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#[macro_export]
macro_rules! assemblage {
($name:ident { $($arg:ident : $argt:ident ),* } ; $( $comp:expr ),* ) => {
#[derive(Debug, Clone, Default)]
pub struct $name {$(
pub $arg : $argt
)* }
impl Assemblage for $name {
fn build<'a>(&self, mut builder: specs::EntityBuilder<'a>) -> specs::EntityBuilder<'a>{
$(
let $arg = &self.$arg;
)*
$(
builder = specs::Builder::with(builder, $comp);
)*
builder
}
#[allow(unused_variables, unused_mut)]
fn init_from_json(&mut self, mut args: Vec<serde_json::Value>, kwargs: std::collections::HashMap<&str, serde_json::Value>) {
$(
if args.len() > 0 {
let val = args.remove(0);
if let Some(actual_val) = super::unpack_json!($argt, val) {
self.$arg = actual_val;
}
}
)*
$(
if let Some(val) = kwargs.get(stringify!($arg)) {
if let Some(actual_val) = super::unpack_json!($argt, val) {
self.$arg = actual_val;
}
}
)*
}
}
}
}
#[macro_export]
macro_rules! unpack_json {
(String, $val: ident) => {
if let Some(txt) = $val.as_str(){
Some(txt.to_string())
} else {
None
}
}
}
pub trait Assemblage: Send + Sync {
fn build<'a>(&self, builder: specs::EntityBuilder<'a>) -> specs::EntityBuilder<'a>;
fn init_from_json(&mut self, args: Vec<serde_json::Value>, kwargs: std::collections::HashMap<&str, serde_json::Value>);
}
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