Overview The c_user_cmd class represents a single user command that contains all input data for a tick. This is the primary structure used in CreateMove hooks to manipulate player input, view angles, movement, and button states.
User commands are validated with CRC32 checksums to prevent tampering. Always recalculate the checksum after modifying command data.
Class Definition Location: game/sdk/classes/c_usercmd.h:12
class c_user_cmd { public: inline CRC32_t checksum (); virtual ~c_user_cmd (); int command_number; int tick_count; math ::vec3 view_angles; math ::vec3 aim_direction; float forward_move; float side_move; float up_move; sdk :: int_flag_t buttons; char impulse; int weapon_select; int weapon_subtype; int random_seed; short moused_x; short moused_y; bool has_been_predicted; };
Members Command Identification Unique identifier for this command. Increments with each tick.
Server tick when this command was created.
View & Aim Player’s view angles (pitch, yaw, roll). Modified for aimbot functionality.
X (pitch): -89.0 to 89.0 degrees
Y (yaw): -180.0 to 180.0 degrees
Z (roll): typically 0.0
Forward aim vector derived from view angles.
Movement Forward/backward movement speed. Range: -450.0 to 450.0
Left/right strafe movement speed. Range: -450.0 to 450.0
Jump/crouch movement. Typically 0.0, 320.0 (jump), or -320.0 (crouch).
Bitfield of pressed buttons (IN_ATTACK, IN_JUMP, IN_DUCK, etc.).
Impulse commands for special actions.
Weapon entity index to switch to.
Weapon subtype for multi-variant weapons.
Mouse & Randomization Mouse delta X for this tick.
Mouse delta Y for this tick.
Synchronized random seed for prediction. Generated from MD5 hash of command.
Prediction Flag indicating if this command has been run through prediction.
Methods checksum() Calculates CRC32 checksum of the command data for validation.
Location: game/sdk/classes/c_usercmd.h:15
inline CRC32_t checksum () { CRC32_t crc; CRC32_Init ( & crc); CRC32_ProcessBuffer ( & crc, & command_number, sizeof (command_number)); CRC32_ProcessBuffer ( & crc, & tick_count, sizeof (tick_count)); CRC32_ProcessBuffer ( & crc, & view_angles, sizeof (view_angles)); CRC32_ProcessBuffer ( & crc, & aim_direction, sizeof (aim_direction)); CRC32_ProcessBuffer ( & crc, & forward_move, sizeof (forward_move)); CRC32_ProcessBuffer ( & crc, & side_move, sizeof (side_move)); CRC32_ProcessBuffer ( & crc, & up_move, sizeof (up_move)); CRC32_ProcessBuffer ( & crc, & buttons, sizeof (buttons)); CRC32_ProcessBuffer ( & crc, & impulse, sizeof (impulse)); CRC32_ProcessBuffer ( & crc, & weapon_select, sizeof (weapon_select)); CRC32_ProcessBuffer ( & crc, & weapon_subtype, sizeof (weapon_subtype)); CRC32_ProcessBuffer ( & crc, & random_seed, sizeof (random_seed)); CRC32_ProcessBuffer ( & crc, & moused_x, sizeof (moused_x)); CRC32_ProcessBuffer ( & crc, & moused_y, sizeof (moused_y)); CRC32_Final ( & crc); return crc; }
CRC32 checksum value for validation.
Usage Examples CreateMove Hook - Basic Aimbot Basic Aimbot
Bunny Hop
Movement Correction
void __stdcall create_move_hook ( int sequence_number , float input_sample_time , bool active ) { auto cmd = g_input -> get_user_cmd (sequence_number); if ( ! cmd || ! cmd -> command_number ) return ; auto local_player = g_entity_list -> get_client_entity ( g_engine -> get_local_player ()); if ( ! local_player || ! local_player -> is_alive ()) return ; // Find target auto target = find_best_target (local_player); if (target) { // Calculate aim angles math ::vec3 aim_angles = calculate_angle ( local_player -> get_eye_position (), target -> get_hitbox_position (HITBOX_HEAD)); // Set view angles cmd -> view_angles = aim_angles; // Auto-fire when aimed at target cmd -> buttons |= IN_ATTACK; } }
// Check if button is pressed if ( cmd -> buttons & IN_ATTACK) { // Attack button is pressed } // Add button press cmd -> buttons |= IN_DUCK; // Force crouch // Remove button press cmd -> buttons &= ~ IN_JUMP; // Cancel jump // Toggle button cmd -> buttons ^= IN_ATTACK2; // Toggle alt-fire
Prediction Integration void run_prediction ( c_user_cmd * cmd ) { if ( cmd -> has_been_predicted ) return ; // Set random seed for synchronized prediction * g_prediction_seed = cmd -> random_seed ; // Run prediction g_prediction -> setup_move (local_player, cmd, move_helper, move_data); g_game_movement -> process_movement (local_player, move_data); g_prediction -> finish_move (local_player, cmd, move_data); cmd -> has_been_predicted = true ; }
c_input - Input manager that stores user commandsc_client_state - Client state with command timing information