Started working on this 'arena tester' tool that would let me load an enemy and test them, but then realized I could just make it so I can spawn enemies in the game. I'm keeping the arena around as it will be useful later as a scriptable testing tool, but for now just spawn and test.

tools/arena.cpp

@@ -0,0 +1,45 @@
+#include "arena_fsm.hpp"
+#include "textures.hpp"
+#include "sound.hpp"
+#include "ai.hpp"
+#include "animation.hpp"
+#include <iostream>
+
+int main(int argc, char* argv[]) {
+  try {
+    dbc::check(argc == 2, "USAGE: arena enemy_name");
+    std::string enemy_name{argv[1]};
+
+    textures::init();
+    sound::init();
+    ai::init("assets/ai.json");
+    animation::init();
+
+    sound::mute(false);
+    sound::play("ambient_1", true);
+
+    arena::FSM main(enemy_name);
+
+    main.event(arena::Event::STARTED);
+
+    while(main.active()) {
+      main.render();
+
+      // ZED: need to sort out how to deal with this in the FSM
+      if(main.in_state(arena::State::IDLE)) {
+        main.event(arena::Event::TICK);
+      }
+
+      main.keyboard_mouse();
+
+      main.handle_world_events();
+    }
+
+    return 0;
+  } catch(const std::system_error& e) {
+    std::cout << "WARNING: On OSX you'll get this error on shutdown.\n";
+    std::cout << "Caught system_error with code "
+                 "[" << e.code() << "] meaning "
+                 "[" << e.what() << "]\n";
+  }
+}