// client processing of the incoming network stream
#include "cube.h"
#import "DynamicEntity.h"
extern int clientnum;
extern bool c2sinit, senditemstoserver;
extern OFString *toservermap;
extern OFString *clientpassword;
void
neterr(OFString *s)
{
conoutf(@"illegal network message (%@)", s);
disconnect();
}
void
changemapserv(OFString *name, int mode) // forced map change from the server
{
gamemode = mode;
load_world(name);
}
void
changemap(OFString *name) // request map change, server may ignore
{
toservermap = name;
}
// update the position of other clients in the game in our world
// don't care if he's in the scenery or other players,
// just don't overlap with our client
void
updatepos(DynamicEntity *d)
{
const float r = player1.radius + d.radius;
const float dx = player1.o.x - d.o.x;
const float dy = player1.o.y - d.o.y;
const float dz = player1.o.z - d.o.z;
const float rz = player1.aboveeye + d.eyeheight;
const float fx = (float)fabs(dx), fy = (float)fabs(dy),
fz = (float)fabs(dz);
if (fx < r && fy < r && fz < rz && d.state != CS_DEAD) {
if (fx < fy)
// push aside
d.o = OFMakeVector3D(d.o.x,
d.o.y + (dy < 0 ? r - fy : -(r - fy)), d.o.z);
else
d.o = OFMakeVector3D(
d.o.x + (dx < 0 ? r - fx : -(r - fx)), d.o.y,
d.o.z);
}
int lagtime = lastmillis - d.lastupdate;
if (lagtime) {
d.plag = (d.plag * 5 + lagtime) / 6;
d.lastupdate = lastmillis;
}
}
// processes any updates from the server
void
localservertoclient(uchar *buf, int len)
{
if (ENET_NET_TO_HOST_16(*(ushort *)buf) != len)
neterr(@"packet length");
incomingdemodata(buf, len);
uchar *end = buf + len;
uchar *p = buf + 2;
char text[MAXTRANS];
int cn = -1, type;
DynamicEntity *d = nil;
bool mapchanged = false;
while (p < end)
switch (type = getint(p)) {
case SV_INITS2C: // welcome messsage from the server
{
cn = getint(p);
int prot = getint(p);
if (prot != PROTOCOL_VERSION) {
conoutf(@"you are using a different game "
@"protocol (you: %d, server: %d)",
PROTOCOL_VERSION, prot);
disconnect();
return;
}
toservermap = @"";
clientnum = cn; // we are now fully connected
if (!getint(p))
// we are the first client on this server, set
// map
toservermap = getclientmap();
sgetstr();
@autoreleasepool {
if (text[0] &&
strcmp(text, clientpassword.UTF8String)) {
conoutf(@"you need to set the correct "
@"password "
@"to join this server!");
disconnect();
return;
}
}
if (getint(p) == 1)
conoutf(@"server is FULL, disconnecting..");
break;
}
case SV_POS: {
// position of another client
cn = getint(p);
d = getclient(cn);
if (d == nil)
return;
d.o = OFMakeVector3D(
getint(p) / DMF, getint(p) / DMF, getint(p) / DMF);
d.yaw = getint(p) / DAF;
d.pitch = getint(p) / DAF;
d.roll = getint(p) / DAF;
d.vel = OFMakeVector3D(
getint(p) / DVF, getint(p) / DVF, getint(p) / DVF);
int f = getint(p);
d.strafe = (f & 3) == 3 ? -1 : f & 3;
f >>= 2;
d.move = (f & 3) == 3 ? -1 : f & 3;
d.onfloor = (f >> 2) & 1;
int state = f >> 3;
if (state == CS_DEAD && d.state != CS_DEAD)
d.lastaction = lastmillis;
d.state = state;
if (!demoplayback)
updatepos(d);
break;
}
case SV_SOUND: {
OFVector3D loc = d.o;
playsound(getint(p), &loc);
break;
}
case SV_TEXT:
sgetstr();
conoutf(@"%@:\f %s", d.name, text);
break;
case SV_MAPCHANGE:
sgetstr();
@autoreleasepool {
changemapserv(@(text), getint(p));
}
mapchanged = true;
break;
case SV_ITEMLIST: {
int n;
if (mapchanged) {
senditemstoserver = false;
resetspawns();
}
while ((n = getint(p)) != -1)
if (mapchanged)
setspawn(n, true);
break;
}
case SV_MAPRELOAD: // server requests next map
{
getint(p);
OFString *nextmapalias = [OFString
stringWithFormat:@"nextmap_%@", getclientmap()];
OFString *map =
getalias(nextmapalias); // look up map in the cycle
changemap(map != nil ? map : getclientmap());
break;
}
// another client either connected or changed name/team
case SV_INITC2S: {
sgetstr();
if (d.name.length > 0) {
// already connected
if (![d.name isEqual:@(text)])
conoutf(@"%@ is now known as %s",
d.name, text);
} else {
// new client
// send new players my info again
c2sinit = false;
conoutf(@"connected: %s", text);
}
d.name = @(text);
sgetstr();
d.team = @(text);
d.lifesequence = getint(p);
break;
}
case SV_CDIS:
cn = getint(p);
if ((d = getclient(cn)) == nil)
break;
conoutf(@"player %@ disconnected",
d.name.length ? d.name : @"[incompatible client]");
players[cn] = [OFNull null];
break;
case SV_SHOT: {
int gun = getint(p);
OFVector3D s, e;
s.x = getint(p) / DMF;
s.y = getint(p) / DMF;
s.z = getint(p) / DMF;
e.x = getint(p) / DMF;
e.y = getint(p) / DMF;
e.z = getint(p) / DMF;
if (gun == GUN_SG)
createrays(s, e);
shootv(gun, s, e, d);
break;
}
case SV_DAMAGE: {
int target = getint(p);
int damage = getint(p);
int ls = getint(p);
if (target == clientnum) {
if (ls == player1.lifesequence)
selfdamage(damage, cn, d);
} else {
OFVector3D loc = getclient(target).o;
playsound(S_PAIN1 + rnd(5), &loc);
}
break;
}
case SV_DIED: {
int actor = getint(p);
if (actor == cn) {
conoutf(@"%@ suicided", d.name);
} else if (actor == clientnum) {
int frags;
if (isteam(player1.team, d.team)) {
frags = -1;
conoutf(@"you fragged a teammate (%@)",
d.name);
} else {
frags = 1;
conoutf(@"you fragged %@", d.name);
}
addmsg(
1, 2, SV_FRAGS, (player1.frags += frags));
} else {
DynamicEntity *a = getclient(actor);
if (a != nil) {
if (isteam(a.team, d.name))
conoutf(@"%@ fragged his "
@"teammate (%@)",
a.name, d.name);
else
conoutf(@"%@ fragged %@",
a.name, d.name);
}
}
OFVector3D loc = d.o;
playsound(S_DIE1 + rnd(2), &loc);
d.lifesequence++;
break;
}
case SV_FRAGS:
[players[cn] setFrags:getint(p)];
break;
case SV_ITEMPICKUP:
setspawn(getint(p), false);
getint(p);
break;
case SV_ITEMSPAWN: {
uint i = getint(p);
setspawn(i, true);
if (i >= (uint)ents.length())
break;
OFVector3D v =
OFMakeVector3D(ents[i].x, ents[i].y, ents[i].z);
playsound(S_ITEMSPAWN, &v);
break;
}
case SV_ITEMACC: // server acknowledges that I picked up this
// item
realpickup(getint(p), player1);
break;
case SV_EDITH: // coop editing messages, should be extended to
// include all possible editing ops
case SV_EDITT:
case SV_EDITS:
case SV_EDITD:
case SV_EDITE: {
int x = getint(p);
int y = getint(p);
int xs = getint(p);
int ys = getint(p);
int v = getint(p);
block b = { x, y, xs, ys };
switch (type) {
case SV_EDITH:
editheightxy(v != 0, getint(p), b);
break;
case SV_EDITT:
edittexxy(v, getint(p), b);
break;
case SV_EDITS:
edittypexy(v, b);
break;
case SV_EDITD:
setvdeltaxy(v, b);
break;
case SV_EDITE:
editequalisexy(v != 0, b);
break;
}
break;
}
case SV_EDITENT: // coop edit of ent
{
uint i = getint(p);
while ((uint)ents.length() <= i)
ents.add().type = NOTUSED;
int to = ents[i].type;
ents[i].type = getint(p);
ents[i].x = getint(p);
ents[i].y = getint(p);
ents[i].z = getint(p);
ents[i].attr1 = getint(p);
ents[i].attr2 = getint(p);
ents[i].attr3 = getint(p);
ents[i].attr4 = getint(p);
ents[i].spawned = false;
if (ents[i].type == LIGHT || to == LIGHT)
calclight();
break;
}
case SV_PING:
getint(p);
break;
case SV_PONG:
addmsg(0, 2, SV_CLIENTPING,
player1.ping =
(player1.ping * 5 + lastmillis - getint(p)) /
6);
break;
case SV_CLIENTPING:
[players[cn] setPing:getint(p)];
break;
case SV_GAMEMODE:
nextmode = getint(p);
break;
case SV_TIMEUP:
timeupdate(getint(p));
break;
case SV_RECVMAP: {
sgetstr();
conoutf(@"received map \"%s\" from server, reloading..",
text);
int mapsize = getint(p);
@autoreleasepool {
OFString *string = @(text);
writemap(string, mapsize, p);
p += mapsize;
changemapserv(string, gamemode);
}
break;
}
case SV_SERVMSG:
sgetstr();
conoutf(@"%s", text);
break;
case SV_EXT: // so we can messages without breaking previous
// clients/servers, if necessary
{
for (int n = getint(p); n; n--)
getint(p);
break;
}
default:
neterr(@"type");
return;
}
}