Initial release 1.0.0
Browse Source1.0.0 - Initial release.
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CHANGELOG.md
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README.md
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addons/amxmodx/scripting/csb_wallhack_blocker.sma
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csb.json
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CHANGELOG.md
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| 1 | +## 1.0.0 (2025-07-12) | |
| 2 | + | |
| 3 | +1.0.0 - Initial release. |
README.md
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| 1 | +<p><strong>CSB Wallhack Blocker</strong> defeats most wallhacks and ESP tools by never sending an enemy's position to a client that should not be able to see it. In <code>FM_AddToFullPack</code> the plugin evaluates, for every viewer/enemy pair, whether the enemy is inside the viewer's PVS and whether a traceline from the viewer's eyes reaches the enemy's centre or head. If there is no clear sight line, the enemy is dropped from that client's packet.</p><p>To avoid making legitimate play feel wrong, teammates are always visible and an enemy who has fired within a short grace window is always shown (their position is already given away by the shot).</p><p>Inspired by the classic <code>AddToFullPack</code> wall-blocker technique (Fysiks / OrangeBox). Independent GPL re-implementation.</p><h2>Features</h2><ul><li>PVS check plus dual traceline (body + head) per viewer.</li><li>Fire-grace window keeps recently-shooting enemies visible.</li><li>Teammates never hidden; only living enemy players are filtered.</li><li>Everything is server-side; clients need no changes.</li></ul><h2>Installation</h2><ol><li>Enable the <code>fakemeta</code> module in <code>addons/amxmodx/configs/modules.ini</code>.</li><li>Compile <code>csb_wallhack_blocker.sma</code>, copy it to <code>addons/amxmodx/plugins/</code> and add it to <code>plugins.ini</code>.</li><li>Change the map.</li></ol><p>On very high-population servers the per-packet traceline has a CPU cost; tune <code>csb_wh_firegrace</code> to taste.</p> |
addons/amxmodx/scripting/csb_wallhack_blocker.sma
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| 1 | +/* | |
| 2 | + * CSB Wallhack Blocker | |
| 3 | + * Copyright (C) 2026 counter-strike-boost.com | |
| 4 | + * | |
| 5 | + * Server-side wallhack / ESP protection. In FM_AddToFullPack the plugin decides, | |
| 6 | + * per viewer, whether an enemy player entity is actually visible: it must be in | |
| 7 | + * the viewer's PVS and have a clear line of sight from the viewer's eyes to the | |
| 8 | + * target's centre or head. If neither is clear (and the target has not fired | |
| 9 | + * recently), the entity is dropped from that client's packet, so it cannot be | |
| 10 | + * seen through walls. Teammates and recently-firing enemies are always shown. | |
| 11 | + * | |
| 12 | + * Inspired by the classic AddToFullPack wall blocker approach (Fysiks / | |
| 13 | + * OrangeBox). Independent GPL re-implementation; no original code is reused. | |
| 14 | + * | |
| 15 | + * This program is free software: you can redistribute it and/or modify it under | |
| 16 | + * the terms of the GNU General Public License as published by the Free Software | |
| 17 | + * Foundation, either version 3 of the License, or (at your option) any later | |
| 18 | + * version. It is distributed in the hope that it will be useful, but WITHOUT | |
| 19 | + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS | |
| 20 | + * FOR A PARTICULAR PURPOSE. See <https://www.gnu.org/licenses/> for details. | |
| 21 | + */ | |
| 22 | + | |
| 23 | +#include <amxmodx> | |
| 24 | +#include <fakemeta> | |
| 25 | + | |
| 26 | +new const PLUGIN[] = "CSB Wallhack Blocker" | |
| 27 | +new const VERSION[] = "1.0.0" | |
| 28 | +new const AUTHOR[] = "counter-strike-boost.com" | |
| 29 | + | |
| 30 | +new g_pEnabled, g_pGrace | |
| 31 | +new Float:g_fLastFire[33] | |
| 32 | +new g_iMaxPlayers | |
| 33 | + | |
| 34 | +public plugin_init() | |
| 35 | +{ | |
| 36 | + register_plugin(PLUGIN, VERSION, AUTHOR) | |
| 37 | + | |
| 38 | + g_pEnabled = register_cvar("csb_wh_enabled", "1") | |
| 39 | + g_pGrace = register_cvar("csb_wh_firegrace", "1.2") | |
| 40 | + | |
| 41 | + register_forward(FM_AddToFullPack, "fwAddToFullPack", 0) | |
| 42 | + register_forward(FM_EmitSound, "fwEmitSound", 0) | |
| 43 | + | |
| 44 | + g_iMaxPlayers = get_maxplayers() | |
| 45 | +} | |
| 46 | + | |
| 47 | +public client_putinserver(id) | |
| 48 | +{ | |
| 49 | + g_fLastFire[id] = 0.0 | |
| 50 | +} | |
| 51 | + | |
| 52 | +/* record when a player produces a weapon sound, for the fire grace window */ | |
| 53 | +public fwEmitSound(ent, channel, const sample[]) | |
| 54 | +{ | |
| 55 | + if (ent >= 1 && ent <= g_iMaxPlayers) | |
| 56 | + { | |
| 57 | + if (sample[0] == 'w' && sample[1] == 'e' && containi(sample, "weapons/") == 0) | |
| 58 | + g_fLastFire[ent] = get_gametime() | |
| 59 | + } | |
| 60 | + | |
| 61 | + return FMRES_IGNORED | |
| 62 | +} | |
| 63 | + | |
| 64 | +public fwAddToFullPack(es, e, ent, host, hostflags, player, pSet) | |
| 65 | +{ | |
| 66 | + if (!get_pcvar_num(g_pEnabled)) | |
| 67 | + return FMRES_IGNORED | |
| 68 | + | |
| 69 | + /* only care about player entities being packed for a player host */ | |
| 70 | + if (!player) | |
| 71 | + return FMRES_IGNORED | |
| 72 | + | |
| 73 | + if (ent < 1 || ent > g_iMaxPlayers || host < 1 || host > g_iMaxPlayers) | |
| 74 | + return FMRES_IGNORED | |
| 75 | + | |
| 76 | + if (ent == host) | |
| 77 | + return FMRES_IGNORED | |
| 78 | + | |
| 79 | + if (!is_user_alive(host) || !is_user_alive(ent)) | |
| 80 | + return FMRES_IGNORED | |
| 81 | + | |
| 82 | + /* never hide teammates */ | |
| 83 | + if (get_user_team(host) == get_user_team(ent)) | |
| 84 | + return FMRES_IGNORED | |
| 85 | + | |
| 86 | + /* recently fired -> position is already given away, keep visible */ | |
| 87 | + if (get_gametime() - g_fLastFire[ent] < get_pcvar_float(g_pGrace)) | |
| 88 | + return FMRES_IGNORED | |
| 89 | + | |
| 90 | + /* must be inside the host PVS at all */ | |
| 91 | + if (!engfunc(EngFunc_CheckVisibility, ent, pSet)) | |
| 92 | + return FMRES_SUPERCEDE | |
| 93 | + | |
| 94 | + /* eye position of the viewer */ | |
| 95 | + static Float:fEye[3], Float:fOfs[3] | |
| 96 | + pev(host, pev_origin, fEye) | |
| 97 | + pev(host, pev_view_ofs, fOfs) | |
| 98 | + fEye[0] += fOfs[0] | |
| 99 | + fEye[1] += fOfs[1] | |
| 100 | + fEye[2] += fOfs[2] | |
| 101 | + | |
| 102 | + /* target centre and head */ | |
| 103 | + static Float:fTarget[3], Float:fHead[3], Float:fTOfs[3] | |
| 104 | + pev(ent, pev_origin, fTarget) | |
| 105 | + pev(ent, pev_view_ofs, fTOfs) | |
| 106 | + | |
| 107 | + fHead[0] = fTarget[0] + fTOfs[0] | |
| 108 | + fHead[1] = fTarget[1] + fTOfs[1] | |
| 109 | + fHead[2] = fTarget[2] + fTOfs[2] | |
| 110 | + | |
| 111 | + if (clearLine(fEye, fTarget, host) || clearLine(fEye, fHead, host)) | |
| 112 | + return FMRES_IGNORED | |
| 113 | + | |
| 114 | + /* no clear sight line -> drop from this client's packet */ | |
| 115 | + return FMRES_SUPERCEDE | |
| 116 | +} | |
| 117 | + | |
| 118 | +bool:clearLine(const Float:start[3], const Float:end[3], ignore) | |
| 119 | +{ | |
| 120 | + engfunc(EngFunc_TraceLine, start, end, IGNORE_MONSTERS, ignore, 0) | |
| 121 | + | |
| 122 | + static Float:fFrac | |
| 123 | + get_tr2(0, TR_flFraction, fFrac) | |
| 124 | + | |
| 125 | + return (fFrac >= 1.0) | |
| 126 | +} |
csb.json
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| 1 | +{ | |
| 2 | + "name": "CSB Wallhack Blocker", | |
| 3 | + "category": "anticheat", | |
| 4 | + "tags": "wallhack, esp, blocker", | |
| 5 | + "image": "", | |
| 6 | + "original_author": "Fysiks (AddToFullPack technique)", | |
| 7 | + "original_url": "", | |
| 8 | + "license": "GPL-3.0", | |
| 9 | + "title": "CSB Wallhack Blocker", | |
| 10 | + "short_desc": "Server-side ESP/wallhack protection: hides enemies from a client's packet unless there is a real line of sight.", | |
| 11 | + "version": "1.0.0", | |
| 12 | + "amxx_min": "1.9", | |
| 13 | + "amxx_compile_default": "1.9", | |
| 14 | + "rehlds_ok": true, | |
| 15 | + "hlds_ok": true, | |
| 16 | + "regamedll_required": false, | |
| 17 | + "metamod_flavor": "any", | |
| 18 | + "reapi_required": false, | |
| 19 | + "modules": "fakemeta", | |
| 20 | + "install_notes": "1. Enable the fakemeta module in addons/amxmodx/configs/modules.ini\n2. Put csb_wallhack_blocker.amxx in addons/amxmodx/plugins/ and add it to plugins.ini\n3. Change map", | |
| 21 | + "known_conflicts": "Other plugins that force entity visibility or edit AddToFullPack can fight this one; run only one visibility controller.", | |
| 22 | + "cvars": [ | |
| 23 | + { | |
| 24 | + "name": "csb_wh_enabled", | |
| 25 | + "default": "1", | |
| 26 | + "description": "Enable or disable the wallhack blocker." | |
| 27 | + }, | |
| 28 | + { | |
| 29 | + "name": "csb_wh_firegrace", | |
| 30 | + "default": "1.2", | |
| 31 | + "description": "Seconds an enemy stays visible after firing a weapon." | |
| 32 | + } | |
| 33 | + ], | |
| 34 | + "commands": [], | |
| 35 | + "main": "addons/amxmodx/scripting/csb_wallhack_blocker.sma" | |
| 36 | +} | |
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