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engine_prediction.cpp
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#include "engine_prediction.h"
#include "utils/utils.h"
#include "sdk/sdk.hpp"
#include "interfaces/IConVar.h"
#include "interfaces/ConVar.h"
#include <sdk\csgo.h>
c_prediction_system::c_prediction_system()
{
prediction_random_seed = *reinterpret_cast<uint32_t**>(reinterpret_cast<uint32_t>(utils::get().PatternScan(GetModuleHandle("client.dll"), "A3 ? ? ? ? 66 0F 6E 86")) + 1);
prediction_player = *reinterpret_cast<c_base_player***>(reinterpret_cast<uint32_t>(utils::get().PatternScan(GetModuleHandle("client.dll"), "89 35 ? ? ? ? F3 0F 10 48")) + 2);
_md5_pseudo_random = reinterpret_cast<md5_pseudo_random>(utils::get().PatternScan(GetModuleHandle("client.dll"), "55 8B EC 83 E4 F8 83 EC 70 6A"));
}
/*
void c_prediction_system::initial(c_base_player* local, c_user_cmd* cmd, int32_t seq)
{
static c_move_data data{ };
if (!csgo_data.local)return;
c_base_combat_weapon* weapon = csgo_data.local->get_active_weapon();
if (!weapon)return;
csgo_data.in_prediction = true;
//csgo_data.local->SetCurrentCommand(cmd);
// backup globals.
backup_curtime = g_global_vars->curtime;
backup_frametime = g_global_vars->frametime;
if (!last_cmd || last_cmd->hasbeenpredicted)
seq_diff = seq - local->get_tick_base();
tick_base = max(local->get_tick_base(), seq - seq_diff);
last_cmd = cmd;
// set globals appropriately.
g_global_vars->curtime = ticks_to_time(local->get_tick_base() * g_global_vars->interval_per_tick);
g_global_vars->frametime = g_global_vars->interval_per_tick;
// set target player ( host ).
backup_tickbase = local->get_tick_base();
backup_origin = local->get_origin();
backup_aim_punch = local->get_aim_punch_angle();
//backup_aim_punch_velocity = local->get_punch_angle_vel();
backup_view_offset = local->get_eye_position();
backup_accuracy_penalty = weapon->get_accuracy_penalty();
*prediction_random_seed = _md5_pseudo_random(cmd->command_number) & 0x7FFFFFFF;
// backup flags, velocity and user cmd.
original_cmd = *cmd;
unpredicted_flags = local->get_flags();
unpredicted_velocity = local->get_velocity();
local->run_pre_think();
local->run_think();
memset(&move_data, 0, sizeof(c_move_data));
g_pPrediction->SetupMove(local, cmd, g_pMoveHelper, &move_data);
unpredicted_move_data = move_data;
animation_info[cmd->command_number % 150];
animation_info[cmd->command_number % 150].cmd = cmd;
animation_info[cmd->command_number % 150].curtime = g_global_vars->curtime;
animation_info[cmd->command_number % 150].move_data = unpredicted_move_data;
animation_info[cmd->command_number % 150].flags = local->get_flags();
animation_info[cmd->command_number % 150].ground_entity = local->h_ground_entity();
*prediction_player = local;
move_data = animation_info[cmd->command_number % 150].move_data;
g_global_vars->curtime = animation_info[cmd->command_number % 150].curtime;
*prediction_random_seed = _md5_pseudo_random(cmd->command_number) & 0x7FFFFFFF;
local->get_aim_punch_angle() = backup_aim_punch;
local->get_eye_position() = backup_view_offset;
weapon->get_accuracy_penalty() = backup_accuracy_penalty;
g_pMoveHelper->set_host(local);
g_pMovement->StartTrackPredictionErrors(local);
move_data.forward_move = cmd->forwardmove;
move_data.side_move = cmd->sidemove;
move_data.up_move = cmd->upmove;
move_data.buttons = cmd->buttons;
move_data.view_angles = cmd->viewangles;
move_data.angles = cmd->viewangles;
move_data.impulse_command = cmd->impulse;
g_pPrediction->SetupMove(local, cmd, g_pMoveHelper, &data);
g_pPrediction->FinishMove(local, animation_info[cmd->command_number % 150].cmd, &move_data);
local->get_flags() = animation_info[cmd->command_number % 150].flags;
local->h_ground_entity() = animation_info[cmd->command_number % 150].ground_entity;
g_pMovement->ProcessMovement(local, &move_data);
local->get_tick_base() = backup_tickbase;
local->get_velocity() = (local->get_origin() - backup_origin) * (1.f / g_global_vars->interval_per_tick);
g_pMoveHelper->unknown_func();
g_pMovement->FinishTrackPredictionErrors(local);
g_pMoveHelper->set_host(nullptr);
weapon->UpdateAccuracyPenalty();
// finish movement.
prediction()->finish_move(local, cmd, &move_data);
// run movement.
g_pMovement->ProcessMovement(local, &data);
g_pPrediction->FinishMove(local, cmd, &data);
g_pMovement->FinishTrackPredictionErrors(local);
// reset target player ( host ).
g_pMoveHelper->set_host(nullptr);
}*/
void c_prediction_system::initial(c_base_player* local, c_user_cmd* cmd, int32_t seq)
{
if (!local)return;
c_base_combat_weapon* weapon = local->get_active_weapon();
if (!weapon)return;
weapon->UpdateAccuracyPenalty();
static c_move_data data{ };
csgo_data.in_prediction = true;
// CPrediction::StartCommand
c_user_cmd* buffer = csgo_data.local->get_current_command();
buffer = cmd;
// backup globals.
backup_curtime = g_global_vars->curtime;
backup_frametime = g_global_vars->frametime;
// CPrediction::RunCommand
// set globals appropriately.
g_global_vars->curtime = ticks_to_time(local->get_tick_base() * g_global_vars->interval_per_tick);
g_global_vars->frametime = g_global_vars->interval_per_tick;
// set target player ( host ).
*prediction_random_seed = _md5_pseudo_random(cmd->command_number) & 0x7FFFFFFF;
g_pPrediction->SetupMove(local, cmd, g_pMoveHelper, &data);
g_pMoveHelper->set_host(local);
g_pMovement->StartTrackPredictionErrors(local);
move_data.forward_move = cmd->forwardmove;
move_data.side_move = cmd->sidemove;
move_data.up_move = cmd->upmove;
move_data.buttons = cmd->buttons;
move_data.view_angles = cmd->viewangles;
move_data.angles = cmd->viewangles;
move_data.impulse_command = cmd->impulse;
// setup input.
// run movement.
g_pMovement->ProcessMovement(local, &data);
g_pPrediction->FinishMove(local, cmd, &data);
g_pMovement->FinishTrackPredictionErrors(local);
// reset target player ( host ).
g_pMoveHelper->set_host(nullptr);
}
void c_prediction_system::repredict(c_base_player* local, c_user_cmd* cmd)
{
//static const auto sv_footsteps = g_Cvar->FindVar("sv_footsteps");
/*const auto weapon = local->get_m_hActiveWeapon();
if (!weapon)return;
// backup footsteps.
//const auto backup_footsteps = sv_footsteps->GetInt();
//sv_footsteps->AddFlags(1 << 14) &= ~(1 << 14); // FCVAR_CHEAT
//sv_footsteps->flags &= ~(1 << 8); // FCVAR_NOTIFY
//sv_footsteps->SetValue(0);
// select correct data.
move_data = animation_info[cmd->command_number % 150].move_data;
g_GlobalVars->curtime = animation_info[cmd->command_number % 150].curtime;
// setup prediction parameters.
*prediction_random_seed = _md5_pseudo_random(cmd->command_number) & 0x7FFFFFFF; // error here / FIX ME /
// set player data.
local->set_aim_punch(backup_aim_punch);
local->set_eye_pos(backup_view_offset);
//weapon->get_accuracy_penalty() = backup_accuracy_penalty;
//weapon->get_recoil_index() = backup_recoil_index;
//local->get_duck_amount() = backup_duck_amount;
// start of prediction.
g_pMoveHelper->set_host(local);
g_pMovement->StartTrackPredictionErrors(local);
// correct move data.
move_data.forward_move = cmd->forwardmove;
move_data.side_move = cmd->sidemove;
move_data.up_move = cmd->upmove;
move_data.buttons = cmd->buttons;
move_data.view_angles = cmd->viewangles;
move_data.angles = cmd->viewangles;
move_data.impulse_command = cmd->impulse;
// restore player state.
g_pPrediction->FinishMove(local, animation_info[cmd->command_number % 150].cmd, &move_data);
local->set_flags(animation_info[cmd->command_number % 150].flags);
//local->get_ground_entity() = animation_info[cmd->command_number % 150].ground_entity;
// run movement.
g_pMovement->ProcessMovement(local, &move_data);
// finish movement.
g_pPrediction->FinishMove(local, cmd, &move_data);
// correct player data.
local->set_tick_base( backup_tickbase);
local->get_velocity() = (local->get_origin() - backup_origin) * (1.f / g_GlobalVars->interval_per_tick);
// end of prediction.
g_pMoveHelper->unknown_func();
g_pMovement->FinishTrackPredictionErrors(local);
g_pMoveHelper->set_host(nullptr);
// update weapon accuracy.
// weapon->update_accuracy();
// restore footsteps.
//sv_footsteps->SetValue(backup_footsteps);*/
}
void c_prediction_system::restore() const
{
if (!csgo_data.cmd || !csgo_data.local)
return;
*prediction_random_seed = -1;
*prediction_player = nullptr;
g_global_vars->curtime = backup_curtime;
g_global_vars->frametime = backup_frametime;
}