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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#ifndef WIN32
#include "config.h"
#endif
#include "data.h"
#include "cfg.h"
#include "hash.h"
#include "time.h"
#include "md5.h"
#include "error.h"
#include "io.h"
#ifdef TRI_D
int tri_d=0;
int TRI_D_ON=0;
#endif
/* static map of the level */
unsigned char *area;
/* attributes:
lower 4 bits=color
higher 4 bits=type
*/
unsigned char *area_a;
struct sprite *sprites=DUMMY;
unsigned char **sprite_names=DUMMY;
int n_sprites; /* number of sprites */
struct object_list *last_obj;
#define NOBODY 0
#define CLIENT 1
#define BOTH 3
#define BOTH_UPDATE 7
/* object attributes */
struct obj_attr_type obj_attr[N_TYPES]=
{
/* fall, bounce x, bounce y, slow down x, maintainer, foreground */
{1,0,0,PLAYER_SLOW_DOWN_X,BOTH_UPDATE,0}, /* player */
{0,0,0,int2double(1),BOTH,0}, /* bullet */
{1,0,float2double(.25),PLAYER_SLOW_DOWN_X,BOTH,0}, /* corpse */
{1,0,0,0,NOBODY,0}, /* medikit */
{1,0,0,0,NOBODY,0}, /* shotgun */
{1,0,0,0,NOBODY,0}, /* uzi */
{1,0,0,0,NOBODY,0}, /* rifle */
{1,float2double(.8),float2double(.5),float2double(.8),CLIENT,0}, /* shell */
{1,0,0,0,NOBODY,0}, /* ammo for gun */
{1,0,0,0,NOBODY,0}, /* ammo for shotgun */
{1,0,0,0,NOBODY,0}, /* ammo for uzi */
{1,0,0,0,NOBODY,0}, /* ammo for rifle */
{0,0,0,0,NOBODY,0}, /* nothing */
{1,float2double(.4),float2double(.4),float2double(.3),CLIENT,0}, /* mess */
{1,float2double(.5),float2double(.5),float2double(.9),BOTH/*_UPDATE*/,0}, /* grenade */
{1,0,0,0,NOBODY,0}, /* grenade ammo */
{1,0,0,int2double(1),BOTH,0}, /* grenade shrapnel */
{1,0,0,0,NOBODY,0}, /* armor */
{1,0,0,0,NOBODY,0}, /* invisibility */
{1,0,0,0,NOBODY,0}, /* noise */
{0,0,0,0,NOBODY,1}, /* nothing in foreground */
{0,0,0,0,NOBODY,1}, /* killing object */
};
/* weapon attributes */
struct weapon_type weapon[ARMS]=
{
/* name, cadence, ttl, bullet speed, impact, lethalness, armor damage, basic ammo, additional ammo, max ammo, shell xspeed, shell yspeed */
{"Browning",16,50,float2double(3*36),float2double(.3*36),20,2,13,12,48,float2double((double).3*36),-float2double(1*36)},
{"Shotgun",25,50,float2double(3*36),float2double(.5*36),10,5,6,12,30,float2double((double).3*36),-float2double((double)1.2*36)},
{"Uzi",3,50,float2double(4*36),float2double(.25*36),15,4,50,50,150,float2double((double).9*36),-float2double((double)1.5*36)},
{"Rifle",40,70,float2double(6*36),float2double(.4*36),50,20,1,15,15,0,0},
{"Grenades",15,60,float2double((double)3.73*36),0,75,40,0,6,24,float2double(3*36),-float2double((double)1.5*36)} /* shell speed=grenade throwing speed, bullet speed=shrapnel speed */
};
/* initialize playing area */
/* must be run before loading data */
void init_area(void)
{
area=mem_alloc(AREA_X*AREA_Y);
if (!area){ERROR("Error: Not enough memory!\n");EXIT(1);}
area_a=mem_alloc(AREA_X*AREA_Y);
if (!area_a){ERROR("Error: Not enough memory!\n");EXIT(1);}
memset(area,' ',AREA_X*AREA_Y);
memset(area_a,0,AREA_X*AREA_Y);
}
void free_area(void)
{
mem_free(area);
mem_free(area_a);
}
/* reinitializes playing area */
/* must be called before loading new level */
void reinit_area(void)
{
memset(area,' ',AREA_X*AREA_Y);
memset(area_a,0,AREA_X*AREA_Y);
}
/* skip white space */
/* ancillary function */
void _skip_ws(char **txt)
{
for (;(**txt)==' '||(**txt)==9||(**txt)==10;(*txt)++);
}
/* find sprite according to its name */
/* returns 1 on error */
/* it's slow but not called in speed critical parts of the program */
int find_sprite(unsigned char *name,int *num)
{
for ((*num)=0;(*num)<n_sprites;(*num)++)
if (!strcmp(sprite_names[*num],name))return 0;
return 1;
}
/* convert type character (from data files) into type */
int _convert_type(unsigned char c)
{
switch(c)
{
/* static objects */
case 'b': return TYPE_BACKGROUND;
case 'w': return TYPE_WALL;
case 'j': return TYPE_JUMP;
case 'f': return TYPE_FOREGROUND;
case 'i': return TYPE_JUMP_FOREGROUND;
/* dynamic objects, they use great letter */
case 'M': return T_MEDIKIT;
case 'A': return T_ARMOR;
case 'N': return T_NOTHING;
case 'F': return T_NOTHING_FORE;
case 'K': return T_KILL;
case 'S': return T_SHOTGUN;
case 'U': return T_UZI;
case 'R': return T_RIFLE;
case '1': return T_AMMO_GUN;
case '2': return T_AMMO_SHOTGUN;
case '3': return T_AMMO_UZI;
case '4': return T_AMMO_RIFLE;
case '5': return T_AMMO_GRENADE;
case 'I': return T_INVISIBILITY;
/* birthplace */
case 'B': return TYPE_BIRTHPLACE;
default:
return -1;
}
}
/* load static data */
void load_data(unsigned char * filename)
{
FILE * stream;
static char line[1024];
char *p,*q,*name;
int n,x,y;
int t;
if (!(stream=open_data(filename,"rb")))
{
char msg[256];
snprintf(msg,256,"Can't open file \"%s\"!\n",filename);
ERROR(msg);
EXIT(1);
}
while(fgets(line,1024,stream))
{
p=line;
_skip_ws(&p);
for (name=p;(*p)!=' '&&(*p)!=9&&(*p)!=10&&(*p);p++);
if (!(*p))continue;
*p=0;p++;
_skip_ws(&p);
if ((t=_convert_type(*p))<0)
{
char msg[256];
snprintf(msg,256,"Unknown object type '%c'.\n",*p);
ERROR(msg);
EXIT(1);
}
p++;
_skip_ws(&p);
x=strtol(p,&q,0);
_skip_ws(&q);
y=strtol(q,&p,0);
if (find_sprite(name,&n))
{
char msg[256];
snprintf(msg,256,"Unknown bitmap name \"%s\"!\n",name);
ERROR(msg);
EXIT(1);
}
_put_sprite(AREA_X,AREA_Y,area,area_a,x,y,sprites[n].positions,t,0);
}
fclose(stream);
}
/* load sprites */
void load_sprites(unsigned char * filename)
{
FILE *stream;
static char line[1024];
char *p,*q;
int l;
stream=open_data(filename,"rb");
if (!stream)
{
char msg[256];
snprintf(msg,256,"Can't open file \"%s\"!\n",filename);
ERROR(msg);
EXIT(1);
}
while(fgets(line,1024,stream))
{
p=line;
_skip_ws(&p);
for (q=p;(*p)!=' '&&(*p)!=9&&(*p)!=10&&(*p);p++);
if (!(*p))continue;
*p=0;p++;
l=strlen(q);
n_sprites++;
sprite_names=(unsigned char **)mem_realloc(sprite_names,n_sprites*sizeof(unsigned char*));
if (!sprite_names){ERROR("Memory allocation error!\n");EXIT(1);}
sprites=(struct sprite *)mem_realloc(sprites,n_sprites*sizeof(struct sprite));
if (!sprites){ERROR("Memory allocation error!\n");EXIT(1);}
sprite_names[n_sprites-1]=(char *)mem_alloc(l+1);
if (!sprite_names[n_sprites-1]){ERROR("Memory allocation error!\n");EXIT(1);}
memcpy(sprite_names[n_sprites-1],q,l+1);
_skip_ws(&p);
for (q=p;(*p)!=' '&&(*p)!=9&&(*p)!=10&&(*p);p++);
*p=0;p++;
load_sprite(q,sprites+(n_sprites-1));
}
fclose(stream);
}
void free_sprites(int start_num)
{
int a;
for (a=start_num;a<n_sprites;a++)
{
mem_free(sprite_names[a]);
free_sprite(sprites+a);
}
n_sprites=start_num;
sprite_names=(unsigned char **)mem_realloc(sprite_names,n_sprites*sizeof(unsigned char*));
if (!sprite_names){ERROR("Memory allocation error!\n");EXIT(1);}
sprites=mem_realloc(sprites,n_sprites*sizeof(struct sprite));
if (!sprites){ERROR("Memory allocation error!\n");EXIT(1);}
}
/* returns allocated string with level name or NULL on error */
/* level_num is a line number in the LEVEL_FILE */
unsigned char *load_level(int level_num)
{
unsigned char txt[1024];
unsigned char *retval;
int a;
FILE *f;
/* hardcoded path */
f=open_data(DATA_PATH LEVEL_FILE,"r");
if (!f)return NULL;
for (a=0;a<=level_num;)
{
if (!(fgets(txt,1024,f)))return NULL;
/* remove trailing CR and/or LF */
if (txt[strlen(txt)-1]==10)txt[strlen(txt)-1]=0;
if (txt[strlen(txt)-1]==13)txt[strlen(txt)-1]=0;
if (strlen(txt))a++;
}
fclose(f);
a=strlen(txt);
retval=mem_alloc(1+a*sizeof(unsigned char));
if (!retval)return NULL;
memcpy(retval,txt,a+1); /* including trailing zero */
if (!strlen(retval)){mem_free(retval);return NULL;}
return retval;
}
/* create a new object and fill with data and add to hash table */
struct it * new_obj(
unsigned int id,
unsigned char type,
int ttl,
int sprite,
unsigned char pos,
int status,
my_double x,
my_double y,
my_double xspeed,
my_double yspeed,
void * data)
{
last_obj->next=mem_alloc(sizeof(struct object_list));
if (!last_obj->next)return 0;
last_obj->next->prev=last_obj;
last_obj=last_obj->next;
last_obj->next=0;
last_obj->member.x=x;
last_obj->member.y=y;
last_obj->member.xspeed=xspeed;
last_obj->member.yspeed=yspeed;
last_obj->member.type=type;
last_obj->member.ttl=ttl;
last_obj->member.sprite=sprite;
last_obj->member.anim_pos=pos;
last_obj->member.data=data;
last_obj->member.id=id;
last_obj->member.status=status;
last_obj->member.update_counter=0;
last_obj->member.last_updated=get_time();
add_to_table(last_obj);
return &(last_obj->member);
}
/* completely delete object from the list */
void delete_obj(unsigned long id)
{
struct object_list *q;
if (!(q=remove_from_table(id)))return; /* packets can come more than once, so we must ignore deleting deleted object */
q->prev->next=q->next;
if (!q->next) last_obj=q->prev; /* q is last object in list */
else q->next->prev=q->prev;
mem_free(q);
}
void put_long_long(unsigned char *p,unsigned long_long num)
{
p[0]=num&255;num>>=8;
p[1]=num&255;num>>=8;
p[2]=num&255;num>>=8;
p[3]=num&255;num>>=8;
p[4]=num&255;num>>=8;
p[5]=num&255;num>>=8;
p[6]=num&255;num>>=8;
p[7]=num&255;
}
void put_int(unsigned char *p,int num)
{
p[0]=num&255;num>>=8;
p[1]=num&255;num>>=8;
p[2]=num&255;num>>=8;
p[3]=num&255;
}
int get_int(unsigned char *p)
{
return (int)p[0]+
((int)(p[1])<<8)+
((int)(p[2])<<16)+
((int)(p[3])<<24);
}
void put_int16(unsigned char *p,int num)
{
p[0]=num&255;num>>=8;
p[1]=num&255;
}
int get_int16(unsigned char *p)
{
return (int)p[0]+((int)(p[1])<<8);
}
my_double get_float(unsigned char *p)
{
int a;
a= (int)p[0]+
((int)(p[1])<<8)+
((int)(p[2])<<16)+
((int)(p[3])<<24);
return a;
}
void put_float(unsigned char *p,my_double num)
{
p[0]=num&255;num>>=8;
p[1]=num&255;num>>=8;
p[2]=num&255;num>>=8;
p[3]=num&255;
}
unsigned long_long get_long_long(unsigned char *p)
{
#define ULL unsigned long_long
return (ULL)p[0]+
((ULL)(p[1])<<8)+
((ULL)(p[2])<<16)+
((ULL)(p[3])<<24)+
((ULL)(p[4])<<32)+
((ULL)(p[5])<<40)+
((ULL)(p[6])<<48)+
((ULL)(p[7])<<56);
#undef ULL
}
/* test if vertical line from yh to yl can move from old_x to new_x axis */
/* returns farthest possible x axis */
/* flag is filled with 1 if objects is stopped */
my_double can_go_x(my_double old_x,my_double new_x,int yh, int yl,unsigned char *flag)
{
int x,y;
if (old_x==new_x+.5)
{
if(flag)*flag=0;
return new_x;
}
if(flag)*flag=1;
if (old_x<new_x)
for (x=double2int(old_x)+1;x<=round_up(new_x);x++) /* go to the right */
{
if (x>AREA_X-1) return int2double(AREA_X-1);
for (y=yh;y<=yl;y++)
if ((area_a[x+y*AREA_X]&240)==TYPE_WALL)
return int2double(x-1);
}
else
for (x=round_up(old_x)-1;x>=double2int(new_x);x--) /* go to the left */
{
if (x<0) return 0;
for (y=yh;y<=yl;y++)
if ((area_a[x+y*AREA_X]&240)==TYPE_WALL) return int2double(x+1);
}
if(flag)*flag=0;
return new_x;
}
/* test if horizontal line from xl to xr can move from old_y to new_y axis */
/* returns farthest possible y axis */
/* flag is filled with 1 if objects is stopped */
/* down ladder: 1=fall through ladders etc., 0=stand on ladders */
my_double can_go_y(my_double old_y, my_double new_y,int xl, int xr,unsigned char *flag,unsigned char down_ladder)
{
int x,y;
if (old_y==new_y){if(flag)*flag=0;return new_y;}
if(flag)*flag=1;
if (old_y<new_y)
for (y=double2int(old_y)+1;y<=round_up(new_y);y++) /* go down */
{
if (y>AREA_Y-1) return int2double(AREA_Y-1);
for (x=xl;x<=xr;x++)
if ((area_a[x+y*AREA_X]&240)==TYPE_WALL||(!down_ladder&&((area_a[x+y*AREA_X]&240)==TYPE_JUMP||(area_a[x+y*AREA_X]&240)==TYPE_JUMP_FOREGROUND))) return int2double(y-1);
}
else
{
if (flag)*flag=2;
for (y=round_up(old_y)-1;y>=double2int(new_y);y--) /* go up */
{
if (y<0) return 0;
for (x=xl;x<=xr;x++)
if ((area_a[x+y*AREA_X]&240)==TYPE_WALL) return int2double(y+1);
}
}
if(flag)*flag=0;
return new_y;
}
/* automatically computes dimensions of unknown type, if anim positions is given */
/* object must be rectangular */
#ifdef HAVE_INLINE
inline void
#else
void
#endif
get_dimensions(int type,int status,struct pos *s,int *w,int *h)
{
switch(type)
{
case T_PLAYER:
if (status&256)
{
*w=CREEP_WIDTH;
*h=CREEP_HEIGHT;
}
else
{
*w=PLAYER_WIDTH;
*h=PLAYER_HEIGHT;
}
return;
case T_SHOTGUN:
*w=22;
*h=3;
return;
case T_UZI:
*w=12;
*h=3;
return;
default:
*w=0;
if (!s){*h=0;return;}
*h=s->n;
if (*h)*w=s->lines[0].len;
}
}
/* updates object's position */
void update_position(struct it* obj,my_double new_x,my_double new_y,int width, int height,unsigned char *fx,unsigned char *fy)
{
unsigned char down_ladder=0;
/* player is climbing ladder down */
if (obj->type==T_PLAYER&&obj->status&2048) down_ladder=1;
if (obj->xspeed>0)
obj->x=sub_int(can_go_x(add_int(obj->x,width-1),add_int(new_x,width-1),double2int(obj->y),round_up(obj->y)+height-1,fx),width-1);
else
obj->x=can_go_x(obj->x,new_x,double2int(obj->y),round_up(obj->y)+height-1,fx);
if (obj->yspeed>0)
obj->y=sub_int(can_go_y(add_int(obj->y,height-1),add_int(new_y,height-1),double2int(obj->x),round_up(obj->x)+width-1,fy,down_ladder),height-1);
else
obj->y=can_go_y(obj->y,new_y,double2int(obj->x),round_up(obj->x)+width-1,fy,down_ladder);
}
unsigned char *__add_md5(unsigned char *filename, int *len, unsigned char**result)
{
unsigned char *p,*q;
int a;
unsigned char *fname = (char*)malloc(strlen(filename)+
strlen(DATADIR_PREFIX)+1);
strcpy(fname, DATADIR_PREFIX);
strcat(fname, filename);
q=MD5File(fname,NULL);
a=strlen(q);
if (!(*result))*result=DUMMY;
p=mem_realloc((*result),(*len)+a+1);
if (!result)return NULL;
(*result)=p;
memcpy((*result)+(*len),q,a+1);
mem_free(q);
(*len)+=a;
return (*result);
}
/* computes md5 sum from the level
* level_num is the line number in level.dat file
* returns allocated string with the MD5 sum or NULL (on error)
*/
unsigned char* md5_level(int level_num)
{
unsigned char *result=0;
char *q;
int len=0;
unsigned char p[2048];
q=load_level(level_num);
if (!q)return NULL;
if (!__add_md5(DATA_PATH LEVEL_FILE,&len,&result)){mem_free(result);return NULL;}
snprintf(p,2048,"%s%s%s",DATA_PATH,q,LEVEL_SPRITES_SUFFIX);
if (!__add_md5(p,&len,&result)){mem_free(result);return NULL;}
snprintf(p,2048,"%s%s%s",DATA_PATH,q,STATIC_DATA_SUFFIX);
if (!__add_md5(p,&len,&result)){mem_free(result);return NULL;}
snprintf(p,2048,"%s%s%s",DATA_PATH,q,DYNAMIC_DATA_SUFFIX);
if (!__add_md5(p,&len,&result)){mem_free(result);return NULL;}
snprintf(p,2048,"%s%s%s",DATA_PATH,q,LEVEL_SPRITES_SUFFIX);
mem_free(q);
{
FILE *f;
f=open_data(p,"r");
if (!f){mem_free(result);return NULL;}
while (fgets(p,2048,f))
{
if (p[strlen(p)-1]==13)p[strlen(p)-1]=0;
if (p[strlen(p)-1]==10)p[strlen(p)-1]=0;
q=p;
_skip_ws(&q);
for (;(*q)&&(*q)!=' '&&(*q)!=9&&(*q)!=10&&(*q)!=13;q++);
_skip_ws(&q);
if (!strlen(q))continue;
if (!__add_md5(q,&len,&result)){mem_free(result);return NULL;}
}
fclose(f);
}
q=MD5Data(result,len,NULL);
mem_free(result);
return q;
}
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