Replaced include guards with #pragma onceHEADmaster

Thanks to https://github.com/cgmb/guardonce and a follow-up replace to
remove duplicated newlines at end of file:

    find src -type f -name '*.h' -exec \
      sed --in-place -e :a -e '/^\n*$/{$d;N;};/\n$/ba' {} \;

Source: https://unix.stackexchange.com/questions/81685/how-to-remove-multiple-newlines-at-eof

Fixes compile on macOS, which appears to have been due to the EVENT_H
include guard.

27 files changed, 28 insertions, 105 deletions

diff --git a/src/resources/action.h b/src/resources/action.h
index 37f29810..c3e47dbb 100644
--- a/src/resources/action.h
+++ b/src/resources/action.h
@@ -19,8 +19,7 @@
  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef ACTION_H
-#define ACTION_H
+#pragma once
 
 #include <map>
 
@@ -43,5 +42,3 @@ class Action
     protected:
         std::map<int, Animation *> mAnimations;
 };
-
-#endif
diff --git a/src/resources/ambientlayer.h b/src/resources/ambientlayer.h
index e62af33f..8e0137b1 100644
--- a/src/resources/ambientlayer.h
+++ b/src/resources/ambientlayer.h
@@ -18,8 +18,7 @@
  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef RESOURCES_AMBIENTOVERLAY_H
-#define RESOURCES_AMBIENTOVERLAY_H
+#pragma once
 
 #include "resource.h"
 
@@ -52,5 +51,3 @@ class AmbientLayer
         float mPosX = 0;          /**< Current layer X position. */
         float mPosY = 0;          /**< Current layer Y position. */
 };
-
-#endif
diff --git a/src/resources/animation.h b/src/resources/animation.h
index 812e0547..01b8b388 100644
--- a/src/resources/animation.h
+++ b/src/resources/animation.h
@@ -19,8 +19,7 @@
  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef ANIMATION_H
-#define ANIMATION_H
+#pragma once
 
 #include <vector>
 
@@ -81,5 +80,3 @@ class Animation final
         std::vector<Frame> mFrames;
         int mDuration = 0;
 };
-
-#endif
diff --git a/src/resources/attributes.h b/src/resources/attributes.h
index 9071d6b8..e70a5435 100644
--- a/src/resources/attributes.h
+++ b/src/resources/attributes.h
@@ -18,8 +18,7 @@
  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef RESOURCES_ATTRIBUTES_H
-#define RESOURCES_ATTRIBUTES_H
+#pragma once
 
 #include <string>
 #include <vector>
@@ -73,5 +72,3 @@ namespace Attributes
     unsigned int getAttributeMaximum();
 
 } // namespace Attributes
-
-#endif // RESOURCES_ATTRIBUTES_H
diff --git a/src/resources/beinginfo.h b/src/resources/beinginfo.h
index 2eac4237..fbeec491 100644
--- a/src/resources/beinginfo.h
+++ b/src/resources/beinginfo.h
@@ -19,8 +19,7 @@
  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef BEINGINFO_H
-#define BEINGINFO_H
+#pragma once
 
 #include "actorsprite.h"
 #include "map.h"
@@ -85,5 +84,3 @@ private:
     std::map<SoundEvent, std::vector<std::string>> mSounds;
     std::map<int, Attack> mAttacks;
 };
-
-#endif // BEINGINFO_H
diff --git a/src/resources/chardb.h b/src/resources/chardb.h
index 10530b26..de49dad6 100644
--- a/src/resources/chardb.h
+++ b/src/resources/chardb.h
@@ -19,8 +19,7 @@
  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef RESOURCES_CHARDB_H
-#define RESOURCES_CHARDB_H
+#pragma once
 
 #include <vector>
 
@@ -44,5 +43,3 @@ namespace CharDB
 
     const std::vector<int> &getDefaultItems();
 }
-
-#endif // RESOURCES_CHARDB_H
diff --git a/src/resources/dye.h b/src/resources/dye.h
index ce5565f8..61ad4df2 100644
--- a/src/resources/dye.h
+++ b/src/resources/dye.h
@@ -19,8 +19,7 @@
  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef DYE_H
-#define DYE_H
+#pragma once
 
 #include <string>
 #include <vector>
@@ -97,5 +96,3 @@ class Dye
          */
         DyePalette *mDyePalettes[7];
 };
-
-#endif
diff --git a/src/resources/emotedb.h b/src/resources/emotedb.h
index 7c6f4644..0abb62e4 100644
--- a/src/resources/emotedb.h
+++ b/src/resources/emotedb.h
@@ -19,8 +19,7 @@
  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef EMOTE_DB_H
-#define EMOTE_DB_H
+#pragma once
 
 #include <memory>
 #include <string>
@@ -59,5 +58,3 @@ namespace EmoteDB
 
     int getEmoteCount();
 }
-
-#endif // EMOTE_DB_H
diff --git a/src/resources/hairdb.h b/src/resources/hairdb.h
index 374f2e03..a228c72e 100644
--- a/src/resources/hairdb.h
+++ b/src/resources/hairdb.h
@@ -19,8 +19,7 @@
  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef HAIR_MANAGER_H
-#define HAIR_MANAGER_H
+#pragma once
 
 #include <map>
 #include <set>
@@ -93,5 +92,3 @@ private:
 };
 
 extern HairDB hairDB;
-
-#endif
diff --git a/src/resources/image.h b/src/resources/image.h
index e2e240c3..37dd5e1d 100644
--- a/src/resources/image.h
+++ b/src/resources/image.h
@@ -19,8 +19,7 @@
  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef IMAGE_H
-#define IMAGE_H
+#pragma once
 
 #include "resources/resource.h"
 
@@ -216,5 +215,3 @@ class SubImage : public Image
     private:
         ResourceRef<Image> mParent;
 };
-
-#endif
diff --git a/src/resources/imageset.h b/src/resources/imageset.h
index a6501cc9..97dbec90 100644
--- a/src/resources/imageset.h
+++ b/src/resources/imageset.h
@@ -19,8 +19,7 @@
  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef IMAGESET_H
-#define IMAGESET_H
+#pragma once
 
 #include "resources/resource.h"
 
@@ -78,5 +77,3 @@ class ImageSet : public Resource
         int mOffsetX = 0;
         int mOffsetY = 0;
 };
-
-#endif
diff --git a/src/resources/imagewriter.h b/src/resources/imagewriter.h
index 23e85bd8..41ca267a 100644
--- a/src/resources/imagewriter.h
+++ b/src/resources/imagewriter.h
@@ -19,6 +19,8 @@
  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#pragma once
+
 #include <iosfwd>
 
 struct SDL_Surface;
diff --git a/src/resources/itemdb.h b/src/resources/itemdb.h
index ef0985a3..8359452c 100644
--- a/src/resources/itemdb.h
+++ b/src/resources/itemdb.h
@@ -19,8 +19,7 @@
  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef ITEM_MANAGER_H
-#define ITEM_MANAGER_H
+#pragma once
 
 #include <list>
 #include <map>
@@ -204,5 +203,3 @@ class ManaServItemDB : public ItemDB
 } // namespace ManaServ
 
 extern ItemDB *itemDb;
-
-#endif
diff --git a/src/resources/iteminfo.h b/src/resources/iteminfo.h
index 78c808da..42c65c80 100644
--- a/src/resources/iteminfo.h
+++ b/src/resources/iteminfo.h
@@ -19,8 +19,7 @@
  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef ITEMINFO_H
-#define ITEMINFO_H
+#pragma once
 
 #include "being.h"
 
@@ -162,5 +161,3 @@ enum EquipmentSlot
 };
 
 } // namespace TmwAthena
-
-#endif // ITEMINFO_H
diff --git a/src/resources/mapreader.h b/src/resources/mapreader.h
index 105c5d1d..e646fb04 100644
--- a/src/resources/mapreader.h
+++ b/src/resources/mapreader.h
@@ -19,8 +19,7 @@
  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef MAPREADER_H
-#define MAPREADER_H
+#pragma once
 
 #include "utils/xml.h"
 
@@ -45,5 +44,3 @@ public:
      */
     static Map *readMap(XML::Node node, const std::string &path);
 };
-
-#endif // MAPREADER_H
diff --git a/src/resources/monsterdb.h b/src/resources/monsterdb.h
index ff709486..ec71952f 100644
--- a/src/resources/monsterdb.h
+++ b/src/resources/monsterdb.h
@@ -19,8 +19,7 @@
  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef MONSTER_DB_H
-#define MONSTER_DB_H
+#pragma once
 
 #include "utils/xml.h"
 
@@ -43,5 +42,3 @@ namespace MonsterDB
 
     BeingInfo *get(int id);
 }
-
-#endif
diff --git a/src/resources/music.h b/src/resources/music.h
index 0c445b2b..81dc0d19 100644
--- a/src/resources/music.h
+++ b/src/resources/music.h
@@ -19,8 +19,7 @@
  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef MUSIC_H
-#define MUSIC_H
+#pragma once
 
 #include "resources/resource.h"
 
@@ -61,5 +60,3 @@ class Music : public Resource
 
         Mix_Music *mMusic;
 };
-
-#endif
diff --git a/src/resources/npcdb.h b/src/resources/npcdb.h
index 306167de..779f4919 100644
--- a/src/resources/npcdb.h
+++ b/src/resources/npcdb.h
@@ -19,8 +19,7 @@
  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef NPC_DB_H
-#define NPC_DB_H
+#pragma once
 
 #include <string>
 #include "utils/xml.h"
@@ -42,5 +41,3 @@ namespace NPCDB
 
     BeingInfo *get(int id);
 }
-
-#endif
diff --git a/src/resources/resource.h b/src/resources/resource.h
index e1f37d73..c6b41295 100644
--- a/src/resources/resource.h
+++ b/src/resources/resource.h
@@ -19,8 +19,7 @@
  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef RESOURCE_H
-#define RESOURCE_H
+#pragma once
 
 #include <ctime>
 #include <string>
@@ -157,5 +156,3 @@ public:
 private:
     RESOURCE *mResource;
 };
-
-#endif
diff --git a/src/resources/resourcemanager.h b/src/resources/resourcemanager.h
index d1c32d8c..3ce4229b 100644
--- a/src/resources/resourcemanager.h
+++ b/src/resources/resourcemanager.h
@@ -19,8 +19,7 @@
  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef RESOURCE_MANAGER_H
-#define RESOURCE_MANAGER_H
+#pragma once
 
 #include "resources/resource.h"
 
@@ -240,5 +239,3 @@ class ResourceManager
         std::map<std::string, Resource *> mOrphanedResources;
         time_t mOldestOrphan;
 };
-
-#endif
diff --git a/src/resources/settingsmanager.h b/src/resources/settingsmanager.h
index 25feb86b..5b70f865 100644
--- a/src/resources/settingsmanager.h
+++ b/src/resources/settingsmanager.h
@@ -18,8 +18,7 @@
  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef SETTINGSMANAGER_HPP
-#define SETTINGSMANAGER_HPP
+#pragma once
 
 #include <string>
 #include <list>
@@ -30,6 +29,3 @@ namespace SettingsManager
     void load();
     void unload();
 }
-
-
-#endif // SETTINGSMANAGER_HPP
diff --git a/src/resources/soundeffect.h b/src/resources/soundeffect.h
index eada80b5..127b1ce6 100644
--- a/src/resources/soundeffect.h
+++ b/src/resources/soundeffect.h
@@ -19,8 +19,7 @@
  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef SOUND_EFFECT_H
-#define SOUND_EFFECT_H
+#pragma once
 
 #include "resources/resource.h"
 
@@ -61,5 +60,3 @@ class SoundEffect : public Resource
 
         Mix_Chunk *mChunk;
 };
-
-#endif // SOUND_EFFECT_H
diff --git a/src/resources/specialdb.h b/src/resources/specialdb.h
index 20ba0075..c8158a27 100644
--- a/src/resources/specialdb.h
+++ b/src/resources/specialdb.h
@@ -18,8 +18,7 @@
  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef SPECIAL_DB_H
-#define SPECIAL_DB_H
+#pragma once
 
 #include <string>
 #include "utils/xml.h"
@@ -63,5 +62,3 @@ namespace SpecialDB
 
     SpecialInfo::TargetMode targetModeFromString(const std::string& str);
 }
-
-#endif
diff --git a/src/resources/spritedef.h b/src/resources/spritedef.h
index fa44deea..0f6e9966 100644
--- a/src/resources/spritedef.h
+++ b/src/resources/spritedef.h
@@ -19,8 +19,7 @@
  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef SPRITEDEF_H
-#define SPRITEDEF_H
+#pragma once
 
 #include "resources/resource.h"
 
@@ -150,5 +149,3 @@ class SpriteDef : public Resource
         std::map<std::string, ImageSet *> mImageSets;
         std::map<std::string, Action *> mActions;
 };
-
-#endif // SPRITEDEF_H
diff --git a/src/resources/theme.h b/src/resources/theme.h
index 7edae416..13491e26 100644
--- a/src/resources/theme.h
+++ b/src/resources/theme.h
@@ -21,8 +21,7 @@
  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef SKIN_H
-#define SKIN_H
+#pragma once
 
 #include "graphics.h"
 #include "eventlistener.h"
@@ -228,5 +227,3 @@ class Theme : public Palette, public EventListener
 
         std::vector<DyePalette *> mProgressColors;
 };
-
-#endif
diff --git a/src/resources/userpalette.h b/src/resources/userpalette.h
index 946a4725..347491f1 100644
--- a/src/resources/userpalette.h
+++ b/src/resources/userpalette.h
@@ -20,8 +20,7 @@
  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef USER_PALETTE_H
-#define USER_PALETTE_H
+#pragma once
 
 #include "gui/palette.h"
 
@@ -185,5 +184,3 @@ class UserPalette : public Palette, public gcn::ListModel
 };
 
 extern UserPalette *userPalette;
-
-#endif // USER_PALETTE_H
diff --git a/src/resources/wallpaper.h b/src/resources/wallpaper.h
index 532dfd38..7e72e2f0 100644
--- a/src/resources/wallpaper.h
+++ b/src/resources/wallpaper.h
@@ -19,8 +19,7 @@
  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef WALLPAPER_H
-#define WALLPAPER_H
+#pragma once
 
 #include <string>
 
@@ -46,5 +45,3 @@ class Wallpaper
          */
         static std::string getWallpaper(int width, int height);
 };
-
-#endif // WALLPAPER_H