diff --git a/include/cstrike/Classes/CInput.h b/include/cstrike/Classes/CInput.h
index b2049b4..c98f101 100644
--- a/include/cstrike/Classes/CInput.h
+++ b/include/cstrike/Classes/CInput.h
@@ -1,10 +1,111 @@
 #pragma once
 
+#define MAX_SPLITSCREEN_PLAYERS 1
+
+enum MouseParams: int {
+	MOUSE_ACCEL_THRESHHOLD1 = 0,
+	MOUSE_ACCEL_THRESHHOLD2,
+	MOUSE_SPEED_FACTOR,
+	NUM_MOUSE_PARAMS
+};
+
+enum JoystickAxis_t {
+	JOY_AXIS_X = 0,
+	JOY_AXIS_Y,
+	JOY_AXIS_Z,
+	JOY_AXIS_R,
+	JOY_AXIS_U,
+	JOY_AXIS_V,
+	MAX_JOYSTICK_AXES,
+};
+
+typedef struct {
+	unsigned int AxisFlags;
+	unsigned int AxisMap;
+	unsigned int ControlMap;
+} joy_axis_t;
+
+struct Split_t {
+	int m_nDown[2];
+	int m_nState;
+};
+
+struct kbutton_t {
+	Split_t m_PerUser[MAX_SPLITSCREEN_PLAYERS];
+};
+
+class CKeyboardKey {
+	public:
+		char m_szName[32];
+		kbutton_t* m_pKey;
+		CKeyboardKey* m_pNext;
+};
+
 class CUserCmd;
+class CVerifiedUserCmd;
 
 class CInput {
+	private:
+		virtual ~CInput(void) {};
 	public:
-		CUserCmd* GetUserCmd(int index) {
-			return GetVirtualFunction<CUserCmd*(*)(CInput*, int)>(this, 8)(this, index);
+		bool m_fMouseInitialized;
+		bool m_fMouseActive;
+		bool m_fJoystickAdvancedInit;
+		bool m_fHadJoysticks;
+
+		float m_flAccumulatedMouseXMovement;
+		float m_flAccumulatedMouseYMovement;
+		float m_flPreviousMouseXPosition;
+		float m_flPreviousMouseYPosition;
+		float m_flRemainingJoystickSampleTime;
+		float m_flKeyboardSampleTime;
+
+		bool m_fRestoreSPI;
+		int m_rgOrigMouseParms[NUM_MOUSE_PARAMS];
+		int m_rgNewMouseParms[NUM_MOUSE_PARAMS];
+		bool m_rgCheckMouseParam[NUM_MOUSE_PARAMS];
+		bool m_fMouseParmsValid;
+
+		joy_axis_t m_rgAxes[MAX_JOYSTICK_AXES];
+		CKeyboardKey* m_pKeys;
+
+		bool m_fCameraInterceptingMouse;
+		bool m_fCameraInThirdPerson;
+		bool m_fCameraMovingWithMouse;
+
+		bool m_fCameraDistanceMove;
+
+		int m_nCameraOldX;
+		int m_nCameraOldY;
+		int m_nCameraX;
+		int m_nCameraY;
+
+		bool m_CameraIsOrthographic;
+
+		QAngle m_angPreviousViewAngles;
+
+		float m_flLastForwardMove;
+
+		float m_flPreviousJoystickForward;
+		float m_flPreviousJoystickSide;
+		float m_flPreviousJoystickPitch;
+		float m_flPreviousJoystickYaw;
+
+		CUserCmd* m_pCommands;
+		CVerifiedUserCmd* m_pVerifiedCommands;
+
+		inline CUserCmd* GetUserCmd(int sequence) {
+			return &this->m_pCommands[sequence % MULTIPLAYER_BACKUP];
+		}
+
+		inline CVerifiedUserCmd* GetVerifiedUserCmd(int sequence) {
+			return &this->m_pVerifiedCommands[sequence % MULTIPLAYER_BACKUP];
+		}
+
+		inline void VerifyUserCmd(CUserCmd* cmd, int sequence) {
+			CVerifiedUserCmd* cmd_verified = this->GetVerifiedUserCmd(sequence);
+
+			cmd_verified->m_cmd = *cmd;
+			cmd_verified->m_crc = cmd->GetChecksum();
 		}
 };
\ No newline at end of file
diff --git a/include/cstrike/Classes/CUserCmd.h b/include/cstrike/Classes/CUserCmd.h
index 537c3fa..dc243c0 100644
--- a/include/cstrike/Classes/CUserCmd.h
+++ b/include/cstrike/Classes/CUserCmd.h
@@ -18,6 +18,30 @@ class CUserCmd {
 		short mousedx;
 		short mousedy;
 		bool hasbeenpredicted;
+
+		inline CRC32_t GetChecksum() {
+			CRC32_t crc;
+
+			CRC32_Init(&crc);
+
+			CRC32_ProcessBuffer(&crc, &this->command_number, sizeof(this->command_number));
+			CRC32_ProcessBuffer(&crc, &this->tick_count, sizeof(this->tick_count));
+			CRC32_ProcessBuffer(&crc, &this->viewangles, sizeof(this->viewangles));
+			CRC32_ProcessBuffer(&crc, &this->forwardmove, sizeof(this->forwardmove));
+			CRC32_ProcessBuffer(&crc, &this->sidemove, sizeof(this->sidemove));
+			CRC32_ProcessBuffer(&crc, &this->upmove, sizeof(this->upmove));
+			CRC32_ProcessBuffer(&crc, &this->buttons, sizeof(this->buttons));
+			CRC32_ProcessBuffer(&crc, &this->impulse, sizeof(this->impulse));
+			CRC32_ProcessBuffer(&crc, &this->weaponselect, sizeof(this->weaponselect));
+			CRC32_ProcessBuffer(&crc, &this->weaponsubtype, sizeof(this->weaponsubtype));
+			CRC32_ProcessBuffer(&crc, &this->random_seed, sizeof(this->random_seed));
+			CRC32_ProcessBuffer(&crc, &this->mousedx, sizeof(this->mousedx));
+			CRC32_ProcessBuffer(&crc, &this->mousedy, sizeof(this->mousedy));
+
+			CRC32_Final(&crc);
+
+			return crc;
+		}
 };
 
 class CVerifiedUserCmd {
diff --git a/include/cstrike/Definitions/Const.h b/include/cstrike/Definitions/Const.h
index 247702e..02ef0b1 100644
--- a/include/cstrike/Definitions/Const.h
+++ b/include/cstrike/Definitions/Const.h
@@ -1,5 +1,7 @@
 #pragma once
 
+#define MULTIPLAYER_BACKUP 90
+
 #define SIGNED_GUID_LEN 32
 
 #define MAX_PLAYER_NAME_LENGTH 32