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|
use std::collections::{HashMap, HashSet};
use serde::{Serialize, Deserialize};
use strum_macros::{EnumString, Display};
use specs::Builder;
use std::str::FromStr;
use crate::{
PlayerId,
RoomId,
ItemId,
Sprite,
playerstate::RoomPos,
components::{
AttackType,
Clan,
Flag,
Trigger
},
parameter::{Parameter},
fromtoparameter::FromToParameter,
Timestamp,
Template,
Pos,
Result,
aerr,
errors
};
macro_rules! components {
(post: $($comp: ident ($($paramname: ident : $paramtype: ty, $extraction: expr),*) $creation: expr);*;) => {
#[derive(Clone)]
pub enum ComponentWrapper{
$(
$comp(crate::components::$comp),
)*
}
impl ComponentWrapper {
pub fn build<A: Builder>(&self, builder: A ) -> A {
match self.clone() {
$(
Self::$comp(c) => builder.with(c),
)*
}
}
pub fn load_component(comptype: ComponentType, mut parameters: HashMap<&str, Parameter>) -> Result<Self> {
#[allow(unused_imports, unreachable_code)]
match comptype {
$(
ComponentType::$comp => Ok(Self::$comp({
use crate::components::$comp;
$(
let $paramname = {
let param = parameters
.remove(stringify!($paramname))
.ok_or(aerr!("required parameter '{}'not found", stringify!($paramname)))?;
<$paramtype>::from_parameter(param.clone())
.ok_or(aerr!("parameter {} is invalid type: {:?} is not of type {}", stringify!($paramname), param, stringify!($paramtype)))?
};
)*
$creation
})),
)*
}
}
}
#[derive(Debug, PartialEq, Eq, Clone, Copy, Serialize, Deserialize, EnumString, Display)]
pub enum ComponentType {
$(
$comp,
)*
}
impl ComponentType {
pub fn parameters(&self) -> Vec<&str> {
match self {
$(
Self::$comp => {
#[allow(unused_mut)]
let mut h = Vec::new();
$(
h.push(stringify!($paramname));
)*
h
},
)*
}
}
}
use specs::{World, Entity, WorldExt};
pub fn extract_parameter(typ: ComponentType, parameter: &str, world: &World, ent: Entity) -> Option<Parameter> {
match typ {
$(
#[allow(path_statements)]
ComponentType::$comp => {
$(
if parameter == stringify!($paramname) {
#[allow(unreachable_code, non_snake_case)]
return Some({
let components = world.read_component::<crate::components::$comp>();
#[allow(unused_variables)]
let $comp = components.get(ent)?;
#[allow(unused_variables)]
let extracted: $paramtype = ({$extraction});
return Some(extracted.to_parameter())
})
}
)*
None::<Parameter>
}
)*
}
}
};
// no parameters: make unit struct
(pre: ($($done: tt)*) $comp: ident; $($tail:tt)*) => {
components!(pre: ($($done)* $comp () {$comp};) $($tail)*);
};
// struct is just parameters
(pre: ($($done: tt)*) $comp: ident ($($paramname: ident : $paramtype: ty),*);$($tail:tt)*) => {
components!(pre: ($($done)* $comp ($($paramname : $paramtype, {$comp.$paramname.clone()}),*) {$comp{$($paramname,)*}};) $($tail)*);
};
// full definition minus variable exraction
(pre: ($($done: tt)*) $comp: ident ($($paramname: ident : $paramtype: ty),*) $creation: expr; $($tail:tt)*) => {
components!(pre: ($($done)* $comp ($($paramname : $paramtype, {None?}),*) $creation;) $($tail)*);
};
// full definition
(pre: ($($done: tt)*) $comp: ident ($($paramname: ident : $paramtype: ty, ($extraction: expr)),*) $creation: expr; $($tail:tt)*) => {
components!(pre: ($($done)* $comp ($($paramname : $paramtype, $extraction),*) $creation;) $($tail)*);
};
(pre: ($($done: tt)*)) => {
components!(post: $($done)*);
};
(all: $($all: tt)*) => {components!(pre: () $($all)*);};
}
components!(all:
Visible (name: String, sprite: Sprite, height: f64);
Movable (cooldown: i64);
Player (name: PlayerId) {Player::new(name)};
Item (item: ItemId) {Item(item)};
Inventory () {panic!("inventory from parameters not implemented")};
Health (health: i64, maxhealth: i64);
Serialise () {panic!("serialise from parameters not implemented")};
RoomExit (destination: RoomId, dest_pos: String) {
RoomExit {
destination,
dest_pos: if dest_pos.is_empty() {
RoomPos::Unknown
} else {
RoomPos::Name(dest_pos)
}
}
};
Trap (damage: i64) {Trap{attack: AttackType::Attack(damage)}};
Fighter (damage: i64, cooldown: i64) {Fighter{attack: AttackType::Attack(damage), cooldown, range: 1}};
Healing (delay: i64, health: i64) {Healing{delay, health, next_heal: None}};
Autofight () {Autofight::default()};
MonsterAI (move_chance: f64, view_distance: i64, homesickness: f64);
Spawner (amount: i64, clan: String, template: Template, radius: i64) {
Spawner{
amount: amount as usize,
clan: Clan{name: clan},
template: template,
saturated: false,
radius
}
};
Clan (name: String);
Home (home: Pos);
Faction (faction: String) {Faction::from_str(faction.as_str()).ok_or(aerr!("invalid faction name"))?};
Interactable (typ: String, arg: Parameter) {
Interactable::parse_from_parameter(&typ, &arg).ok_or(aerr!("invalid interaction {:?} {:?}", typ, arg))?
};
Loot (loot: Vec<(Template, f64)>);
Timer (trigger: Trigger, delay: i64, spread: f64, target_time: Option<Timestamp>);
Equipment () {panic!("equipment from parameters not implemented")};
TimeOffset (dtime: i64);
Flags (flags: Vec<String>) {
Flags(
flags
.iter()
.map(|s| Flag::from_str(s).ok())
.collect::<Option<HashSet<Flag>>>().ok_or(aerr!("invalid flag name"))?
)
};
Ear () {Ear::default()};
Build (obj: Template);
Whitelist (allowed: HashMap<String, HashSet<PlayerId>>);
Minable (trigger: String, total: i64) {
Minable {
trigger: Trigger::from_str(&trigger).map_err(|_|aerr!("invalid trigger name {}", trigger))?,
progress: 0,
total
}
};
Removed;
LootHolder () {panic!("LootHolder from parameters not implemented")};
OnSpawn (trigger: String) {
OnSpawn {
trigger: Trigger::from_str(&trigger).map_err(|_|aerr!("invalid trigger name {}", trigger))?
}
};
Substitute (into: Template);
TriggerBox (triggers: Vec<String>) {
TriggerBox {
messages: triggers.iter().map(|s|
Trigger::from_str(s).map_err(|_|aerr!("invalid trigger name {}", s))
).collect::<std::result::Result<Vec<Trigger>, std::boxed::Box<errors::AError>>>()?
}
};
);
pub type PreEntity = Vec<ComponentWrapper>;
|
