游戏事件编辑器初步分析与实现（2）

接下来就是构建事件类与事件管理器了：

先考虑一个事件如何进行归类，用到了虚函数与继承

构造好的事件类如下：

class Event{

bool EventController* evenController();

bool ConditionController* conditionController();

void ActionController* actionController();

void check(){

if(eventController->Fucntion())

if(conditionController->Function())

actionController->Function()

}

};

 

class EventController{

public:

virtual bool Function();

};

 

class ConditionController{

public:

virtual bool Function();

};

 

class ActionController{

public:

virtual void Function();

};

 

 

例如还是上面那个例子，我们既要分别去继承EventController,ConditionController和ActionController三个类：

class EventEnter:public EventController{

public:

Man m;

Region r;

virtual bool Function()

{

if(m in r)

return true;

return false;

}

};

class ConditionIs:public ConditionController{

public:

Man m;

Unit u;

virtual bool Function()

{

if(m==u.master)

return true;

return false;

}

};

class ActionAttack:public ActionController{

public:

Man &m;

Unit &u;

virtual void Action()

{

order u attack m;

}

};

以上变量都定义为了public，为了方便操作。

而事件管理器相当简单

class EventManager{

vector<Event> events;

public:

void checkEvents();

void addEvent();

...

};

完成了这些类之后就开始加入事件了。

具体请看下面代码：

#include <iostream> #include <Windows.h> #include <time.h> #include <vector> using namespace std; struct Man{ int pos; //位置 int ID; int HP; Man() { pos=0; ID=0; HP=100; } bool equals(Man p) { if(ID==p.ID) return true; return false; } }; struct Unit{ Man master; Man attacking; }; struct Region{ int rl,rr; }; class EventController{ public: virtual bool Function() { return 0; } }; class EventEnter:public EventController{ public: Man m; Region r; virtual bool Function() { if(r.rl<m.pos&&m.pos<r.rr) return true; return false; } }; struct ConditionController{ virtual bool Function(){ return 0; } }; struct ConditionIs:ConditionController{ Man m; Unit u; bool Function(){ if(m.equals(u.master)) return true; } }; struct ActionController{ virtual void Function() { } }; struct ActionAttack:ActionController{ Man *m; Unit *u; void Function() { } }; struct Event{ EventController* eventController; ConditionController* conditionController; ActionController* actionController; Event(EventController* e,ConditionController* c,ActionController* a) { eventController=e; conditionController=c; actionController=a; } void Check() { if(eventController->Function()) { cout << "A event happened" << endl; if(conditionController->Function()) { cout << "Conditon is enough" << endl; cout << "Action!" << endl; actionController->Function(); } else{ cout << "Condition is not enough" << endl; cout << "Nothing happened" << endl; } } } }; class EventManager{ vector<Event> Events; vector<Event>::iterator t; static EventManager* instance; EventManager() { } public: static EventManager* GetInstance() { if(instance==NULL) instance=new EventManager(); return instance; } void AddEvent(Event e) { Events.push_back(e); } void CheckEvents() { for(t=Events.begin();t!=Events.end();++t) { (*t).Check(); } } ~EventManager() { delete instance; } }; EventManager* EventManager::instance=NULL; int main() { Man m; Man p; Unit dog; Region r; dog.master=m; p.pos=5; //改动pos的值进行调试 p.ID=1; //改动ID的值进行调试 r.rl=3; r.rr=10; srand(time(0)); EventEnter eventEnter; eventEnter.m=p; eventEnter.r=r; ConditionIs conditionIs; conditionIs.m=p; conditionIs.u=dog; ActionAttack actionAttack; actionAttack.m=&m; actionAttack.u=&dog; Event e(&eventEnter,&conditionIs,&actionAttack); EventManager::GetInstance()->AddEvent(e); EventManager::GetInstance()->CheckEvents(); } 

这样就完成了一个事件的设计与添加，如果游戏中有更多的事件类，那就要去派生EventController等3个类。大概就是这样。

 

 

没怎么写过文章，可能语言上有些错误，请谅解。