nezvers

Springs             - can be used as trap to throw at spike.
Dissapearing block  - block that dissapears after landing on it or oscilates over time.
Abyss/ lava         - mario abyss or static "floor is lava".
Air fan             - constant speed added to the player (horizontal, vertical).
Spikes              - visible and trap like.
Saw blades          - static and moving.
Falling stuff       - falling rocks or thing when player is under it.
Moving floor        - factory assembly line floor.
Air current         - lifting player up to certain height.
Raising lava        - climbing floor of lava.

nezvers

//Collection of all possible enemies to make easier on designing enemies
//Open for suggestions for entries or categories
walker
  critter - just walking
  Proximity runner
    X proximity     - ex: NES Batman 1st stage
    Y proximity
  guardian          - object or position
  patrolling
  chaser