More Than Just Maps: Why Props and Custom Behaviour Matter
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I've accidentally made environmental destruction almost as entertaining as shooting the monsters. 😂
Posted by danielkaas94 on Sep 10th, 2026
More Than Just Maps: Why Props and Custom Behaviour Matter
One of the things I've become increasingly interested in during the development of my Doom project is something that is easy to overlook when making a map:
Props.
At first, they were simply decoration.
A trash can here.
A cardboard box there.
A palm tree beside the road.
They made the environments look better, but they were essentially static objects placed around the map.
Over time, however, I started asking myself:
**What if these objects actually reacted to the player?**
That question has led to one of the more enjoyable parts of developing this project.
A Prop Doesn't Have to Be Static
Most Doom mapping focuses heavily on architecture, textures, monster placement, weapons, encounters, and progression.
And understandably so. Those are the foundations of a good Doom map.
But environmental objects can contribute much more than visual decoration.
A trash can doesn't necessarily have to just sit there.
A palm tree doesn't have to disappear when destroyed.
A cardboard box doesn't have to be an immovable piece of scenery.
I've been experimenting with giving these objects their own behaviour.
They can have health, mass, pain states, particle effects, physics reactions, and dedicated death sprites.
Suddenly, they aren't just decorations anymore.
They're objects that exist within the game world.
Death Sprites Make a Huge Difference
One particularly small change has had a surprisingly large visual impact:
Props no longer simply disappear when destroyed.
Instead, many now have their own death sprites.
Destroy a chair and you see the destroyed remains.
Destroy a trash can and the lid can be left behind.
Destroy a palm tree and it has a dedicated destroyed state.
Break an umbrella and its remains stay in the environment.
This might sound like a tiny detail, but it completely changes how destruction feels.
Compare:
Shoot object → object disappears
with:
Shoot object → object reacts → particles appear → object enters pain state → destruction occurs → debris remains
The second interaction feels significantly more physical.
Particle Effects Give the Environment a Pulse
I've also started creating custom particle behaviour for individual props.
This means that different objects can react differently when damaged.
Palm trees can drop leaves.
Glass can produce fragments.
Cardboard boxes can throw out their contents.
Trash cans can spill objects.
Other props produce their own visual effects based on what they are made of.
The important part is that the reaction can happen **before the object is destroyed**.
You can shoot a palm tree and see leaves falling while it is still standing.
You can keep shooting it and eventually destroy it.
That small feedback loop makes the environment feel much more responsive.
It is the kind of detail that you may not consciously think about while playing, but your brain immediately recognizes that something is reacting to your actions.
Turning Props Into Gameplay Objects
Something else I've discovered is that props can actually affect gameplay.
A trash can can become temporary cover.
A large object can block movement.
An explosion can throw debris around.
A destructible object can reveal something behind it.
A prop can create visual feedback when a player or monster attacks it.
This means environmental decoration doesn't necessarily have to exist separately from gameplay.
It can become part of it.
I've even started tuning things such as mass, health, velocity, scaling, and destruction behaviour to make objects react more naturally.
That is where this project has started moving beyond traditional map editing for me.
The Slightly Ridiculous Part
One of my experiments has been using existing props as particle effects instead of creating a completely new custom asset for every possible effect.
For example, cardboard boxes can throw out donuts.
Trash cans can throw out beer bottles.
Beach umbrellas can use small coloured bottles as pieces of their destruction.
Traffic cones can produce small orange fragments.
It is not necessarily the most conventional approach.
But it works.
And honestly, there is something incredibly satisfying about shooting a cardboard box and watching its contents scatter across the floor.
At this point, I sometimes find myself shooting the props just to see what happens.
I've accidentally made environmental destruction almost as entertaining as shooting the monsters. 😂
Why I Think This Is Often Overlooked
Doom mapping has an incredible amount of depth, but I think environmental props are one area that doesn't always receive the same attention as architecture and gameplay.
A mapper can spend hours creating an impressive room, but a few well-placed environmental objects can completely change how that room feels.
And when those objects react to the player, the difference becomes even greater.
The map starts feeling less like a collection of geometry and more like an environment.
That's what I'm trying to achieve with this project.
This Project Is Becoming More Than Maps
This is probably the most important realization I've had while working on it.
I'm not just building maps anymore.
I'm building:
- Maps
- Architecture
- Lighting
- Gameplay encounters
- Custom sprites
- Destructible objects
- Particle effects
- Physics behaviour
- Custom interactions
- Secrets
- Dynamic events
- Custom logic
The maps are the foundation, but the logic and behaviour are what bring them to life.
A wall is static.
A trash can that reacts when shot, throws its lid into the air, produces particles, changes state, and leaves debris behind is an actual interactive object.
That distinction has become increasingly important to me.
Small Details, Big Difference
None of these individual systems are revolutionary.
A death sprite is a small addition.
A particle effect is a small addition.
Giving an object health is a small addition.
Adding physics is a small addition.
But when you combine hundreds of these small decisions, the entire experience changes.
The player starts interacting with the environment naturally.
They shoot something and expect a reaction.
They see a prop and understand that it might actually do something.
The environment becomes part of the game instead of simply being the background around it.
And that's ultimately what I'm trying to accomplish with this Doom project:
Not just making maps, but making environments that react.