Flags spinbot/anti-aim from impossible yaw rotation speed or an illegal pitch outside -89..89.
csb_spinbot_detect.sma v1.0.0
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/*
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* CSB Spinbot Detection
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* Copyright (C) 2026 counter-strike-boost.com
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*
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* Samples pev_v_angle each frame and flags spinbot / anti-aim: a yaw that
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* rotates faster than a human can move the mouse, or a pitch outside the legal
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* -89..89 range, over several sustained frames.
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*
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* This program is free software: you can redistribute it and/or modify it under
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* the terms of the GNU General Public License as published by the Free Software
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* Foundation, either version 3 of the License, or (at your option) any later
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* version. It is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See <https://www.gnu.org/licenses/> for details.
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*/
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#include <amxmodx>
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#include <fakemeta>
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new const PLUGIN[] = "CSB Spinbot Detection"
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new const VERSION[] = "1.0.0"
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new const AUTHOR[] = "counter-strike-boost.com"
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new g_pEnabled, g_pMaxYaw, g_pStrikes, g_pAction
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new Float:g_fLastYaw[33]
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new bool:g_bHasLast[33]
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new g_iStrikes[33]
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public plugin_init()
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{
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register_plugin(PLUGIN, VERSION, AUTHOR)
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g_pEnabled = register_cvar("csb_spin_enabled", "1")
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g_pMaxYaw = register_cvar("csb_spin_maxyaw", "50.0")
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g_pStrikes = register_cvar("csb_spin_strikes", "10")
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g_pAction = register_cvar("csb_spin_action", "0")
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register_forward(FM_PlayerPreThink, "fwPreThink")
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}
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public client_putinserver(id)
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{
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g_bHasLast[id] = false
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g_iStrikes[id] = 0
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}
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public fwPreThink(id)
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{
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if (!get_pcvar_num(g_pEnabled) || !is_user_alive(id) || is_user_bot(id))
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return FMRES_IGNORED
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new Float:angles[3]
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pev(id, pev_v_angle, angles)
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new bool:bad = false
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new reason[24]
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// legal pitch is clamped to [-89, 89]; anything beyond is a hack angle
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if (angles[0] > 89.5 || angles[0] < -89.5)
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{
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bad = true
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copy(reason, charsmax(reason), "illegal pitch")
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}
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else if (g_bHasLast[id])
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{
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new Float:delta = angles[1] - g_fLastYaw[id]
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// normalise to the shortest signed turn
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while (delta > 180.0) delta -= 360.0
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while (delta < -180.0) delta += 360.0
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if (delta < 0.0)
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delta = -delta
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if (delta > get_pcvar_float(g_pMaxYaw))
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{
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bad = true
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copy(reason, charsmax(reason), "impossible yaw speed")
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}
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}
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g_fLastYaw[id] = angles[1]
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g_bHasLast[id] = true
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if (bad)
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{
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g_iStrikes[id]++
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if (g_iStrikes[id] >= get_pcvar_num(g_pStrikes))
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{
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flag(id, reason)
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g_iStrikes[id] = 0
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}
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}
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else if (g_iStrikes[id] > 0)
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{
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g_iStrikes[id]--
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}
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return FMRES_IGNORED
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}
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flag(id, const reason[])
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{
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new name[32], authid[35]
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get_user_name(id, name, charsmax(name))
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get_user_authid(id, authid, charsmax(authid))
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log_amx("[CSB Spinbot] %s <%s> flagged: %s", name, authid, reason)
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if (get_pcvar_num(g_pAction) == 1)
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{
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server_cmd("kick #%d ^"CSB: spinbot / anti-aim detected^"", get_user_userid(id))
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server_exec()
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}
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else
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{
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client_print(0, print_chat, "[CSB] %s is suspected of using spinbot / anti-aim (%s).", name, reason)
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}
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}
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