Difference between revisions of "Interruptible Actions"

Revision as of 11:35, 20 February 2011

Actions that can be interrupted before their effects on the game state have been completely taken place.

Just because players have performed, or started to perform, actions does not mean that they will affect the game state. Games that allow actions to be interrupted before they affect the game state, either partially or fully, have Interruptible Actions.

Examples

Fighting games such as the Tekken series allow players to block opponent's attacks, effectively making the attacks interruptible.

In RoboRally, players choose how their robots should move by deciding a sequence of programming cards. These are the actions the robot will perform, but since other robots' movement may push the robot around, the intended actions are interruptible.

Several actions in the Left 4 Dead series, e.g. healing other players or helping them up when they are hanging from a ledge, can be disturbed by attacks of the enemies in the game, the infected.

Using the pattern

In Real-Time Games, Interruptible Actions are either Extended Actions, so that the actions can interrupted before their effects takes place, or actions with Delayed Effects (e.g. some cases of Capture) so that other actions may nullify the effect of the action. In Turn-Based Games, special Turn Taking sequences may be necessary to describe in rules for how actions can be interrupted, even though these sequences are not-used for most turns. When the effects of the Interruptible Actions take so long time to materialize that they support Encouraged Return Visits, they force players into Risk/Reward calculations on how long they can stay away from the game.

Actions that cause Irreversible Events can be modulated with Interruptible Actions so that a period of time exists for agents to stop the action. This can provided Balancing Effects in games, e.g. fighting games where players can block attacks or interrupt Combos, so not only the actions available and how they are performed are important but also how one counters them.

In games with Negotiation, for example the Trading in Settlers of Catan, Interruptible Action allows several agents to simultaneously engage in the active but may cause Time Pressure.

Being able to interrupt an action can be a Privileged Ability. This is most common in card games but can also be found in situations where judges are used to modulate Negotiation. Depending on the game, it may be allowed to interrupt Storytelling and this can be used to make the story into a collaborative action.

Consequences

Interruptible Actions are Ephemeral Events in that they exist only until the action is completed, and they provide Ephemeral Goals in that they can be interrupted but only for a short time. As completing an Interruptible Action can be a goal in itself, all Interruptible Actions spawn Interferable Goals. When the Interruptible Actions only are so until their Development time has passed, this creates Time Limits for those trying to interrupt them. In a case where players have multiple Focus Loci, Interruptible Actions that are also Extended Actions may require players to perform Risk/Reward choices on how much Attention Swapping is necessary to ensure completion of the actions.

Relations

Can Instantiate

Attention Swapping, Ephemeral Events, Ephemeral Goals, Interferable Goals, Risk/Reward, Balancing Effects

with Development time

Time Limits

Can Modulate

Capture, Encouraged Return Visits, Extended Actions, Trading, Storytelling, Combos, Negotiation, Irreversible Events

Can Be Instantiated By

Delayed Effects, Turn Taking, Privileged Abilities

Can Be Modulated By

Delayed Effects

Possible Closure Effects

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Potentially Conflicting With

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History

An rewrite of the original pattern named Interruptible Actions in the book 'Patterns in Game Design' (Björk & Holopainen, 2004).

References

Björk, S. & Holopainen, J. (2004) Patterns in Game Design. Charles River Media. ISBN1-58450-354-8.