Challenge 2 | Player Movement and Firing

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From the course by Unity

Core Interaction Programming

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Unity

Core Interaction Programming

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Course 1 of 4 in the Specialization Unity Certified Programmer Exam Preparation

Welcome to Core Interaction Programming, the first course in the Unity Certified Programmer Specialization from Unity Technologies. This course will help you prepare for the Unity Certified Programmer exam, the professional certification for entry to mid-level Unity programmers. Unity is used to create real-time 3D applications for many industries, including video games, automotive, film, training, and more. In this course, you will be challenged to solve realistic Unity programming problems that are aligned to topics covered on the exam. Throughout the first course, you will build the foundation for a 2D action video game: AsteraX. In doing so, you will practice many of the skills covered in the exam, including evaluating scripting needs from a project requirements document, implementing the three "C's" of an interactive applications (Character, Controls, Camera), providing user feedback through basic UI elements, and applying professional programming practices like developer testing. This is an intermediate course, intended for people who are ready for their first paying roles as Unity programmers, or enthusiasts who would like to verify their skills against a professional standard. To succeed, you should have at least 1-2 years of experience programming interactive applications in Unity. You should be proficient at programming in the C# language and familiar with Unity's scripting APIs. You should have experience in the full product development lifecycle, from concept to launch (and beyond). And you should understand multi-platform development, including deploying applications to XR (AR and VR) platforms.

From the lesson

Basic User Input and Object Management

This week, we'll begin implementing the basic application functionality that we planned the previous week. We'll give the user control over the ship, enable the firing of projectiles, and handle the tricky screen-wrap requirement. But first, we'll look at the importance of version control in professional projects, and Unity's version control solution, Collaborate.

Challenge 2 | Player Movement and Firing5:12

Solution 2A | Ship Movement7:53

Solution 2B | Turret Movement and Firing Bullets8:07

Solution 2C | Screen Wrap13:42

Meet the Instructors

Jeremy Gibson Bond
Unity Technologies

Hi all. I'm Jeremy Gibson Bond and welcome back to

the Unity Certified Programmer exam preparation course.

In this video, we're going to be giving you your first programming challenge.

This is going to give you a chance to get your hands dirty with some C Sharp code.

This challenge is the PlayerShip,

movement, and firing challenge.

So first, let's take a look at the game

as it will be at the end of this challenge so you can get an idea for it,

and then we'll jump into the details.

So, here I am in Unity,

I've got my game paused.

I'm going to maximize on play and unpause it,

and probably zoom in here a bit.

Now, you can see that I can move my ship with the WASD keys or with the arrow keys,

so the ship moves nicely.

Also, you can see that it does not have

the square root of two thing where when I want to move on a diagonal.

It does not move faster on a diagonal than it does orthogonally.

Additionally, you can see that the turret points

at the mouse no matter where the mouse is,

and hen I click the left mouse button,

the mouse button is zero,

it fires a bullet and that bullet exists for two seconds.

Now, no matter where the ship is it will fire at the mouse cursor which is nice.

You can see these bullets wrap the screen.

Additionally, the ship wraps the screen.

So, that's the result.

It's pretty straightforward, but it's a place to start on this.

Now, let's go ahead and talk about some of the core requirements of this challenge,

this is of course, in the documentation that you have as well,

but I'm going to go through it here too for you.

So, the first thing is that you're going to get a starter project,

and that starter project is going to have all the prefabs that you need,

and it's going to have a few other things set up.

So hey, now let's take a look at this starter project that you're going to receive.

You can see here I've opened up scene zero which is already set up for you a little bit.

It's got the main camera set up as an orthographic camera,

and it has a size of nine which works well with the

16 by nine window that we have down here in the game pane.

Now, the game pane on your computer is probably not already set up as 1080p,

so go ahead and create a 1920 by

1080 resolution for this and aspect ratio

for this to make sure that you're working at the same resolution that I am.

In here you also have just a standard directional light,

and then the PlayerShip,

and we can zoom in on this model,

and you're on this game object,

and you can see that the PlayerShip has a collider,

and then a TurretRotator which will rotate the turret.

That's where you put the script to rotate the turret to follow the mouse,

and then a model for that turret,

and a model for the ship itself.

You're not going to be doing this now,

but in course two,

you're going to be swapping out these models for other ship bodies and ship turrets,

and so I've separated them here in the prefab already.

There's nothing in the scripts folder yet because you need to write that.

Under the scenes folder is the scene we've just been looking at.

Under prefabs, you have prefabs for the bullet,

for the PlayerShip, and then again,

as a look ahead,

prefab ship parts for the asteroids_ship0 and

asteroids_turret0 though those are not actually used in this project.

Under standard assets you see cross-platform input.

We're going to be using the cross-platform input manager to allow us to treat tilting

a phone and tapping on it the same way that you would

treat input.get axis horizontal and vertical,

and input.get axis fire.

So, you can respond to the mobile input the same way you respond to the keyboard mouse.

So that's something that I encourage you to use here.

Go ahead and look in the Unity documentation at

cross-platform input manager if you haven't used it before.

Then finally under textures and materials,

we have materials and textures,

and a space background that you're going to implement in this challenge.

So, that's it for our starter project.

Now, let's talk a little bit about some of the things

you're going to need to implement. All right.

So as I said, we want you to use the cross-platform input manager.

So you're going to be using things like the horizontal and vertical axes,

as well as, the fire axis.

Make sure that that ship tilts with the horizontal and vertical movement,

and fire using the fire axis like I said.

The mouse is going to aim and shoot by clicking the mouse zero button.

You need to instantiate bullets,

have those bullets be destroyed after two seconds,

and have them wrap around the screen,

and the ship is going to wrap around the screen as well.

The camera's already set up for you,

but you need to scale that space background to fill

the camera just in case you find out that you aren't going to be developing for 1080p.

Then finally, particle effects are not necessary at this point,

I only mentioned that because you saw them in

the earlier video where we looked at the final game.

Don't worry about that right now.

That's it for this challenge.

I hope you have fun with it, and I look forward to seeing you in the next video. Thanks.

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