A fuel-limited jetpack: hold +jetpack to fly along your aim with lift and a thrust light, drain a fuel bar, and refill it on the ground. Access can be flag-restricted.
csb_jetpack.sma v1.0.0
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/*
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* CSB Jetpack
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* Copyright (C) 2026 counter-strike-boost.com
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*
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* A fuel-limited jetpack. Bind a key to +jetpack: while held, the player is
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* pushed along their aim direction with a little lift, a thrust light burns at
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* their feet and the fuel bar drains. Standing on the ground refills the fuel.
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* Access can be restricted to a flag so it becomes a VIP perk.
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*
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* Inspired by VEN's classic Jetpack plugin for AMX Mod X. This is an
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* independent GPL re-implementation; no original code is reused.
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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 <amxmisc>
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#include <fakemeta>
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#include <fun>
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new const PLUGIN[] = "CSB Jetpack"
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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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#define SVC_TEMPENTITY 23
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#define TE_DLIGHT 27
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#define TASK_THINK 5500
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new g_pEnabled, g_pPower, g_pLift, g_pDrain, g_pRegen, g_pAccess, g_pSound
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new bool:g_bThrust[33]
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new Float:g_fFuel[33]
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new g_szSound[64]
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new g_iSyncHud
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public plugin_precache()
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{
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g_pSound = register_cvar("csb_jet_sound", "")
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get_pcvar_string(g_pSound, g_szSound, charsmax(g_szSound))
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if (g_szSound[0])
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precache_sound(g_szSound)
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}
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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_jet_enabled", "1")
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g_pPower = register_cvar("csb_jet_power", "320") // forward speed
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g_pLift = register_cvar("csb_jet_lift", "170.0") // upward push
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g_pDrain = register_cvar("csb_jet_drain", "1.5") // fuel per tick
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g_pRegen = register_cvar("csb_jet_regen", "2.0") // fuel per tick on ground
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g_pAccess = register_cvar("csb_jet_flag", "") // required admin flag(s), empty = everyone
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register_clcmd("+jetpack", "cmdThrustOn")
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register_clcmd("-jetpack", "cmdThrustOff")
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g_iSyncHud = CreateHudSyncObj()
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set_task(0.1, "taskThink", TASK_THINK, _, _, "b")
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}
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public client_putinserver(id)
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{
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g_bThrust[id] = false
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g_fFuel[id] = 100.0
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}
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public client_disconnected(id)
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{
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g_bThrust[id] = false
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}
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bool:hasAccess(id)
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{
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new flags[8]
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get_pcvar_string(g_pAccess, flags, charsmax(flags))
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if (!flags[0])
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return true
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return (get_user_flags(id) & read_flags(flags)) ? true : false
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}
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public cmdThrustOn(id)
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{
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if (!get_pcvar_num(g_pEnabled))
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return PLUGIN_HANDLED
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if (!hasAccess(id))
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{
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client_print(id, print_chat, "[CSB] The jetpack is reserved for VIP players.")
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return PLUGIN_HANDLED
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}
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g_bThrust[id] = true
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return PLUGIN_HANDLED
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}
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public cmdThrustOff(id)
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{
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g_bThrust[id] = false
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return PLUGIN_HANDLED
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}
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public taskThink()
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{
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new Float:power = float(get_pcvar_num(g_pPower))
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new Float:lift = get_pcvar_float(g_pLift)
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new Float:drain = get_pcvar_float(g_pDrain)
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new Float:regen = get_pcvar_float(g_pRegen)
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new players[32], num, pid, origin[3]
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get_players(players, num, "a")
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for (new i = 0; i < num; i++)
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{
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pid = players[i]
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new bool:onGround = (pev(pid, pev_flags) & FL_ONGROUND) ? true : false
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if (g_bThrust[pid] && g_fFuel[pid] > 0.0 && get_pcvar_num(g_pEnabled))
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{
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new Float:aim[3]
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velocity_by_aim(pid, floatround(power), aim)
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new Float:vel[3]
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pev(pid, pev_velocity, vel)
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vel[0] = aim[0]
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vel[1] = aim[1]
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vel[2] = aim[2] + lift
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set_pev(pid, pev_velocity, vel)
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g_fFuel[pid] -= drain
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if (g_fFuel[pid] < 0.0)
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g_fFuel[pid] = 0.0
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/* thrust light at the feet */
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get_user_origin(pid, origin)
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message_begin(MSG_BROADCAST, SVC_TEMPENTITY)
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write_byte(TE_DLIGHT)
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write_coord(origin[0])
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write_coord(origin[1])
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write_coord(origin[2] - 20)
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write_byte(6)
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write_byte(255)
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write_byte(random_num(120, 200))
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write_byte(0)
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write_byte(2)
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write_byte(4)
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message_end()
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if (g_szSound[0])
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emit_sound(pid, CHAN_STATIC, g_szSound, 0.4, ATTN_NORM, 0, PITCH_NORM)
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}
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else if (onGround && g_fFuel[pid] < 100.0)
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{
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g_fFuel[pid] += regen
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if (g_fFuel[pid] > 100.0)
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g_fFuel[pid] = 100.0
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}
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showFuel(pid)
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}
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}
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showFuel(id)
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{
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/* only bother while flying or when the tank is not full */
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if (!g_bThrust[id] && g_fFuel[id] >= 100.0)
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return
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new pct = floatround(g_fFuel[id])
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new bar[11], filled = pct / 10
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for (new i = 0; i < 10; i++)
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bar[i] = (i < filled) ? '|' : '.'
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bar[10] = 0
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set_hudmessage(0, 180, 255, 0.02, 0.85, 0, 0.0, 0.3, 0.0, 0.0, -1)
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ShowSyncHudMsg(id, g_iSyncHud, "Jetpack [%s] %d%%", bar, pct)
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}
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