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// netvars.cpp — ClientClass walk, RecvTable resolution, movetype from pred-TD
#include "hl2h.h"
// RecvTable layout: pProps@0, nProps@4, pDecoder@8, pNetTableName@0xC
// RecvProp layout: pVarName@0, pArrayProp@0x18, pDataTable@0x28, offset@0x2C
// ClientClass (2004-era): CreateFn@0, CreateEventFn@4, Name@8, RecvTable@0xC, Next@0x10
static bool module_string(uintptr_t p, char *out, size_t outn) {
if (!g_client.contains(p))
return false;
const char *s = (const char *)p;
size_t i = 0;
while (i < outn - 1) {
unsigned char ch = (unsigned char)s[i];
if (ch == 0)
break;
if (ch < 0x20 || ch > 0x7E)
return false;
out[i] = (char)ch;
i++;
}
if (i == 0 || i >= outn - 1)
return false;
out[i] = 0;
return true;
}
static int g_dumped_tables = 0;
static void collect_netvars(uintptr_t table, uintptr_t base_off, int depth) {
if (depth > 8)
return;
uintptr_t props = *(uintptr_t *)(table + 0x00);
int32_t nprops = *(int32_t *)(table + 0x04);
if (!props || !g_client.contains(props) || nprops <= 0 || nprops > 512)
return;
char tname[64];
if (!module_string(*(uintptr_t *)(table + 0x0C), tname, sizeof(tname)))
return;
if (strncmp(tname, "DT_", 3) != 0)
return;
bool dump = g_dumped_tables < 2 &&
(strcmp(tname, "DT_BaseEntity") == 0 ||
strcmp(tname, "DT_BasePlayer") == 0);
if (dump) {
g_dumped_tables++;
logf("dump %s: %d props @ table %#lx (base_off %#lx)", tname, nprops,
(unsigned long)table, (unsigned long)base_off);
}
for (int32_t i = 0; i < nprops; i++) {
uintptr_t prop = props + (size_t)i * 0x3C;
if (!g_client.contains(prop))
return;
uintptr_t pname = *(uintptr_t *)(prop + 0x00);
int32_t ptype = *(int32_t *)(prop + 0x04);
int32_t poff = *(int32_t *)(prop + 0x2C);
uintptr_t parray = *(uintptr_t *)(prop + 0x18);
uintptr_t ptable = *(uintptr_t *)(prop + 0x28);
char pname2[64];
if (!module_string(pname, pname2, sizeof(pname2)))
continue;
if (dump)
logf(" [%s] %s type=%d off=%d(0x%x) table=%s array=%s", tname, pname2,
ptype, poff, poff, ptable ? "yes" : "no", parray ? "yes" : "no");
if (ptable) {
collect_netvars(ptable, base_off + (uint32_t)poff, depth + 1);
continue;
}
if (strcmp(pname2, "m_fFlags") == 0 && g_net.flags < 0) {
g_net.flags = (int)(base_off + (uint32_t)poff);
} else if (strcmp(pname2, "m_vecVelocity") == 0 && g_net.velocity < 0) {
if (parray && g_client.contains(parray)) {
int32_t eoff = *(int32_t *)(parray + 0x2C);
g_net.velocity = (int)(base_off + (uint32_t)(eoff ? eoff : poff));
} else {
g_net.velocity = (int)(base_off + (uint32_t)poff);
}
}
if (g_net.ok())
return;
}
}
// prediction datamap scan for m_MoveType (FIELD_CHARACTER, fieldOffset in range)
static bool resolve_movetype() {
static const char needle[] = "m_MoveType";
const size_t nlen = sizeof(needle);
uintptr_t str_va = 0;
for (auto &r : g_client.ranges) {
const uint8_t *base = (const uint8_t *)r.lo;
size_t span = r.hi - r.lo;
for (size_t i = 0; i + nlen <= span; i++) {
if (memcmp(base + i, needle, nlen) == 0) {
str_va = r.lo + i;
break;
}
}
if (str_va)
break;
}
if (!str_va) {
logf("m_MoveType string not found");
return false;
}
uint32_t offs[16];
int counts[16] = {};
int ncand = 0;
const uint32_t target = (uint32_t)str_va;
for (auto &r : g_client.ranges) {
const uint8_t *base = (const uint8_t *)r.lo;
size_t span = r.hi - r.lo;
for (size_t off = 4; off + 8 <= span; off += 4) {
if (*(const uint32_t *)(base + off) != target)
continue;
uint32_t ftype = *(const uint32_t *)(base + off - 4);
int32_t foff = *(const int32_t *)(base + off + 4);
if (ftype != 8 || foff < 0x40 || foff > 0x400)
continue;
int k;
for (k = 0; k < ncand; k++)
if (offs[k] == (uint32_t)foff)
break;
if (k == ncand && ncand < 16) {
offs[ncand] = (uint32_t)foff;
ncand++;
}
if (k < ncand)
counts[k]++;
}
}
if (ncand == 0) {
logf("m_MoveType typedescription not found");
return false;
}
int best = 0;
for (int k = 1; k < ncand; k++)
if (counts[k] > counts[best])
best = k;
g_net.movetype = (int)offs[best];
return true;
}
void resolve_netvars() {
using GetAllClassesFn = void *(*)(void *);
uintptr_t head =
(uintptr_t)vfunc<GetAllClassesFn>(g_iface.client, 8)(g_iface.client);
if (!g_client.contains(head)) {
logf("GetAllClasses returned %p, outside client module", (void *)head);
return;
}
int classes = 0;
for (uintptr_t cc = head; cc && g_client.contains(cc) && classes < 1024;
cc = *(uintptr_t *)(cc + 0x10)) {
classes++;
char name[64];
if (!module_string(*(uintptr_t *)(cc + 0x08), name, sizeof(name)))
break;
collect_netvars(*(uintptr_t *)(cc + 0x0C), 0, 0);
if (g_net.flags >= 0 && g_net.velocity >= 0)
break;
}
logf("client classes walked: %d", classes);
if (g_net.movetype < 0 && !resolve_movetype()) {
// movetype unresolved — bhop still works, just no noclip/ladder guard
logf("movetype guard disabled");
}
if (g_net.ok()) {
logf("netvars: m_fFlags=+0x%X m_vecVelocity[0]=+0x%X m_MoveType=+0x%X",
g_net.flags, g_net.velocity, g_net.movetype);
} else {
logf("netvar resolution incomplete: flags=%d velocity=%d movetype=%d",
g_net.flags, g_net.velocity, g_net.movetype);
}
}
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