Enemies will now fight back if they're cornered. Was actually way easier than I thought.

assets/ai.json

@@ -9,7 +9,8 @@
     "have_item": 6,
     "have_healing": 7,
     "detect_enemy": 8,
-    "tough_personality": 9
+    "tough_personality": 9,
+    "cant_move": 10
   },
   "actions": [
     {
@@ -32,7 +33,8 @@
         "tough_personality": false,
         "in_combat": true,
         "have_healing": false,
-        "health_good": false
+        "health_good": false,
+        "cant_move": false
       },
       "effects": {
         "in_combat": false

gui/fsm.cpp

@@ -418,8 +418,8 @@ namespace gui {
     System::generate_paths();
     System::enemy_ai_initialize();
     System::enemy_pathing();
-    System::collision();
     System::motion();
+    System::collision();
     System::lighting();
     System::death();
   }

systems.cpp

@@ -107,6 +107,9 @@ void System::enemy_pathing() {
         map.random_walk(out, motion.random, PATHING_TOWARD);
       } else if(enemy_ai.wants_to("run_away")) {
         map.random_walk(out, motion.random, PATHING_AWAY);
+      } else {
+        motion = {0,0};
+        return; // enemy doesn't want to move
       }
 
       motion = { int(out.x - position.location.x), int(out.y - position.location.y)};
@@ -117,31 +120,38 @@ void System::enemy_pathing() {
 }
 
 
-inline void move_entity(SpatialMap &collider, Map &game_map, Position &position, Motion &motion, Entity ent) {
+void System::motion() {
+  auto& level = GameDB::current_level();
+  auto world = level.world;
+  auto map = level.map;
+  auto collider = level.collision;
+
+  world->query<Position, Motion>(
+    [&](auto ent, auto &position, auto &motion) {
+      // skip enemies that aren't moving
+      if(motion.dx == 0 && motion.dy == 0) return;
+
       Point move_to = {
         position.location.x + motion.dx,
         position.location.y + motion.dy
       };
+
       motion = {0,0}; // clear it after getting it
 
+      dbc::check(map->can_move(move_to), "Enemy pathing failed, move_to is wall.");
+
+      bool cant_move = collider->occupied(move_to);
+
+      if(auto enemy_ai = world->get_if<ai::EntityAI>(ent)) {
+        enemy_ai->set_state("cant_move", cant_move);
+      }
+
       // it's a wall, skip
-  if(!game_map.can_move(move_to)) return;
-  // there's collision skip
-  if(collider.occupied(move_to)) return;
+      if(cant_move) return;
 
       // all good, do the move
-  collider.move(position.location, move_to, ent);
+      collider->move(position.location, move_to, ent);
       position.location = move_to;
-}
-
-void System::motion() {
-  auto& level = GameDB::current_level();
-  level.world->query<Position, Motion>(
-    [&](auto ent, auto &position, auto &motion) {
-    // don't process entities that don't move
-    if(motion.dx != 0 || motion.dy != 0) {
-      move_entity(*level.collision, *level.map, position, motion, ent);
-    }
   });
 }