Bouncing Ball?

Übersicht

BlitzBasic

Beginners-Corner

	raynesa Betreff: Bouncing Ball?	Fr, Sep 30, 2011 14:02 Antworten mit Zitat
Hi there, I am trying to create an animation of a ball which goes in a random direction and bounces of the edge of each screen. So far I have been able to use the LoadImage function along with keyboard inputs to have the image move around the screen and stop at the wall boundaries. I am unsure as how to assign a random velocity and direction to the ball so it moves automatically and then rebounds in another direction once it hits a wall. Any help would be greatly appreciated. Cheers

raynesa

Betreff: Bouncing Ball?

Fr, Sep 30, 2011 14:02
Antworten mit Zitat

Hi there,

I am trying to create an animation of a ball which goes in a random direction and bounces of the edge of each screen.

So far I have been able to use the LoadImage function along with keyboard inputs to have the image move around the screen and stop at the wall boundaries.

I am unsure as how to assign a random velocity and direction to the ball so it moves automatically and then rebounds in another direction once it hits a wall.

Any help would be greatly appreciated.

Cheers

	Xeres Moderator	Fr, Sep 30, 2011 14:16 Antworten mit Zitat
May i ask why you use a german forum instead of the official website? As for your problem: please post a short version of your code, so we can get you a hint. You probably need Rand, Sin, Cos.
Win10 Prof.(x64)/Ubuntu 16.04\|CPU 4x3Ghz (Intel i5-4590S)\|RAM 8 GB\|GeForce GTX 960 Wie man Fragen richtig stellt \|\| "Es geht nicht" \|\| Video-Tutorial: Sinus & Cosinus THERE IS NO FAIR. THERE IS NO JUSTICE. THERE IS JUST ME. (Death, Discworld)

Xeres

Moderator

Fr, Sep 30, 2011 14:16
Antworten mit Zitat

May i ask why you use a german forum instead of the official website?
As for your problem: please post a short version of your code, so we can get you a hint. You probably need Rand

, Sin

, Cos

Win10 Prof.(x64)/Ubuntu 16.04|CPU 4x3Ghz (Intel i5-4590S)|RAM 8 GB|GeForce GTX 960
Wie man Fragen richtig stellt || "Es geht nicht" || Video-Tutorial: Sinus & Cosinus
THERE IS NO FAIR. THERE IS NO JUSTICE. THERE IS JUST ME. (Death, Discworld)

	das wurgel	Fr, Sep 30, 2011 15:31 Antworten mit Zitat
It's probably easier to use a vector instead an angle for the direction. Just multiplikate the vector with the velocity, add it to the position and redraw the ball. Code: [AUSKLAPPEN] [EINKLAPPEN] Repeat ballx = ballx + directionx * velocity bally = bally + directiony * velocity Draw the ball on it's position Until You need to use a normal vector for the direction. If the ball rebounds on a vertical edge you negate directionx, on a horizontal edge you negate directiony.
1 ist ungefähr 3

das wurgel

Fr, Sep 30, 2011 15:31
Antworten mit Zitat

It's probably easier to use a vector instead an angle for the direction. Just multiplikate the vector with the velocity, add it to the position and redraw the ball.

Code: [AUSKLAPPEN]

Repeat
ballx = ballx + directionx * velocity
bally = bally + directiony * velocity
Draw the ball on it's position
Until

You need to use a normal vector for the direction.

If the ball rebounds on a vertical edge you negate directionx, on a horizontal edge you negate directiony.

1 ist ungefähr 3