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1st update of MonsterAI can't take RunState as it's not embedded yet #172

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1st update of MonsterAI can't take RunState as it's not embedded yet #172

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5 changes: 2 additions & 3 deletions book/src/chapter_7.md
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Original file line number Diff line number Diff line change
Expand Up @@ -614,7 +614,7 @@ Now we modify the `monster_ai_system`. There's a bit of clean-up here, and the "

```rust
use specs::prelude::*;
use super::{Viewshed, Monster, Map, Position, WantsToMelee, RunState};
use super::{Viewshed, Monster, Map, Position, WantsToMelee};
use rltk::{Point};

pub struct MonsterAI {}
Expand All @@ -624,15 +624,14 @@ impl<'a> System<'a> for MonsterAI {
type SystemData = ( WriteExpect<'a, Map>,
ReadExpect<'a, Point>,
ReadExpect<'a, Entity>,
ReadExpect<'a, RunState>,
Entities<'a>,
WriteStorage<'a, Viewshed>,
ReadStorage<'a, Monster>,
WriteStorage<'a, Position>,
WriteStorage<'a, WantsToMelee>);

fn run(&mut self, data : Self::SystemData) {
let (mut map, player_pos, player_entity, runstate, entities, mut viewshed, monster, mut position, mut wants_to_melee) = data;
let (mut map, player_pos, player_entity, entities, mut viewshed, monster, mut position, mut wants_to_melee) = data;

for (entity, mut viewshed,_monster,mut pos) in (&entities, &mut viewshed, &monster, &mut position).join() {
let distance = rltk::DistanceAlg::Pythagoras.distance2d(Point::new(pos.x, pos.y), *player_pos);
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