It's that time of the week again, which means time for another tutorial. I figured i might as well get this out of the way before Irene hits in case I lose power. So, today I will cover Dynamic lights, how to make them work, and how they are useful. Difficulty: 1/5 Words/commands you should know:light_dynamic - An invisible point entity that changes over time.Parent - "The material or source from which something is derived"- Or in other words, the object that controls other objects.Trigger_once/multiple - A brush entity that, when entered by a player or object, sends an output.Child - The opposite of the parent, it is the object being controlled by the parentThe reason I made this tutorial was because I actually had a lot of trouble making light_dynamic when I started mapping. Step one - Setting Up The first thing you want to do when making a light_dynamic is place an entity anywhere in your map. Once you've placed down an entity you want to double click it and make it a "light_dynamic". You can mess around with the options as you please, but here are some important things to remember:By setting the outer and inner fade angle to 0, instead of being a spotlight, it will be like a regular light (it will still be move-able).The Light color you set in hammer may appear slightly different than it does in game."Light Brightness" should be set in between 2-4, going higher will make it appear negative (all the colors will be opposite).You can still change the appearance of a light_dynamic (ex. flickering, pulsing etc.)Once you've set all the options on your light, you want to make an object to parent it to, this can be a prop, or a physbox type entity. When you've made/spawned the "parent" name it, in this case you can name it Parent1. Drag your light_dynamic entity to your prop/physbox and align it so it shines in the right direction. Once this is done, double click the light_dynamic and make it's parent "Parent1". Step two - Mobility There are a number of ways you can move the light source. For example, the parent prop "Parent1" can be the child of a func_tanktrain, all you have to do is set up the path and let'er rip. Another way is doing it in the fashion of a hanging light, by using the entity phys_ballsocket entering "Parent1" into the entity 1 field, you will have created a ballsocket. The light will look as if it were swinging from the ceiling if hit. The third and final (simple) way to make it mobile is to parent the object to a weapon, when the weapon is picked up the child object will move with the player. (see example map here). FAQ - Will be updated if necessary. In Minas Tirith, Gandalf can activate a bright light at any given time, how do i replicate this? I have not personally looked into this aspect of minas tirith, but a way to do it is to place a button in front of the player, and have the light_dynamic start deactivated, and be activated once the button is pushed. You can also have a delayed deactivation input to turn off the light. In some maps, light's emitted from objects have a sort of glow near the center, how do i do this? This is done with a env_sprite, simply place an entity anywhere in your map and make it in env_sprite. Choose the sprite of your choice in the options, and parent it to a weapon, or whatever is making the object mobile. This can also be deactivated and activated in the same/similar way to the light_dynamic. Whats are some practical uses for light_dynamics? Light_dynamics can be used for a variety of things, more commonly they are used for swinging/hanging light, light on elevators, or effects for special/prop weapons. Thanks for reading, hoped this help. Feedback is appreciated!