Pls help (10 c)

#1

I’m making a game but I cant Macke a wall

#2

could you perhaps provide slightly more info as to what you are doing? it’d be really helpful to determine how we can help you make a wall of any sort.

#3

like, are you making a platformer? car game? is there gravity?

#4

Easy:

// wall default script
if(!project.walls)
  project.walls = Object.create(null);

project.walls[this.uuid] = this;

// player update script
const lastX = this.x, lastY = this.y;

// movement...

const touchingAnything = Object.values(project.walls).filter(c => this.hits(c)).reduce((acc, cur) => cur || acc);

if(touchingAnything) {
  this.x = lastX;
  this.y = lastY;

This code does:

  1. Save the last ‘good’ position
  2. Movement code (you know how to do that)
  3. Calculate if touching anything
  4. If actually touching anything, revert to last ‘good’ position
#5

what??? :sob: @noobfield really is a wizard, i didnt even know that was possible…

#6

The object created in the wall script was a Object.create(null). In a nutshell, it just prevents default methods included with the Object prototype (prototypes are weird)

The array sequence is simple:

  1. Get an array with project.walls's values (Object.values(project.walls))

  2. Make a new array with the values ran through a function, which in this case does a this.hits(that) (.map(clip => this.hits(clip))) I misspelled it as .filter in the post, filter will only include values which the function returns true

  3. Reduce the array of boolean values into a single boolean value (.reduce((reducing, current) => current || reducing) .reduce is really weird but also really good

#7

thanks soo much! now my game works

#8

I promise I don’t know the movement part I was first starting whith the gravity and stuff pls heeelllp

villager face
villager face499×613 22.6 KB

#9

for movement? what kind of movement fo you need? for really simple movement, without gravity, just copy the code from the builtin asset. you can also use

  if(isKeyDown("left")) {
        this.vx -= this.speed;
    }
    if(isKeyDown("right")) {
        this.vx += this.speed;
    }
    if(isKeyDown("up")) {
        this.vy -= this.speed;
    }
    if(isKeyDown("down")) {
        this.vy += this.speed;
    }
    //movement 
    this.x += this.vx;
    this.y += this.vy;
    this.vx *= 0.96;
    this.vy *= 0.96;

initialize vx and vy to zero, and speed to whatever. i used 0.4. this makes for really smooth, satisfying motion. if there’s gravity, use a vx and vy system where you change vy each tick to make you fall, and set the vy to a negative integer to jump. then change vx to move horizontally. i hope this helps!

#10

Also remember to Math.min(this.vx, this.maxSpeed), or you’ll keep going faster and faster and faster… BIG RIGS: Over The Road Racing has this problem, the speed at which you go back isn’t capped but is for going forward.

#11

thanks, really

#12

oh, i didnt know you could do that… i just did

if(this.vy <= this.whatever) {
[movement code here]
}