How to make cat mice in Scratch?

How to make cat mice in Scratch? - briefly

Creating a cat and mouse game in Scratch involves using sprites and scripts to define their behaviors. The cat should follow the mouse, while the mouse should move randomly or avoid the cat.

To begin, import or draw the cat and mouse sprites. For the cat, use a "forever" loop with "if on edge, bounce" and "point towards mouse" blocks to make it chase the mouse. For the mouse, use a "forever" loop with "move 10 steps" and "if on edge, bounce" to make it move randomly. Additionally, you can add a scoring system by using variables to keep track of points when the cat catches the mouse. To make the game more engaging, consider adding obstacles or power-ups that the mouse can use to evade the cat.

How to make cat mice in Scratch? - in detail

Creating a simple game where a cat chases mice in Scratch involves several steps. Scratch is a visual programming language that allows users to create interactive stories, games, and animations. To begin, you need to have Scratch installed on your computer or access it through the Scratch website. Once you are ready, follow these detailed instructions to create your cat and mice game.

First, open Scratch and create a new project. You will start by designing the sprites for your game. The main sprites you will need are a cat and mice. You can use the built-in sprite library or draw your own. To add a sprite, click on the "Choose a Sprite" button and select the cat and mouse images you prefer. You can also upload your own images if you have them.

Next, you need to set up the stage. The stage is where all the action will take place. You can design the background by clicking on the "Choose a Backdrop" button and selecting an appropriate background. Alternatively, you can create your own background using the paint editor.

Now, let's program the cat to move. Click on the cat sprite to select it, and then go to the "Code" tab. You will need to write scripts that allow the cat to move around the stage. Here is a basic script to make the cat move using the arrow keys:

1. Drag and drop the "when green flag clicked" block from the "Events" category to the scripting area.
2. Attach a "forever" block from the "Control" category to the "when green flag clicked" block.
3. Inside the "forever" block, add an "if" block from the "Control" category.
4. In the "if" block, use the "key pressed" block from the "Sensing" category to detect when the right arrow key is pressed.
5. Attach a "change x by" block from the "Motion" category to move the cat to the right.
6. Repeat the process for the left, up, and down arrow keys to allow the cat to move in all directions.

To make the mice move, you can use a similar approach. However, you may want the mice to move randomly around the stage. Here is a script to make a mouse move randomly:

1. Click on the mouse sprite to select it.
2. Go to the "Code" tab and drag and drop the "when green flag clicked" block.
3. Attach a "forever" block to the "when green flag clicked" block.
4. Inside the "forever" block, add a "go to x: y:" block from the "Motion" category.
5. Use the "pick random" block from the "Operators" category to generate random x and y coordinates.
6. Add a "wait" block from the "Control" category to pause the movement for a short period before moving again.

To add interactivity, you can make the cat catch the mice. When the cat touches a mouse, the mouse can disappear or be relocated to a random position. Here is a script to handle this interaction:

1. Click on the cat sprite to select it.
2. Go to the "Code" tab and add a "when green flag clicked" block.
3. Attach a "forever" block to the "when green flag clicked" block.
4. Inside the "forever" block, add an "if" block.
5. In the "if" block, use the "touching" block from the "Sensing" category to detect when the cat touches a mouse.
6. Attach a "hide" block from the "Looks" category to make the mouse disappear.
7. Alternatively, you can use a "go to x: y:" block with random coordinates to relocate the mouse.

You can repeat the process for multiple mice by duplicating the mouse sprite and assigning unique names to each one. This way, each mouse will have its own set of scripts and can be controlled independently.

Finally, test your game by clicking the green flag to start the program. The cat should be able to move around the stage using the arrow keys, and the mice should move randomly. When the cat touches a mouse, the mouse should disappear or be relocated.

Creating a cat and mice game in Scratch is a fun and educational way to learn programming concepts. By following these steps, you can develop a basic game and expand it with additional features and complexity as you become more comfortable with Scratch.