Simplify filenames in game/action

E.g., `#include "action/docommand.h"` reads better than `#include "action/commandaction.h"`.

CMakeLists.txt

@@ -418,7 +418,7 @@ target_precompile_headers(libscript PRIVATE src/engine/pch.h)
 
 set(GAME_HEADERS
     src/engine/game/action/action.h
-    src/engine/game/action/commandaction.h
+    src/engine/game/action/docommand.h
     src/engine/game/action/follow.h
     src/engine/game/action/locationaction.h
     src/engine/game/action/movetolocation.h
@@ -429,7 +429,7 @@ set(GAME_HEADERS
     src/engine/game/action/startconversation.h
     src/engine/game/action/usefeat.h
     src/engine/game/action/useskill.h
-    src/engine/game/action/waitaction.h
+    src/engine/game/action/wait.h
     src/engine/game/animationutil.h
     src/engine/game/camera/animatedcamera.h
     src/engine/game/camera/camera.h

src/engine/game/action/docommand.h

@@ -17,10 +17,10 @@
 
 #pragma once
 
-#include "action.h"
-
 #include "../../script/types.h"
 
+#include "action.h"
+
 namespace reone {
 
 namespace game {

src/engine/game/action/startconversation.h

@@ -17,8 +17,6 @@
 
 #pragma once
 
-#include <string>
-
 #include "objectaction.h"
 
 namespace reone {

src/engine/game/actionexecutor.cpp

@@ -24,7 +24,7 @@
 
 #include "action/usefeat.h"
 #include "action/useskill.h"
-#include "action/waitaction.h"
+#include "action/wait.h"
 #include "enginetype/location.h"
 #include "game.h"
 #include "object/area.h"

src/engine/game/actionexecutor.h

@@ -21,7 +21,7 @@
 
 #include "glm/vec3.hpp"
 
-#include "action/commandaction.h"
+#include "action/docommand.h"
 #include "action/follow.h"
 #include "action/locationaction.h"
 #include "action/movetolocation.h"

src/engine/game/script/routines_actions.cpp

@@ -23,13 +23,13 @@
 
 #include "../../common/log.h"
 
-#include "../action/commandaction.h"
+#include "../action/docommand.h"
 #include "../action/locationaction.h"
 #include "../action/movetolocation.h"
 #include "../action/movetoobject.h"
 #include "../action/playanimation.h"
 #include "../action/startconversation.h"
-#include "../action/waitaction.h"
+#include "../action/wait.h"
 #include "../enginetype/location.h"
 #include "../game.h"