Ladders have been added to the game to elevate units up to higher levels and build buildings on stilts. My previous ladder system was a hacky mess which required quite a lot of calculations on the part of each unit while moving anywhere, even when no ladders were relevant. Thanks to a tip from Cpt_Trippz I changed the ladder system to include  a "Smart Nav Link" which automatically calculates a connection between two separated navigation mesh pieces once the ladder has been built.

The result is a lot more simple and it works quite well. You can see the green arrows connecting the green nav mesh planes. The unit understands that there is a way to go back and fourth between the elevations and approaches the ladder. Upon reaching the ladder, the unit will ascend or descend manually using the same functionality described before.
Unfortunately, it only allows one unit to climb at a time, so a workaround will have to be added.

I also added some new functionality to the ladders. If they are not up against a structure or cliff, the ladder will fall to the ground with physics. 

But after the ladder has fallen it is not useless as it can be picked back up and placed at a new location! Here is what it looks like when it's being carried. Pretty goofy but it matches the game's look so far.

The ladder can be carried by one or two units (it's much slower with just 1) and placed wherever  you like. I'm excited to see how this plays out in combat situations and I'm considering allowing the placement of units on flat roofs of structures like the Native American pueblos.

Let me know what you think, any tips you may have or ideas. Thanks!

As a tribal village, the main problem apart form combat that the player will have to deal with is the environment. I wanted weather effects to be clear and drastic, but also fair and survivable for the well prepared. There are three main disasters that can occur so far: floods, snow and fire. Massive rains cause floods, snowfall causes the water to freeze and weak roofs to collapse and fire burns through wood villages and grasslands quickly. I wanted the weather changes to feel sudden and powerful. 

I looked at other village builder games to see how they handled weather effects to some disappointment. Age of Empires and O A.D. snow is more of a change of scenery than something that must be planned for. Games like Banished and Rimworld treat winter as gradual threat that slowly grinds away your resources until suddenly people start dying of starvation or the cold. I wanted to go a different direction, making the seasons less predictable, more dramatic and more of a quick, punishing event than a slog.

Fire can be combated by building your structures out of rarer but stronger materials like adobe or stone, or by staying in wetter areas instead of the grassy highlands where fire spreads rapidly.  Settling in the swampy lowlands leaves you susceptible to  floods that can drown your people and sink your houses. Drowning can be avoided by building your houses on stilts and keeping your people in boats but snows will freeze the waters breaking stilts and making boats useless.

It shows you exactly when the snows will hit and when the worst of those snows will occur.  I believe this shows the weather for the 12 months of the year, three of which are snow in this example. I took this idea and modified it, so that you can see your current weather, and what weather is coming up in the next season. 

I added a UI element at the top of the screen, a 16 point wheel that rotates around clockwise. The arrow in the middle expresses which season you're currently in, so you can see which season is coming up in the next few months. At the moment, the art is non-existent, so red represents rain, green represents snow, and blue repeats the previous season so that seasons last longer.  At the moment it runs a bit randomly, but the idea is solid and it seems to work well. Next disasters will be added and have a chance of occurring depending on what the current season is.  Then throw up some nice UI art and boom!

Down the line I plan to add more season types such as droughts where fires are more prevalent and a darkness "season" where different enemies spawn, the dead may rise, cities need lights and units can disappear in the jungles without a torch.

​What do you think about random weather patterns, and darkness as a "season"? Let me know!

Advancement in technology is an already established system in strategy games. There are a few systems which are pretty commonly implemented throughout. Usually there is a technology tree, and research points are allocated into an available tech. Once that tech research completes, you are now able to build some new buildings or units another or a few more technologies open up to be researched.  This is the way it works in the Civilization games  and most other turn-based strategy games.

The downside to this is that nearly every civilization has the same linear progression and technological advances. It makes perfect sense from a game balancing perspective, but I don't like how your path is already laid out in front of you. I wanted to create something more fluid.

RTS games like Starcraft and Command and Conquer have a different system where by building a specific structure, you now have access to new units, technology and other structures. In Starcraft, these structures, units and tech trees are unique to each race which brings a great deal of diversity and different play styles, but again I wanted something less rigid. Even with multiple races, each with their own unique tech trees, you still know what your end game units will be every time.   I wanted to create a system that would allow a variety of outcomes from a single beginning.

Most strategy games use some combination of the two systems above, and I wanted to branch out from this in a unique way.

First I decided to look at what I wanted to accomplish in this project. I want to have a game where you learn new technological advances based on your specific problems, and multiple solutions work for each problem. Different problems can include environmental disasters, lack or surpluss of a resource, wild animals, other tribes and so on. Does your town keep getting flooded? Build your houses on stilts or build boats to keep your people out of the water. Nearby crocodiles keep eating your villagers? Build a wall to keep them out or train beastmasters to tame them. It also quickly became clear that you don't need all the technology, only what's relevant to your play-through. You don't need boats in the desert or snow-sturdy roofs in the jungle.

So I began looking at other games and what works with their systems. Skyrim has a system where you get better at what you use, and therefor advance in what suits you, which works well. Minecraft has an interesting system where building items allows access to more items, but it's up to you if you want to pursue them or not. I also liked the sense of discovery that came with messing around with the crafting grid and finding a new recipe.

I toyed with a LOT of ideas including finding technology in statues scattered around the map, doing mini quests for different gods that would reward you with specific technology, crafting your technology from combinations of available resources, and many others. But they all seemed too forced and too temporary. You can't be running around doing quests for gods, asking for boats when your people are wandering in knee-high flood waters already.

Then I realized, I needed to look back at the focus of the game, and draw a solution from that. Suddenly it all became clear. In my first post I established that the game would fully explore the idea that units are your main resource, so in technological advancement this should be no exception.

I created the idea of a "Thinker". A main unit that you could use to think  about different problems and he would come up with solutions. The thinker would engineer some technology based on the problem you have chosen and by reading the surrounding area and objects for inspiration. For example, you need to cross a body of water so you get the thinker and choose to think about the water. He may find you have quite a bit of trees around so he comes up with a boat blueprint, or perhaps he notices you have some elevation nearby so decides a rope bridge would work.

I really like this solution for a few reasons. First, it fits a design pillar of the game. Second, it creates a bit of "guided randomness" as you can only point to problems and you'll have to adjust to the solutions he comes up with. Third, there is quite a bit of discovery to be had from this. You might select the same object to be thought about multiple times and the thinker may come up with different solutions every time. 

Also, there are a few unrelated gameplay hurdles this character solves. It adds a good losing scenario and purpose to the game as well. If you lose your thinker, you lose the game. So you must take care of this slow, weak or defenseless unit. Much like the king in Chess. Also, it can introduce unlockables to be used in future playthroughs. I like the unlockable system in FTL because you play the same basic game but with different ships slightly geared for one strategy or another. This system can work in a similar fashion, where different thinkers lean towards different playstyles. One can be heavily militaristic, another a fan of naval transports or something like that.

Finally, I like this system because, as far as I know, nothing like this has been done before.
The problem with this will be getting new players to understand the system in a clear way.

Basically what's going on is: there's a check to see if the desired destination (the yellow vector) is not reachable from the unit's current location. If it is, go ahead and walk to the destination. Otherwise, do the "Get Ladder" function. In that function, it searches to see if there are any ladders that are reachable from  the destination, if so, get the nearest one, and move to it. Once at the ladder, the "Climb Ladder" function gets called and the unit floats to the top (or bottom) of the ladder, a delay is placed for the time that it takes the unit to climb the ladder (1.3 seconds) then the unit carries on to the desired destination. 

I hope that makes sense. Otherwise, don't worry about it! It works great. I even have it working for houses with ladders at their entrance. ​

Each chunk edge can have one of the combinations above. ​

As there are 9 edge combinations, and although each tile has 4 edges, the actual total number of tile chunks I created is just 18. There are 4 combinations I omitted because they're strangely arranged (I may add them at a later date). ​

So basically that's it! The map ends up looking something like the sketch above. I created an algorithm that generates tiles, one at a time, by reading the edges of the tile right before it and the one above it, then choosing a random tile that fits. ​​

The next step is to make a different shapes and sizes for each roof and wall type, so I can mix and match them freely, allowing me to make a huge variety of structures using combinations of these different models. ​

You can see above that the units face the same direction as the camera rotates around them. This is a small but necessary detail. One of those things you only notice when it's missing.

It doesn't look particularly impressive but it does the job and I like the look.

​And that's how I've made 2D characters able to run around in a 3D world and face the right way!

​I want this game to be set in both an ancient and timeless world. In some kind of lost  age with tribal communities all unique and different. Unit differences (as in model types) seemed to me like tedious work at the moment so I'm focusing on buildings, their architecture and how they're built.