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use specs::{
Entities,
ReadStorage,
WriteStorage,
System,
Join,
Write
};
use crate::{
components::{
Controller,
Position,
Flags,
Flag,
Moved,
Entered,
Movable,
ControlCooldown
},
controls::{
Control
},
resources::{
Ground
},
};
pub struct Move;
impl <'a> System<'a> for Move {
type SystemData = (
Entities<'a>,
ReadStorage<'a, Controller>,
WriteStorage<'a, Position>,
ReadStorage<'a, Flags>,
Write<'a, Ground>,
WriteStorage<'a, Moved>,
WriteStorage<'a, Entered>,
ReadStorage<'a, Movable>,
WriteStorage<'a, ControlCooldown>
);
fn run(&mut self, (entities, controllers, mut positions, flags, mut ground, mut moved, mut entered, movables, mut cooldowns): Self::SystemData) {
moved.clear();
entered.clear();
for (ent, controller, mut position, movable) in (&entities, &controllers, &mut positions, &movables).join(){
if let Control::Move(direction) = &controller.control {
let newpos = position.pos + direction.to_position();
let ground_flags = ground.flags_on(newpos, &flags);
if !ground_flags.contains(&Flag::Blocking) && ground_flags.contains(&Flag::Floor) {
moved.insert(ent, Moved{from: position.pos}).expect("can't insert Moved");
ground.remove(&position.pos, ent);
position.pos = newpos;
ground.insert(newpos, ent);
for ent in ground.cells.get(&newpos).unwrap() {
let _ = entered.insert(*ent, Entered);
}
cooldowns.insert(ent, ControlCooldown{amount: movable.cooldown}).unwrap();
}
}
}
}
}
|
