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|
use specs::{
ReadStorage,
WriteStorage,
Read,
System,
Join
};
use super::super::components::{
Position,
Controller,
Blocking
};
use super::super::controls::{
Control
};
use super::super::resources::{
Size,
Floor
};
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);
}
}
_ => {}
}
}
}
}
|
