Name: Angry Birdsコーディングチュートリアル - CS50のゲーム開発入門 (Angry Birds Coding Tutorial - CS50's Intro to Game Development)
Uploaded: 2021-01-14T10:19:30.000Z
Duration: 1 h 33 min 25 s
Description: VoiceTubeの動画で発音を聞きながら英語表現を覚えよう！学べる英語：

And today we're going to be venturing out of the 8-bit world

and back into a more modern era of gaming.

I have pretty fond memories of Angry Birds, actually.

It was the first mobile game that I remember

playing where I realized that mobile was actually a viable platform for gaming.

I played it, I think, back in 2009, was when it was first released.

The goal, if you're unfamiliar, is you have

birds that you control by a sling shot on the left side of the screen.

And then these pigs that have stolen your eggs,

you're trying to destroy them or kill them

by knocking down their fortresses made out of various materials, wood, glass,

But the gist of it is, basically, just sling shot a bird into some structure,

And the whole entire underlying mechanism

for how things work is via a physics engine,

which we'll talk about today in lecture, called Box2D Probably

But that's the overall structure of the game.

It's literally just throwing things into structures, knocking them down.

And then that tactile and fun game play makes for really great mobile gaming.

This is a screenshot of the first level in the first Angry Birds, which

This is a sample from one of their newer games.

As you can see, it's taken a whole new layer here.

There's stone and a bunch of intricately varying structures and new creatures

The game has changed a lot, but the formula has stayed the same.

And today we'll explore the foundation of what makes this game work.

And the topics today, a smaller than usual.

But Box2D, we can consider as being a pretty large topic.

We'll be talking about Box2D, which is the physics

And via Love2D, which has its own wrapper for Box2D.

And we'll also talk a little bit about mouse input, which you haven't really

But it's very apt, especially in the context of mobile gaming.

Because mouse input and touch input are synonymous.

If we have a volunteer come up on stage to showcase

So let me make sure I'm in the right directory here.

So whenever you're ready, go ahead and press Enter.

So this is a little demo I put together to demonstrate the concepts we'll

This is just the Start screen, but it already

shows Box2D representing a bunch of these square shaped aliens, which

we'll actually be what we're trying to target in the game.

But notice that they all fell and had their own collision

and their own physics that took place, and I didn't have to manually code

This is all stuff that Box2D takes care of for us.

And we'll see it used to great effect soon.

If you go ahead and just click anywhere on the screen,

So this is a very simple representation of what Angry Birds is.

You start on the left side of the screen.

You have a bird, in this case an alien, we

used a free art pack that uses aliens instead of birds,

You have an alien that you can click and drag.

So if you click it and then drag around, you

can see the trajectory that you'll have when you let go of the mouse.

So we're simulating where it's going to go via these purple circles.

And then the goal in Angry Birds is to throw the bird into,

or the alien, into the fortress guarding the pigs,

So if you go ahead and just launch the bird by letting go of the mouse

What happened was we shot the alien into the structure.

It destroyed one of the wooden blocks guarding the other alien.

And then, as soon as that happened, the top box,

because these are all being simulated via Box2D's physics engine,

that other box was detected as being unsupported.

And we've coded it so that when a collision occurs

between an obstacle and our alien of sufficient speed,

And this time we hit both of those at the same time.

So it triggered both of those being deleted.

So after it stops moving, which is similar to how

it behaves in the original game, it's going to let us try again to shoot.

And then we launch and hit it, we kill it and then we get a victory.

So that's the overall underlying foundation for what Angry Birds is.

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Angry Birdsコーディングチュートリアル - CS50のゲーム開発入門 (Angry Birds Coding Tutorial - CS50's Intro to Game Development)

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