Move similar/main/cntrlcen.c -> similar/main/cntrlcen.cpp

SConstruct

@@ -753,7 +753,7 @@ class DXXProgram(DXXCommon):
 'arch/sdl/timer.cpp',
 'main/aipath.cpp',
 'main/automap.cpp',
-'main/cntrlcen.c',
+'main/cntrlcen.cpp',
 'main/config.c',
 'main/console.c',
 'main/controls.c',

common/main/cntrlcen.h

@@ -25,6 +25,10 @@ COPYRIGHT 1993-1999 PARALLAX SOFTWARE CORPORATION.  ALL RIGHTS RESERVED.
 #include "wall.h"
 #include "switch.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #define CONTROLCEN_WEAPON_NUM   6
 
 #define MAX_CONTROLCEN_LINKS    10
@@ -129,4 +133,8 @@ extern void control_center_triggers_read_n_swap(control_center_triggers *cct, in
 
 extern int control_center_triggers_write(control_center_triggers *cct, PHYSFS_file *fp);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* _CNTRLCEN_H */

common/main/gameseq.h

@@ -25,6 +25,10 @@ COPYRIGHT 1993-1999 PARALLAX SOFTWARE CORPORATION.  ALL RIGHTS RESERVED.
 #include "mission.h"
 #include "object.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #define SUPER_MISSILE       0
 #define SUPER_SEEKER        1
 #define SUPER_SMARTBOMB     2
@@ -120,4 +124,8 @@ void EnterSecretLevel(void);
 void copy_defaults_to_robot(struct object *objp);
 void init_player_stats_new_ship(ubyte pnum);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* _GAMESEQ_H */

common/main/laser.h

@@ -20,6 +20,10 @@ COPYRIGHT 1993-1999 PARALLAX SOFTWARE CORPORATION.  ALL RIGHTS RESERVED.
 #ifndef _LASER_H
 #define _LASER_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 enum weapon_type_t
 {
 #if defined(DXX_BUILD_DESCENT_II)
@@ -196,4 +200,8 @@ static inline int is_proximity_bomb_or_smart_mine_or_placed_mine(enum weapon_typ
 	return id == PROXIMITY_ID;
 }
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* _LASER_H */