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use std::collections::HashMap;
use serde_json::{json, Value};
use specs::{
Component,
HashMapStorage
};
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub enum Slot {
Hand,
Body
}
impl Slot {
pub fn from_str(txt: &str) -> Option<Self> {
match txt {
"hand" => Some(Self::Hand),
"body" => Some(Self::Body),
_ => None
}
}
pub fn to_string(&self) -> String {
match self {
Self::Hand => "hand",
Self::Body => "body"
}.to_string()
}
}
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub enum Stat {
Strength,
Defence
}
impl Stat {
pub fn from_str(txt: &str) -> Option<Self> {
match txt {
"strength" => Some(Self::Strength),
"defence" => Some(Self::Defence),
_ => None
}
}
pub fn to_string(&self) -> String {
match self {
Self::Strength => "strength",
Self::Defence => "defence"
}.to_string()
}
}
#[derive(Debug, Clone, PartialEq)]
pub struct Equippable {
pub slot: Slot,
pub stats: HashMap<Stat, i64>
}
impl Equippable {
pub fn from_json(val: &Value) -> Option<Self> {
Some(Equippable{
slot: Slot::from_str(val.get("slot")?.as_str()?)?,
stats: val
.get("stats")?
.as_object()?
.into_iter()
.map(|(k, v)|
Some((Stat::from_str(k.as_str())?, v.as_i64()?))
)
.collect::<Option<HashMap<Stat, i64>>>()?
})
}
pub fn to_json(&self) -> Value {
json!({
"slot": self.slot.to_string(),
"stats": self.stats.iter().map(|(k, v)| (k.to_string(), *v)).collect::<HashMap<String, i64>>()
})
}
}
#[derive(Component, Debug, Clone)]
#[storage(HashMapStorage)]
pub struct Equipment {
pub equipment: HashMap<Slot, Option<Equippable>>
}
impl Equipment {
pub fn get_bonus(&self, stat: Stat) -> i64 {
let mut bonus = 0;
for v in self.equipment.values() {
if let Some(equippable) = v {
if let Some(s) = equippable.stats.get(&stat) {
bonus += s;
}
}
}
bonus
}
pub fn all_bonuses(&self) -> HashMap<Stat, i64> {
let mut bonuses: HashMap<Stat, i64> = HashMap::new();
for v in self.equipment.values() {
if let Some(equippable) = v {
for (stat, s) in equippable.stats.iter(){
let current: i64 = *bonuses.entry(*stat).or_insert(0);
bonuses.insert(*stat, current + s);
}
}
}
bonuses
}
}
#[cfg(test)]
mod tests {
use super::*;
use crate::hashmap;
#[test]
fn slots() {
assert_eq!(Slot::from_str("hand"), Some(Slot::Hand));
assert_eq!(Slot::from_str("body"), Some(Slot::Body));
assert_eq!(Slot::from_str("hands"), None);
assert_eq!(Slot::from_str("head"), None);
}
#[test]
fn stats() {
assert_eq!(Stat::from_str("strength"), Some(Stat::Strength));
assert_eq!(Stat::from_str("defence"), Some(Stat::Defence));
assert_eq!(Stat::from_str("hand"), None);
assert_eq!(Stat::from_str("body"), None);
assert_eq!(Stat::from_str("attack"), None);
}
#[test]
fn equippable_from_json() {
assert_eq!(
Equippable::from_json(&json!({"slot": "hand", "stats": {"strength": 10}})),
Some(Equippable {slot: Slot::Hand, stats: hashmap!(Stat::Strength => 10)})
);
}
#[test]
fn bonus_value() {
assert_eq!(
Equipment{equipment: hashmap!(
Slot::Hand => Some(Equippable{
slot: Slot::Hand,
stats: hashmap!(Stat::Strength => 15)
}),
Slot::Body => None
)}.get_bonus(Stat::Strength),
15
);
}
}
|
