pause(300)
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})
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```
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### ~avatar avatar impressed
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### Challenge 1
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Let's start by adding the **game** library.
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### ~
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### ~avatar avatar improvised
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### Challenge 2
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Let's use an **IF** statement to detect if the egg and the basket are lined up.
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Now that we know when an egg is caught, we can keep track of the score! We need to use the `add score` function built into the game library to add `1` point for every egg that is caught. However, let's not forget to `remove life` if an egg falls off the display before it's caught!
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### ~
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```
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let basketX1 = 2
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let eggX1 = 2
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let eggY1 = 0
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basic.forever(() => {
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led.unplot(basketX1, 4)
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led.unplot(eggX1, eggY1)
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eggY1 = eggY1 + 1
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led.plot(eggX1, eggY1)
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basic.pause(300)
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let accX1 = input.acceleration("x")
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basketX1 = 2 + Math.min(2, Math.max(-2, accX1 / 200))
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led.plot(basketX1, 4)
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if (eggY1 > 4) {
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eggY1 = -1
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eggX1 = Math.random(5)
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}
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if (eggY1 == 4) {
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if (basketX1 == eggX1) {
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game.addScore(1) // ***
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} else {
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game.removeLife(1) // ***
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}
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}
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basic.pause(300)
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})
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```
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* Press the `run` button to test out your game.
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### ~avatar avatar encourage
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### Challenge 3
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Catching eggs gets easier with practice so let's make the eggs fall faster every 5 catches. We can do this by tracking how long the egg pauses in each position while falling with a global variable called **falling pause**. Let's create this variable and set it to `300` initially. Don't forget to also create a condition that will be true every 5 catches.
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### ~
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```
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let basketX2 = 2
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let eggX2 = 2
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let eggY2 = 0
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let fallingPause = 300 // ***
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basic.forever(() => {
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led.unplot(basketX2, 4)
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led.unplot(eggX2, eggY2)
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eggY2 = eggY2 + 1
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led.plot(eggX2, eggY2)
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basic.pause(300)
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let accX2 = input.acceleration("x")
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basketX2 = 2 + Math.min(2, Math.max(-2, accX2 / 200))
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led.plot(basketX2, 4)
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if (eggY2 > 4) {
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eggY2 = -1
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eggX2 = Math.random(5)
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}
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if (eggY2 == 4) {
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if (basketX2 == eggX2) {
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game.addScore(1)
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if (math.mod(game.score(), 5) == 0) {
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}
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} else {
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game.removeLife(1)
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}
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}
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basic.pause(300)
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})
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```
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### ~avatar avatar surprised
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### Challenge 4
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### @video td/videos/catch-the-egg-game-4
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Let's make the egg fall faster by decreasing the amount of time it pauses in each position by decreasing **falling pause** by `25` every 5 catches. Now, instead of pausing for 300 milliseconds we can pause for the value of **falling pause**.
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```
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let basketX3 = 2
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let eggX3 = 2
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let eggY3 = 0
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let fallingPause1 = 300
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basic.forever(() => {
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led.unplot(basketX3, 4)
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led.unplot(eggX3, eggY3)
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eggY3 = eggY3 + 1
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led.plot(eggX3, eggY3)
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basic.pause(300)
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let accX3 = input.acceleration("x")
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basketX3 = 2 + Math.min(2, Math.max(-2, accX3 / 200))
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led.plot(basketX3, 4)
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if (eggY3 > 4) {
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eggY3 = -1
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eggX3 = Math.random(5)
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}
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if (eggY3 == 4) {
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if (basketX3 == eggX3) {
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game.addScore(1)
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if (math.mod(game.score(), 5) == 0) {
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fallingPause1 = fallingPause1 - 25 // ***
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}
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} else {
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game.removeLife(1)
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}
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}
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basic.pause(fallingPause1) // ***
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})
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```
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Fantastic! Your game is now ready to show off.
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* Press the `run` button to see your finished game!
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# catch the egg game quiz answers
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Programming a game of catch the egg using the accelerometer
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## Name
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## Directions
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Use this activity document to guide your work in the [catch the egg tutorial](/microbit/lessons/catch-the-egg-game/tutorial)
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Answer the questions while completing the tutorial. Pay attention to the dialogues!
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## 1. Write the data type for the global variables 'basket' and 'egg'.
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<br/>
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'Basket' and 'egg' are stored as **Number**.
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## 2. Write the code to plot the initial position of the egg and the basket using the variables 'egg x', 'egg y', and 'basket x'. The code should arrange the egg and basket as shown below.
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<br/>
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```
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led.plot(eggX, eggY)
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led.plot(basketX, 4)
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```
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## 3. Write the three lines of code that moves the egg down. (You need to unplot the egg's current position, update its position variables, and plot its new position.
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<br/>
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```
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led.unplot(eggX, eggY)
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eggY = eggY + 1
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led.plot(eggX, eggY)
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```
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## 4. Write the code that calculates 'basket x' given the variable 'acc x'.
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<br/>
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```
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let accX = input.acceleration("x")
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basketX = 2 + Math.min(2, Math.max(-2, accX / 200))
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```
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Note: the first line of code in this answer is optional.
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## 5. Write the code that resets the egg after it has fallen past the bottom of the BBC micro:bit.
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<br/>
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```
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if (eggY > 4) {
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eggY = -1
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eggX = Math.random(5)
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}
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```
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@ -1,34 +0,0 @@
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# catch the egg game quiz
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Programming a game of catch the egg using the accelerometer.
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## Name
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## Directions
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Use this activity document to guide your work in the [catch the egg tutorial](/microbit/lessons/catch-the-egg-game/tutorial)
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Answer the questions while completing the tutorial. Pay attention to the dialogues!
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## 1. Write the data type for the global variables 'basket' and 'egg'.
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<br/>
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## 2. Write the code to plot the initial position of the egg and the basket using the variables 'egg x', 'egg y', and 'basket x'. The code should arrange the egg and basket as shown below.
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<br/>
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## 3. Write the three lines of code that moves the egg down. (You need to unplot the egg's current position, update its position variables, and plot its new position.
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<br/>
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## 4. Write the code that calculates 'basket x' given the variable 'acc x'.
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<br/>
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## 5. Write the code that resets the egg after it has fallen past the bottom of the BBC micro:bit.
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<br/>
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@ -1,8 +0,0 @@
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# catch the egg
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Programming a game of 'catch the egg' using the accelerometer in Touch Develop #docs #functions #var
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Programming a game of 'catch the egg' using the accelerometer
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* [tutorial](/microbit/lessons/catch-the-egg-game/tutorial)
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* [challenges](/microbit/lessons/catch-the-egg/challenges)
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