Reduced dynamic budget at low player count

[FunnyMan3595]

What Does This PR Do

Makes dynamic usable below 10 players.
Scales back dynamic budget below 30 players. Previously, it was always 1 per player. Now:

• Flat budget of 7
• +0 budget each for players 1-4
• +0.5 budget each for players 5-20 (cumulative total 15)
• +1.5 budget each for players 21-30 (cumulative total 30)
• +1 budget each for players 31+

Breakpoints:

• 7 always: 1 tot
• 10 @ 10 players: 1 tot/cling/vamp/flayer
• 14 @ 18 players: 2 tots
• 17 @ 22 players: 1 tot, 1 cling/vamp/flayer
• 21 @ 24 players: 2 clings/vamps/flayers OR 3 tots
• 24 @ 26 players: 2 tots, 1 cling/vamp/flayer OR 2 clings/vamps/flayers OR 3 tots
• 27 @ 28 players: 1 tot, 2 clings/vamps/flayers OR 3 tots
• 28 @ 29 players: 1 tot, 2 clings/vamps/flayers OR 4 tots
• 30+ players: as before

Why It's Good For The Game

Lowpop antagonists are pretty brutal. This scales them back a bit, so that the crew has a better chance.

Also, dynamic includes extended, so having a min of 10 meant <10 players forced autotot.

Testing

code/tests/test_dynamic_budget.dm

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Declaration

• I confirm that I either do not require pre-approval for this PR, or I have obtained such approval and have included a screenshot to demonstrate this below.

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Changelog

🆑
tweak: Dynamic can now roll below 10 players.
tweak: Dynamic budget has been reduced below 30 players, with a minimum of 7 (one traitor).
/:cl:

[chuga-git]

code looks good