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Interactivity - Coggle Diagram

- - - - PlayStation (dualshock/dualsense)
      - Xbox
      - Switch Pro
      - Joycons
    - - Used primarily in VR applications
- - - - Using objects from the environment to your advantage.
      - My favourite example for this would be Half-Life 2. It utilises and pushes the physics engine. An entire section of the game, Ravenholm, is based around it, where you use the gravity gun to launch sawblades and explosives to defeat waves of zombies.
    - - Pressing a key while looking at an object (such as a switch) to do something.
      - This is in so many games, from Doom released in 1993 to Elden Ring released in 2022. It's the most basic way of adding interaction with the game environment, but it's also very flexible.
    - - Sometimes known as triggers; when your character touches or steps on something, or enters an area that causes an event.
      - Again, this is in so many games, it'd be hard to list them all. This is also another simple way of adding interaction, but it's also flexible. You could start a cutscene, or cause a trap to trigger. Personally, my favourite example for this would be Half-Life released in 1998. It has so many triggers that cause little environment interactions. It just make the game feel alive, despite the aging graphics.
    - - NPCs or non-player characters are characters that are present in game but aren't controlled by players.
      - The best example of NPCs would go again to Half-Life 2. They are based on Valve's system called Nextbot, which is one of the most advanced NPC systems in any game engine. They just feel so realistic, and actually feel like they are there to help you, rather than be an annoyance and be in the way. They actively search for the best location to avoid incoming fire, try to avoid grenades, warn the player of events, and medics assist the player with healthpacks.