T端脚本Peacekeeper守护者NPC脚本代码

 这是一个和平守护者卫士NPC脚本，当玩家在这个NPC的一定范围内，一定的x，y坐标内，你就不会有PVP标记。

简单说来，这个就是一个设置安全区域的办法之一！


#include "ScriptPCH.h"


typedef struct {float x, y;} Point;


// This is a list of X, Y coordinates that you want to make your "safe area"  这里就是定义安全区域的坐标位置的地方
// The first and last points MUST be the same for this to work
static const Point V[] = { {4519.443359f, 2709.068359f}, 
{4518.447266f, 2699.789795f}, 
{4512.137695f, 2689.388184f}, 
{4512.927734f, 2674.512207f}, 
{4515.222168f, 2658.663330f}, 
{4523.524902f, 2641.542480f}, 
{4536.573730f, 2630.782715f}, 
{4546.353027f, 2636.786865f}, 
{4562.053711f, 2651.318359f}, 
{4570.511719f, 2663.249756f}, 
{4578.481445f, 2696.588135f}, 
{4564.876465f, 2707.007324f}, 
{4542.565918f, 2708.313477f}, 
{4526.848145f, 2710.782471f}, 
{4519.443359f, 2709.068359f} };


static const int n = 14;


class npc_peacekeeper : public CreatureScript
{
public:
    npc_peacekeeper() : CreatureScript("npc_peacekeeper") {}


    CreatureAI* GetAI(Creature* c) const
    {
        return new npc_peacekeeperAI(c);
    }


    struct npc_peacekeeperAI : public ScriptedAI
    {
        npc_peacekeeperAI(Creature* c) : ScriptedAI(c) {}


              int isLeft(Point P0, Point P1, Point P2)
              {
                  return ( (P1.x - P0.x) * (P2.y - P0.y)
                          - (P2.x - P0.x) * (P1.y - P0.y) );
              }
      
              // Checks if a Point is inside the predefined area
              bool IsInArea(Point P)
              {
                 int wn = 0;  


                  for (int i=0; i < n; i++) 
            {   
                          if (V[i].y <= P.y) 
                {         
                              if (V[i + 1].y > P.y)      
                                  if (isLeft(V[i], V[i+1], P) > 0)  
                                      ++wn;            
                          }
                          else 
                {                       
                              if (V[i + 1].y <= P.y)     
                                  if (isLeft(V[i], V[i+1], P) < 0)  
                                      --wn;            
                          }
                  }
                  return wn != 0;
              }
      
              void Reset()
              {
                 // Only run the check every 1 second rather than every update
                 // Not sure how intensive this algorithm is, but it's better to be safe
                 timer = 1000;
              }
      
        void UpdateAI(uint32 diff)
        {
                 if (timer <= diff)
                 {
                        Map::PlayerList const& Players = me->GetMap()->GetPlayers();
                        for (Map::PlayerList::const_iterator itr = Players.begin(); itr != Players.end(); ++itr)
                        {
                               if (Player* player = itr->GetSource())
                               {
                                  if (player->GetAreaId() != me->GetAreaId())
                                         continue;
                                  Point p = { player->GetPositionX(), player->GetPositionY() };
                                  if (IsInArea(p))
                                         player->SetPvP(false);
                                  else
                                         player->SetPvP(true);
                               }
                       }
                        timer = 1000;
                 } else timer -= diff;
        }
      
              uint32 timer;
    };
};


void AddSC_npc_peacekeeper()
{
    new npc_peacekeeper();
}

上面就是NPC的脚本代码。具体怎么加入到你的内核中去，你就自己想办法了！！