From b98ea15acbebe8815f9316b5a8ef3393fdd1c3e6 Mon Sep 17 00:00:00 2001
From: troido <troido@protonmail.com>
Date: Tue, 3 Mar 2020 16:28:19 +0100
Subject: monsters tend to stay around their home

---
 src/systems/controlai.rs | 39 +++++++++++++++++++++++----------------
 1 file changed, 23 insertions(+), 16 deletions(-)

(limited to 'src/systems/controlai.rs')

diff --git a/src/systems/controlai.rs b/src/systems/controlai.rs
index 9d49b41..debe716 100644
--- a/src/systems/controlai.rs
+++ b/src/systems/controlai.rs
@@ -12,7 +12,8 @@ use specs::{
 
 use crate::{
 	components::{Controller, ControlCooldown, Fighter, MonsterAI, Home, Health, Position},
-	controls::{Control, Direction::{North, South, East, West}}
+	controls::{Control, Direction::{self, North, South, East, West}},
+	Pos
 };
 
 
@@ -50,15 +51,7 @@ impl <'a> System<'a> for ControlAI {
 					if closest_distance <= fighter.range {
 						controllers.insert(entity, Controller{control: Control::AttackTarget(target)}).unwrap();
 					} else {
-						let p = position.pos;
-						let t = closest_position.unwrap().pos;
-						let mut directions = Vec::new();
-						if t.x > p.x {directions.push(East);}
-						else if t.x < p.x {directions.push(West);}
-						if t.y > p.y {directions.push(South);}
-						else if t.y < p.y {directions.push(North);}
-						if !directions.is_empty() {
-							let direction = directions[rand::thread_rng().gen_range(0, directions.len())];
+						if let Some(direction) = step_to(position.pos, closest_position.unwrap().pos){
 							controllers.insert(entity, Controller{control: Control::Move(direction)}).unwrap();
 						}
 					}
@@ -66,16 +59,30 @@ impl <'a> System<'a> for ControlAI {
 				}
 			}
 			if rand::thread_rng().gen_range(0.0, 1.0) < ai.move_chance {
+				if let Some(home) = homes.get(entity) {
+					if rand::thread_rng().gen_range(0.0, 1.0) < ai.homesickness * (position.pos.distance_to(home.home) as f64) {
+						let direction = step_to(position.pos, home.home).unwrap();
+						controllers.insert(entity, Controller{control: Control::Move(direction)}).unwrap();
+						return;
+					}
+				}
 				let direction = [North, South, East, West][rand::thread_rng().gen_range(0, 4)];
 				controllers.insert(entity, Controller{control: Control::Move(direction)}).unwrap();
-// 				home = roomData.getComponent(obj, Home)
-// 				if home is not None and home.home.inRoom() and random.random() < (ai.homesickness * pathfinding.distanceBetween(obj, home.home)):
-// 					direction = pathfinding.stepTo(obj, home.home)
-// 				else: 
-// 					direction = random.choice(["north", "south", "east", "west"])
-// 				movable.direction = direction
 			}
 		}
 	}
 }
 
+fn step_to(p: Pos, t: Pos) -> Option<Direction> {
+	let mut directions = Vec::new();
+	if t.x > p.x {directions.push(East);}
+	else if t.x < p.x {directions.push(West);}
+	if t.y > p.y {directions.push(South);}
+	else if t.y < p.y {directions.push(North);}
+	if directions.is_empty() {
+		None
+	} else {
+		Some(directions[rand::thread_rng().gen_range(0, directions.len())])
+	}
+}
+
-- 
cgit