# ELAS

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ELAS is a CAOS command used to set or output how 'bouncy' an agent is.

## Usage

Syntax: ELAS elasticity(int)

Sets the elasticity of TARG as a percentage. After bouncing, the agent's new upward speed will be elasticity percent of the downwards speed with which it hit the ground.

Syntax: ELAS

Returns the elasticity of TARG as an integer percentage.

## Examples

ELAS being used in the command line to make HOTS bounce perfectly:

TARG HOTS ELAS 100


Being used in the command line to output the ELAS of HOTS:

TARG HOTS OUTV ELAS


## Equivalent in the real world

ELAS is equivalent, in a simple mechanical model, to Newton's coefficient of restitution, e, between the ground and the agent, where $e = \frac{\mbox{speed of separation}}{\mbox{speed of approach}}$. $0 \le e \le 1$, and e is 1 for perfectly elastic collisions (no loss of kinetic energy) and 0 for perfectly inelastic ones (the objects coalesce).