本文是“使用Unity制作《The Fork Of Truth》的关卡”系列的第三部分。前两部分分别是：
（《The Fork Of Truth》的镜头的近距离位置和远距离位置——注意角度的区别。）
Building Levels in Unity – Part 3 of 3
by Matthias Zarzecki
It’s me again, Matthias of Paladin Studios. This is part 3 in a series about the level design of The Fork Of Truth. The first two parts are here:
Part 1 – A look at how the terrain in Unity works
Part 2 – The logistics of managing a vast library of environmental objects
In this final post of the series, I’ll go into all the smaller and ancillary tricks that make the entire level come together.
Point of View
The view of the game has to be carefully considered, and a slight variation influences the way we see the game. Make the camera “over the shoulder”, and it feels like a 3rd-person brawler. Keep it high in the air and static, and it becomes a real-time strategy game. If you have it hovering above the player, moving with her, suddenly it feels like an Action RPG.
(The near and far positions of the Fork of Truth camera – note the angle difference)
We tweaked the camera settings for a long time. Ultimately we decided on variation of the Action RPG camera, angled to look down on the player in a fixed orientation. The pitch of the camera
changes slightly, depending on the zoom level: When the camera is closer to the ground, it will tilt towards the horizon. If it’s up in the air, it will lean towards looking down vertically.
The level shape changes from small corridors to open areas. By adding “choke points”, players are forced into the funnel of the level, which prevents them from wandering and getting lost in open space. The path is ultimately linear, but there is enough room to go off and explore for a while. Natural bottlenecks lead players back onto the path again.
(The level for the Fork of Truth demo, with red arrows pointing at the choke points)
The level gives the player the possibility to explore and find goodies, but also a clear path towards the end goal.
Wherever feasible we try to add fun details into the environment which tell their own story and give “life” to the world.
Fishing-equipment near docks:
Trampled fences, the aftermath of a goblin-raid:
Signposts to show you’re on the right track:
Fake cows, because we didn’t have time to model actual ones
It’s these little details that tell the story of the environment: Who lives here? What has happened? Is it dangerous? What can we expect next?
We use a simple directional light with realtime shadows. A little tip for lighting: The sunlight color should typically be a little bit yellow, and the shadows should be a little bit blue-ish. This simulates a clear blue sky (blue coming from all directions) with a “yellow” sun (the directional light).
At a certain distance from the player fog is generated. This obscures far away objects, saves rendering-power, and adds to the atmosphere. The level can be also made more “spooky” by increasing its density.
A subtle fog (as seen above) can enhance the atmosphere of the scene – but don’t overdo it.
Changing the Atmosphere
When the heroes enter the forest, the atmospheric theme switches subtly. The lighting gets darker, and the fog creeps closer. Objects placed beyond that point are more dilapidated and have more muted colors. Here you can see the new settings. Note the differences to the other screenshots:
Several sound sources are placed throughout the scene. Adding subtle sound effects can have a huge impact on the level. Hearing birds chirp and water rush help you to fully immerse yourself into the game, as it it were a real place.
The environment does not have to be static. Even though we did not have the budget to add NPCs, we still wanted to add some interaction with the environment other than just bashing enemies. When the gang enters the village, each time they walk near a house the villagers close the shutters, saying things like “Hide yo kids! Hide yo wife!”. This makes the world feel populated, even though there aren’t any actual characters around.
There are many ways to achieve these kinds of effects, just think of things that the environment could “do” to respond to your actions or presence. Ducks could fly away, a deer could chase off in the distance, a child may come up to play with you. The possibilities are endless.
Who doesn’t love goodies? Whether it’s treasure chests or simple hidden loot drops, it’s a great thing to discover something edible/sharp/pretty/valuable. The beauty of a chest is that it’s always a little surprise what they might yield. They spring open, uncovering the treasure – yummy, apples!
Texturing on the ground
As mentioned in part 1 of this series, you can paint on the terrain in the scene. What is also possible are gradients between several textures, and the creation of mash-ups between those two.
We use this to put dirt on cobblestoned roads:
And leaves on the ground in forests:
Unity comes with its build-in Asset-Store, where you can get all kinds of stuff for your game
Our time was very limited, so we decided on concentrating on the characters first.
Sadly this meant we wouldn’t be able to give the same amount of care to environmental objects. The compromise to solve this situation was to use external assets for a few selected high-intensity items, which are used throughout the entire environment.
Houses were a good choice, as those are usually expensive in terms of time to invest. We found a nice pack of medieval building-elements. From those we assembled the buildings. We then re-did the textures, so they would fit our art style and aesthetics better.
Be careful with what you use – some assets need a unique, custom-built approach, while others are more generic and can be bought. Always try to keep the game consistent – this goes for sound, visuals, animations and any other assets you purchase and/or create.
If at all possible, start with a little backstory on the environment. Who lives here? What kind of people are they? How do they make a living? Where do they walk? Are there any enemies? What are they up to? Where do they come from? We actually wrote a backstory for the village and its surrounding environment, even though you can’t see it. This hidden lore is the basis of everything in the region, and adds to the believability of the place.
Fine-tune the camera angle, and adjust the environment to make it fit
Use “open” areas and choke points to balance exploration and progression
Lighting and atmospherics do not have to be static – change them to change the mood
Add ambient sounds to increase believability
Can you let the environment react to the player?
Where are the goodies? Treasure chests? Little easter eggs?
Use the Unity Asset Store to quickly fill the level with content (but use it wisely!)
Write a backstory so it’s easier to fill in the details of the level
There are many, many ways to build a level. I hope this gave you some new insights into creating levels in Unity, and maybe help you with your own!(source:matthewongmedesign)