Test now can work the enemy AI to prototype behavior.

Makefile

@@ -22,7 +22,7 @@ tracy_build:
 	meson compile -j 10 -C builddir
 
 test: build
-	./builddir/runtests
+	./builddir/runtests "[ai-enemy]"
 
 run: build test
 	powershell "cp ./builddir/zedcaster.exe ."

ai.cpp

@@ -93,8 +93,8 @@ namespace ai {
       auto& scripts = config["scripts"];
       for(auto& [script_name, action_names] : scripts.items()) {
         std::vector<Action> the_script;
-        for(auto name : action_names) {
 
+        for(auto name : action_names) {
           check(AIMGR.actions.contains(name),
               fmt::format("ai::init(): script {} uses action {} that doesn't exist",
                 (std::string)script_name, (std::string)name));
@@ -110,6 +110,12 @@ namespace ai {
     }
   }
 
+  void check_valid_action(std::string name, std::string msg) {
+    dbc::check(AIMGR.actions.contains(name),
+        fmt::format("{} tried to access action that doesn't exist {}",
+            msg, name));
+  }
+
   State load_state(std::string state_name) {
     check(initialized, "you forgot to initialize the AI first.");
     check(AIMGR.states.contains(state_name), fmt::format(
@@ -158,8 +164,8 @@ namespace ai {
     return &AIMGR.profile;
   }
 
-
   bool EntityAI::wants_to(std::string name) {
+    ai::check_valid_action(name, "EntityAI::wants_to");
     return plan.script[0].name == name;
   }
 

ai.hpp

@@ -27,6 +27,8 @@ namespace ai {
     void set_state(std::string name, bool setting);
 
     void update();
+
+    void dump();
   };
 
   struct AIManager {
@@ -55,4 +57,5 @@ namespace ai {
 
   /* Mostly used for debugging and validation. */
   AIProfile* profile();
+  void check_valid_action(std::string name, std::string msg);
 }

ai_debug.cpp

@@ -56,4 +56,8 @@ namespace ai {
 
     return start;
   }
+
+  void EntityAI::dump() {
+    dump_script(script, start, plan.script);
+  }
 }

assets/ai.json

@@ -28,6 +28,7 @@
       "name": "kill_enemy",
       "cost": 5,
       "needs": {
+        "health_good": true,
         "no_more_enemies": false,
         "enemy_found": true,
         "enemy_dead": false
@@ -54,11 +55,24 @@
       "needs": {
         "have_item": true,
         "have_healing": true,
+        "in_combat": false,
         "health_good": false
       },
       "effects": {
         "health_good": true
       }
+    },
+    {
+      "name": "run_away",
+      "cost": 0,
+      "needs": {
+        "in_combat": true,
+        "have_healing": false,
+        "health_good": false
+      },
+      "effects": {
+        "in_combat": false
+      }
     }
   ],
   "states": {
@@ -102,6 +116,6 @@
       "collect_items",
       "use_healing"],
     "Enemy::actions":
-      ["find_enemy", "kill_enemy"]
+      ["find_enemy", "kill_enemy", "run_away", "use_healing"]
   }
 }

tests/ai.cpp

@@ -171,6 +171,32 @@ TEST_CASE("ai autowalker ai test", "[ai]") {
   REQUIRE(ai::test(result, "no_more_enemies"));
 }
 
-TEST_CASE("Confirm EntityAI behaves as expected", "[ai]") {
-  // nothing yet
+TEST_CASE("Confirm EntityAI behaves as expected", "[ai-enemy]") {
+  ai::reset();
+  ai::init("assets/ai.json");
+  auto ai_start = ai::load_state("Enemy::initial_state");
+  auto ai_goal = ai::load_state("Enemy::final_state");
+
+  ai::EntityAI enemy("Enemy::actions", ai_start, ai_goal);
+
+  enemy.set_state("detect_enemy", true);
+  enemy.update();
+  REQUIRE(enemy.wants_to("find_enemy"));
+
+  enemy.set_state("enemy_found", true);
+  enemy.update();
+  REQUIRE(enemy.wants_to("kill_enemy"));
+
+  enemy.set_state("in_combat", true);
+  enemy.set_state("health_good", false);
+  enemy.update();
+  enemy.dump();
+  REQUIRE(enemy.wants_to("run_away"));
+
+  enemy.set_state("have_item", true);
+  enemy.set_state("have_healing", true);
+  enemy.set_state("in_combat", false);
+  enemy.update();
+  enemy.dump();
+  REQUIRE(enemy.wants_to("use_healing"));
 }