Can now specify a background to render the sprite on.

tools/animator.cpp

@@ -8,6 +8,16 @@
 #include "constants.hpp"
 #include "animate2.hpp"
 #include "tools/animator.hpp"
+#include <unistd.h>
+
+/*
+ * TODO:
+ *
+ * - Setting a background.
+ * - Options parsing for that.
+ * - Easing functions from strings in json.
+ * - Map of animation forms.
+ */
 
 using namespace std::chrono_literals;
 
@@ -15,9 +25,11 @@ bool YES_SYNC=true;
 
 namespace animator {
 
-  void FSM::init(const std::string &sprite_name) {
+  void FSM::init(const std::string &sprite_name, const std::string &anim_name, const std::string &background) {
     $timer.start();
     $sprite_name = sprite_name;
+    $anim_name = anim_name;
+    $background = background;
 
     // this loads the animation
     reload();
@@ -26,7 +38,7 @@ namespace animator {
     $window = sf::RenderWindow(sf::VideoMode(new_size), "Animation Crafting Tool");
     $window.setPosition({0,0});
 
-    $ui.init($sprite_name, new_size.x, new_size.y);
+    $ui.init($sprite_name, $background, new_size.x, new_size.y);
     $sprite = $ui.get_sprite();
 
     // need to keep these aroung
@@ -37,7 +49,6 @@ namespace animator {
       $window.setVerticalSyncEnabled(VSYNC);
       if(FRAME_LIMIT) $window.setFramerateLimit(FRAME_LIMIT);
     }
-
   }
 
   void FSM::event(Event ev, std::any data) {
@@ -111,7 +122,7 @@ namespace animator {
   }
 
   void FSM::reload() {
-    $anim = animate2::load("assets/animate2.json", $sprite_name);
+    $anim = animate2::load("assets/animate2.json", $anim_name);
     $anim.play();
     $last_mod_time = std::filesystem::last_write_time("assets/animate2.json");
   }
@@ -153,10 +164,16 @@ namespace animator {
     return !in_state(State::END);
   }
 
-  void UI::init(const std::string& sprite_name, int width, int height) {
+  void UI::init(const std::string& sprite_name, const std::string& background, int width, int height) {
     $ui.position(0,0, width, height);
     $ui.layout("[=viewer]");
 
+    if(background != "") {
+      $ui.set<guecs::Background>($ui.MAIN, {$ui.$parser, guecs::THEME.TRANSPARENT});
+      auto& bg = $ui.get<guecs::Background>($ui.MAIN);
+      bg.set_sprite(background, true);
+    }
+
     auto viewer = $ui.entity("viewer");
     $ui.set<guecs::Sprite>(viewer, { sprite_name, 0, false});
 
@@ -181,6 +198,11 @@ namespace animator {
   }
 }
 
+int error() {
+  fmt::println("USAGE: animator -h -b <background> -s <sprite> -a <animation>");
+  return 1;
+}
+
 int main(int argc, char* argv[]) {
   shaders::init();
   components::init();
@@ -189,14 +211,42 @@ int main(int argc, char* argv[]) {
   ai::init("ai");
   animation::init();
 
-  dbc::check(argc == 2, "USAGE: animator <sprite>");
-  std::string sprite_name{argv[1]};
+  std::string sprite_name;
+  std::string background;
+  std::string anim_name;
+  int opt = 0;
+
+  while((opt = getopt(argc, argv, "hb:s:a:")) != -1) {
+    switch(opt) {
+      case 'b':
+        background = optarg;
+        break;
+      case 's':
+        sprite_name = optarg;
+        break;
+      case 'a':
+        anim_name = optarg;
+        break;
+      case 'h': // fallthrough
+        error();
+        break;
+      default:
+        return error();
+        break;
+    }
+  }
+
+  if(sprite_name == "") {
+    return error();
+  } else if(anim_name == "") {
+    anim_name = sprite_name; // default to the same
+  }
 
   sound::mute(true);
   sound::play("ambient_1", true);
 
   animator::FSM main;
-  main.init(sprite_name);
+  main.init(sprite_name, anim_name, background);
 
   while(main.active()) {
     main.tick();