Trigonometry | Gamedev Math

Greatest hits of trigonometry! We learn how to apply trigonometry by exploring how to set up aiming in top-down shooters & by introducing bullet spread!

I swear, this man gets a few extra hours each day compared to the rest of us.

**** MUSIC USED ****

[mirandaart]

all of a sudden high school math from years ago finally clicks in (loved watching this!)

[aldobernaltvbernal]

i genuinely do not understand how a video this good can have less than 100 views (84 at the time of writing)
this is a great intro to trig, you deserve way more recognition

[Leoleonpd]

The algorithm recommended this to me! Thanks for the helpful video! Your channel deserves so much growth. Good on you

[LighthoofDryden]

Ok look the math was fine but I need those macarons

[dominic_sanchez]

This video is great. I think using motion canvas would help increase the quality but I think what you have is charming in its own way. I like how fast paced everything is and still digestible. Younger me would've appreciated this video a lot when learning about trig.

[rohanvishayal]

Underrated af, this is quality content.

[pfjvfln]

So underrated Please keep making videos its so fun to watch Maths and how its implemented in games :) plus your voice is so relaxing <3

[SeanFrancisNBallais]

Almost two minutes in, and I knew this would be fun to watch while learning.

[juliuswaldmann]

I was also brought here by the algorithm. Normally I am not really the "comment writing person" but I have to say that this video was really well-made, and I had to complement you. I wish you the best of luck going forward.

You've gained a new subscriber today :)

[Ray]

Subscribed! This video gave me the right kind of A level maths flashbacks

[_Egg]

wait what. i thought i was watching a huge youtuber until I heard at the end you were a small one. huh. great job

[brianwaltse]

I may be wrong, but I believe the arc length formula given is incorrect?

Should be s=r*angle, or s=r* (angle/180) for degrees?

π * 1 = π so I'll remove it for the unit circle, but as an example, let's try solving for an arc length for the half circle. That could be represented as 180°, 0.5, or π.

π*π = 2π
π*180 = 180π (or 2π if we convert)
π*½ = ½π

The correct answer is a length of π of course. Or, alternatively, 180.

I may be misunderstanding though.

[Preview]

I tried. I really tried.... but my brain doesn't math. I remain mathless and trig-poor.

[theveryloosegoose]

Love the video, but one thing has me confused at about 7:20 in the video; what do you mean by using the signs(sines?) of x and y to find Theta? Every way I've thonked about it, I can't figure out how.

[streamdx]

I think you can convert shoot direction vector to a unit vector(vector of length 1) then you don’t have to use sin and cos in order to achieve same bullet speed in all directions.
Or may be i don’t get your idea… it is also might be computationally cheaper to normalize vector once instead of calling relatively expensive sin() and cos()

[therealaleki]

Wow, this is a very good quality video

[macronomicus]

Those macaroons look great! And, wow you're extremely better at math than I am 😳if it weren't for widely available reference materials & tutorials like this, node-"coding", & code libraries, I think the math stuff would be way out for me, i've spent so little time learning maths except on an as needed or curiosity basis. The way I learn I'd have to dive deep for a long time to get math properly embedded, & mastered would take many years of course. Thats why Ive always been more the type that eyeballs things & tinkers until it feels right. 😜

[TheBunzinator]

Technical point, but I believe they are macarons, not macaroons. Macaroons are larger soft coconut cookies without filling.

[YmanYoutube]

Wouldn't it be easier to use Vector math for the single shot instead of Trig? Just get the direction vector (mouse pos - player pos) normalized and then multiply that vector by your speed value.

[arsnakehert]

Would've been pretty funny if at the point where you're typing "circumference" you had typed "circumci..." and then corrected yourself :D