Multiplayer continues after a player leaves: AI side takeover, background match while menus are open, match chat, five-tile fog start

src/fog.rs

@@ -7,6 +7,7 @@ use crate::map::*;
 use std::collections::VecDeque;
 
 const SIGHT: i32 = 6; // tiles a creature sees along open ground
+const START_LIGHT: i32 = 5; // tiles of known ground around a master's core
 const FOG_EVERY: f32 = 0.4;
 
 // explored tiles in savegames: one bit per tile, base64
@@ -91,8 +92,18 @@ impl Game {
                 }
             }
         }
+        // the master is never blind at home: the shadow starts away from the core
+        let (cx, cy) = self.map.core;
+        for dy in -START_LIGHT..=START_LIGHT {
+            for dx in -START_LIGHT..=START_LIGHT {
+                let (x, y) = (cx + 1 + dx, cy + 1 + dy);
+                if inb(x, y) {
+                    vis[idx(x, y)] = true;
+                }
+            }
+        }
         // what the creatures and towers see along open ground (walls stop the view)
-        let mut eyes: Vec<(usize, i32)> = self.ents.iter().filter(|e| e.alive && !e.held && !e.hero && e.side == 0 && !e.chained).map(|e| (e.tile(), SIGHT)).collect();
+        let mut eyes: Vec<(usize, i32)> = self.ents.iter().filter(|e| e.alive && !e.held && !e.hero && self.is_master(e.side) && !e.chained).map(|e| (e.tile(), SIGHT)).collect();
         eyes.extend(self.towers.iter().filter(|t| !t.hero).map(|t| (t.tile, t.range() as i32 + 1)));
         let mut stamp = vec![0u32; n];
         let mut q = VecDeque::new();