I’m coming to a portion of my game where I’m moving away from the more standard building of using rooms and hallways with the more traditional walls, callings, and floor meshes to make them. These are more like my outdoor zones. Expect they are underground caves and the likes. As such some of the tricks, I’ve learned while creating outdoor zones will play out later on in how I went about some things.
The feature I’m talking about is called Splines and there is some decent documentation on it. In laymen terms, it allows you to reference a set mesh such as a cave and allows you to just drag it out with it creating as many of that cave mesh that fits within the ruleset created.
This is how people could create something simpler like rivers in a game. If you are good at it you could create a bunch of rulesets in it and then just go and drag it out to create a massive and interesting river.
When trying to work with a 3D object some things are required for it to work. Since it is connecting end to end those endpoints have to match each other. Otherwise, you end up with mismatching that could result in ugly seams, holes and impassable terrain.
I spent a decent amount of my day looking into how others have to implement Splines. This included trying to pick up on any tricks they could pass on to those wanting to know more about using them. In the instance, I want to use it for that tends is for more advanced users.
Creating the blueprint itself in Unreal Engine 4 can get a bit complex depending on how deep of a Spline system you want to create. I ended up not creating one as I just could not get the assets themselves to a place I was happy with it.
A lot of people in this space will use something like Autodesk Maya to create the 3D models they need. While I don’t have that exact program I was considering blender. Ultimately, I decided not to since these 3D models need to be perfect. When they are not you have to go in manually and place a lot of rocks and such to hide the imperfections.
You might notice in a lot of games that the outside of a cave, for instance, tends to have a lot of thought and effort put into it. Game developers tend to place a lot of rocks over the mouth of the cave, beams, and a long list of other objects. That’s more than likely to cover up the massive holes between that cave and any surrounding area. While mine would all be “underground” and I could skip that part. I’d still need to go in and fix all the issues from not having a really solid mesh to pull from.
As far as Splines go. I’m glad I have a little more understanding of them. One day I do have a possible use case for them. There are a lot of tricky yet fun things I think can be done in code with them. That, however, is not something I’m expecting to think about or do until 2022 or later. In which case I’m sure I’ll forget a few things.
With Splines no longer holding what I am looking to do. I asked myself what did I need from this map? What tools do I have now to do so? What do I need to learn? Along with some other questions as I revisited my thought process on this one.
The zone itself was going to be more like an outdoor zone expect it would be encased by rocks. There are many functions within the landscaping tools in Unreal Engine 4 that I could use. The ground I got to thinking would be dirt and rock anyways. Why not have a landscape layer as the ground and make it far more unique than I could have to attempt to use Splines in the first place? Is what I ended up asking myself in the end.
I took several rock meshes and enlarged them to meet my needs. I wanted things to be vast with a tall ceiling. So I took some time testing different heights and running around on my character for a better understanding of scale before I moved forward.
Since I have an actual landscape ground layer which most of my maps do not. This means I get to paint the ground and do some other cool stuff. In my outdoor map I already had a blend space for using three different layers for grass, dirt, and rock. The dirt and rock were a perfect fit for this map so I just reused some work I’ve already done and applied it to this area.
I also went in with the sculpting tools and made some elevation changes. At first, I used some randomness from the Hydro Erosion and some other tools for my first pass-through. I then went in manually and smoothed out, increase, or even decreased some areas of ground.
With this being a cave I wanted some nasty water in it for the lower-lying areas where the water layer I added would be. Some passageways are flooded and you have to wade through them almost waist-deep in some areas. There are also a few ponds and little puddles here or there. I did not end up creating as many puddles as I wanted as it ending up conflicting with some other stuff I wanted to add-in.
Some of those choices were done with a bit of lore I have in my mind in why this place is called Anguish in the first place. That won’t be something I wish to expand out at this time. Naturally, it's all run down and those that inhabit this place are long gone overrun by something else.
I found it interesting to keep in one area of the map itself. Everything else was done dragging into place each mesh ceiling rock. There were also some areas of the map I wanted a higher ceiling than others. Over 500 rocks are making up the ceiling alone. Which was not that bad.
Overall, I had a lot of fun creating little areas, passageways, and larger rooms. It was hard to not get lost in what I was doing and find out I was up way too late with things unfinished what I wanted to get done.
While I could have adjusted the range of light the torches I generally use give off that did not make much sense that a tiny torch could light up a massive cave. Heck even dozes of them are not enough to do the job. As s you can see in the screenshot above. The map had a couple hundred before I render the lighting to see what kind of monster I’d be dealing with.
This map is also deep underground. All the maps before this had the player take steps going down. Many of those maps even descended even further themselves. It would have been an “easy” solution for creating areas for sunlight to go through to help light up the place. It was not a route I wanted to take let alone from a visual standpoint it took away from the feel of this place.
I also felt it would take many thousands of lighting sources to resolve my issue if I wanted to go the route of more torches. There were already a couple of hundred torches along the cave walls. I even tried placing things like fireflies, spotlights over certain objects that could have had a glow and other things. Nothing in my short testing seemed to have fit the bill.
One rather dramatic option was to use Exponential Height Fog that would scatter my already existing lighting further out. The only downside was the lighting I had set up meant I had some options that would not work with this kind of fog. This just meant my scene would be rather foggy as seen in the screenshots.
I ended up rebuilding the lighting a couple of times for this map. The preview is never quite the same as the real thing. There were several other things I tested and failed at that are not going to make it into this post. Lighting is always something interesting to play around with at least for me. It takes a while to build so that slows things down while waiting on it.
Some of these rooms are quite tall and require a lot of lighting to be processed among other things. There are more than enough interesting areas in this one to keep it fun without dragging on for too long and giving the player of total anguish. Which was tempting to do.
Screenshots were taken and content was written by @Enjar. Screenshots are from Unreal Engine 4.
