In the previous sub-topic (the available actions), the conditions in actions were bypassed. In fact, every action can have a condition that controls whether the ActionManager executes the action or not. The conditions can check whether a value is one of the following states compared to another value:
- Equal
- Lesser
- Greater
- Different
There are three types of condition, as follows:
-
State condition: This checks whether the
.stateproperty ofBABYLON.Nodeis equal to the given state. A state is a string. - Value condition: This checks whether a property is equal, lesser, greater, or different from a given value.
- Predicate condition: This calls a custom method that will return
trueorfalse.
If an action has a condition, the action will be executed only if the condition returns true.
Adding conditions to your actions graph shows all the power of the Actions Builder, which comes in the next topic. To understand the following example, before practicing with conditions...