Marauroa Core API: Difference between revisions

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Marauroa exposes a very simplified and reduced API so you can easily develop your own games. A nightly build [http://stendhal.game-host.org/hudson/job/marauroa_HEAD/javadoc/ JavaDoc API Documentation] is available, too.
Marauroa exposes a very simplified and reduced API so you can easily develop your own games. A nightly build [http://stendhalgame.org/hudson/job/marauroa_HEAD/javadoc/ JavaDoc API Documentation] is available, too.


== Content ==
== Content ==
[[Image:Classdiagram_marauroa.common.game_rp_stubs.png|thumb|Class Diagram of RP* classes]]

The main entities you should know about are:
The main entities you should know about are:
* Attributes
* Attributes
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== RPObject and RPSlot ==
== RPObject and RPSlot ==
RPObjects are the containters of data in Arianne. An RPObject is an (''isa'' function) Attributes element with a list of RPSlots attached. <br>
RPObjects are the containters of data in Arianne. An RPObject is an Attributes element with a list of RPSlots attached.

RPSlots are slots on objects that items can be placed on/in, such as backpacks, pockets, boxes, ...<br>
RPSlots are slots owned by an RPObject into which other RPObjects can be placed (like items in a backpack)

The methods of the RPObject to modify slots are:
The methods of the RPObject to modify slots are:
<source lang="java">
* ''void addSlot(RPSlot slot)''
public void addSlot(RPSlot slot)
* ''RPSlot getSlot(String name)''
* ''void removeSlot(String name)''
public RPSlot getSlot(String name)
* ''boolean hasSlot(String name)''
public void removeSlot(String name)
public boolean hasSlot(String name)
* ''Iterator slotIterator()''
public Iterator slotIterator()
</source>
The above methods are used to add a slot to the object, retrieve it, remove it and test if the slot exists. Finally the slot iterator is used to visit all the slots in the object.
The above methods are used to add a slot to the object, retrieve it, remove it and test if the slot exists. Finally the slot iterator is used to visit all the slots in the object.


<source lang="java">
* ''RPObject.ID getID()''
public RPObject.ID getID()
</source>
This is a helper method to get the unique ID of the object.
This is a helper method to get the unique ID of the object.


RPSlot class elements also have a simple API:
RPSlot has a simple API:
<source lang="java">
* void add(RPObject object)
* RPObject get(RPObject.ID id)
public void add(RPObject object)
* boolean has(RPObject.ID id)
public RPObject get(RPObject.ID id)
* RPObject remove(RPObject.ID id)
public boolean has(RPObject.ID id)
public RPObject remove(RPObject.ID id)
* void clear()
public void clear()
⚫
These methods modify objects in the RPSlot.
</source>
The clear() method removes all the objects in the slot.


⚫
These methods modify objects in the RPSlot. The clear() method removes all the objects in the slot.
⚫
* Iterator iterator()

<source lang="java">
⚫
public Iterator iterator()
</source>


It is used to visit all the objects of the slot.
It is used to visit all the objects of the slot.


<source lang="java">
<pre>
RPObject object=new RPObject(RPClass.getRPClass("player"));
// create an object of RPClass player and set some attribute values
object.put("name","example");
RPObject object = new RPObject("player");
object.put("score",0);
object.put("name", "example");
⚫
object.put("score", 0);


RPSlot slot=new RPSlot("backpack");
// create a slot called backpack
RPObject coin=new RPObject();
RPSlot slot = new RPSlot("backpack");
⚫
coin.put("type","coin");
⚫
slot.add(coin);
object.addSlot(slot);
object.addSlot(slot);

</pre>
// create an object of RPClass "coin" and put it into the slot
RPObject coin = new RPObject("coin");
⚫
slot.add(coin);
</source>


Now for the complex part. Where it all becomes a little nuts!: IRPZone and IRPRuleProcessor interfaces
Now for the complex part. Where it all becomes a little nuts!: IRPZone and IRPRuleProcessor interfaces


=RPWorld=
==RPWorld==
This class is just a container of zones.
This class is just a container of zones.


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onInit and onFinish are called on server startup and finalization. You need to subclass RPWorld to give proper behaviour to them.
onInit and onFinish are called on server startup and finalization. You need to subclass RPWorld to give proper behaviour to them.


<source lang="java">
⚫
public void onInit() throws Exception
public void onFinish() throws Exception
public void onInit() throws Exception
⚫
public void onFinish() throws Exception
</source>


Some helper methods to add zones and iterate them.
Some helper methods to add zones and iterate them.


<source lang="java">
public void addRPZone(IRPZone zone)
public IRPZone getRPZone(IRPZone.ID zoneid)
public void addRPZone(IRPZone zone)
public IRPZone getRPZone(RPObject.ID objectid)
public IRPZone getRPZone(IRPZone.ID zoneid)
public Iterator<IRPZone> iterator()
public IRPZone getRPZone(RPObject.ID objectid)
public int size()
public Iterator<IRPZone> iterator()
public int size()
</source>


Methods to add,get,test existence, remove and modify objects.
Methods to add, get, test existence, remove and modify objects. modify() is as you know for delta^2 algorithm.
Modify is as you know for delta^2 algorithm.


<source lang="java">
⚫
public void add(RPObject object) throws NoRPZoneException, RPObjectInvalidException
public RPObject get(RPObject.ID id) throws NoRPZoneException, RPObjectInvalidException
public void add(RPObject object) throws NoRPZoneException, RPObjectInvalidException
public boolean has(RPObject.ID id) throws NoRPZoneException, RPObjectInvalidException
public RPObject get(RPObject.ID id) throws NoRPZoneException, RPObjectInvalidException
public RPObject remove(RPObject.ID id) throws NoRPZoneException, RPObjectNotFoundException
public boolean has(RPObject.ID id) throws NoRPZoneException, RPObjectInvalidException
public void modify(RPObject object) throws NoRPZoneException
public RPObject remove(RPObject.ID id) throws NoRPZoneException, RPObjectNotFoundException
⚫
public void modify(RPObject object) throws NoRPZoneException
</source>


These are helper methods for changing the zone of an object. Use them instead of doing it by hand.
These are helper methods for changing the zone of an object. Use them instead of doing it by hand.


<source lang="java">
⚫
public void changeZone(IRPZone.ID oldzoneid, IRPZone.ID newzoneid, RPObject object) throws NoRPZoneException
public void changeZone(String oldzone, String newzone, RPObject object) throws NoRPZoneException
public void changeZone(IRPZone.ID oldzoneid, IRPZone.ID newzoneid, RPObject object) throws NoRPZoneException
⚫
public void changeZone(String oldzone, String newzone, RPObject object) throws NoRPZoneException
</source>

⚫
==IRPZone==
⚫
IRPZone is the interface that handles the world content and the perceptions. In most cases you should use the implementation MarauroaRPZone and extend it.


⚫
=IRPZone=
⚫
IRPZone is the class that handles the world content and the perceptions. It would be wise to forget about it, or extend MarauroaRPZone instead as it's a complex and error prone class. <br>
The methods are:
The methods are:
<source lang="java">
<pre>
/** This method is called when the zone is created to populate it */
/** This method is called when the zone is created to populate it */
public void onInit() throws Exception;
public void onInit() throws Exception;

/** This method is called when the server finish to save the content of the zone */
/** This method is called when the server finish to save the content of the zone */
public void onFinish() throws Exception;
public void onFinish() throws Exception;
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/** This method adds an object to the Zone */
/** This method adds an object to the Zone */
public void add(RPObject object) throws RPObjectInvalidException;
public void add(RPObject object) throws RPObjectInvalidException;

/** This method tag an object of the Zone as modified */
/** This method tag an object of the Zone as modified */
public void modify(RPObject object) throws RPObjectInvalidException;
public void modify(RPObject object) throws RPObjectInvalidException;

/** This method removed an object of the Zone and return it.*/
/** This method removed an object of the Zone and return it.*/
public RPObject remove(RPObject.ID id) throws RPObjectNotFoundException;
public RPObject remove(RPObject.ID id) throws RPObjectNotFoundException;

/** This method returns an object of the Zone */
/** This method returns an object of the Zone */
public RPObject get(RPObject.ID id) throws RPObjectNotFoundException;
public RPObject get(RPObject.ID id) throws RPObjectNotFoundException;

/** This method returns true if the object exists in the Zone */
/** This method returns true if the object exists in the Zone */
public boolean has(RPObject.ID id);
public boolean has(RPObject.ID id);
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/** Iterates over the elements of the zone */
/** Iterates over the elements of the zone */
public Iterator iterator();
public Iterator iterator();

/** Returns the number of elements of the zone */
/** Returns the number of elements of the zone */
public long size();
public long size();
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/** This method return the perception of a zone for a player */
/** This method return the perception of a zone for a player */
public Perception getPerception(RPObject.ID id, byte type);
public Perception getPerception(RPObject.ID id, byte type);

/** This method is called to take zone to the next turn */
/** This method is called to take zone to the next turn */
public void nextTurn();
public void nextTurn();

/** Method to create the map to send to player's client */
/** Method to create the map to send to player's client */
public java.util.List buildMapObjectsList(RPObject.ID id);
public java.util.List buildMapObjectsList(RPObject.ID id);
</pre>
</source>


In most of the cases all you will wish to modify are:
In most of the cases all you will wish to modify are:
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* buildMapObjectsList
* buildMapObjectsList


⚫
==IRPRuleProcessor==

⚫
This class must be implemented fully, but it is a childs toy compared to IRPZone :). This is where you code all your games rules.<br>
⚫
=IRPRuleProcessor=
⚫
This class *MUST* be implemented fully, but it is a childs toy compared to IRPZone :). This is where you code all your games rules.<br>
The API is as follows:
The API is as follows:
<source lang="java">
<pre>
/** Set the context where the actions are executed.
/** Set the context where the actions are executed.
* @param zone The zone where actions happens. */
* @param zone The zone where actions happens. */
public void setContext(IRPZone zone);
public void setContext(IRPZone zone);

/** Pass the whole list of actions so that it can approve or deny the actions in it.
/** Pass the whole list of actions so that it can approve or deny the actions in it.
* @param id the id of the object owner of the actions.
* @param id the id of the object owner of the actions.
* @param actionList the list of actions that the player wants to execute. */
* @param actionList the list of actions that the player wants to execute. */
public void approvedActions(RPObject.ID id, RPActionList actionList);
public void approvedActions(RPObject.ID id, RPActionList actionList);

/** Execute an action in the name of a player.
/** Execute an action in the name of a player.
* @param id the id of the object owner of the actions.
* @param id the id of the object owner of the actions.
Line 287: Line 319:
* refer to Actions Explained for more info. */
* refer to Actions Explained for more info. */
public RPAction.Status execute(RPObject.ID id, RPAction action);
public RPAction.Status execute(RPObject.ID id, RPAction action);

/** Notify it when a new turn happens */
/** Notify it when a new turn happens */
public void nextTurn();
public void nextTurn();

/** Callback method called when a new player enters in the game
/** Callback method called when a new player enters in the game
* @param object the new player that enters in the game. */
* @param object the new player that enters in the game. */
public boolean onInit(RPObject object) throws RPObjectInvalidException;
public boolean onInit(RPObject object) throws RPObjectInvalidException;

/** Callback method called when a new player exits the game
/** Callback method called when a new player exits the game
* @param id the new player id that exits the game.
* @param id the new player id that exits the game.
* @return true to update the player on database. */
* @return true to update the player on database. */
public boolean onExit(RPObject.ID id) throws RPObjectNotFoundException;
public boolean onExit(RPObject.ID id) throws RPObjectNotFoundException;

/** Callback method called when a new player time out
/** Callback method called when a new player time out
* @param id the new player id that timeouts. */
* @param id the new player id that timeouts. */
public boolean onTimeout(RPObject.ID id) throws RPObjectNotFoundException;
public boolean onTimeout(RPObject.ID id) throws RPObjectNotFoundException;
</pre>
</source>


[[Category:Marauroa]]
[[Category:Marauroa]]
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