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Sentry Guns
V 0.5.4 BY $kyL0n

This plugin will adds Engineers' ability from Team Fortress to build sentries. The Sentry gun (sometimes known as a "Turret", "Sentry" or abbreviated to "SG") is a building that can be constructed by any player and functions as an automated weapons platform that fires upon any enemy who enters its line of sight. The Sentry Gun will always target and fire on the closest enemy player, provided they are within firing range and in line of sight of the Sentry (not behind a wall, etc). Sentry Guns doesn't attack opposite team sentries, only players. Sentry guns can be upgraded twice, with the help of a team member, to be bigger and meaner. By default the sentry gun costs 1000$ to build, 500$ to upgrade to level two, and an additional 250$ to upgrade to the third and final level. You can remotely choose to detonate a specific sentry, or all of them. You can also remotely look through the spycam mounted on your sentry.

Required Modules:
• cstrike
• fun
• engine
• fakemeta

CVARs:
sentry_max "2" - Maximum amount of sentries, which can be build per player (default 2).
sentry_cost1 "1000" - Sentry cost to make first sentry.
sentry_cost2 "500" Sentry cost to upgrade to level 2.
sentry_cost3 "250" Sentry cost to upgrade to level 3.
sentry_team "0" - Sentries available to 0 = all, 1 = T, 2 = CT
sentry_wait "15" - Sentry Delay Each Round Start

Commands:
sentry_menu - Build/detonate/upgrade sentry guns with this one-for-all menu. You can also spy through your sentries using this menu.
sentry_build - Quickie to build a sentry without going through menu. Since version 0.2 you can now also point at a sentry and upgrade it with this command, if the sentry is close enough.
say /sentryhelp or say sentryhelp - Displays info on how to bind buttons, what they do, etc

Installation: Download and extract the contents from the .rar archive to your server's mod directory (cstrike) and make sure to add .amxx files to your plugins.ini file and check your modules.ini file for the required modules.

Configuration: Add all necessary variables (cvars) at cstrike\addons\amxmodx\configs\amxx.cfg.

NOTE: This plugin may doesn't work properly with Biohazard Mod. For Zombie Mod, look at [ZP] Sentry Guns plugin. Also known issue is that sentries stuck in roof, when they placed in tight places.