levels.cpp

一个三维打斗游戏

// (C) Copyright 1996 by Anthony J. Carin.  All Rights Reserved.

#include "stdafx.h"
#include "levels.h"
#include <io.h>
#include <fcntl.h>
#include <sys/stat.h>

const short mincamdist = VIEWRANGE/4;
const short maxcamdist = VIEWRANGE/2;

static void getnew(CString& path, short level, CString& filename);

levels::levels()
{
    Game->SetLevelNum(1);
    if (Game->Hero()->gender() == MALE)
        guy = new dude(Game->Hero());
    else
        guy = new girl(Game->Hero());
    Game->DrawQueue()->add(guy);
    coordinate tmp(0.0f,0.0f,0.0f);
    guy->setto((view) tmp);
    camdist = mincamdist;
    camrise = 0.0f;
    camangle = 0;
    camstep = 0.05f;
    camrstep = 0.02f;
    usercontrol = new control(guy);
    tmp.setto(0.0f,15.0f,0.0f);
    camera.stepto(tmp,15.0f);
    mcompleted = FALSE;
#ifdef EDITOR
    selection = 0;
    selectionstep = 1.0f;
    selectioncolor = RGB(250,250,250);
#endif
}

levels::~levels()
{
    delete usercontrol;
}

void levels::draw()
{
    Game->DrawQueue()->run();
#ifdef EDITOR
    if (selection)
    {
        selection->setcolor(RGB(random(256), random(256), random(256)));
    }
#endif
    usercontrol->issuecommands();
    if (!Game->Motionless() && guy->isdead())
    {
        Game->NowMotionless();
        usercontrol->falldown();
    }
    runcamera();
}

void levels::runcamera()
{
    float tmpval = 0.0f;
    switch (Game->Viewmode())
    {
    case CIRCLING:
       camangle = camangle + (direction) 1;
       nextcam.setx(guy->location().x()+tcsin(camangle,camdist));
       nextcam.setz(guy->location().z()+tccos(camangle,camdist));
       nextcam.sety(guy->location().y()+camrise);
       camdist += camstep;
       camrise += camrstep;
       if (camrise > 10.0f)
           camrstep = (float)-fabs(camrstep);
       if (camrise < 2.0f)
           camrstep = (float)fabs(camrstep);
       if (camdist > maxcamdist)
           camstep = (float)-fabs(camstep);
       if (camdist < mincamdist)
           camstep = (float)fabs(camstep);
       camera.stepto(nextcam, .1f, FALSE);
       break;
    case DUDEVIEW:
    case DUDEVIEWHIGH:
    case DUDEVIEWLOW:
       switch (Game->Viewmode())
       {
       case DUDEVIEW:
           camrise = 0.0f;
           break;
       case DUDEVIEWHIGH:
           camrise = -1.4f;
           break;
       case DUDEVIEWLOW:
           camrise = 1.4f;
           break;
       }
       camdist = 3.0f;
       nextcam.setx(guy->location().x()+tcsin(guy->location().ydirection(),-3.0f));
       nextcam.setz(guy->location().z()+tccos(guy->location().ydirection(),-3.0f));
       nextcam.sety(guy->location().y()+camrise);
       camera.stepto(nextcam, .4f, FALSE);
       break;
    case AERIAL:
#ifdef EDITOR
       camrise = 10.0f;
#else
       camrise = 4.0f;
#endif
       camdist = 3.0f;
       nextcam.setx(guy->location().x()+tcsin(guy->location().ydirection(),-1.3f));
       nextcam.setz(guy->location().z()+tccos(guy->location().ydirection(),-1.3f));
       nextcam.sety(guy->location().y()+camrise);
       camera.stepto(nextcam, .3f, FALSE);
       break;
    case HIGHANGLE:
       camrise = 2.0f;
       camangle = camangle + (direction) 1;
       nextcam.setx(guy->location().x()+tcsin(camangle,camdist));
       nextcam.setz(guy->location().z()+tccos(camangle,camdist));
       nextcam.sety(guy->location().y()+camrise);
       camdist += camstep;
       if (camdist > maxcamdist)
           camstep = (float)-fabs(camstep);
       if (camdist < mincamdist)
           camstep = (float)fabs(camstep);
       camera.stepto(nextcam, .5f, FALSE);
       break;
    case RIGHTSIDE:
       tmpval = 3.5f;
       camdist += camstep;
       if (camdist > maxcamdist)
           camstep = (float)-fabs(camstep);
       if (camdist < mincamdist)
           camstep = (float)fabs(camstep);
       nextcam.setx(guy->location().x()-camdist);
       nextcam.setz(guy->location().z());
       nextcam.sety(guy->location().y()+tmpval);
       camera.stepto(nextcam, .5f, FALSE);
       break;
    case LEFTSIDE:
       tmpval = 3.5f;
       camdist += camstep;
       if (camdist > maxcamdist)
           camstep = (float)-fabs(camstep);
       if (camdist < mincamdist)
           camstep = (float)fabs(camstep);
       nextcam.setx(guy->location().x()+camdist);
       nextcam.setz(guy->location().z());
       nextcam.sety(guy->location().y()+tmpval);
       camera.stepto(nextcam, .5f, FALSE);
       break;
    case FRONTSIDE:
       tmpval = 3.5f;
       camdist += camstep;
       if (camdist > maxcamdist)
           camstep = (float)-fabs(camstep);
       if (camdist < mincamdist)
           camstep = (float)fabs(camstep);
       nextcam.setx(guy->location().x());
       nextcam.setz(guy->location().z()+camdist);
       nextcam.sety(guy->location().y()+tmpval);
       camera.stepto(nextcam, .5f, FALSE);
       break;
    case BACKSIDE:
       tmpval = 3.5f;
       camdist += camstep;
       if (camdist > maxcamdist)
           camstep = (float)-fabs(camstep);
       if (camdist < mincamdist)
           camstep = (float)fabs(camstep);
       nextcam.setx(guy->location().x());
       nextcam.setz(guy->location().z()-camdist);
       nextcam.sety(guy->location().y()+tmpval);
       camera.stepto(nextcam, .5f, FALSE);
       break;
    }
    Game->Aim() = guy->location();
}

char exist(LPCTSTR path)
{
    FILE *fp = fopen(path, "r");
    if (fp <= 0)
        return FALSE;
    fclose(fp);
    return TRUE;
}

static void getnew(CString& path, short level, CString& filename)
{
    char tmpbuf[7];
    if (level == 0)
    {
        path = "dudes";
    }
    else
    {
        sprintf(tmpbuf, "%d", level);
        path = "level";
        path += tmpbuf;
    }
    path += '\\';
    path += filename;
    if (!exist((LPCTSTR)path) && level > 0)
        getnew(path, --level, filename);
}

CString& getpath(CString& filename)
{
    static CString path;
    getnew(path, Game->LevelNum(), filename);
    return path;
}