|
|
| (12 intermediate revisions by one other user not shown) |
| Line 1: |
Line 1: |
| − | The bonus system of VCMI is a set of mechanisms that make handling of different bonuses for heroes, towns, players and units easier. The system consists of a set of nodes representing objects that can be a source or a subject of a bonus and two directed acyclic graphs (DAGs) representing inheritance and propagation of bonuses. Core of bonus system is defined in HeroBonus.h file.
| + | {{Template:MovedToWebpage|https://vcmi.eu/developers/Bonus_System/}} |
| − | | |
| − | Here is a brief sketch of the system (black arrows indicate the direction of inheritance and red arrows the direction of propagation):
| |
| − | | |
| − | [[File:Bonus system.png|center]]
| |
| − | | |
| − | | |
| − | == Propagation and inheritance ==
| |
| − | | |
| − | Assuming the graph of bonus system is temporarily not changing, the bonuses are propagated as follows:
| |
| − | # We take all bonuses by precedence in red DAG (more accurate description is not yet specified) and using their propagators we apply them to appropriate red children. Propagators default to none.
| |
| − | # We take all bonuses by precedence in black DAG (more accurate description to be specified) and apply them to all black children with respect to limiters. A limiter can specify that inheritance should be stopped at a certain node, default is to propagate to all black children.
| |
| − | | |
| − | == Operations on the graph ==
| |
| − | | |
| − | There are two basic types of operations that can be performed on the graph:
| |
| − | | |
| − | === Adding a new node ===
| |
| − | | |
| − | When node is attached to a new black parent <ref>the only possibility -> adding parent is the same as adding a child to it</ref>, the propagation system is triggered and works as follows:
| |
| − | : For the attached node and its all red ancestors
| |
| − | :: For every bonus
| |
| − | ::: Call propagator giving the new descendant -> then attach appropriately bonuses to the red descendant of attached node (or the node itself).
| |
| − | | |
| − | === Deleting an existing node ===
| |
| − | | |
| − | Analogically to the adding a new node, just remove propagated bonuses instead of adding them. Then update the hierarchy.
| |
| − | | |
| − | == Limiters ==
| |
| − | | |
| − | == Propagators ==
| |
| − | | |
| − | == Calculating the total value of a bonus ==
| |
| − | | |
| − | *[[List of bonus value types]]
| |
| − | | |
| − | {{Bonuses}}
| |
| − | | |
| − | == Automatic generation of bonus description ==
| |
| − | | |
| − | TBD
| |
| − | | |
| − | =Notes=
| |
| − | <references/>
| |
