A brush entity which creates bubbles at random positions inside it, which float up regardless of whether being in water or air and only are removed when hitting a water surface or solid wall. The bubbles' sizes and rising-speed will vary slightly randomly.
"Bubble Density", density :
The amount of bubbles to create per interval.
"Bubble Frequency", frequency :
How often the amount of bubbles set by 'Density' shall be created per second. Maximum is 20.
"Speed of current", current :
Sets the horizontal movement speed of the bubbles, to simulate them being in a current. The direction is set by the env_bubble's yaw. You cannot make the bubbles move downwards by trying to rotate the entity upside down.
 
1: "Start off": The env_bubbles entity will start off.
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