skara-brae-server/crates/sb-core/src/spells.rs

118 lines
3.3 KiB
Rust

use crate::constants;
use serde::{Deserialize, Serialize};
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct SpellDef {
pub id: String,
pub code: String,
pub name: String,
pub caster_class: String,
pub spell_level: i32,
pub spell_points: i32,
pub range: String,
pub duration: String,
pub description: String,
pub combat_effect: String,
pub combat_damage_min: i32,
pub combat_damage_max: i32,
pub heal_min: i32,
pub heal_max: i32,
}
const SPELLS_JSON: &str = include_str!("../../../../skara-brae-common/data/spells/spells.json");
pub fn load_spells() -> Vec<SpellDef> {
serde_json::from_str(SPELLS_JSON).expect("failed to parse spells.json")
}
pub fn class_for_spells(class: &str) -> &str {
if class == "mage" { "magician" } else { class }
}
pub fn spells_for_class(class: &str, spell_level: i32) -> Vec<&'static SpellDef> {
let spell_class = class_for_spells(class);
ALL_SPELLS
.iter()
.filter(|s| s.caster_class == spell_class && s.spell_level <= spell_level)
.collect()
}
pub fn find_spell(id: &str) -> Option<&'static SpellDef> {
ALL_SPELLS.iter().find(|s| s.id == id)
}
pub fn spell_learn_cost(spell_level: i32) -> i32 {
if (constants::MIN_SPELL_LEVEL..=constants::MAX_SPELL_LEVEL).contains(&spell_level) {
constants::SPELL_LEARN_COST_BY_LEVEL[(spell_level - 1) as usize]
} else {
constants::SPELL_LEARN_COST_UNKNOWN_LEVEL
}
}
pub fn caster_spell_level(character_level: i32) -> i32 {
(character_level / constants::CASTER_LEVELS_PER_SPELL_LEVEL) + 1
}
pub fn max_spell_points(class: &str, level: i32) -> i32 {
let spell_class = class_for_spells(class);
let spell_level = match spell_class {
"conjurer" | "magician" | "sorcerer" | "wizard" => caster_spell_level(level),
_ => 0,
};
spell_level * constants::SPELL_POINTS_PER_SPELL_LEVEL
}
pub fn is_caster_class(class: &str) -> bool {
matches!(
class_for_spells(class),
"conjurer" | "magician" | "sorcerer" | "wizard"
)
}
pub fn caster_classes() -> &'static [&'static str] {
&["conjurer", "magician", "sorcerer", "wizard"]
}
use std::sync::LazyLock;
static ALL_SPELLS: LazyLock<Vec<SpellDef>> = LazyLock::new(load_spells);
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn caster_spell_level_spot_values() {
assert_eq!(caster_spell_level(1), 1);
assert_eq!(caster_spell_level(2), 1);
assert_eq!(caster_spell_level(3), 2);
assert_eq!(caster_spell_level(6), 3);
assert_eq!(caster_spell_level(100), 34);
}
#[test]
fn spell_learn_cost_guard_spot_checks() {
assert_eq!(
spell_learn_cost(0),
constants::SPELL_LEARN_COST_UNKNOWN_LEVEL
);
assert_eq!(
spell_learn_cost(-1),
constants::SPELL_LEARN_COST_UNKNOWN_LEVEL
);
assert_eq!(
spell_learn_cost(8),
constants::SPELL_LEARN_COST_UNKNOWN_LEVEL
);
for level in constants::MIN_SPELL_LEVEL..=constants::MAX_SPELL_LEVEL {
assert_eq!(
spell_learn_cost(level),
constants::SPELL_LEARN_COST_BY_LEVEL[(level - 1) as usize]
);
}
}
#[test]
fn spells_json_parses() {
assert!(!load_spells().is_empty());
}
}