Make a movable object (player) turn to face where the mouse is

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Make a movable object (player) turn to face where the mouse is

in Programming Questions • 2 years ago

Hi everyone, I am fairly new at Processing, and java, so I hope some of you can help!

I'm making a shooter game with a movable player. However I am stuck on how to make him face where the mouse is, so that I can then code him to shoot in that direction. Hopefully that's clear for you guys?

Here is what I have at the moment*:

void setup() {

size(200,200);

smooth();

}

void draw() {

background(255);

rectMode(CENTER);

fill(0);

rect(50,50,20,50);

}

Although my real code for my game has classes, arrays etc, this is what I have done to make my problem as specific as possible - so my player is just a rectangle...

Hope one of you geniuses can help! :P

Replies(2)

Greger

Re: Make a movable object (player) turn to face where the mouse is

2 years ago

PVector playerpos = new PVector(100, 100);
void setup() {
size(200,200);
smooth();
}
void draw() {
background(255);
rectMode(CENTER);
fill(0);
translate(playerpos.x, playerpos.y);
rotate(atan2(mouseY-playerpos.y, mouseX-playerpos.x));
rect(0, 0, 20, 50);
}

You can read a tutorial about vectors , and also then read about polar coordinates and atan2

smiley_fa..

Re: Re: Make a movable object (player) turn to face where the mouse is

2 years ago

Cheers 'gregersn' that's helped a lot and I love this forum already as I only posted 10 minutes ago! :D

I'll check out those tutorials as I am so keen to keep learning!

Thanks again!

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