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use std::collections::HashMap;
use serde::{de, Deserialize, Serialize, Deserializer};
use crate::{
assemblage::Assemblage,
componentwrapper::PreEntity,
Template,
template::EntityType,
Result as AnyResult,
aerr,
ItemId,
item::Item,
item::ItemAction,
parameter::Parameter,
Sprite
};
#[derive(Default, Clone)]
pub struct Encyclopedia {
assemblages: HashMap<EntityType, Assemblage>,
items: HashMap<ItemId, Item>
}
impl Encyclopedia {
pub fn validate(&self) -> AnyResult<()> {
for (name, assemblage) in self.assemblages.iter() {
assemblage.validate().map_err(|e| aerr!("invalid assemblage {}: {}", name.0, e))?;
}
Ok(())
}
pub fn construct(&self, template: &Template) -> AnyResult<PreEntity> {
let assemblage = self.assemblages
.get(&template.name)
.ok_or(aerr!("unknown assemblage name: '{:?}' in {:?}", template.name, template))?;
assemblage.instantiate(template)
}
pub fn get_item(&self, id: &ItemId) -> Option<Item> {
self.items.get(id).map(|item| item.clone())
}
pub fn merge(mut self, mut other: Encyclopedia) -> Encyclopedia {
self.assemblages.extend(other.assemblages.drain());
self.items.extend(other.items.drain());
self
}
}
impl<'de> Deserialize<'de> for Encyclopedia {
fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
where D: Deserializer<'de> {
let EncyclopediaSave{mut assemblages, items, templates} = EncyclopediaSave::deserialize(deserializer)?;
let mut itemdefs = HashMap::new();
for (id, item) in items.into_iter(){
let sprite = item.sprite.unwrap_or(Sprite(id.clone()));
let name = item.name.unwrap_or(id.clone());
let ent = item.entity.unwrap_or_else(||{
let enttyp = EntityType(id.clone());
assemblages.insert(enttyp.clone(), Assemblage::new_item(id.clone(), sprite, name.clone()));
Template::from_entity_type(enttyp)
});
itemdefs.insert(ItemId(id), Item{
ent,
name,
action: item.action.unwrap_or(ItemAction::None)
});
}
for (templatename, (baseent, args)) in templates {
let assemblage= assemblages.get(&baseent)
.ok_or(de::Error::custom(format!("template name '{:?}' does not point to not an assemblage", baseent)))?
.apply_arguments(args);
assemblages.insert(templatename, assemblage);
}
Ok(Encyclopedia{
assemblages,
items: itemdefs
})
}
}
#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
struct ItemSave {
sprite: Option<Sprite>,
name: Option<String>,
entity: Option<Template>,
action: Option<ItemAction>
}
#[derive(Debug, Clone, PartialEq, Deserialize)]
struct EncyclopediaSave {
#[serde(default)]
assemblages: HashMap<EntityType, Assemblage>,
#[serde(default)]
items: HashMap<String, ItemSave>,
#[serde(default)]
templates: HashMap<EntityType, (EntityType, HashMap<String, Parameter>)>
}
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