diff --git a/map.cc b/map.cc
index 87d2a74..7b1842c 100644
--- a/map.cc
+++ b/map.cc
@@ -1,6 +1,7 @@
 #include <iostream>
 #include <cassert>
 
+#include "agent.h"
 #include "map.h"
 
 void
@@ -22,7 +23,15 @@ tile::on_tick(void)
 }
 
 char
-tile_ground::symbol(void)
+tile::symbol(void)
+{
+	if (agent)
+		return '0' + (agent->id % 10);
+	return type_symbol();
+}
+
+char
+tile_ground::type_symbol(void)
 {
 	return '.';
 }
diff --git a/map.h b/map.h
index 6d3f8b3..369377a 100644
--- a/map.h
+++ b/map.h
@@ -13,11 +13,12 @@ public:
 
 	virtual void on_tick(void);
 
-	virtual char symbol(void) = 0;
+	char symbol(void);
+	virtual char type_symbol(void) = 0;
 };
 
 class tile_ground : public tile {
-	char symbol(void);
+	char type_symbol(void);
 };
 
 class position {