Correctly mirror shape offsets when flipping

Author: angered-ghandi

crates/resource/src/shape_manager.rs

@@ -109,7 +109,16 @@ impl Shape {
 
         let mut dst_rect = Rect::of(0, 0, src_rect.w, src_rect.h);
         dst_rect.translate(position.x, position.y);
-        dst_rect.translate(-center.x, -center.y);
+
+        // Need to mirror the center offset if flipping
+        let (mut offset_x, mut offset_y) = (center.x, center.y);
+        if flip_horizontal {
+            offset_x = src_rect.w - offset_x;
+        }
+        if flip_vertical {
+            offset_y = src_rect.h - offset_y;
+        }
+        dst_rect.translate(-offset_x, -offset_y);
 
         renderer.render_texture(&self.texture,
                                 Some(src_rect.into()),

src/ecs/system/action/move_to_position.rs

@@ -58,7 +58,7 @@ impl System for MoveToPositionActionSystem {
                 match unit.db(&self.empires).motion_params {
                     Some(ref params) => {
                         if params.walking_graphics[0].is_some() &&
-                                unit.graphic_id != params.walking_graphics[0] {
+                           unit.graphic_id != params.walking_graphics[0] {
                             unit.set_graphic(params.walking_graphics[0])
                         }
                         let speed: Fixed = params.speed.into();