MoleMash App Development

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Questions and Answers

What is the purpose of the Canvas component in the MoleMash project?

To control the movement of the mole

To serve as a playing field for the game (correct)

To display the number of hits and misses

To reset the scores to zero

Which component is responsible for displaying the picture of the mole?

ResetButton

Sound1

Canvas1

Mole (correct)

What is the purpose of the Clock component in the MoleMash app?

To vibrate when the mole is touched

To make the mole move once per second (correct)

To reset the hit and miss counters

To control the speed of the game

What function does the ResetButton serve in the MoleMash project?

To reset the scores of hits and misses to zero Signup and view all the answers

How are the hits and misses displayed in the MoleMash app?

Using Label components Signup and view all the answers

What type of media feedback is provided when the mole is touched?

Sound that vibrates Signup and view all the answers

Which component is utilized to organize the display of hits and misses?

HorizontalArrangement Signup and view all the answers

Which action must be taken to begin using the MoleMash components in App Inventor?

Upload a mole image Signup and view all the answers

What is the maximum x coordinate for the left side of the mole to fit within the canvas without extending off the right edge?

164 Signup and view all the answers

What values can the y coordinate of the top of the mole take according to the given specifications?

From 0 to Canvas1.Height - Mole.Height Signup and view all the answers

What does the 'Fill parent' setting for the canvas width do?

It copies the width of the parent element, which is the screen. Signup and view all the answers

How is a random x coordinate for placing the mole generated?

By generating a random integer from 0 to Canvas1.Width - Mole.Width. Signup and view all the answers

Which block needs to be dragged to the procedure for moving the mole?

call Mole.MoveTo Signup and view all the answers

What is the initial value for the 'from' parameter when generating a random number for the mole's position?

0 Signup and view all the answers

What aspect of the mole’s properties matches its image size?

Both the width and height properties Signup and view all the answers

Why is it important to set the 'to' parameter when generating a random integer for the mole's position?

To ensure the mole fits within the canvas dimensions Signup and view all the answers

What is the primary function of the Canvas1.Touched block in the context described?

To indicate if the canvas or a sprite was touched Signup and view all the answers

What happens when the user successfully taps on the mole sprite?

The HitsCountLabel is incremented by 1 Signup and view all the answers

What should the else branch of the if-then statement handle?

The scenario where no sprite was touched Signup and view all the answers

How does the value of touchedSprite affect the scoring mechanism?

It determines whether to increment HitsCountLabel or MissesCountLabel Signup and view all the answers

Which component property is recommended to adjust for the mole's movement frequency?

TimerInterval for Clock1 Signup and view all the answers

What is the initial value set for both HitsCountLabel and MissesCountLabel?

0 Signup and view all the answers

What is the first block to be dragged out for handling touches on the canvas?

Canvas1.Touched Signup and view all the answers

What is the role of the plus sign (+) in the block creation process for scoring?

To increment the value of either HitsCountLabel or MissesCountLabel Signup and view all the answers

What should the Text property of the MissesLabel be set to?

Misses: Signup and view all the answers

What is the purpose of the MoveMole procedure?

To move the mole to a random location on the screen Signup and view all the answers

When should the MoveMole procedure be called?

Once the user successfully taps the mole Signup and view all the answers

What happens when the Reset button is pressed in the game?

The number of hits and misses resets to 0 Signup and view all the answers

What coordinates define the upper-left corner of the canvas in the mole game?

(0, 0) Signup and view all the answers

What is required to determine the maximum available x and y values for the mole to fit on the screen?

The Width and Height properties of the mole and the Canvas Signup and view all the answers

How does the canvas in the mole game function with respect to coordinates?

Coordinates start from (0, 0) and increase as you move right and down Signup and view all the answers

What recommended method should be used to tap on the mole in the game?

A finger Signup and view all the answers

What does the ResetButton.Click block specifically reset?

The values of HitsCountLabel.Text and MissesCountLabel.Text Signup and view all the answers

What keyboard shortcut is suggested for creating a block with the value 0?

Typing 0 directly in the block Signup and view all the answers

What happens when the user taps the mole in the MoleMash application?

The device vibrates briefly for 100 milliseconds Signup and view all the answers

In the MoleMash application, what is a suggested addition to improve gameplay?

Add a label to display how many times the mole has appeared Signup and view all the answers

How can the user alter the duration of the vibration when tapping the mole?

By changing a number in the Sound1.Vibrate block Signup and view all the answers

What is one idea suggested to penalize the user in the MoleMash game?

Adding a flower that penalizes the user if tapped Signup and view all the answers

What component is used to allow users to select a different image in the MoleMash application?

ImagePicker Signup and view all the answers

What is the result of pressing the Reset button during gameplay?

Hits and misses counters reset to zero Signup and view all the answers

Study Notes

MoleMash App

MoleMash app is made for Android devices using App Inventor.
In the app, the user has to tap on a mole (represented by an ImageSprite) as it moves randomly across the canvas.
The app keeps track of the number of hits and misses, and the score is reset via the "Reset" button.

Components

The app uses components like Canvas, ImageSprite, Button, Clock, Sound, and Labels.
They are used to create the playing field, display the mole, reset the score, control the movement of the mole, vibrate when the mole is touched and display the score.

Moving the Mole

The MoveMole procedure moves the mole to a random location on the canvas.
The MoveMole uses the random integer block to generate random x and y coordinates within the bounds of the Canvas.
The MoveMole is called at the start of the game and also every second using a clock timer.
The MoveMole procedure uses the Mole.MoveTo block with x and y coordinates to position the mole randomly.

Keeping Score

The Canvas1.Touched block triggers a check if the mole is touch.
The touchedSprite parameter indicates if a sprite was touch and if so, the score is updated accordingly.
Hits are counted if the touchedSprite parameter is True, and misses are counted if it's False.
The HitsCountLabel and MissesCountLabel are used to display the current hits and misses, respectively.
The ResetButton click event handler resets the score to 0 by setting the HitsCountLabel.Text and MissesCountLabel.Text to 0.

Vibrating when the mole is touched

The Sound1.Vibrate block vibrates the device for a specified duration.
When the mole is touched, the Sound1.Vibrate is called to vibrate the device.
The duration of the vibration is set in milliseconds and can be changed to customize the vibration feedback.

Variations

Possible variations include:
- Adding buttons to control the speed of the mole's movement.
- Tracking and displaying the number of times the mole has appeared.
- Adding a second ImageSprite that acts as a distractor, like a flower.
- Allowing users to select an image instead of the default mole through the ImagePicker component.

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Description

This quiz focuses on the development of the MoleMash app using App Inventor for Android devices. You will explore components like Canvas, ImageSprite, and how the mole moves across the screen. Test your knowledge about creating interactive mobile applications and the logic behind game mechanics.