Add star mob.

src/mobs/hero.rs

@@ -0,0 +1,61 @@
+use ai_behavior::Action;
+use find_folder;
+use gfx_device_gl::Resources;
+use piston_window::*;
+use sprite::*;
+use uuid::Uuid;
+use std::rc::Rc;
+use mobs::wrap;
+
+pub struct Hero {
+    pub sprite_id: Uuid,
+    pub dir: (f64, f64),
+    pub x: f64,
+    pub y: f64,
+    w: f64,
+    h: f64,
+}
+
+impl Hero {
+    pub fn new(w: &mut PistonWindow, scene: &mut Scene<Texture<Resources>>) -> Hero {
+        let assets = find_folder::Search::ParentsThenKids(3, 3)
+            .for_folder("assets")
+            .unwrap();
+        let tex = Rc::new(Texture::from_path(&mut w.factory,
+                                             assets.join("soot.png"),
+                                             Flip::None,
+                                             &TextureSettings::new())
+                                  .unwrap());
+        let mut sprite = Sprite::from_texture(tex);
+        sprite.set_position(320.0, 240.0);
+        let bounds = sprite.bounding_box();
+        let sprite_id = scene.add_child(sprite);
+        Hero {
+            x: 320.0,
+            y: 240.0,
+            w: bounds[2],
+            h: bounds[3],
+            dir: (0.0, 0.0),
+            sprite_id: sprite_id,
+        }
+    }
+
+    pub fn mov(&mut self, w: &PistonWindow, scene: &mut Scene<Texture<Resources>>, dt: f64) {
+        if let Some(sprite) = scene.child(self.sprite_id) {
+            let (sprite_x, sprite_y) = sprite.get_position();
+            self.x = sprite_x;
+            self.y = sprite_y;
+        }
+        let (wrapped, new_x, new_y) = wrap((w.size().width.into(), w.size().height.into()), (self.w, self.h), (self.x, self.y));
+        if wrapped {
+            self.x = new_x;
+            self.y = new_y;
+            if let Some(ref mut sprite) = scene.child_mut(self.sprite_id) {
+                sprite.set_position(self.x, self.y);
+            }
+        }
+        let mov_x = self.dir.0 * 2.0;
+        let mov_y = self.dir.1 * 2.0;
+        scene.run(self.sprite_id, &Action(Ease(EaseFunction::CubicOut, Box::new(MoveBy(dt * 0.75, mov_x, mov_y)))));
+    }
+}