sm-plugins/BlockNosteamBhop/scripting/bhop_limit_nosteamers.sp

#include <PlayerManager>
#pragma semicolon 1
  
#define DEBUG

#define PLUGIN_AUTHOR "jenz"
#define PLUGIN_VERSION "1.0"
#define generic_length 256

#include <sourcemod>
#include <sdktools>

public Plugin myinfo =
{
        name = "nosteam bhop blocker",
        author = PLUGIN_AUTHOR,
        description = "no more bhop for meatbags ",
        version = PLUGIN_VERSION,
        url = ""
};

bool bhop_restricted_nosteamer[MAXPLAYERS + 1];
int buttons_old[MAXPLAYERS + 1];
int flags_old[MAXPLAYERS + 1];

public void OnPluginStart()
{
	for (int i = 1; i <= MAXPLAYERS; i++)
	{
		if (IsValidClient(i))
			OnClientPostAdminCheck(i);
	}
}

stock bool IsValidClient(int client)
{
        if (client > 0 && client <= MaxClients && IsClientConnected(client) && IsClientInGame(client))
                return true;
        return false;
}

public void OnClientDisconnect(int client)
{
	bhop_restricted_nosteamer[client] = false;
	buttons_old[client] = 0;
	flags_old[client] = 0;
}

public void OnClientPostAdminCheck(int client)
{
	if (!IsFakeClient(client) && !IsClientSourceTV(client) && !PM_IsPlayerSteam(client))
	{
		bhop_restricted_nosteamer[client] = true;
		buttons_old[client] = 0;
		flags_old[client] = 0;
	}
}

public void OnPlayerRunCmdPost(int client, int buttons, int impulse, const float vel[3], const float angles[3], int weapon, int subtype,
                                                                int cmdnum, int tickcount, int seed, const int mouse[2])
{
        if (!IsValidClient(client) || !IsPlayerAlive(client) || !bhop_restricted_nosteamer[client]) return;
	if (!(buttons_old[client] & IN_JUMP) && (!(buttons & IN_JUMP)))
	{
		flags_old[client] = GetEntityFlags(client);
		return;
	}
	if (buttons_old[client] & IN_JUMP)
	{
		if (!(buttons & IN_JUMP))
			if (GetEntityFlags(client) & FL_ONGROUND)
				buttons_old[client] = buttons;
		return;
	}
	if (!(flags_old[client] & FL_ONGROUND))
		return;
	float vVel[3];
	GetEntPropVector(client, Prop_Data, "m_vecVelocity", vVel);
	float fVelocity = SquareRoot(Pow(vVel[0], 2.0) + Pow(vVel[1], 2.0));
	float velocity_block[3];
	velocity_block[0] = vel[0];
	velocity_block[1] = vel[1];
	velocity_block[2] = vel[2];
	velocity_block[1] = 0.0;
	if (fVelocity > 320.0)
	{
		TeleportEntity(client, NULL_VECTOR, NULL_VECTOR, velocity_block);
	}
	buttons_old[client] = buttons;
}