Only jump when character is on the ground

EsterZ · October 22, 2018, 2:25pm

Hello,

I tried to add jumping in the first person controller with applyImpulse and it worked but it can also jump when its not on the ground so if you press space very fast you can go as high as you want. Is there some sort of line with wait or that you can only jump when your character is on the ground?

My project:
https://playcanvas.com/editor/scene/646173

The script i use is FirstPersonMovement

Thanks!

DevilZ · October 22, 2018, 2:34pm

I am not sure if this would work, but you could try doing an if statement to check if the character has reached a certain height. If it has not, then let it jump, otherwise you can keep it on the ground.

Something like -


if (this.entity.getPosition().y < //maximum height) 
     {//jump}

EsterZ · October 22, 2018, 2:39pm

I tried it and it worked! thanks a lot!!

DevilZ · October 22, 2018, 3:11pm

You’re welcome. @EsterZ, can you make a basic space shooter game for my project? It’s pretty urgent and I need to find a team member, since I need to work on something else. I will give all due credit to you. Please let me know if you are interested.

EsterZ · October 22, 2018, 3:23pm

No sorry i dont really have time for that im working in playcanvas for school and it needs to be finished within 2 weeks and there is al lot to do.

DevilZ · October 22, 2018, 3:48pm

That’s OK, just wanted to know

kungfooman · October 23, 2018, 2:49am

Using pos.y for “can jump detection” prevents you from making any kind of nice vertical maps. The height difference in maps is often what makes them attractive, in e.g. FPS shooters. Climbing up the ladders, jump over gaps, walking downhill etc.

I am using this script:

github.com

playcanvas/playcanvas-gltf/blob/master/editor/src/first-person-movement.js

var FirstPersonMovement = pc.createScript('firstPersonMovement');

// optional, assign a camera entity, otherwise one is created
FirstPersonMovement.attributes.add('camera', {
    type: 'entity'
});

FirstPersonMovement.attributes.add('power', {
    type: 'number',
    default: 2500
});

FirstPersonMovement.attributes.add('lookSpeed', {
    type: 'number',
    default: 360 / screen.width // move cursor from left to right on your screen == 1 rotation ingame
});

// initialize code called once per entity
FirstPersonMovement.prototype.initialize = function() {
    this.camera       = null;

This file has been truncated. show original

Ground detection is based on Ammo.js Capsule collision and you can only jump once every 500ms

It’s not perfect yet, but I think we need to collaborate more on “this kind of stuff should just work” essentials.

If you have any ideas or actual code to improve the script, just write here please

DevilZ · October 23, 2018, 4:14pm

You can probably look at @EsterZ 's code in the project. I suggested something earlier on in the thread and it seems to have worked for @EsterZ.