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[Balance] Tweak trainer evolution delay so trainers are more likely to use evolved Pokemon in later waves (#4190)

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* Tweak trainer evolution delay

* Document getStrengthLevelDiff
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AJ Fontaine 2024-09-12 11:21:43 -04:00 committed by GitHub
parent 5724ed4a5c
commit bfc4f2d1cd
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1 changed files with 21 additions and 8 deletions
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29
src/data/pokemon-species.ts
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@ -657,6 +657,24 @@ export default class PokemonSpecies extends PokemonSpeciesForm implements Locali
return this.getSpeciesForLevel(level, allowEvolving, true, strength, currentWave); return this.getSpeciesForLevel(level, allowEvolving, true, strength, currentWave);
} }
/**
* @see {@linkcode getSpeciesForLevel} uses an ease in and ease out sine function:
* @see {@link https://easings.net/#easeInSine}
* @see {@link https://easings.net/#easeOutSine}
* Ease in is similar to an exponential function with slower growth, as in, x is directly related to y, and increase in y is higher for higher x.
* Ease out looks more similar to a logarithmic function shifted to the left. It's still a direct relation but it plateaus instead of increasing in growth.
*
* This function is used to calculate the x given to these functions, which is used for evolution chance.
*
* First is maxLevelDiff, which is a denominator for evolution chance for mons without wild evolution delay.
* This means a lower value of x will lead to a higher evolution chance.
*
* It's also used for preferredMinLevel, which is used when an evolution delay exists.
* The calculation with evolution delay is a weighted average of the easeIn and easeOut functions where preferredMinLevel is the denominator.
* This also means a lower value of x will lead to a higher evolution chance.
* @param strength {@linkcode PartyMemberStrength} The strength of the party member in question
* @returns {@linkcode integer} The level difference from expected evolution level tolerated for a mon to be unevolved. Lower value = higher evolution chance.
*/
private getStrengthLevelDiff(strength: PartyMemberStrength): integer { private getStrengthLevelDiff(strength: PartyMemberStrength): integer {
switch (Math.min(strength, PartyMemberStrength.STRONGER)) { switch (Math.min(strength, PartyMemberStrength.STRONGER)) {
case PartyMemberStrength.WEAKEST: case PartyMemberStrength.WEAKEST:
@ -666,9 +684,9 @@ export default class PokemonSpecies extends PokemonSpeciesForm implements Locali
case PartyMemberStrength.WEAK: case PartyMemberStrength.WEAK:
return 20; return 20;
case PartyMemberStrength.AVERAGE: case PartyMemberStrength.AVERAGE:
return 10; return 8;
case PartyMemberStrength.STRONG: case PartyMemberStrength.STRONG:
return 5; return 4;
default: default:
return 0; return 0;
} }
@ -716,7 +734,7 @@ export default class PokemonSpecies extends PokemonSpeciesForm implements Locali
if (strength === PartyMemberStrength.STRONGER) { if (strength === PartyMemberStrength.STRONGER) {
evolutionChance = 1; evolutionChance = 1;
} else { } else {
const maxLevelDiff = this.getStrengthLevelDiff(strength); const maxLevelDiff = this.getStrengthLevelDiff(strength); //The maximum distance from the evolution level tolerated for the mon to not evolve
const minChance: number = 0.875 - 0.125 * strength; const minChance: number = 0.875 - 0.125 * strength;
evolutionChance = Math.min(minChance + easeInFunc(Math.min(level - ev.level, maxLevelDiff) / maxLevelDiff) * (1 - minChance), 1); evolutionChance = Math.min(minChance + easeInFunc(Math.min(level - ev.level, maxLevelDiff) / maxLevelDiff) * (1 - minChance), 1);
@ -735,11 +753,6 @@ export default class PokemonSpecies extends PokemonSpeciesForm implements Locali
evolutionChance = Math.min(0.65 * easeInFunc(Math.min(Math.max(level - evolutionLevel, 0), preferredMinLevel) / preferredMinLevel) + 0.35 * easeOutFunc(Math.min(Math.max(level - evolutionLevel, 0), preferredMinLevel * 2.5) / (preferredMinLevel * 2.5)), 1); evolutionChance = Math.min(0.65 * easeInFunc(Math.min(Math.max(level - evolutionLevel, 0), preferredMinLevel) / preferredMinLevel) + 0.35 * easeOutFunc(Math.min(Math.max(level - evolutionLevel, 0), preferredMinLevel * 2.5) / (preferredMinLevel * 2.5)), 1);
} }
} }
/* (Most) Trainers shouldn't be using unevolved Pokemon by the third gym leader / wave 80. Exceptions to this include Breeders, whose large teams are balanced by the use of weaker pokemon */
if (currentWave >= 80 && forTrainer && strength > PartyMemberStrength.WEAKER) {
evolutionChance = 1;
noEvolutionChance = 0;
}
if (evolutionChance > 0) { if (evolutionChance > 0) {
if (isRegionalEvolution) { if (isRegionalEvolution) {