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//#ident "$Id: Behavior.h,v 1.7 2003/05/27 11:53:24 rzr Exp $"
/***************************************************************************
Behavior.h - description
-------------------
begin : Wed Jan 26 2000
copyright : (C) 2000 by Henrik Enqvist GPL
email : henqvist@excite.com
***************************************************************************/
#ifndef BEHAVIOR_H
#define BEHAVIOR_H
#include "EMath.h"
class Group;
class Light;
/** You add behavior to your objects by creating a subclass to
* the Behavior class and adding it to a group. All your AI-code,
* keyboard-logic should be in a behavior object (or be called from).
* Important! On each engine tick the 'onTick' function is called first,
* then the eventual 'onCollision' functions are called. And at last
* the signals in the signal queue is sent to the 'onSignal' function.
* Remember the order in which these functions are called when you debug
* your behaviors. */
class Behavior {
public:
/** Simple constructor. You are supposed to create subclasses
* and add the subclasses to the group. */
Behavior();
virtual ~Behavior() {}
/** reset (needed for static libs) */
virtual void clear() { m_iType = 0; }
/** Override this method to create behavior that occurs on each render loop. */
virtual void onTick() = 0;
/** Override this method to create behavior that occurs on a collision.
* @see Shape3D
* @see CollisionBounds */
virtual void onCollision(const Vertex3D & vtxWall, const Vertex3D & vtxOwn, Group * g) = 0;
/** Called each time a signal i sent through the system.
* Override this method to create behavior that occurs on a signal. */
virtual void onSignal(int signal, Group * sender) = 0;
/** Adds a light for subclasses to use. The light must before be added to a group.
* and to the engine. */
inline void setLight(Light * l) { p_Light = l; };
/** Returns to light added the behavior. Returns NULL if no light added. */
inline Light * getLight() { return p_Light; };
/** Gets the user defined type for this behavior. Subclasses should set
* type to a unique id. Defaults to 0. */
inline int getType() { return m_iType; };
/** Gets the parent group for this behavior. The behavior must be added to
* a group before we can use this. */
inline Group * getParent() { return p_Parent; };
protected:
/** Subclasses uses this funcition to set the behavior type. */
inline void setType(int t) { m_iType = t; };
private:
friend class Group;
/** Only for internal use. The Group class uses this when a
* behavior is added to the group. */
inline void setParent(Group * g) { p_Parent = g; };
Light * p_Light;
Group * p_Parent;
int m_iType;
};
#endif // BEHAVIOR_H
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