fix more style things

core.mod/src/entities/ItemStackEntity.cc

 }
 
 void ItemStackEntity::draw(const Swan::Context &ctx, Swan::Win &win) {
-	SDL_Rect rect = item_->image_.frameRect();
+	SDL_Rect rect = item_->image.frameRect();
 
-	SDL_Texture *tex = item_->image_.texture_.get();
+	SDL_Texture *tex = item_->image.texture_.get();
 	Swan::TexColorMod darken(tex, 220, 220, 220);
 
 	win.showTexture(body_.pos, tex, &rect,
 Swan::Entity::PackObject ItemStackEntity::serialize(const Swan::Context &ctx, msgpack::zone &zone) {
 	return {
 		{ "pos", msgpack::object(body_.pos, zone) },
-		{ "tile", msgpack::object(item_->name_, zone) },
+		{ "tile", msgpack::object(item_->name, zone) },
 	};
 }

core.mod/src/entities/PlayerEntity.cc

 	}
 
 	// Fall down faster than we went up
-	if (!physics_.on_ground && (!jumpPressed || physics_.vel.y > 0))
+	if (!physics_.onGround && (!jumpPressed || physics_.vel.y > 0))
 		physics_.force += Swan::Vec2(0, DOWN_FORCE);
 
 	if (state_ != oldState)

core.mod/src/main.cc

 		registerTile({
 			.name = "stone",
 			.image = "core/tile/stone",
-			.dropped_item = "core::stone",
+			.droppedItem = "core::stone",
 		});
 		registerTile({
 			.name = "dirt",
 			.image = "core/tile/dirt",
-			.dropped_item = "core::dirt",
+			.droppedItem = "core::dirt",
 		});
 		registerTile({
 			.name = "grass",
 			.image = "core/tile/grass",
-			.dropped_item = "core::dirt",
+			.droppedItem = "core::dirt",
 		});
 		registerTile({
 			.name = "tree-trunk",
 			.image = "core/tile/tree-trunk",
-			.dropped_item = "core::tree-trunk",
+			.droppedItem = "core::tree-trunk",
 		});
 		registerTile({
 			.name = "leaves",
 		registerTile({
 			.name = "torch",
 			.image = "core/tile/torch",
-			.is_solid = false,
-			.light_level = 80/255.0,
+			.isSolid = false,
+			.lightLevel = 80/255.0,
 		});
 
 		registerItem({
 	}
 
 	void onTileBreak(const Swan::Context &ctx, Swan::TilePos pos, Swan::Tile &tile) {
-		if (tile.droppedItem_) {
+		if (tile.droppedItem) {
 			ctx.plane.spawnEntity<ItemStackEntity>(
-				ctx, (Swan::Vec2)pos + Swan::Vec2{0.5, 0.5}, *tile.droppedItem_);
+				ctx, (Swan::Vec2)pos + Swan::Vec2{0.5, 0.5}, *tile.droppedItem);
 		}
 	}
 

libswan/src/Animation.cc

 		timer_ += interval_;
 
 		frame_ += 1;
-		if (frame_ >= resource_.num_frames_)
+		if (frame_ >= resource_.numFrames_)
 			frame_ = 0;
 	}
 }