Manual AI seats for matches: host toggles empty seats, co-op allies fight heroes

src/rival.rs

@@ -196,16 +196,26 @@ impl Game {
             // attack: about two thirds of the creatures march on an enemy
             if self.rivals[k].attack_t <= 0.0 {
                 self.rivals[k].attack_t = p.attack * (0.8 + self.rng.f() * 0.4);
-                let mut targets: Vec<(u8, u32)> = vec![(0, 3)];
-                for o in &self.rivals {
-                    if o.alive && o.side != side {
-                        targets.push((o.side, 1));
+                let mut targets: Vec<(u8, u32)> = Vec::new();
+                if self.coop {
+                    if self.gate_on || self.ents.iter().any(|e| e.alive && e.hero) {
+                        targets.push((1, 3));
+                    }
+                } else {
+                    targets.push((0, 3));
+                    for o in &self.rivals {
+                        if o.alive && o.side != side && !self.is_coop_ally_side(o.side) {
+                            targets.push((o.side, 1));
+                        }
+                    }
+                    if self.has_gate() && self.gate_hp > 0.0 {
+                        targets.push((1, 1));
                     }
                 }
-                if self.has_gate() && self.gate_hp > 0.0 {
-                    targets.push((1, 1));
-                }
                 let total: u32 = targets.iter().map(|t| t.1).sum();
+                if total == 0 {
+                    continue;
+                }
                 let mut r = self.rng.next() % total;
                 let mut target = 0;
                 for (s, w) in targets {