Using gravity with YAxisForward

General
1
  • A* version: 5.3.8
  • Unity version: 6.2

My game is a top-down game (think Hotline Miami) which blends 2D and 3D. My movement plane is XY like most 2D games but I have z-depth as well. In my case gravity is set to 0,0,50 (i.e. gravity is on the z-axis).

I am using entityfollowers and would like to use the built-in gravity feature but this is hidden in the inspector if orientation is set to YaxisForward. I tried using a script to enable gravity on Start() but that didn’t seem to have any effect. Is it possible to use gravity with this setup? If not, what alternative do I have? I do have kinematic rigidbodies on my AI - should I make them dynamic and enable gravity that way? I’d hesitate to do this as I wouldn’t want to fight w/ A*s built in systems.

2

Hi

I would recommend using ZAxisForward, but rotate the agent in 3D space so that it is like looking down on a normal 3D character.

The FollowerEntity’s gravity will always be applied in its local down direction. But it is hardcoded to use Physics.gravity.y as the value for that, I’m afraid.

3

Hey Aron, so it sounds like no matter what the gravity will be implemented in the y-axis alone? Any chance to get making that more flexible added to the feature list :-).

4

Gravity will always be in the down direction of the agent (it’s local Y axis). So if you rotate the agent, gravity so that its local Y axis is along the Z axis, then gravity will work in the Z axis. It will always take the gravity value from Physics.gravity.y, though.