(svn r22145) -Codechange: Do explicit test for non-bool values.

14 files changed, 31 insertions, 31 deletions

diff --git a/src/ai/api/ai_rail.cpp b/src/ai/api/ai_rail.cpp
index 0d734f01c..c6aefe714 100644
--- a/src/ai/api/ai_rail.cpp
+++ b/src/ai/api/ai_rail.cpp
@@ -291,7 +291,7 @@ static uint32 SimulateDrag(TileIndex from, TileIndex tile, TileIndex *to)
 		} else {
 			p2 |= (TRACK_LEFT << 4);
 		}
-		if (diag_offset) {
+		if (diag_offset != 0) {
 			*to -= Clamp((int)::TileX(*to) - (int)::TileX(tile), -1, 1);
 		} else {
 			*to -= ::MapSizeX() * Clamp((int)::TileY(*to) - (int)::TileY(tile), -1, 1);
@@ -302,7 +302,7 @@ static uint32 SimulateDrag(TileIndex from, TileIndex tile, TileIndex *to)
 		} else {
 			p2 |= (TRACK_LOWER << 4);
 		}
-		if (diag_offset) {
+		if (diag_offset != 0) {
 			*to -= Clamp((int)::TileX(*to) - (int)::TileX(tile), -1, 1);
 		} else {
 			*to -= ::MapSizeX() * Clamp((int)::TileY(*to) - (int)::TileY(tile), -1, 1);
@@ -313,7 +313,7 @@ static uint32 SimulateDrag(TileIndex from, TileIndex tile, TileIndex *to)
 		} else {
 			p2 |= (TRACK_RIGHT << 4);
 		}
-		if (!diag_offset) {
+		if (diag_offset == 0) {
 			*to -= Clamp((int)::TileX(*to) - (int)::TileX(tile), -1, 1);
 		} else {
 			*to -= ::MapSizeX() * Clamp((int)::TileY(*to) - (int)::TileY(tile), -1, 1);
@@ -324,7 +324,7 @@ static uint32 SimulateDrag(TileIndex from, TileIndex tile, TileIndex *to)
 		} else {
 			p2 |= (TRACK_LOWER << 4);
 		}
-		if (!diag_offset) {
+		if (diag_offset == 0) {
 			*to -= Clamp((int)::TileX(*to) - (int)::TileX(tile), -1, 1);
 		} else {
 			*to -= ::MapSizeX() * Clamp((int)::TileY(*to) - (int)::TileY(tile), -1, 1);
diff --git a/src/autoreplace.cpp b/src/autoreplace.cpp
index 464aa354a..4a7dfcd01 100644
--- a/src/autoreplace.cpp
+++ b/src/autoreplace.cpp
@@ -26,7 +26,7 @@ static EngineRenew *GetEngineReplacement(EngineRenewList erl, EngineID engine, G
 {
 	EngineRenew *er = (EngineRenew *)erl;
 
-	while (er) {
+	while (er != NULL) {
 		if (er->from == engine && er->group_id == group) return er;
 		er = er->next;
 	}
@@ -114,7 +114,7 @@ CommandCost RemoveEngineReplacement(EngineRenewList *erl, EngineID engine, Group
 	EngineRenew *er = (EngineRenew *)(*erl);
 	EngineRenew *prev = NULL;
 
-	while (er) {
+	while (er != NULL) {
 		if (er->from == engine && er->group_id == group) {
 			if (flags & DC_EXEC) {
 				if (prev == NULL) { // First element
diff --git a/src/gfx.cpp b/src/gfx.cpp
index 7fad4f15b..6253238a3 100644
--- a/src/gfx.cpp
+++ b/src/gfx.cpp
@@ -1699,7 +1699,7 @@ void SetDirtyBlocks(int left, int top, int right, int bottom)
 	do {
 		int i = width;
 
-		do b[--i] = 0xFF; while (i);
+		do b[--i] = 0xFF; while (i != 0);
 
 		b += _dirty_bytes_per_line;
 	} while (--height != 0);
diff --git a/src/ini.cpp b/src/ini.cpp
index dc658296e..35d8910c8 100644
--- a/src/ini.cpp
+++ b/src/ini.cpp
@@ -268,11 +268,11 @@ void IniFile::LoadFromDisk(const char *filename)
 			}
 			s++; // skip [
 			group = new IniGroup(this, s, e - s);
-			if (comment_size) {
+			if (comment_size != 0) {
 				group->comment = strndup(comment, comment_size);
 				comment_size = 0;
 			}
-		} else if (group) {
+		} else if (group != NULL) {
 			char *t;
 			/* find end of keyname */
 			if (*s == '\"') {
@@ -285,7 +285,7 @@ void IniFile::LoadFromDisk(const char *filename)
 
 			/* it's an item in an existing group */
 			IniItem *item = new IniItem(group, s, t - s);
-			if (comment_size) {
+			if (comment_size != 0) {
 				item->comment = strndup(comment, comment_size);
 				comment_size = 0;
 			}
diff --git a/src/misc/countedptr.hpp b/src/misc/countedptr.hpp
index 78115c091..fbf2a40df 100644
--- a/src/misc/countedptr.hpp
+++ b/src/misc/countedptr.hpp
@@ -96,10 +96,10 @@ FORCEINLINE void CCountedPtr<Tcls_>::Assign(Tcls *pT)
 {
 	/* if they are the same, we do nothing */
 	if (pT != m_pT) {
-		if (pT) pT->AddRef();        // AddRef new pointer if any
-		Tcls *pTold = m_pT;          // save original ptr
-		m_pT = pT;                   // update m_pT to new value
-		if (pTold) pTold->Release(); // release old ptr if any
+		if (pT != NULL) pT->AddRef();        // AddRef new pointer if any
+		Tcls *pTold = m_pT;                  // save original ptr
+		m_pT = pT;                           // update m_pT to new value
+		if (pTold != NULL) pTold->Release(); // release old ptr if any
 	}
 }
 
diff --git a/src/openttd.cpp b/src/openttd.cpp
index 415f822cc..997899513 100644
--- a/src/openttd.cpp
+++ b/src/openttd.cpp
@@ -547,11 +547,11 @@ int ttd_main(int argc, char *argv[])
 
 #if defined(ENABLE_NETWORK)
 	if (dedicated) DEBUG(net, 0, "Starting dedicated version %s", _openttd_revision);
-	if (dedicated_host) {
+	if (dedicated_host != NULL) {
 		_network_bind_list.Clear();
 		*_network_bind_list.Append() = strdup(dedicated_host);
 	}
-	if (dedicated_port) _settings_client.network.server_port = dedicated_port;
+	if (dedicated_port != 0) _settings_client.network.server_port = dedicated_port;
 	if (_dedicated_forks && !dedicated) _dedicated_forks = false;
 #endif /* ENABLE_NETWORK */
 
diff --git a/src/os/windows/crashlog_win.cpp b/src/os/windows/crashlog_win.cpp
index a975603dd..2fd930d19 100644
--- a/src/os/windows/crashlog_win.cpp
+++ b/src/os/windows/crashlog_win.cpp
@@ -526,7 +526,7 @@ static LONG WINAPI ExceptionHandler(EXCEPTION_POINTERS *ep)
 	/* Close any possible log files */
 	CloseConsoleLogIfActive();
 
-	if (_safe_esp) {
+	if (_safe_esp != NULL) {
 #ifdef _M_AMD64
 		ep->ContextRecord->Rip = (DWORD64)ShowCrashlogWindow;
 		ep->ContextRecord->Rsp = (DWORD64)_safe_esp;
@@ -605,7 +605,7 @@ static void SetWndSize(HWND wnd, int mode)
 	if (mode >= 0) {
 		GetWindowRect(GetDlgItem(wnd, 11), &r2);
 		int offs = r2.bottom - r2.top + 10;
-		if (!mode) offs = -offs;
+		if (mode == 0) offs = -offs;
 		SetWindowPos(wnd, HWND_TOPMOST, 0, 0,
 			r.right - r.left, r.bottom - r.top + offs, SWP_NOMOVE | SWP_NOZORDER);
 	} else {
diff --git a/src/pathfinder/follow_track.hpp b/src/pathfinder/follow_track.hpp
index 8656a4f05..c32b7b704 100644
--- a/src/pathfinder/follow_track.hpp
+++ b/src/pathfinder/follow_track.hpp
@@ -456,7 +456,7 @@ public:
 		}
 
 		/* if min speed was requested, return it */
-		if (pmin_speed) *pmin_speed = min_speed;
+		if (pmin_speed != NULL) *pmin_speed = min_speed;
 		return max_speed;
 	}
 };
diff --git a/src/pathfinder/npf/npf.cpp b/src/pathfinder/npf/npf.cpp
index f8ab9c2f0..9eca606f0 100644
--- a/src/pathfinder/npf/npf.cpp
+++ b/src/pathfinder/npf/npf.cpp
@@ -981,7 +981,7 @@ static NPFFoundTargetData NPFRouteInternal(AyStarNode *start1, bool ignore_start
 	start1->user_data[NPF_NODE_FLAGS] = 0;
 	NPFSetFlag(start1, NPF_FLAG_IGNORE_START_TILE, ignore_start_tile1);
 	_npf_aystar.AddStartNode(start1, 0);
-	if (start2) {
+	if (start2 != NULL) {
 		start2->user_data[NPF_TRACKDIR_CHOICE] = INVALID_TRACKDIR;
 		start2->user_data[NPF_NODE_FLAGS] = 0;
 		NPFSetFlag(start2, NPF_FLAG_IGNORE_START_TILE, ignore_start_tile2);
diff --git a/src/settings.cpp b/src/settings.cpp
index 68e52fec6..6d36f623b 100644
--- a/src/settings.cpp
+++ b/src/settings.cpp
@@ -781,7 +781,7 @@ static bool CheckInterval(int32 p1)
 		vds = &Company::Get(_current_company)->settings.vehicle;
 	}
 
-	if (p1) {
+	if (p1 != 0) {
 		vds->servint_trains   = 50;
 		vds->servint_roadveh  = 50;
 		vds->servint_aircraft = 50;
diff --git a/src/strgen/strgen.cpp b/src/strgen/strgen.cpp
index a299eeea5..d3b86c4ec 100644
--- a/src/strgen/strgen.cpp
+++ b/src/strgen/strgen.cpp
@@ -724,7 +724,7 @@ static void HandleString(char *str, bool master)
 	/* Check if the string has a case..
 	 * The syntax for cases is IDENTNAME.case */
 	char *casep = strchr(str, '.');
-	if (casep) *casep++ = '\0';
+	if (casep != NULL) *casep++ = '\0';
 
 	/* Check if this string already exists.. */
 	LangString *ent = HashFind(str);
@@ -901,7 +901,7 @@ bool CompareFiles(const char *n1, const char *n2)
 			fclose(f1);
 			return false;
 		}
-	} while (l1);
+	} while (l1 != 0);
 
 	fclose(f2);
 	fclose(f1);
@@ -1320,7 +1320,7 @@ int CDECL main(int argc, char *argv[])
 		_masterlang = true;
 		ParseFile(pathbuf, true);
 		MakeHashOfStrings();
-		if (_errors) return 1;
+		if (_errors != 0) return 1;
 
 		/* write strings.h */
 		ottd_mkdir(dest_dir);
@@ -1336,7 +1336,7 @@ int CDECL main(int argc, char *argv[])
 		ParseFile(pathbuf, true);
 		MakeHashOfStrings();
 		ParseFile(replace_pathsep(mgo.argv[0]), false); // target file
-		if (_errors) return 1;
+		if (_errors != 0) return 1;
 
 		/* get the targetfile, strip any directories and append to destination path */
 		r = strrchr(mgo.argv[0], PATHSEPCHAR);
diff --git a/src/train_cmd.cpp b/src/train_cmd.cpp
index e234c9d28..05ce1aaad 100644
--- a/src/train_cmd.cpp
+++ b/src/train_cmd.cpp
@@ -2213,8 +2213,8 @@ static PBSTileInfo ExtendTrainReservation(const Train *v, TrackBits *new_tracks,
 			if (ft.m_tiles_skipped != 0) ft.m_new_tile -= TileOffsByDiagDir(ft.m_exitdir) * ft.m_tiles_skipped;
 
 			/* Choice found, path valid but not okay. Save info about the choice tile as well. */
-			if (new_tracks) *new_tracks = TrackdirBitsToTrackBits(ft.m_new_td_bits);
-			if (enterdir) *enterdir = ft.m_exitdir;
+			if (new_tracks != NULL) *new_tracks = TrackdirBitsToTrackBits(ft.m_new_td_bits);
+			if (enterdir != NULL) *enterdir = ft.m_exitdir;
 			return PBSTileInfo(ft.m_new_tile, ft.m_old_td, false);
 		}
 
diff --git a/src/video/win32_v.cpp b/src/video/win32_v.cpp
index dc230456d..62e8751d6 100644
--- a/src/video/win32_v.cpp
+++ b/src/video/win32_v.cpp
@@ -379,7 +379,7 @@ static LRESULT CALLBACK WndProcGdi(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lP
 
 			SelectPalette(hDC, hOldPalette, TRUE);
 			ReleaseDC(hwnd, hDC);
-			if (nChanged) InvalidateRect(hwnd, NULL, FALSE);
+			if (nChanged != 0) InvalidateRect(hwnd, NULL, FALSE);
 			return 0;
 		}
 
diff --git a/src/widget.cpp b/src/widget.cpp
index 364403e30..210ca6c8c 100644
--- a/src/widget.cpp
+++ b/src/widget.cpp
@@ -2559,9 +2559,9 @@ static int MakeWidgetTree(const NWidgetPart *parts, int count, NWidgetBase **par
 		}
 
 		/* Add sub_widget to parent container if available, otherwise return the widget to the caller. */
-		if (nwid_cont) nwid_cont->Add(sub_widget);
-		if (nwid_parent) nwid_parent->Add(sub_widget);
-		if (!nwid_cont && !nwid_parent) {
+		if (nwid_cont != NULL) nwid_cont->Add(sub_widget);
+		if (nwid_parent != NULL) nwid_parent->Add(sub_widget);
+		if (nwid_cont == NULL && nwid_parent == NULL) {
 			*parent = sub_widget;
 			return total_used;
 		}