In a fit of idleness, I once came up with a
design document for a space 4X, based on various posts by people such as Cyborg and eRe4s3r on this forum as well as my own personal experiences. Since it's topical here, I'll quote some ideas for diplomacy I had (you might also want to consider them for the TLF expansion, BTW):
Favor credit (FC)This is an attempt to add a nice bit of realism and gameplay to diplomacy. The basic premise: people will often act in a nominally altruistic manner, so that the beneficiary will reciprocate at a later date. Even if the generosity isn’t done with this specifically in mind, there is a social expectation of such.
When you give something to another faction for free, or offer a highly favorable trade with them, they’ll become indebted to you, which gives you a positive FC balance with them. Consequently, if you ask them for help in the future, they’ll be more inclined to give it without asking anything in return (an action which will restore the FC to neutral).
AI players who are on neutral to good terms with you will also sometimes give you free stuff, in order to accrue FC. If you then refuse to repay the favor, this will piss them off and make others trust you less. Factions will also be more likely to demand payment up front rather than offer a favor to people who have strong negative FC ratings in general. “Are you
ever going to return that frigate I lent you?”
Meditating conflictsIn real life, neutral third parties or the UN are often brought in to meditate over attempts to resolve an international dispute through diplomacy.
How it might work ingame: Each of the two negotiating factions comes up with a list of what they want, and what they are (or aren’t) willing to give up for it. The meditator can then use favor credit, bribes or threats to get each participant to amend their list to something more acceptable to the other party. For extra fun, each negotiator could have a limited patience; they walk away if talks drag out for too long.
What do you want?There should be a handy button to ask AI faction leaders if there’s a planet or tech they’d like to have in particular. This can help the player get them something they want.
No, really, what do you want?Faction motivating factors should be variable and extend beyond galactic conquest. Some interesting real-world-like ones could be:
- Retaking old colonies that were lost to them
- Raising the people’s standard of living
- Becoming an economic leader in the galaxy
- Establishing the empire’s security against perceived outside threats
- Joining in on another faction’s looming technology/wonder victory
Limited conflictThe AI can be in a “limited conflict” state, where it seeks to capture or destroy a single objective (say one or two planets) It commits only a moderate number of forces; if the opposing faction sends more, they may try to match it or back down if they can’t/won’t. The faction will expand the conflict to a full-scale war if the enemy escalates by attacking other systems, or if a victory convinces the war hawks in the faction’s political system that they can gobble up more… or if the combatants just get sufficiently pissed off at each other. If it decides not to escalate, it will try to negotiate for peace once the immediate conflict is concluded.
Versailles TreatyIf one faction extorts punitive terms as part of a peace treaty, its defeated enemy may attempt to exact revenge once it rebuilds.