map.cpp

This programm is proxy server for ragnarok online game. Also it s can be use as bot. It control all

#include "map.h"
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <malloc.h>

struct map_data map;


unsigned char * gat_read(char *fname, int *size)
{
    FILE *in = NULL;
    unsigned char *buf=NULL,*buf2=NULL;
    
    char lfname[256];
    int declen;
    
    strncpy(lfname,fname,255);
    lfname[255] = 0;
        
    in = fopen(lfname,"rb");
    
    if(in!=NULL) 
    {    
        fseek(in,0,2);	// SEEK_END
        declen = ftell(in); // size

        fseek(in,0,0);	// SEEK_SET
        buf2 = (unsigned char *)malloc(declen+1024);
        if (buf2==NULL) 
        { 
            //printf("file read memory allocate error : declen\n");
            goto errret;
        }
        fread(buf2,1,declen,in);
        fclose(in); in = NULL;
    } 
    else 
    {   
        //printf("%s not found\n", fname);
        goto errret;    
    }
    
    if (size!=NULL)
        *size = declen;
    
    return buf2;
    
errret:
    
    if (buf!=NULL) free(buf);
    if (buf2!=NULL) free(buf2);
    if (in!=NULL) fclose(in);
    return NULL; 
}

static struct WaterDescr
{
	char mapname[24];
	int waterheight;
} *waterlist=NULL;

#define NO_WATER 1000000

int map_waterheight(char *mapname)
{
	if(waterlist){
		int i;
		for(i=0;waterlist[i].mapname[0] && i < MAX_MAP_PER_SERVER;i++)
			if(strcmp(waterlist[i].mapname,mapname)==0)
				return waterlist[i].waterheight;
	}
	return NO_WATER;
}
    
int map_readmap(char *fn)
{
	unsigned char *gat;
	int s;
	int x,y,xs,ys;
	struct gat_1cell {float high[4]; int type;} *p;
	int wh;

	// read & convert fn
	gat=gat_read(fn, NULL);
	if(gat==NULL)
		return 0;

	xs=map.xs=*(int*)(gat+6);
	ys=map.ys=*(int*)(gat+10);
	map.gat=(unsigned char *)malloc(s=map.xs*map.ys);
	if(map.gat==NULL){
		printf("out of memory : map_readmap gat\n");
		exit(1);
	}

	memset(&map.flag,0,sizeof(map.flag));
	wh=map_waterheight(map.name);
	for(y=0;y<ys;y++){
		p=(struct gat_1cell*)(gat+y*xs*20+14);
		for(x=0;x<xs;x++){
			if(wh!=NO_WATER && p->type==0){
				// 悈応敾掕 : Water place decision
				map.gat[x+y*xs]=(p->high[0]>wh || p->high[1]>wh || p->high[2]>wh || p->high[3]>wh) ? 3 : 0;
			} else {
				map.gat[x+y*xs]=p->type;
			}
			p++;
		}
	}
	free(gat);

	return 1;
}

int map_readwater(char *watertxt)
{
	char line[1024],w1[1024];
	FILE *fp;
	int n=0;

	fp=fopen(watertxt,"r");
	if(fp==NULL){
		return 0;
	}
	if(waterlist==NULL)
		waterlist=(struct WaterDescr *)calloc(MAX_MAP_PER_SERVER,sizeof(*waterlist));
	while(fgets(line,1020,fp) && n < MAX_MAP_PER_SERVER){
		int wh,count;
		if(line[0] == '/' && line[1] == '/')
			continue;
		if((count=sscanf(line,"%s%d",w1,&wh)) < 1){
			continue;
		}
		strcpy(waterlist[n].mapname,w1);
		if(count >= 2)
			waterlist[n].waterheight = wh;
		else
			waterlist[n].waterheight = 3;
		n++;
	}
	fclose(fp);

    return 1;
}

void map_finish()
{
    if(map.gat)
        free(map.gat);
    
    if(waterlist)
        free(waterlist);
}