From Creatures Wikia
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.
Returns the elasticity of TARG as an integer percentage.
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 . , and e is 1 for perfectly elastic collisions (no loss of kinetic energy) and 0 for perfectly inelastic ones (the objects coalesce).