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|
use std::collections::{HashMap, HashSet};
use specs::{
ReadStorage,
WriteStorage,
Read,
Write,
Entities,
System,
Join
};
use super::components::{
Position,
Visible,
Controller,
Blocking,
Played
};
use super::controls::{
Control,
Action
};
use super::resources::{
TopView,
Size,
Floor,
Input,
Output,
NewEntities
};
use super::worldmessages::{
WorldMessage,
WorldUpdate,
FieldMessage
};
use super::assemblages::Player;
pub struct MakeFloor;
impl <'a> System<'a> for MakeFloor {
type SystemData = (Entities<'a>, Write<'a, Floor>, ReadStorage<'a, Position>);
fn run(&mut self, (entities, mut floor, positions): Self::SystemData) {
floor.cells.clear();
for (ent, pos) in (&entities, &positions).join() {
floor.cells.entry(*pos).or_insert(Vec::new()).push(ent);
}
}
}
pub struct Draw;
impl <'a> System<'a> for Draw {
type SystemData = (ReadStorage<'a, Position>, ReadStorage<'a, Visible>, Write<'a, TopView>);
fn run(&mut self, (pos, vis, mut view): Self::SystemData) {
view.cells.clear();
for (pos, vis) in (&pos, &vis).join(){
view.cells.entry(*pos).or_insert(Vec::new()).push(vis.clone());
view.cells.get_mut(pos).unwrap().sort_by(|a, b| b.height.partial_cmp(&a.height).unwrap());
}
}
}
pub struct Move;
impl <'a> System<'a> for Move {
type SystemData = (ReadStorage<'a, Controller>, WriteStorage<'a, Position>, Read<'a, Size>, ReadStorage<'a, Blocking>, Read<'a, Floor>);
fn run(&mut self, (controller, mut pos, size, blocking, floor): Self::SystemData) {
for (controller, pos) in (&controller, &mut pos).join(){
match &controller.0 {
Control::Move(direction) => {
let newpos = (*pos + direction.to_position()).clamp(Position::new(0, 0), Position::new(size.width - 1, size.height - 1));
let mut blocked = false;
for ent in floor.cells.get(&newpos).unwrap_or(&Vec::new()) {
if blocking.get(*ent).is_some(){
blocked = true;
break;
}
}
if !blocked {
pos.clone_from(&newpos);
}
}
_ => {}
}
}
}
}
pub struct ControlInput;
impl <'a> System<'a> for ControlInput {
type SystemData = (Entities<'a>, Read<'a, Input>, WriteStorage<'a, Controller>, ReadStorage<'a, Played>, Write<'a, NewEntities>);
fn run(&mut self, (entities, input, mut controllers, players, mut new): Self::SystemData) {
let mut playercontrols: HashMap<&str, Control> = HashMap::new();
let mut leaving = HashSet::new();
for action in &input.actions {
match action {
Action::Join(name) => {new.assemblages.push((Position{x:10, y:10}, Box::new(Player::new(&name))));}
Action::Leave(name) => {leaving.insert(name);}
Action::Input(name, control) => {playercontrols.insert(name, control.clone());}
}
}
for (player, entity) in (&players, &entities).join() {
if let Some(control) = playercontrols.get(player.name.as_str()){
let _ = controllers.insert(entity, Controller(control.clone()));
}
if leaving.contains(&player.name) {
let _ = entities.delete(entity);
}
}
}
}
pub struct ClearControllers;
impl <'a> System<'a> for ClearControllers {
type SystemData = (Entities<'a>, WriteStorage<'a, Controller>);
fn run(&mut self, (entities, mut controllers): Self::SystemData) {
let mut ents = Vec::new();
for (ent, _controller) in (&*entities, &controllers).join() {
ents.push(ent);
}
for ent in ents {
controllers.remove(ent);
}
}
}
pub struct View;
impl <'a> System<'a> for View {
type SystemData = (Read<'a, TopView>, Read<'a, Size>, ReadStorage<'a, Played>, Write<'a, Output>);
fn run(&mut self, (topview, size, players, mut output): Self::SystemData) {
let width = size.width;
let height = size.height;
let (values, mapping) = draw_room(&topview.cells, (width, height));
let message = WorldMessage{updates: vec![WorldUpdate::Field(FieldMessage{
width,
height,
field: values,
mapping
})]};
output.output.clear();
for player in (&players).join() {
output.output.insert(player.name.clone(), message.clone());
}
}
}
fn draw_room(cells: &HashMap<Position, Vec<Visible>>, (width, height): (i32, i32)) -> (Vec<usize>, Vec<Vec<String>>){
let size = width * height;
let mut values :Vec<usize> = Vec::with_capacity(size as usize);
let mut mapping: Vec<Vec<String>> = Vec::new();
for y in 0..height {
for x in 0..width {
let sprites: Vec<String> = match cells.get(&Position{x: x, y: y}) {
Some(sprites) => {sprites.iter().map(|v| v.sprite.clone()).collect()}
None => {vec![]}
};
values.push(
match mapping.iter().position(|x| x == &sprites) {
Some(index) => {
index
}
None => {
mapping.push(sprites);
mapping.len() - 1
}
}
)
}
}
(values, mapping)
}
|
