file Tutorial: Gravity Point Triggers

  • HiGuy
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11 Nov 2015 20:09 - 11 Nov 2015 20:17 #1 by HiGuy
Tutorial: Gravity Point Triggers was created by HiGuy
MBP 1.60 added some new triggers from PQ, but I don't believe they're documented anywhere. I'll be making a few guides in the near future on how to use them; let's start with the easiest trigger: the Gravity Point Trigger.

GravityPointTriggers create spherical gravity. If you play "Sphere Plates" (in MultiPlayer / Hunt / Custom) you can get a basic idea of this effect. For this tutorial I will be using this simple Sphere and Ring map:


GravityPointTriggers can be found in the level editor, under Mission Objects -> Mission -> Trigger. Make sure you have the right datablock.




Inside/Inverted Gravity Triggers

After sizing your trigger to fit, play with the values. Here are the values I used:
  • Since this first trigger will provide inverted spherical gravity (i.e. you roll on the inside of the sphere, rather than the outside), I set invert to 1.
  • Additionally, I know that the center of my sphere is (0, 0, 5), so I set customPoint to 0 0 5 to ensure that we orbit the correct point.
  • I know the radius of my sphere is 5 units, so I set RadiusSize to 5 and useRadius to 1. If you only have one global trigger, you can skip this.
[img]http://i.imgur.com/K4kz1cD.jpg/img] Now that I've finished customizing your trigger, all that's left is to save and reload the mission. And look, I'm on the inside of a sphere! [img]http://i.imgur.com/wHyBfxu.jpg



Normal/Outside Gravity Triggers

I created another GravityPointTrigger for this map in exactly the same way as I made the previous one. There are a few differences in the options I use, though:
  • Since this trigger will be for the outside, I leave invert at 0.
  • Additionally, I know that the center of my sphere is (0, 0, 5), so I set customPoint to 0 0 5 to ensure that we orbit the correct point.
  • I want players to be able to jump out of the gravity region and onto the platform. To enable them to leave its field, I set UpDownLeave to 1 and useRadius to 1. If a player leaves the radius of the trigger with this enabled, their gravity will automatically snap to either straight up or down depending on which side they're closer to. You can skip this step if you don't want them to be able to leave your sphere's gravity.
  • I know the radius of my sphere is 5 units and I want to have 3 units of extra space around the sphere so players won't fly off if they jump, so I set RadiusSize to 8.


Now I just need to save and reload the mission. And here we have a fully working sphere:


And if I jump off and land on the platform, my gravity resets automatically. Neat!


That's just one of the triggers that we added in MBP 1.60. I'll make more guides soon for using the rest. Let me know if you have any questions about what the triggers can or cannot do.

If you want to download the level shown in this post, you can find it here .

PQ in a nutshell
function clientcmd12dothepq() {
    commandToClient(LocalClientConnection, '34onthedancefloor');
}
Last edit: 11 Nov 2015 20:17 by HiGuy.
The following user(s) said Thank You: Jeff, Kalle29, Technostar, Weather, Evoker

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  • Technostar
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11 Nov 2015 23:18 #2 by Technostar
Replied by Technostar on topic Tutorial: Gravity Point Triggers
Great tutorial! This will be really useful for new levels, but I would recommend to level builders that you don't have too many orbital challenges using this, as levels like that can be long and challenging (Orbital, for instance).

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