GChem - Chemical Warfare

GChem adds semi-realistic Chemical Warfare Agents to Garry's Mod with 8 unique gases!

This is the first mod I have ever released! Feel free to offer any suggestions or criticisms you have.

If you wish to run this on a server, please refer to the pinned Config Breakdown discussion. It should help with tweaking considerably! Note: While server usage was considerable before, several optimization updates have dramatically reduced network and server usage.

Gchem will only be receiving bugfixes from here on out, I have moved on and do not expect to return to GChem. Feel free to decompile GChem and modify it to your liking, just credit me if you post a modification.

Features

• 8 Unique gases
• 6 New Weapons
• Chemical Exposure system modeled off of real-life toxicity data
• Works on NPCs
• Some chemicals stick to objects and evaporate over time
• Volumetric Gas that fills rooms and is blown in the wind
• Non-Volumetric (Default) Optimized particles that allow people to drench maps in gas
• Gas Bombs, Canisters, and Grenades
• A Gas Mask and Chemical Suit
• Compatible with Jmod Gas Mask, Respirator, and HAZMAT Suit
• Compatible with the gmod4phun Gas Mask/Contagion Gas Mask, the Metro Gas Mask and the Pressurized External Suit
• Compatible with Stormfox Weather
• Compatible with Wiremod
• Hint system to make learning easier
• Tweak and balance gases to your liking with the config located at garrysmod/data/gchem_config

Meet The Gases

• Chlorine - The first successful gas deployed in World War 1, Chlorine is a sickly Green gas that immediately burns the eyes and lungs
• Phosgene - Responsible for 90% of Gas Deaths in World War 1, Phosgene is a colorless (or near colorless ingame) gas with light initial effects, but is extremely toxic 2 minutes after exposure
• Green-Cross - A 50-50 mix of Chlorine and Phosgene, Green-Cross acts like a less potent form of chlorine, attacking the eyes and lungs, however, the phosgene mixed in proves to be anything from a nuisance to deadly depending on the dose
• Mustard - Responsible for 80% of British Gas Casualties in World War 1, Mustard Gas is an yellow gas that attacks the eyes, lungs and skin, causing coughing and blindness 8 seconds after exposure, and debilitating skin burns 2 minutes after exposure in severe cases. Mustard gas also sticks to objects, requiring decontamination before it can be safely used again
• Sarin - Discovered by the germans just before WW2, Sarin Gas is an extremely toxic colorless, odorless gas that causes vision dimming, twitching, heavy breathing, and death, followed by a fit of convulsions. Primarily an inhalation hazard, some Sarin is absorbed through skin, harming people wearing gas masks.
• VX - One of the most toxic substances known to mankind, VX Gas is an extremely toxic colorless, odorless, persistent gas that causes vision dimming, twitching, heavy breathing, and death, followed by convulsions. Notably more toxic then Sarin, VX also sticks to objects just like mustard gas, requiring decontamination before safe use. Further, VX is much more capable of being absorbed through skin then other chemical agents, meaning full hazmat suits are necessary to survive VX gas.
• Hydrogen Cyanide - Infamously used in the systematic murder of 6 million jews during World War 2, Hydrogen Cyanide is a colorless, odorless, lighter-than-air gas that causes confusion and death 8 seconds after exposure. Extremely deadly indoors, but outdoor use requires massive concentrations of gas, also, degrades JMOD Gas Mask filters 3 times faster then other gases.
• CS Gas - Commonly used as a riot control agent, CS Gas is a White smoke that causes coughing and blindness in those exposed to it and proves generally non-lethal, except in cases of massive exposure, such as being trapped in a small room.

Methods of Exposure

• Face Exposure - Every gas causes effects when inhaled, however, full face protection will completely stop this method of exposure, while Jmod Respirators will halve the dosage
• Skin Exposure - Some gases can be absorbed through the skin, albiet at a fraction of inhaled gas, so gas masks still offer considerable protection. Mustard Gas, Sarin, and VX all have this ability
• Contamination - Some gases stick to objects, slowly evaporating off objects, gassing anyone nearby, and if the gas is skin-soluble, liquid will be absorbed through the skin. Further, contamination is transferred on contact, making contaminated objects extra hazardous. Mustard gas and VX both have this ability

Protection

• Gas Mask - Provides full face protection with some vision limitation, but no slowness or visible model. Recommended to be used only on models with existing gas masks, type /dropmask in chat to take off
• Chemical Suit - Provides skin protection to players, will also change their playermodel to a chemical suit, unless the convar gc_suitmodel is set to false, type /dropsuit in chat to take off
• Jmod Gas Mask - Provides full face protection, albiet with limited vision, slight slowness, and a model visible on the player model. Recommended to be used on models without an existing mask, use the command jmod_ez_inv to toggle
• Jmod Respirator - Provides half face protection, cutting down dosage by half, but removing the players ability to smell gas. No vision limitation, but it does slow players slightly and has a visible model, use the command jmod_ez_inv to toggle