103 lines
3.3 KiB
Rust
103 lines
3.3 KiB
Rust
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pub enum StandardSkills {
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Acrobatics,
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AnimalHandling,
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Arcana,
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Athletics,
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Deception,
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History,
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Insight,
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Intimidation,
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Investigation,
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Medicine,
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Nature,
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Perception,
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Performance,
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Persuasion,
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Religion,
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SleightOfHand,
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Stealth,
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Survival,
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StrengthSave,
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DexteritySave,
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ConstitutionSave,
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IntelligenceSave,
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WisdomSave,
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CharismaSave
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}
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#[derive(PartialEq, Clone, Copy)]
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pub enum SkillProficiency {
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None,
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Proficient,
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Expert,
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}
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impl Default for SkillProficiency {
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fn default() -> Self { SkillProficiency::None }
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}
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pub trait Stat {
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fn score(&self) -> u8;
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fn modifier(&self) -> i8 {
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return (self.score() as i8 / 2) - 5;
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}
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fn skill_modifier(&self, proficiency_modifier: u8, proficiency: SkillProficiency) -> i8 {
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let modifier : i8 = self.modifier();
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let expert = proficiency == SkillProficiency::Expert; // are they an expert?
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let proficient = expert || proficiency == SkillProficiency::Proficient; // are they at least proficient?
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let proficiency_boost : u8 = proficiency_modifier * proficient as u8;
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let expertise_boost : u8 = proficiency_modifier * expert as u8;
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return modifier + (proficiency_boost as i8) + (expertise_boost as i8);
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}
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}
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pub trait StatSet {
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fn strength(&self) -> &impl Stat;
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fn dexterity(&self) -> &impl Stat;
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fn constitution(&self) -> &impl Stat;
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fn intelligence(&self) -> &impl Stat;
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fn wisdom(&self) -> &impl Stat;
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fn charisma(&self) -> &impl Stat;
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}
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pub trait ProficiencySet {
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fn get_proficiency(&self, skill: StandardSkills) -> SkillProficiency;
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fn get_proficiency_modifier(&self) -> u8;
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}
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pub trait Skill {
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fn select_stat<'a>(&self, set: &'a impl StatSet) -> &'a dyn Stat;
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fn get_modifier(&self, set: &impl StatSet, proficiency: SkillProficiency, proficiency_modifier: u8) -> i8 {
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return self.select_stat(set).skill_modifier(proficiency_modifier, proficiency);
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}
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fn is_save(&self) -> bool;
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}
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impl Skill for StandardSkills {
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fn select_stat<'a>(&self, set: &'a impl StatSet) -> &'a dyn Stat {
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match self {
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StandardSkills::DexteritySave | StandardSkills::Acrobatics | StandardSkills::SleightOfHand | StandardSkills::Stealth => set.dexterity(),
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StandardSkills::StrengthSave | StandardSkills::Athletics => set.strength(),
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StandardSkills::ConstitutionSave => set.constitution(),
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StandardSkills::IntelligenceSave | StandardSkills::Arcana | StandardSkills::History | StandardSkills::Investigation | StandardSkills::Nature | StandardSkills::Religion => set.intelligence(),
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StandardSkills::WisdomSave | StandardSkills::AnimalHandling | StandardSkills::Insight | StandardSkills::Medicine | StandardSkills::Perception | StandardSkills::Survival => set.wisdom(),
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StandardSkills::CharismaSave | StandardSkills::Deception | StandardSkills::Intimidation | StandardSkills::Performance | StandardSkills::Persuasion => set.charisma(),
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}
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}
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fn is_save(&self) -> bool {
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return matches!(self, StandardSkills::StrengthSave | StandardSkills::DexteritySave | StandardSkills::ConstitutionSave | StandardSkills::IntelligenceSave | StandardSkills::WisdomSave | StandardSkills::CharismaSave);
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}
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}
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impl Stat for u8 {
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fn score(&self) -> u8 {
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return *self;
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}
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}
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