Rituals are more or less sorted out in theory, and they helped find a cycle in the GOAP algorithm that I'm detecting/preventing.

Makefile

@@ -14,7 +14,7 @@ release_build:
 	meson compile -j 10 -C builddir
 
 debug_build:
-	meson setup --wipe builddir --buildtype debug
+	meson setup --wipe builddir -Db_ndebug=true --buildtype debugoptimized
 	meson compile -j 10 -C builddir
 
 tracy_build:

goap.cpp

@@ -1,8 +1,10 @@
 #include "dbc.hpp"
 #include "goap.hpp"
 #include "ai_debug.hpp"
+#include "stats.hpp"
 
 namespace ai {
+
   using namespace nlohmann;
   using namespace dbc;
 
@@ -36,7 +38,6 @@ namespace ai {
     $negative_preconds[name] = false;
   }
 
-
   bool Action::can_effect(State& state) {
     return ((state & $positive_preconds) == $positive_preconds) &&
       ((state & $negative_preconds) == ALL_ZERO);
@@ -53,14 +54,24 @@ namespace ai {
 
   Script reconstruct_path(std::unordered_map<Action, Action>& came_from, Action& current) {
     Script total_path{current};
+    bool final_found = false;
 
-    while(came_from.contains(current)) {
+    for(size_t i = 0; i <= came_from.size() && came_from.contains(current); i++) {
       current = came_from.at(current);
       if(current != FINAL_ACTION) {
         total_path.push_front(current);
+      } else {
+        final_found = true;
       }
     }
 
+    // this here temporarily while I figure out cycle detects/prevention
+    if(!final_found && total_path[0] != FINAL_ACTION) {
+      auto error = fmt::format("!!!!! You may have a cycle in your json. No FINAL found. Here's the path: ");
+      for(auto& action : total_path) error += fmt::format("{} ", action.name);
+      dbc::sentinel(error);
+    }
+
     return total_path;
   }
 
@@ -96,7 +107,7 @@ namespace ai {
     ActionState current{FINAL_ACTION, start};
 
     g_score[start] = 0;
-    open_set[current] = g_score[start] + h(start, goal, current.action);
+    open_set.insert_or_assign(current, g_score[start] + h(start, goal, current.action));
 
     while(!open_set.empty()) {
       current = find_lowest(open_set);
@@ -127,7 +138,10 @@ namespace ai {
           g_score[neighbor] = tentative_g_score;
           // open_set gets the fScore
           ActionState neighbor_as{neighbor_action, neighbor};
-          open_set[neighbor_as] = tentative_g_score + h(neighbor, goal, neighbor_as.action);
+
+          int score = tentative_g_score + h(neighbor, goal, neighbor_as.action);
+          // could maintain lowest here and avoid searching all things
+          open_set.insert_or_assign(neighbor_as, score);
         }
       }
     }

meson.build

@@ -111,6 +111,7 @@ sources = [
   'rand.cpp',
   'raycaster.cpp',
   'render.cpp',
+  'rituals.cpp',
   'save.cpp',
   'shiterator.hpp',
   'sound.cpp',
@@ -126,7 +127,7 @@ sources = [
 executable('runtests', sources + [
   'tests/ansi_parser.cpp',
   'tests/base.cpp',
-  'tests/combat.cpp',
+  'tests/rituals.cpp',
   'tests/components.cpp',
   'tests/config.cpp',
   'tests/dbc.cpp',

rituals.cpp

@@ -0,0 +1,23 @@
+#include "rituals.hpp"
+#include "ai_debug.hpp"
+
+void RitualAI::reset() {
+  start = original;
+}
+
+bool RitualAI::will_do(std::string name) {
+  ai::check_valid_action(name, "RitualAI::is_able_to");
+  return plan.script[0].name == name;
+}
+
+void RitualAI::set_state(std::string name, bool setting) {
+  ai::set(start, name, setting);
+}
+
+void RitualAI::update() {
+  plan = ai::plan(script, start, goal);
+}
+
+void RitualAI::dump() {
+  ai::dump_script(script, start, plan.script);
+}

rituals.hpp

@@ -0,0 +1,23 @@
+#pragma once
+#include "ai.hpp"
+
+struct RitualAI {
+  std::string script;
+  ai::State start;
+  ai::State original;
+  ai::State goal;
+  ai::ActionPlan plan;
+
+  RitualAI(std::string script, ai::State start, ai::State goal) :
+    script(script), start(start), original(start), goal(goal)
+  {
+  }
+
+  RitualAI() {};
+
+  void reset();
+  bool will_do(std::string name);
+  void set_state(std::string name, bool setting);
+  void update();
+  void dump();
+};

stats.cpp

@@ -1,10 +1,10 @@
 #include "stats.hpp"
 #include <fmt/core.h>
 
-void Stats::dump()
+void Stats::dump(std::string msg)
 {
-  fmt::println("sum: {}, sumsq: {}, n: {}, "
+  fmt::println("{}: sum: {}, sumsq: {}, n: {}, "
             "min: {}, max: {}, mean: {}, stddev: {}",
-            sum, sumsq, n, min, max, mean(),
+            msg, sum, sumsq, n, min, max, mean(),
             stddev());
 }

stats.hpp

@@ -53,5 +53,5 @@ struct Stats {
     sample(1/elapsed.count());
   }
 
-  void dump();
+  void dump(std::string msg="");
 };

tests/ai.cpp

@@ -3,6 +3,7 @@
 #include "ai.hpp"
 #include <iostream>
 #include "ai_debug.hpp"
+#include "rituals.hpp"
 
 using namespace dbc;
 using namespace nlohmann;
@@ -207,5 +208,25 @@ TEST_CASE("Confirm EntityAI behaves as expected", "[ai]") {
   enemy.set_state("health_good", false);
   enemy.update();
   REQUIRE(enemy.wants_to("run_away"));
+}
+
+TEST_CASE("confirm that cycles are avoided/detected", "[ai]") {
+  ai::reset();
+  ai::init("tests/cyclic_rituals.json");
+
+  auto start = ai::load_state("initial");
+  auto goal = ai::load_state("final");
+
+  RitualAI ritual("actions", start, goal);
+  ritual.reset();
+  ritual.set_state("has_magick", true);
+  ritual.set_state("cursed_item", true);
+  ritual.set_state("shiny_bauble", true);
+
+  bool it_throws = false;
+  try { ritual.update(); } catch(...) { it_throws = true; }
+  REQUIRE(it_throws);
 
+  fmt::println("\n\n------------ CYCLES AVOIDED");
+  ritual.dump();
 }

tests/rituals.cpp

@@ -1,43 +1,7 @@
 #include <catch2/catch_test_macros.hpp>
 #include <iostream>
-#include "ai.hpp"
+#include "rituals.hpp"
-#include "ai_debug.hpp"
 
-struct RitualAI {
-  std::string script;
-  ai::State start;
-  ai::State original;
-  ai::State goal;
-  ai::ActionPlan plan;
-
-  RitualAI(std::string script, ai::State start, ai::State goal) :
-    script(script), start(start), original(start), goal(goal)
-  {
-  }
-
-  RitualAI() {};
-
-  void reset() {
-    start = original;
-  }
-
-  bool will_do(std::string name) {
-    ai::check_valid_action(name, "RitualAI::is_able_to");
-    return plan.script[0].name == name;
-  }
-
-  void set_state(std::string name, bool setting) {
-    ai::set(start, name, setting);
-  }
-
-  void update() {
-    plan = ai::plan(script, start, goal);
-  }
-
-  void dump() {
-    dump_script(script, start, plan.script);
-  }
-};
 
 TEST_CASE("prototype combat system ideas", "[combat]") {
   ai::reset();