530 lines
21 KiB
Rust
530 lines
21 KiB
Rust
use std::collections::BTreeMap;
|
|
use std::sync::{Arc, Mutex, RwLock, atomic};
|
|
use std::io::Read;
|
|
|
|
use crate::render;
|
|
use crate::util;
|
|
use crate::globals::Time;
|
|
|
|
use mlua::prelude::LuaError::RuntimeError;
|
|
use mlua::ToLua;
|
|
|
|
fn debug_str(v: &mlua::Value) -> String {
|
|
match v {
|
|
mlua::Value::String(s) => s.to_str().map_or(format!("{:?}", v), |s| s.to_string()),
|
|
mlua::Value::Integer(i) => format!("{}", i),
|
|
_ => format!("{:?}", v),
|
|
}
|
|
}
|
|
|
|
#[derive(Debug)]
|
|
struct ComponentID {
|
|
id: ecs::component::ID,
|
|
idstr: String,
|
|
}
|
|
impl mlua::UserData for ComponentID {}
|
|
|
|
#[derive(Debug)]
|
|
struct ScriptedEntityClass {
|
|
name: String,
|
|
cls: mlua::RegistryKey,
|
|
components: BTreeMap<String, Box<dyn ecs::Component>>,
|
|
}
|
|
|
|
#[derive(Debug)]
|
|
struct ScriptedEntityClassID {
|
|
name: String,
|
|
}
|
|
impl mlua::UserData for ScriptedEntityClassID {}
|
|
|
|
static GLOBAL_SCRIPTED_ENTITY_ID: atomic::AtomicU64 = atomic::AtomicU64::new(0);
|
|
|
|
#[derive(Debug)]
|
|
enum ScriptedEntityStatus {
|
|
QueuedForCreation(BTreeMap<String, Box<dyn ecs::Component>>),
|
|
Exists(ecs::EntityID),
|
|
FailedToCreate,
|
|
}
|
|
|
|
#[derive(Debug)]
|
|
struct ScriptedEntity {
|
|
class_name: String,
|
|
internal_id: u64,
|
|
status: ScriptedEntityStatus,
|
|
table: mlua::RegistryKey,
|
|
}
|
|
|
|
impl ScriptedEntity {
|
|
fn new(
|
|
class_name: String,
|
|
table: mlua::RegistryKey,
|
|
components: BTreeMap<String, Box<dyn ecs::Component>>,
|
|
) -> Self {
|
|
let internal_id = GLOBAL_SCRIPTED_ENTITY_ID.fetch_add(1, atomic::Ordering::SeqCst) + 1;
|
|
Self {
|
|
class_name,
|
|
internal_id,
|
|
status: ScriptedEntityStatus::QueuedForCreation(components),
|
|
table,
|
|
}
|
|
}
|
|
}
|
|
|
|
#[derive(Debug, Clone)]
|
|
struct ScriptedEntityID {
|
|
internal_id: u64,
|
|
}
|
|
impl mlua::UserData for ScriptedEntityID {}
|
|
|
|
pub struct WorldContext {
|
|
// TODO(q3k): this leaks memory, right?
|
|
lua: &'static mlua::Lua,
|
|
classes: Arc<Mutex<BTreeMap<String, ScriptedEntityClass>>>,
|
|
instances: Arc<RwLock<InstanceData>>,
|
|
}
|
|
|
|
#[derive(Debug)]
|
|
struct InstanceData {
|
|
ecs: BTreeMap<ecs::EntityID, ScriptedEntity>,
|
|
internal_to_ecs: BTreeMap<u64, ecs::EntityID>,
|
|
queue: Vec<ScriptedEntity>,
|
|
}
|
|
|
|
impl InstanceData {
|
|
fn get_mut(&mut self, internal: u64) -> Option<&mut ScriptedEntity> {
|
|
if let Some(eid) = self.internal_to_ecs.get(&internal) {
|
|
if let Some(se) = self.ecs.get_mut(eid) {
|
|
return Some(se);
|
|
}
|
|
panic!("Corrupt InstanceData: internal id {} found in internal_to_ecs, bot not in ecs", internal);
|
|
}
|
|
|
|
for (i, el) in self.queue.iter().enumerate() {
|
|
if el.internal_id != internal {
|
|
continue
|
|
}
|
|
return Some(&mut self.queue[i])
|
|
}
|
|
None
|
|
}
|
|
fn get(&self, internal: u64) -> Option<&ScriptedEntity> {
|
|
if let Some(eid) = self.internal_to_ecs.get(&internal) {
|
|
if let Some(se) = self.ecs.get(eid) {
|
|
return Some(se);
|
|
}
|
|
panic!("Corrupt InstanceData: internal id {} found in internal_to_ecs, bot not in ecs", internal);
|
|
}
|
|
|
|
for el in self.queue.iter() {
|
|
if el.internal_id != internal {
|
|
continue
|
|
}
|
|
return Some(&el)
|
|
}
|
|
None
|
|
}
|
|
}
|
|
|
|
impl WorldContext {
|
|
pub fn new(world: &ecs::World) -> Self {
|
|
let lua = mlua::Lua::new().into_static();
|
|
log::info!("Lua WorldContext created.");
|
|
lua.globals().set("print", lua.create_function(|_, vals: mlua::Variadic<mlua::Value>| -> mlua::Result<()> {
|
|
let msg: Vec<String> = vals.iter().map(|val| debug_str(val)).collect();
|
|
log::info!("[Lua] {}", msg.join("\t"));
|
|
Ok(())
|
|
}).unwrap()).unwrap();
|
|
|
|
let classes = Arc::new(Mutex::new(BTreeMap::new()));
|
|
let instances = Arc::new(RwLock::new(InstanceData {
|
|
ecs: BTreeMap::new(),
|
|
internal_to_ecs: BTreeMap::new(),
|
|
queue: Vec::new(),
|
|
}));
|
|
|
|
lua.globals().set("sent", lua.create_table().unwrap()).unwrap();
|
|
|
|
let loaders = lua.create_table().unwrap();
|
|
loaders.set(1, lua.create_function(move |lua, name: String| -> mlua::Result<mlua::Value> {
|
|
log::debug!("require({})", name);
|
|
let path = name.clone();
|
|
match util::file::resource(path.clone()) {
|
|
Err(e) => Ok(format!("util::file::resource({}) failed: {:?}", path, e).to_lua(&lua)?),
|
|
Ok(mut reader) => {
|
|
let mut data: Vec<u8> = Vec::new();
|
|
match reader.read_to_end(&mut data) {
|
|
Err(e) => Ok(format!("util::file::reasource read failed: {:?}", e).to_lua(&lua)?),
|
|
Ok(_) => lua.load(&data).set_name(&path)?.into_function()?.to_lua(&lua),
|
|
}
|
|
},
|
|
}
|
|
}).unwrap()).unwrap();
|
|
lua.globals().get::<_, mlua::Table>("package").unwrap().set("loaders", loaders).unwrap();
|
|
|
|
Self {
|
|
lua,
|
|
classes,
|
|
instances,
|
|
}
|
|
}
|
|
|
|
fn global_set_components(&self, world: &ecs::World) -> mlua::Result<()> {
|
|
let globals = self.lua.globals();
|
|
let components = match globals.get("components") {
|
|
Ok(c) => c,
|
|
Err(_) => {
|
|
let components = self.lua.create_table()?;
|
|
globals.set("components", components.clone())?;
|
|
components
|
|
}
|
|
};
|
|
components.set_metatable(None);
|
|
for (idstr, id, bindings) in world.get_component_lua_bindings() {
|
|
let methods = bindings.globals(&self.lua);
|
|
methods.set("__component_component_id", ComponentID {
|
|
id,
|
|
idstr: idstr.clone(),
|
|
});
|
|
components.set(idstr, methods);
|
|
}
|
|
Ok(())
|
|
}
|
|
|
|
/// Registers resourcemanager global in Lua, scoped to scope.
|
|
// TODO(q3k): make this generic for all ECS globals.
|
|
fn scope_resourcemanager<'a, 'world, 'lua, 'scope>(
|
|
&'a self,
|
|
scope: &'a mlua::Scope<'lua, 'scope>,
|
|
world: &'world ecs::World,
|
|
) -> mlua::Result<()>
|
|
where
|
|
'world: 'scope,
|
|
'scope: 'a,
|
|
{
|
|
let globals = self.lua.globals();
|
|
let resourcemanager = self.lua.create_table()?;
|
|
globals.set("resourcemanager", resourcemanager.clone());
|
|
|
|
{
|
|
let rm = world.global::<render::resource::Manager>();
|
|
let rm = rm.get();
|
|
resourcemanager.set("get_mesh", scope.create_function(move |lua, name: String| -> mlua::Result<mlua::Value> {
|
|
match rm.by_label::<render::Mesh, _>(&name) {
|
|
None => Ok(mlua::Value::Nil),
|
|
Some(r) => Ok(r.to_lua(&lua)?),
|
|
}
|
|
})?)?;
|
|
}
|
|
{
|
|
let rm = world.global::<render::resource::Manager>();
|
|
let rm = rm.get();
|
|
resourcemanager.set("get_material", scope.create_function(move |lua, name: String| -> mlua::Result<mlua::Value> {
|
|
match rm.by_label::<render::Material, _>(&name) {
|
|
None => Ok(mlua::Value::Nil),
|
|
Some(r) => Ok(r.to_lua(&lua)?),
|
|
}
|
|
})?)?;
|
|
}
|
|
Ok(())
|
|
}
|
|
|
|
fn scope_time<'a, 'world, 'lua, 'scope>(
|
|
&'a self,
|
|
scope: &'a mlua::Scope<'lua, 'scope>,
|
|
world: &'world ecs::World,
|
|
) -> mlua::Result<()>
|
|
where
|
|
'world: 'scope,
|
|
'scope: 'a,
|
|
{
|
|
let globals = self.lua.globals();
|
|
let time = world.global::<Time>();
|
|
globals.set("time", time.get().instant());
|
|
Ok(())
|
|
}
|
|
|
|
fn scope_sent<'a, 'world, 'lua, 'scope>(
|
|
&'a self,
|
|
scope: &'a mlua::Scope<'lua, 'scope>,
|
|
world: &'world ecs::World,
|
|
) -> mlua::Result<()>
|
|
where
|
|
'world: 'scope,
|
|
'scope: 'a,
|
|
{
|
|
let globals = self.lua.globals();
|
|
{
|
|
let classes = self.classes.clone();
|
|
globals.set("__sent_register", scope.create_function(move |lua, cfg: mlua::Table| -> mlua::Result<_> {
|
|
let name: String = cfg.get("name")?;
|
|
let cls: mlua::Table = cfg.get("cls")?;
|
|
|
|
let components: mlua::Table = cfg.get("components")?;
|
|
let components: Vec<(String, Box<dyn ecs::Component>)> = components
|
|
.pairs::<mlua::Integer, mlua::AnyUserData>()
|
|
.map(|pair| match pair {
|
|
Ok((_, v)) => match world.lua_any_into_dyn::<'world, '_>(&v) {
|
|
Some(b) => Ok(b),
|
|
None => Err(RuntimeError(
|
|
format!("cfg.components type error: not a component")
|
|
)),
|
|
},
|
|
Err(err) => Err(RuntimeError(
|
|
format!("cfg.components iter error: {:?}", err)
|
|
)),
|
|
})
|
|
.collect::<mlua::Result<Vec<(String, Box<dyn ecs::Component>)>>>()?;
|
|
let components: BTreeMap<String, Box<dyn ecs::Component>> = components.into_iter().collect();
|
|
|
|
log::info!("Registering Scripted Entity class {} at {:?}", name, cls);
|
|
log::info!("Components: {:?}", components);
|
|
|
|
let sec = ScriptedEntityClass {
|
|
name: name.clone(),
|
|
cls: lua.create_registry_value(cls)?,
|
|
components,
|
|
};
|
|
classes.lock().unwrap().insert(name.clone(), sec);
|
|
Ok(ScriptedEntityClassID {
|
|
name: name,
|
|
})
|
|
})?)?;
|
|
}
|
|
{
|
|
let classes = self.classes.clone();
|
|
let instances = self.instances.clone();
|
|
globals.set("__sent_components_index", scope.create_function(move |lua, args: (mlua::Table, mlua::Value)| -> mlua::Result<mlua::Value> {
|
|
let table = args.0;
|
|
let key: String = match args.1 {
|
|
mlua::Value::String(key) => key.to_str()?.to_string(),
|
|
_ => return Ok(mlua::Value::Nil),
|
|
};
|
|
let seid: ScriptedEntityID = table.raw_get("__sent_id")?;
|
|
|
|
let classes = classes.lock().unwrap();
|
|
let instances = instances.read().unwrap();
|
|
|
|
// Get ScriptedEntity that the user requested this component for.
|
|
let se = match instances.get(seid.internal_id) {
|
|
Some(se) => se,
|
|
None => {
|
|
// This shouldn't really happen. Should we panic here? Probably not, as the
|
|
// Lua side could do some (accidentally) nasty things that could cause it,
|
|
// especially on reloads.
|
|
log::warn!("Lua code requested components for unknown entity {}", seid.internal_id);
|
|
return Err(RuntimeError(format!("unknown entity {}", seid.internal_id)));
|
|
}
|
|
};
|
|
match &se.status {
|
|
ScriptedEntityStatus::QueuedForCreation(c) => match c.get(&key) {
|
|
Some(component) => component.clone().lua_userdata(&lua).ok_or(RuntimeError(format!("lua_userdata not implemented"))),
|
|
None => Err(RuntimeError(format!("unknown component {} in queued entity", key))),
|
|
},
|
|
ScriptedEntityStatus::Exists(ecsid) => match classes.get(&se.class_name) {
|
|
Some(sec) => match sec.components.get(&key) {
|
|
Some(component) => {
|
|
let cid = component.id();
|
|
let component = match world.component_get_dyn_cloned(*ecsid, cid) {
|
|
Some(component) => component,
|
|
None => {
|
|
return Err(RuntimeError(format!("unknown component {:?} in ecs entity {}", cid, ecsid)));
|
|
},
|
|
};
|
|
component.lua_userdata(&lua).ok_or(RuntimeError(format!("lua_userdata not implemented")))
|
|
},
|
|
None => Err(RuntimeError(format!("unknown component {} in class", key))),
|
|
},
|
|
None => Err(RuntimeError(format!("unknown class {}", se.class_name))),
|
|
},
|
|
ScriptedEntityStatus::FailedToCreate => return Err(RuntimeError(format!("cannot get component on failed entity"))),
|
|
}
|
|
})?)?;
|
|
}
|
|
{
|
|
let classes = self.classes.clone();
|
|
let instances = self.instances.clone();
|
|
globals.set("__sent_components_newindex", scope.create_function(move |lua, args: (mlua::Table, mlua::Value, mlua::AnyUserData)| -> mlua::Result<mlua::Value> {
|
|
let table = args.0;
|
|
let key: String = match args.1 {
|
|
mlua::Value::String(key) => key.to_str()?.to_string(),
|
|
_ => return Ok(mlua::Value::Nil),
|
|
};
|
|
let value = args.2;
|
|
let seid: ScriptedEntityID = table.raw_get("__sent_id")?;
|
|
|
|
let classes = classes.lock().unwrap();
|
|
let mut instances = instances.write().unwrap();
|
|
|
|
let se = match instances.get_mut(seid.internal_id) {
|
|
Some(se) => se,
|
|
None => {
|
|
log::warn!("Lua code requested components for unknown entity {}", seid.internal_id);
|
|
return Err(RuntimeError(format!("unknown entity {}", seid.internal_id)));
|
|
}
|
|
};
|
|
let ecsid = match &mut se.status {
|
|
ScriptedEntityStatus::QueuedForCreation(c) => {
|
|
// Queued for creation, update in queue instead of in ECS.
|
|
let component: &Box<dyn ecs::Component> = match c.get(&key) {
|
|
Some(c) => c,
|
|
None => return Ok(mlua::Value::Nil),
|
|
};
|
|
let component_value = match component.lua_fromuserdata(&value) {
|
|
Some(cv) => cv,
|
|
None => return Err(RuntimeError(format!("unimplemented lua_fromuserdata"))),
|
|
};
|
|
c.insert(key, component_value);
|
|
return Ok(mlua::Value::Nil);
|
|
},
|
|
ScriptedEntityStatus::Exists(ecsid) => *ecsid,
|
|
ScriptedEntityStatus::FailedToCreate => return Err(RuntimeError(format!("cannot set component on failed entity"))),
|
|
};
|
|
let sec = match classes.get(&se.class_name) {
|
|
Some(sec) => sec,
|
|
None => {
|
|
log::warn!("Lua code requested components for entity {} with unknown class {}", seid.internal_id, se.class_name);
|
|
return Err(RuntimeError(format!("unknown class {}", se.class_name)));
|
|
}
|
|
};
|
|
let component: &Box<dyn ecs::Component> = match sec.components.get(&key) {
|
|
Some(c) => c,
|
|
None => return Ok(mlua::Value::Nil),
|
|
};
|
|
let component_value = match component.lua_fromuserdata(&value) {
|
|
Some(cv) => cv,
|
|
None => return Err(RuntimeError(format!("unimplemented lua_fromuserdata"))),
|
|
};
|
|
world.component_set_dyn(ecsid, component_value);
|
|
|
|
Ok(mlua::Value::Nil)
|
|
})?)?;
|
|
}
|
|
{
|
|
let classes = self.classes.clone();
|
|
let instances = self.instances.clone();
|
|
globals.set("__sent_new", scope.create_function(move |lua, args: (mlua::Table, mlua::AnyUserData)| {
|
|
let classes = classes.lock().unwrap();
|
|
|
|
let table = args.0;
|
|
let secid = args.1.borrow::<ScriptedEntityClassID>()?;
|
|
|
|
let sec = match classes.get(&secid.name) {
|
|
Some(el) => el,
|
|
None => return Err(RuntimeError(format!("lost secid {:?}", secid.name))),
|
|
};
|
|
|
|
let components: BTreeMap<String, Box<dyn ecs::Component>> = sec.components.iter().map(|(k, v)| {
|
|
(k.clone(), v.clone_dyn())
|
|
}).collect();
|
|
let sent = ScriptedEntity::new(
|
|
secid.name.clone(),
|
|
lua.create_registry_value(table.clone())?,
|
|
components,
|
|
);
|
|
let seid = ScriptedEntityID {
|
|
internal_id: sent.internal_id,
|
|
};
|
|
instances.write().unwrap().queue.push(sent);
|
|
|
|
Ok(seid)
|
|
})?)?;
|
|
}
|
|
|
|
Ok(())
|
|
}
|
|
|
|
pub fn eval_init<T>(&self, world: &ecs::World, val: T) -> mlua::Result<()>
|
|
where
|
|
T: Into<String>
|
|
{
|
|
let val: String = val.into();
|
|
self.lua.scope(move |scope| {
|
|
self.global_set_components(world)?;
|
|
self.scope_sent(scope, world)?;
|
|
self.scope_resourcemanager(scope, world)?;
|
|
self.lua.load(&val).exec()
|
|
})
|
|
}
|
|
}
|
|
|
|
impl <'system, 'lua, 'scope> ecs::System<'system> for WorldContext
|
|
where
|
|
'lua: 'scope,
|
|
'system: 'scope,
|
|
{
|
|
type SystemData = ecs::ReadWriteAll<'system>;
|
|
fn run(&mut self, sd: Self::SystemData) {
|
|
{
|
|
let instances = self.instances.clone();
|
|
let classes = self.classes.clone();
|
|
let mut instances = instances.write().unwrap();
|
|
let classes = classes.lock().unwrap();
|
|
// Lazily create enqueued entities.
|
|
if instances.queue.len() > 0 {
|
|
let queue = std::mem::replace(&mut instances.queue, Vec::new());
|
|
|
|
for mut el in queue.into_iter() {
|
|
match el.status {
|
|
ScriptedEntityStatus::QueuedForCreation(components) => {
|
|
let mut entity = sd.new_entity_lazy();
|
|
for (_, component) in components.into_iter() {
|
|
entity = entity.with_dyn(component);
|
|
}
|
|
let ecsid = entity.build(&sd);
|
|
el.status = ScriptedEntityStatus::Exists(ecsid);
|
|
log::debug!("Created sent of type {} with ECS ID {} and internal ID {}", el.class_name, ecsid, el.internal_id);
|
|
instances.internal_to_ecs.insert(el.internal_id, ecsid);
|
|
instances.ecs.insert(ecsid, el);
|
|
}
|
|
o => panic!("ScriptedEntity in queue with unexpected status {:?}", o),
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
let world: &'system ecs::World = sd.world();
|
|
{
|
|
let instances = self.instances.clone();
|
|
// Run tick functions in all entities.
|
|
self.lua.scope::<'lua, 'scope>(move |scope| {
|
|
self.global_set_components(world)?;
|
|
self.scope_sent(scope, world)?;
|
|
self.scope_resourcemanager(scope, world)?;
|
|
self.scope_time(scope, world)?;
|
|
// Copy out functions refs to release lock.
|
|
let mut tickers: Vec<(ecs::EntityID, mlua::Function)> = vec![];
|
|
{
|
|
let instances = instances.read().unwrap();
|
|
for (ecsid, sent) in instances.ecs.iter() {
|
|
let table: mlua::Table = match self.lua.registry_value(&sent.table) {
|
|
Ok(table) => table,
|
|
Err(err) => {
|
|
log::warn!("Entity {}/{} tick failed: getting tick failed: {:?}", ecsid, sent.internal_id, err);
|
|
continue;
|
|
}
|
|
};
|
|
let cb: mlua::Function = match table.raw_get("__sent_tick") {
|
|
Ok(tick) => tick,
|
|
Err(err) => {
|
|
log::warn!("Entity {}/{} tick failed: getting tick function failed: {:?}", ecsid, sent.internal_id, err);
|
|
continue;
|
|
}
|
|
};
|
|
tickers.push((*ecsid, cb));
|
|
}
|
|
}
|
|
|
|
for (ecsid, cb) in tickers.into_iter() {
|
|
match cb.call::<mlua::Value, mlua::Value>(mlua::Value::Nil) {
|
|
Ok(_) => (),
|
|
Err(err) => {
|
|
log::warn!("Entity {} tick failed: {:?}", ecsid, err);
|
|
},
|
|
}
|
|
}
|
|
Ok(())
|
|
});
|
|
}
|
|
}
|
|
}
|