# Obstacles Symbols Symbols for accessing obstacles model and collision detection. The formalized behavior references a variety of input and output symbols, which can stand for variables or functions of the agent's software. Constants are constant decimal values. ## Input Symbols
Name | Type | Measure | Description
obstacles.collision-front-left | boolean | true/ false | The collision at the front left leg
obstacles.collision-front-right | boolean | true/ false | The collision at the front right leg
obstacles.collision-hind-left | boolean | true/ false | The collision at the hind left leg
obstacles.collision-hind-right | boolean | true/ false | The collision at the hind right leg
obstacles.collision-head | boolean | true/ false | The collision at the head
obstacles.collision-aggregate | boolean | true/ false | The collision at all detector
obstacles.consecutive-collision-time-front-left | decimal |  | The consecutive collision time at the front left leg
obstacles.consecutive-collision-time-front-right | decimal |  | The consecutive collision time at the front right leg
obstacles.consecutive-collision-time-hind-left | decimal |  | The consecutive collision time at the hind left leg
obstacles.consecutive-collision-time-hind-right | decimal |  | The consecutive collision time at the hind right leg
obstacles.consecutive-collision-time-head | decimal |  | The consecutive collision time at the head
obstacles.consecutive-collision-time-aggregate | decimal |  | The consecutive collision time at all detector
obstacles.min-distance-left | decimal | mm | Min distance left
obstacles.min-distance-right | decimal | mm | Min distance right
obstacles.min-distance-middle | decimal | mm | Min distance middle
obstacles.collision-side | enumerated | middle left right | The side on which a collision occured
obstacles.robot-is-stuck | boolean | true/ false | Indicates if the robot is stuck (based on obstacles model)
obstacles.close | boolean | true/ false | There are obstacles that are close
obstacles.opponents-close-to-ball | boolean | true/ false | There are opponents in the direction of the ball
obstacles.obstacle-front | boolean | true/ false |
obstacles.obstacle-front-left | decimal |  |
obstacles.obstacle-front-right | decimal |  |