This is post 199. More about the history of this site in the next post.

For now, this is about how the various worlds of Andras tie together. In some ways, this is sparked by Vincent Florio's post about mixing Sci-Fi with Fantasy. Where it differs, however, deals with how the rules for various settings can work together.

Lorica is about mechs and/or tanks and Tiezerekan is about space fantasy. A far future setting has some elements in common with space fantasy, namely interplanetary travel. More than that, both setting rely on creating various ships and other craft to accomplish goals. Lorica has many classes of mechs, air ships and the colossal drop ships. Tiezerekan has many classes of space craft to explore, conduct trade, transport and fight in wars.

The idea behind Andras is to provide one system to make craft for both worlds. While it may require some amount of abstraction, I really didn't want a lot of hand-waving to be part of the process. I want something straight-forward with lots of options that doesn't bog down players that just want to get started.

More than that, I want a system that also connects with Dweneyarda. High fantasy vessel making? Sure. Sooner or later, you may want to create naval vessels. When the system is complete, I also hope that the rules can incorporate generation of medieval-ish artillery, golems, and other magical creations.

Let's start with making mechs/tanks for Lorica as a part of this walk-through, we will re-create the Loanza light mech:

  1. Choose a power source.The Loanza uses a fusion engine with a power rating of 1300. It has a mass value of 12. (This is important later)
  2. Choose Shields, Armor, Weapons, and special attachments.Everything has a mass and power usage score. Both of these scores affect the amount of drain on the power source. There are trade-offs that make the game interesting.In Lorica, Shields directly benefit Armor Class, making a mech more difficult to hit. The more powerful the shields, the more power required. Shields do not weigh much, but because of the high power requirements, too much shielding can leave little power for weapons and movement.The Loanza uses Rating 6 shields providing an AC bonus of 6. The power drain is a relatively low 31 points and the mass is 2. These numbers are important later.

    Armor uses no power, but has a high mass. In Lorica, Armor provides the Hull points. One point of armor costs 1 point of mass. The Loanza has a lighter amount of armor, 60 units of armor costing 60 mass points.

    The pilot is a special attachment. The space for the pilot costs 3 power points and 3 mass points. Another special attachment could allow space to carry infantry, but that won't be used for the Loanza.

    Weapons have varying values for mass and power. Lasers use a lot of power, but have the greatest range. Missiles costs very little power, but have limited range. Slug thrower do great amounts of damage, but are quite massive.

    The Loanza has the following weapon systems:

    Weapons Range Power Mass Damage
    Form III Laser
    		 20 10 4 8+1d8
    125mm Slug
    		 15 6 47 28+1d12
    SR Missiles(12) 6 2 15 1d12 x 6
  3. Now for the math to calculate the movement rate and the Hull points. Optionally, the rough size can be calculated as well as the total cost.Here's what we have so far:
    Loanza
    		power mass cost
    Engine 1300
    		12 650000
    Shields 6 31 2 30000
    Armor 60
    		60 3000
    Pilot 1 3 3 300
    Special Att 0 0 0 0
    Weapons





    		Form III 10 4 72000

    		125mm 6 47 218000

    		SR(12) 2 15 30000























    		Velocity
    Totals
    		52 143 1003300 8

    First we'll calculate the movement rating:
    Start with the Engine Rating (1300) and subtract the total power points for the shields, weapons and other components. In this case, all systems drain 52 power points. 1300 - 52 = 1248.

    Now divide the subtotal by the total mass points dropping any remainder. The total mass points for the Loanza is 143. 1248/143 rounds down to 8. A movement rate of 8 means that the vehicle can move 8 hexes per round.

    Now to calculate the Hull points:
    In Lorica, one unit of armor provide 12 Hull points. It is assumed that the armor is a futuristic alloy. 60 times 12 equals 720 Hull points.

    For estimated size, I use a unit of volume I call a ton. It is 1000 cubic feet or a 10' x 10' x 10' cube. One mass point equals one ton. Since the Loanza has 143 total mass points, it is 143 tons in size. This is 143,000 cubic feet. It is about the size of an oil tanker.

  4. With these numbers, provide a good description of the vessel.

How could something like this apply to Tiezerakan or Dweneyarda?

Tiezerkan vessel would use similar engines. Keep in mind that a 1300 rated engine in one world is not necessarily equivalent to a 1300 rated engine in another. In Tiezerkan, vessels are moving at speeds hundreds or thousands of times faster than tanks. However, to keep the math simple, there no need to create a master table of engines, use the same ones. For crossover, simply come up with a conversion rate.

Weapons in different settings will vary in damage. A GM may decide that weapons do absolute damage. For example, a 17th century cannons may only do 1d4 Hull points of damage as opposed to the large values of damage for Lorica weapons. Tiezerakan weapons may be a factor of 10 or 100 times more damaging than Lorica.

A GM may also decide that weapons do relative damage. A 17th century cannon may do 1d10 Hull Points of damage in a fantasy setting, but very little if brought into another. Again, if you do crossover, create a conversion factor.

You may decide to assign different numbers of Hull points per one unit of armor depending on the material. Steel may be 8 Hull points per unit of armor, for example. Wood may be 6 Hull points per unit of armor. A GM could define as few or as many materials as desired.

Special attachments vary considerably. Mechs do not need living quarters or galleys, but interstellar vessels do. Some settings may not have energy shields like Lorica. In each setting, special attachments are better defined.

Lastly, a ton may not be the same in every setting. In some settings, a ton may be a 5' x 5' x 5' cube or 125 cubic feet. In others, it may be thousands of cubic feet. Like engines, relative values help to simply things. I have not found a need to do this, using this system, I have re-created a 16th century Portugese Nau with close to real-life values.

After post 200, some more concrete examples of this system in other settings.