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client.c
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client.c
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/* When compiling with X support don't forget to define XWINDOW symbol */
#ifndef WIN32
#include "config.h"
#endif
#include <stdio.h>
#include <signal.h>
#include <math.h>
#ifdef HAVE_PTHREAD_H
#include <pthread.h>
#endif
#ifdef HAVE_FLOAT_H
#include <float.h>
#endif
#ifdef HAVE_SIGINFO_H
#include <siginfo.h>
#endif
#ifdef HAVE_SYS_SELECT_H
#include <sys/select.h>
#endif
#include <ctype.h>
#if (!defined(WIN32))
#ifdef TIME_WITH_SYS_TIME
#include <sys/time.h>
#include <time.h>
#else
#ifdef TM_IN_SYS_TIME
#include <sys/time.h>
#else
#include <time.h>
#endif
#endif
#else
#include <time.h>
#endif
#include <errno.h>
#include <stdlib.h>
#ifndef WIN32
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
#ifndef __USE_GNU
#define __USE_GNU
#endif
#else
#include <winsock.h>
#endif
#include <string.h>
#include "blit.h"
#include "sprite.h"
#include "data.h"
#include "cfg.h"
#include "net.h"
#include "hash.h"
#include "console.h"
#include "time.h"
#include "math.h"
#include "help.h"
#include "getopt.h"
#include "error.h"
#ifdef XWINDOW
#include "x.h"
#endif
#undef PAUSE
#ifdef WIN32
int consoleApp=1;
#endif
/* settings */
#define OVERRIDE_FLAG_HOST 0x01
#define OVERRIDE_FLAG_NAME 0x02
#define OVERRIDE_FLAG_PORT 0x04
#define OVERRIDE_FLAG_COLOR 0x08
struct config {
int argc;
char **argv;
char host[MAX_HOST_LEN+1];
char name[MAX_NAME_LEN+1];
int port;
int color;
char override;
};
struct {
int flags;
char *text;
} errormsg = {0, ""};
/* my health, armor, frags, deaths, ammo, ... and ID */
unsigned char health,armor;
unsigned int frags,deaths;
unsigned short ammo[ARMS];
unsigned short current_weapon;
unsigned short weapons;
unsigned char creep;
unsigned char autorun,autocreep;
int my_id;
/* connection with server */
int connected;
int level_number=-1;
/* networking */
int fd; /* socket */
struct sockaddr_in server; /* server address */
/* objects */
struct object_list objects;
struct object_list *last_obj;
struct it* hero;
/* important sprites */
int hit_sprite;
int title_sprite;
int bulge_sprite;
int shrapnel_sprite[N_SHRAPNELS],bfgbit_sprite[N_SHRAPNELS],bloodrain_sprite[N_SHRAPNELS],jetpack_sprite,fire_sprite,chain_sprite;
int level_sprites_start; /* number of first sprite in the level (all other level sprites follow) */
unsigned long_long game_start_offset; /* time difference between game start on this machine and on server */
int gsbi = 0;
/* top players table */
struct
{
char name[MAX_NAME_LEN+1];
int frags,deaths;
unsigned char color;
}top_players[TOP_PLAYERS_N];
/* # of active players in the game */
int active_players;
#define KBD_RIGHT (1 << 0)
#define KBD_LEFT (1 << 1)
#define KBD_JUMP (1 << 2)
#define KBD_CREEP (1 << 3)
#define KBD_SPEED (1 << 4)
#define KBD_FIRE (1 << 5)
#define KBD_DOWN_LADDER (1 << 6)
#define KBD_JETPACK (1 << 7)
struct /* keyboard status */
{
unsigned char status, weapon;
} keyboard_status;
/* message */
struct msgline_type
{
unsigned long_long time;
char color;
char *msg;
}msg_line[N_MESSAGES];
int last_message;
char error_message[1024];
unsigned char set_size; /* -s option was on the command line */
/* convert key to key with shift */
int my_toupper(int c)
{
switch(c)
{
case '1': return '!';
case '2': return '@';
case '3': return '#';
case '4': return '$';
case '5': return '%';
case '6': return '^';
case '7': return '&';
case '8': return '*';
case '9': return '(';
case '0': return ')';
case '-': return '_';
case '=': return '+';
case '\\': return '|';
case '[': return '{';
case ']': return '}';
case ';': return ':';
case '\'': return '"';
case ',': return '<';
case '.': return '>';
case '/': return '?';
case '`': return '~';
default: return toupper(c);
}
}
void wait_for_enter(void)
{
c_update_kbd();
while (!c_was_pressed(K_ENTER))
{
c_wait_for_key();
c_update_kbd();
}
}
/* load configure file from player's home directory */
int read_cfg_entry(FILE *stream, char *retval, int len)
{
int l;
if (!fgets(retval,len+2,stream))
return 0;
l = strlen(retval);
if (retval[l-1] == 10)
retval[l-1] = 0;
return l;
}
int load_default_cfg(struct config *cfg, char state)
{
char *host = "localhost";
char *name = "Player";
/* we dont want to loose argc and argv here ... */
memcpy(cfg->host, host, strlen(host));
memcpy(cfg->name, name, strlen(name));
cfg->port = 6666;
cfg->color = C_D_GREY;
errormsg.flags = (state >> 1) ? E_DEFAULTS : 0;
errormsg.text = "Error loading configuration file, defaults loaded. Press ENTER.";
return state;
}
int load_cfg(struct config *cfg)
{
FILE *stream;
int a;
char txt[256];
#ifndef WIN32
snprintf(txt, sizeof(txt), "%s/%s",getenv("HOME"),CFG_FILE);
stream=fopen(txt,"r");
#else
snprintf(txt, sizeof(txt), "./%s", CFG_FILE);
fopen_s(&stream, txt, "r");
#endif
if (!stream)
return load_default_cfg(cfg, 1);
if (a = read_cfg_entry(stream, txt, MAX_HOST_LEN))
memcpy(cfg->host,txt,a+1);
else
return load_default_cfg(cfg, 2);
if (a = read_cfg_entry(stream, txt, MAX_NAME_LEN))
memcpy(cfg->name,txt,a+1);
else
return load_default_cfg(cfg, 3);
if (a = read_cfg_entry(stream, txt, MAX_PORT_LEN))
cfg->port = strtol(txt,0,10);
else
return load_default_cfg(cfg, 4);
if (a = read_cfg_entry(stream, txt, 4))
cfg->color = strtol(txt,0,10);
else
return load_default_cfg(cfg, 5);
fclose(stream);
return 0;
}
/* save configure file to player's home */
void save_cfg(struct config *cfg)
{
FILE *stream;
char txt[256];
struct config dcfg;
memcpy(&dcfg, cfg, sizeof(struct config));
#ifndef WIN32
snprintf(txt, sizeof(txt), "%s/%s",getenv("HOME"),CFG_FILE);
#else
snprintf(txt, sizeof(txt), "./%s",CFG_FILE);
#endif
if (cfg->override) {
load_cfg(&dcfg);
if (!(cfg->override & OVERRIDE_FLAG_HOST))
memcpy(dcfg.host, cfg->host, strlen(cfg->host));
if (!(cfg->override & OVERRIDE_FLAG_NAME))
memcpy(dcfg.name, cfg->name, strlen(cfg->name));
if (!(cfg->override & OVERRIDE_FLAG_PORT))
dcfg.port = cfg->port;
if (!(cfg->override & OVERRIDE_FLAG_COLOR))
dcfg.color = cfg->color;
}
#ifndef WIN32
stream=fopen(txt,"w");
#else
fopen_s(&stream, txt, "w");
#endif
if (!stream)
return;
fprintf(stream, "%s\n%s\n%d\n%d\n", dcfg.host, dcfg.name,
dcfg.port, dcfg.color);
fclose(stream);
}
void scroll_messages(void)
{
int a;
if (last_message<0)return;
for (a=0;a<=last_message-1;a++)
{
msg_line[a].time=msg_line[a+1].time;
msg_line[a].color=msg_line[a+1].color;
msg_line[a].msg=mem_realloc(msg_line[a].msg,strlen(msg_line[a+1].msg)+1);
memcpy(msg_line[a].msg,msg_line[a+1].msg,strlen(msg_line[a+1].msg)+1);
}
mem_free(msg_line[last_message].msg);
msg_line[last_message].msg=0;
last_message--;
}
void add_message(char *message, unsigned char flags)
{
int last;
if (last_message == N_MESSAGES - 1)
scroll_messages();
last = last_message + 1;
msg_line[last].time = get_time() + MESSAGE_TTL;
switch (flags) {
case M_CHAT:
msg_line[last].color = C_YELLOW;
break;
case M_INFO:
msg_line[last].color = C_CYAN;
break;
case M_ENTER:
msg_line[last].color = C_GREEN;
break;
case M_LEAVE:
msg_line[last].color = C_D_RED;
break;
case M_AMMO:
msg_line[last].color = C_GREY;
break;
case M_WEAPON:
msg_line[last].color = C_BLUE;
break;
case M_ITEM:
msg_line[last].color = C_MAGENTA;
break;
case M_DEATH:
msg_line[last].color = C_RED;
break;
default:
msg_line[last].color = MESSAGE_COLOR;
break;
}
msg_line[last].msg = mem_alloc(strlen(message) + 1);
if (!msg_line[last].msg)
return; /* not such a fatal errror */
memcpy(msg_line[last].msg, message, strlen(message) + 1);
last_message = last;
}
void print_messages(void)
{
int a;
for (a=0;a<=last_message;a++)
print2screen(0,a,msg_line[a].color,msg_line[a].msg);
}
/* throw out old messages */
void update_messages(unsigned long_long time)
{
int a,b;
for(a=0,b=0;a<=last_message;a++)
if (msg_line[b].time<=time)scroll_messages();
else b++;
}
/* destroys all objects and messages */
void clean_memory(void)
{
int a;
struct object_list *o;
/* delete all objects except hero */
for (o=&objects;o->next;)
if ((hero->id)!=(o->next->member.id))delete_obj(o->next->member.id);
else o=o->next;
/* delete messages */
for (a=0;a<=last_message;a++)
mem_free(msg_line[a].msg);
msg_line[last_message].msg=0;
last_message=-1;
}
/* shut down the client */
void shut_down(int x)
{
struct object_list *o;
int a;
c_shutdown();
free_sprites(0);
free_area();
if (!x&&hero)delete_obj(hero->id);
/* delete all objects except hero */
for (o=&objects;o->next;)
delete_obj(o->next->member.id);
/* delete messages */
for (a=0;a<=last_message;a++)
mem_free(msg_line[a].msg);
msg_line[last_message].msg=0;
shutdown_sprites();
free_packet_buffer();
check_memory_leaks();
if (x)EXIT(0);
}
/* find address of server and fill the server address structure */
char * find_server(struct config *cfg)
{
struct hostent *h;
h=gethostbyname(cfg->host);
if (!h)
return "Error: Can't resolve server address.";
server.sin_family=AF_INET;
server.sin_port=htons(cfg->port);
server.sin_addr=*((struct in_addr*)(h->h_addr_list[0]));
return 0;
}
/* initialize socket */
char * init_socket(void)
{
fd=socket(PF_INET,SOCK_DGRAM,IPPROTO_UDP);
if(fd<0)return "Can't get socket.\n";
return 0;
}
#define MAX_COUNT 32
/* send quit request to server */
void send_quit(void)
{
char p;
fd_set rfds;
struct timeval tv;
int a=sizeof(server);
int count=0;
tv.tv_sec=2;
tv.tv_usec=0;
FD_ZERO(&rfds);
FD_SET(fd,&rfds);
send_again:
p=P_QUIT_REQUEST;
count ++;
send_packet(&p,1,(struct sockaddr *)(&server),my_id,0);
if (!select(fd+1,&rfds,0,0,&tv)&&count<=MAX_COUNT)goto send_again;
recv_packet(&p,1,(struct sockaddr*)(&server),&a,1,my_id,0);
if (p!=P_PLAYER_DELETED&&count<=MAX_COUNT)goto send_again;
if(fd) close(fd);
}
#undef MAX_COUNT
void server_error(char *msg, int err)
{
errormsg.text = msg;
errormsg.flags = err;
}
/* initiate connection with server */
int contact_server(struct config *cfg)
{
char *name = cfg->name;
int color = cfg->color;
static char packet[256];
int l=strlen(name)+1;
int a,r;
int min,maj;
fd_set fds;
struct timeval tv;
tv.tv_sec=4;
tv.tv_usec=0;
FD_ZERO(&fds);
FD_SET(fd,&fds);
packet[0]=P_NEW_PLAYER;
packet[1]=0;
packet[2]=VERSION_MAJOR;
packet[3]=VERSION_MINOR;
packet[4]=color;
memcpy(packet+5,name,l);
send_packet(packet,l+5,(struct sockaddr*)(&server),my_id,0);
if (!select(fd+1,&fds,NULL,NULL,&tv)) {
server_error("No reply within 4 seconds. Press ENTER.", E_CONN);
return 1;
}
if ((r=recv_packet(packet,256,0,0,1,0,0))<0)
{
if (errno==EINTR) {
server_error("Server hung up. Press ENTER.", E_CONN);
return 1;
} else {
server_error("Connection error. Press ENTER.", E_CONN);
return 1;
}
}
switch(*packet)
{
case P_PLAYER_REFUSED:
switch(packet[1])
{
case E_INCOMPATIBLE_VERSION:
server_error("Incompatible client version. Connection refused. Press Enter.", E_CONN);
return 1;
case E_NAME_IN_USE:
server_error("Another player on this server uses the same name. Press Enter.", E_CONN);
return 1;
default:
server_error("Connection refused. Press ENTER.", E_CONN);
return 1;
}
case P_PLAYER_ACCEPTED:
my_id=get_int(packet+35);
if (r<41) {
send_quit();
server_error("Incompatible server version. Givin' up. Press Enter.", E_CONN);
return 1;
}
maj=packet[39];
min=packet[40];
if (maj!=VERSION_MAJOR||min<MIN_SERVER_VERSION_MINOR) {
send_quit();
server_error("Incompatible server version. Givin' up. Press Enter.", E_CONN);
return 1;
}
game_start_offset=get_time();
game_start_offset-=get_long_long(packet+27);
health=100;
armor=0;
for(a=0;a<ARMS;a++)
ammo[a]=0;
ammo[WEAPON_GUN]=weapon[WEAPON_GUN].basic_ammo;
ammo[WEAPON_CHAINSAW]=weapon[WEAPON_CHAINSAW].basic_ammo;
current_weapon=0;
weapons=WEAPON_MASK_GUN |
WEAPON_MASK_GRENADE |
WEAPON_MASK_CHAINSAW |
WEAPON_MASK_BLOODRAIN; /* gun, grenades, chainsaw and blodrain */
hero=new_obj(
get_int(packet+1), /* ID */
T_PLAYER, /* type */
0, /* time to live */
get_int16(packet+5), /* sprite */
0, /* position */
get_int(packet+23), /* status */
get_int(packet+7), /* X */
get_int(packet+11), /* Y */
get_int(packet+15), /* XSPEED */
get_int(packet+19), /* YSPEED */
0
);
break;
default:
server_error("Connection error. Press ENTER.", E_CONN);
return 1;
}
server_error("",
#ifdef HAVE_LIBPTHREAD
E_CONN_SUCC
#else
E_NONE
#endif
);
return 0;
}
/* send me top X players */
void send_info_request(void)
{
char packet;
packet=P_INFO;
send_packet(&packet,1,(struct sockaddr*)(&server),my_id,0);
}
/* I want to be born again */
void send_reenter_game(void)
{
char packet;
packet=P_REENTER_GAME;
send_packet(&packet,1,(struct sockaddr*)(&server),my_id,0);
}
/* send end of game to server */
void end_game(void)
{
char packet;
packet=P_END;
send_packet(&packet,1,(struct sockaddr*)(&server),my_id,0);
}
/* send chat message */
void send_message(char *msg, char flags)
{
static char packet[MAX_MESSAGE_LENGTH + 2];
int len;
len = strlen(msg) + 1;
packet[0] = P_MESSAGE;
packet[1] = flags;
memcpy(packet + 2, msg, len);
send_packet(packet, len + 2, (struct sockaddr *)(&server), my_id, 0);
}
/* send end of game to server */
void send_keyboard(void)
{
char packet[3];
packet[0]=P_KEYBOARD;
packet[1]=keyboard_status.status;
packet[2]=keyboard_status.weapon;
send_packet(packet,3,(struct sockaddr*)(&server),my_id,0);
}
void reset_keyboard(void)
{
keyboard_status.status=0;
keyboard_status.weapon=0;
}
/* recompute object positions */
void update_game(void)
{
struct object_list *p;
int w,h;
unsigned char stop_x,stop_y,sy;
unsigned long_long t;
int x,y,x1,y1,DELTA_TIME;
for(p=&objects;p->next;p=p->next)
{
if (p->next->member.type==T_NOTHING)
continue;
if (p->next->member.status & S_DEAD)
continue; /* dead player */
/* decrement time to live */
if (p->next->member.ttl>0)
{
p->next->member.ttl--;
if (!p->next->member.ttl)
{
if ((p->next->member.type)==T_PLAYER)
p->next->member.status &= ~S_SHOOTING;
else
{
if (p->next->member.type!=T_GRENADE &&
p->next->member.type!=T_BFGCELL){ /* client's waiting for P_EXPLODE_GRENADE and doesn't delete the grenade yet */
p=p->prev;
delete_obj(p->next->next->member.id);
continue;}
}
}
}
/* maintain only objects that you are allowed to maintain */
if (!(obj_attr[p->next->member.type].maintainer&1))continue;
/* if not falling slow down x motion */
if (!(p->next->member.status & S_FALLING))
p->next->member.xspeed=mul(p->next->member.xspeed,obj_attr[p->next->member.type].slow_down_x);
/* fall */
if (obj_attr[p->next->member.type].fall)
{
p->next->member.status |= S_FALLING;
p->next->member.yspeed+=FALL_ACCEL;
/* but not too fast */
if (p->next->member.yspeed>MAX_Y_SPEED)p->next->member.yspeed=MAX_Y_SPEED;
}
get_dimensions(p->next->member.type,p->next->member.status,sprites[p->next->member.sprite].positions,&w,&h);
x=p->next->member.x;
y=p->next->member.y;
t=get_time();
DELTA_TIME=float2double(((double)(long_long)(t-p->next->member.last_updated))/MICROSECONDS);
update_position(
&(p->next->member),
p->next->member.x+mul(p->next->member.xspeed,DELTA_TIME),
p->next->member.y+mul(p->next->member.yspeed,DELTA_TIME),
w,h,&stop_x,&stop_y);
p->next->member.last_updated=t;
/* walk up the stairs */
if (stop_x&&p->next->member.type==T_PLAYER&&!(p->next->member.status & S_CREEP))
{
x1=p->next->member.x;
y1=p->next->member.y;
p->next->member.x=x;
p->next->member.y=y-int2double(1);
update_position(
&(p->next->member),
p->next->member.x+mul(p->next->member.xspeed,DELTA_TIME),
p->next->member.y+mul(p->next->member.yspeed,DELTA_TIME),
w,h,0,&sy);
if ((p->next->member.xspeed>0&&p->next->member.x<=x1)||(p->next->member.xspeed<0&&p->next->member.x>=x1)) /* restore original values */
{
p->next->member.x=x1;
p->next->member.y=y1;
}
else
{
stop_y=sy;
stop_x=0;
}
}
if (stop_x)
p->next->member.xspeed=-mul(p->next->member.xspeed,obj_attr[p->next->member.type].bounce_x);
if (my_abs(p->next->member.xspeed)<MIN_X_SPEED)
{
p->next->member.xspeed=0;
p->next->member.status &= ~S_WALKING;
}
if (stop_y)
{
p->next->member.yspeed=mul(p->next->member.yspeed,obj_attr[p->next->member.type].bounce_y);
p->next->member.yspeed=-p->next->member.yspeed;
if (my_abs(p->next->member.yspeed)<MIN_Y_SPEED)
{
p->next->member.yspeed=0;
if (stop_y==1)p->next->member.status &= ~S_FALLING;
}
}
if ((p->next->member.type == T_SHRAPNEL || p->next->member.type == T_BULLET ||
p->next->member.type == T_BFGCELL || p->next->member.type == T_CHAIN ||
p->next->member.type == T_JETFIRE) &&
(stop_x || stop_y)) { /* bullet and shrapnel die crashing into wall */
p=p->prev; /* deleting object makes a great mess in for cycle, so we must cheat the cycle */
delete_obj(p->next->next->member.id);
continue;
}
}
}
#define FIRE_SHOOTING weapon[current_weapon].cadence-4+HOLD_GUN_AFTER_SHOOT
/* hero's next anim position when walking to the right */
int _next_anim_right(int pos,int status, int ttl)
{
int start,offset;
if (pos<=18)
start=10; /* normal */
else
{
if (pos<=46)start=(status & S_CHAINSAW)?97:38; /* holding gun */
else
{
if (pos<=55)start=(status & S_CHAINSAW)?106:47; /* shooting */
else start=64; /* creeping */
}
}
offset=pos-start;
if (status & S_CREEP)
start=64; /* creeping */
else
{
if (status & S_SHOOTING)
{
if (ttl>=FIRE_SHOOTING) start=(status & S_CHAINSAW)?106:47; /* shooting */
else start=(status & S_CHAINSAW)?97:38; /* holding a gun */
}
else start=10; /* normal */
}
return (status & S_CREEP)?((offset+1)&7)+start:start+(offset&7)+1;
}
/* hero's next anim position when walking to the left */
int _next_anim_left(int pos,int status, int ttl)
{
int start,offset;
if (pos<=8)start=0; /* normal */
else
{
if (pos<=28)start=(status & S_CHAINSAW)?79:20; /* holding gun */
else
{
if (pos<=37)start=(status & S_CHAINSAW)?88:29; /* shooting */
else start=56; /* creeping */
}
}
offset=pos-start;
if (status & S_CREEP)
start=56; /* creeping */
else
{
if (status & S_SHOOTING)
{
if (ttl>=FIRE_SHOOTING) start=(status & S_CHAINSAW)?88:29; /* shooting */
else start=(status & S_CHAINSAW)?79:20; /* holding a gun */
}
else start=0; /* normal */
}
return (status & S_CREEP)?((offset+1)&7)+start:start+(offset&7)+1;
}
/* update hero animating position */
void update_anim(struct it* obj)
{
if (!(obj->status & S_WALKING)) /* not walking */
switch((obj->status & (S_LOOKLEFT | S_LOOKRIGHT)))
{
case 0: /* look at me */
obj->anim_pos=(obj->status & S_CREEP)?72:9;
break;
case S_LOOKLEFT: /* look left */
if (obj->status & S_SHOOTING)
{
if (obj->status & S_GRENADE)
obj->anim_pos = (obj->ttl>=((weapon[WEAPON_GRENADE].cadence>>1)+HOLD_GUN_AFTER_SHOOT)) ?
73 : (obj->ttl>=((weapon[WEAPON_GRENADE].cadence>>2)+HOLD_GUN_AFTER_SHOOT)) ?
74 : ((obj->ttl>=HOLD_GUN_AFTER_SHOOT) ? 75 : 0);
else if (obj->status & S_CHAINSAW) /* maniak ma motorovku */
obj->anim_pos=(obj->ttl>=FIRE_SHOOTING) ? 88 : 79;
else
obj->anim_pos=(obj->ttl>=FIRE_SHOOTING) ? 29 : 20;
} else
obj->anim_pos=0;
if (obj->status & S_CREEP)
obj->anim_pos=56;
break;
case S_LOOKRIGHT: /* look right */
if (obj->status & S_SHOOTING)
{
if (obj->status & S_GRENADE)
obj->anim_pos = (obj->ttl>=((weapon[WEAPON_GRENADE].cadence>>1)+HOLD_GUN_AFTER_SHOOT)) ?
76 : (obj->ttl>=((weapon[WEAPON_GRENADE].cadence>>2)+HOLD_GUN_AFTER_SHOOT)) ?
77 : ((obj->ttl>=HOLD_GUN_AFTER_SHOOT) ? 78 : 10);
else if (obj->status & S_CHAINSAW) /* maniak ma motorovku */
obj->anim_pos=(obj->ttl>=FIRE_SHOOTING) ? 106 : 97;
else
obj->anim_pos=(obj->ttl>=FIRE_SHOOTING) ? 47 : 38;
} else
obj->anim_pos=10;
if (obj->status & S_CREEP)
obj->anim_pos=64;
break;
}
else /* walking */
{
switch (obj->status & (S_LOOKLEFT | S_LOOKRIGHT))
{
case S_LOOKLEFT: /* walk left */
obj->anim_pos=_next_anim_left(obj->anim_pos,obj->status,obj->ttl);
break;
case S_LOOKRIGHT: /* walk right */
obj->anim_pos=_next_anim_right(obj->anim_pos,obj->status,obj->ttl);
break;
}
}
}
/* draw scene into screenbuffer*/
void draw_scene(void)
{
struct object_list *p;
unsigned char fore;
#ifdef TRI_D
if (TRI_D_ON)
{
tri_d=1;
show_window(double2int(hero->x)-SCREEN_XOFFSET,double2int(hero->y)-SCREEN_YOFFSET);
tri_d=0;
}
#endif
show_window(double2int(hero->x)-SCREEN_XOFFSET,double2int(hero->y)-SCREEN_YOFFSET);
for (fore=0;fore<=1;fore++)
{
for(p=&objects;p->next;p=p->next)
{
if ((obj_attr[p->next->member.type].foreground)!=fore)continue;
if (&(p->next->member)==hero)continue;
if (p->next->member.type==T_PLAYER)update_anim(&(p->next->member));
else {p->next->member.anim_pos++;p->next->member.anim_pos%=sprites[p->next->member.sprite].n_steps;}
if (p->next->member.status == WEAPON_CHAINSAW) continue;
if (!(p->next->member.status & S_DEAD)&&!(p->next->member.status & S_INVISIBLE)) /* don't draw hidden objects and dead players */
{
#ifdef TRI_D
if(TRI_D_ON)
{
tri_d=1;
put_sprite(
double2int(p->next->member.x-hero->x)+fore+SCREEN_XOFFSET,
double2int(p->next->member.y-hero->y)+SCREEN_YOFFSET,
sprites[p->next->member.sprite].positions+sprites[p->next->member.sprite].steps[p->next->member.anim_pos],
1
);
tri_d=0;
}
#endif
put_sprite(
double2int(p->next->member.x-hero->x)+SCREEN_XOFFSET,
double2int(p->next->member.y-hero->y)+SCREEN_YOFFSET,
sprites[p->next->member.sprite].positions+sprites[p->next->member.sprite].steps[p->next->member.anim_pos],
1
);
if (p->next->member.type == T_PLAYER) {
if ((p->next->member.status & S_JETPACK_ON) && !(p->next->member.status & S_CREEP)) {
if (p->next->member.status & S_LOOKRIGHT)
put_sprite(
double2int(p->next->member.x-hero->x)+SCREEN_XOFFSET-1,
double2int(p->next->member.y-hero->y)+SCREEN_YOFFSET+4,
sprites[jetpack_sprite].positions+sprites[jetpack_sprite].steps[1], 1);
else if (p->next->member.status & S_LOOKLEFT)
put_sprite(
double2int(p->next->member.x-hero->x)+SCREEN_XOFFSET+PLAYER_WIDTH-4,
double2int(p->next->member.y-hero->y)+SCREEN_YOFFSET+4,
sprites[jetpack_sprite].positions+sprites[jetpack_sprite].steps[0], 1);
}
if ((gsbi += 10) > 1000) {
gsbi++;
gsbi %= 3;
}
if (p->next->member.status & S_ONFIRE) {
if (p->next->member.status & S_CREEP)
put_sprite(
double2int(p->next->member.x-hero->x)+SCREEN_XOFFSET-5,
double2int(p->next->member.y-hero->y)+SCREEN_YOFFSET-2,
sprites[fire_sprite].positions+sprites[fire_sprite].steps[gsbi % 3 + 3], 1);