Define and use limit constants for Irrlicht fixed-width types

src/irrlichttypes.h

@@ -48,4 +48,19 @@ using namespace irr;
 #endif
 #endif
 
+#define S8_MIN  (-0x7F - 1)
+#define S16_MIN (-0x7FFF - 1)
+#define S32_MIN (-0x7FFFFFFF - 1)
+#define S64_MIN (-0x7FFFFFFFFFFFFFFF - 1)
+
+#define S8_MAX  0x7F
+#define S16_MAX 0x7FFF
+#define S32_MAX 0x7FFFFFFF
+#define S64_MAX 0x7FFFFFFFFFFFFFFF
+
+#define U8_MAX  0xFF
+#define U16_MAX 0xFFFF
+#define U32_MAX 0xFFFFFFFF
+#define U64_MAX 0xFFFFFFFFFFFFFFFF
+
 #endif

src/map.cpp

@@ -1434,7 +1434,7 @@ void Map::timerUpdate(float dtime, float unload_timeout, u32 max_loaded_blocks,
 	beginSave();
 
 	// If there is no practical limit, we spare creation of mapblock_queue
-	if (max_loaded_blocks == (u32)-1) {
+	if (max_loaded_blocks == U32_MAX) {
 		for (std::map<v2s16, MapSector*>::iterator si = m_sectors.begin();
 				si != m_sectors.end(); ++si) {
 			MapSector *sector = si->second;

src/mapgen.cpp

@@ -441,7 +441,7 @@ void MapgenParams::save(Settings &settings) const
 	settings.setU64("seed", seed);
 	settings.setS16("water_level", water_level);
 	settings.setS16("chunksize", chunksize);
-	settings.setFlagStr("mg_flags", flags, flagdesc_mapgen, (u32)-1);
+	settings.setFlagStr("mg_flags", flags, flagdesc_mapgen, U32_MAX);
 	settings.setNoiseParams("mg_biome_np_heat", np_biome_heat);
 	settings.setNoiseParams("mg_biome_np_heat_blend", np_biome_heat_blend);
 	settings.setNoiseParams("mg_biome_np_humidity", np_biome_humidity);

src/mapgen_v5.cpp

@@ -160,7 +160,7 @@ void MapgenV5Params::readParams(const Settings *settings)
 
 void MapgenV5Params::writeParams(Settings *settings) const
 {
-	settings->setFlagStr("mgv5_spflags", spflags, flagdesc_mapgen_v5, (u32)-1);
+	settings->setFlagStr("mgv5_spflags", spflags, flagdesc_mapgen_v5, U32_MAX);
 
 	settings->setNoiseParams("mgv5_np_filler_depth", np_filler_depth);
 	settings->setNoiseParams("mgv5_np_factor",       np_factor);
@@ -429,7 +429,7 @@ MgStoneType MapgenV5::generateBiomes(float *heat_map, float *humidity_map)
 
 		// If there is air or water above enable top/filler placement, otherwise force
 		// nplaced to stone level by setting a number exceeding any possible filler depth.
-		u16 nplaced = (air_above || water_above) ? 0 : (u16)-1;
+		u16 nplaced = (air_above || water_above) ? 0 : U16_MAX;
 
 		for (s16 y = node_max.Y; y >= node_min.Y; y--) {
 			content_t c = vm->m_data[vi].getContent();
@@ -466,7 +466,7 @@ MgStoneType MapgenV5::generateBiomes(float *heat_map, float *humidity_map)
 				// This is done by aborting the cycle of top/filler placement
 				// immediately by forcing nplaced to stone level.
 				if (c_below == CONTENT_AIR || c_below == c_water_source)
-					nplaced = (u16)-1;
+					nplaced = U16_MAX;
 
 				if (nplaced < depth_top) {
 					vm->m_data[vi] = MapNode(biome->c_top);
@@ -491,7 +491,7 @@ MgStoneType MapgenV5::generateBiomes(float *heat_map, float *humidity_map)
 				air_above = true;
 				water_above = false;
 			} else {  // Possible various nodes overgenerated from neighbouring mapchunks
-				nplaced = (u16)-1;  // Disable top/filler placement
+				nplaced = U16_MAX;  // Disable top/filler placement
 				air_above = false;
 				water_above = false;
 			}

src/mapgen_v6.cpp

@@ -175,7 +175,7 @@ void MapgenV6Params::readParams(const Settings *settings)
 
 void MapgenV6Params::writeParams(Settings *settings) const
 {
-	settings->setFlagStr("mgv6_spflags", spflags, flagdesc_mapgen_v6, (u32)-1);
+	settings->setFlagStr("mgv6_spflags", spflags, flagdesc_mapgen_v6, U32_MAX);
 	settings->setFloat("mgv6_freq_desert", freq_desert);
 	settings->setFloat("mgv6_freq_beach",  freq_beach);
 

src/mapgen_v7.cpp

@@ -181,7 +181,7 @@ void MapgenV7Params::readParams(const Settings *settings)
 
 void MapgenV7Params::writeParams(Settings *settings) const
 {
-	settings->setFlagStr("mgv7_spflags", spflags, flagdesc_mapgen_v7, (u32)-1);
+	settings->setFlagStr("mgv7_spflags", spflags, flagdesc_mapgen_v7, U32_MAX);
 
 	settings->setNoiseParams("mgv7_np_terrain_base",    np_terrain_base);
 	settings->setNoiseParams("mgv7_np_terrain_alt",     np_terrain_alt);
@@ -636,7 +636,7 @@ MgStoneType MapgenV7::generateBiomes(float *heat_map, float *humidity_map)
 
 		// If there is air or water above enable top/filler placement, otherwise force
 		// nplaced to stone level by setting a number exceeding any possible filler depth.
-		u16 nplaced = (air_above || water_above) ? 0 : (u16)-1;
+		u16 nplaced = (air_above || water_above) ? 0 : U16_MAX;
 
 		for (s16 y = node_max.Y; y >= node_min.Y; y--) {
 			content_t c = vm->m_data[vi].getContent();
@@ -673,7 +673,7 @@ MgStoneType MapgenV7::generateBiomes(float *heat_map, float *humidity_map)
 				// This is done by aborting the cycle of top/filler placement
 				// immediately by forcing nplaced to stone level.
 				if (c_below == CONTENT_AIR || c_below == c_water_source)
-					nplaced = (u16)-1;
+					nplaced = U16_MAX;
 
 				if (nplaced < depth_top) {
 					vm->m_data[vi] = MapNode(biome->c_top);
@@ -698,7 +698,7 @@ MgStoneType MapgenV7::generateBiomes(float *heat_map, float *humidity_map)
 				air_above = true;
 				water_above = false;
 			} else {  // Possible various nodes overgenerated from neighbouring mapchunks
-				nplaced = (u16)-1;  // Disable top/filler placement
+				nplaced = U16_MAX;  // Disable top/filler placement
 				air_above = false;
 				water_above = false;
 			}

src/script/lua_api/l_mapgen.cpp

@@ -604,7 +604,7 @@ int ModApiMapgen::l_get_mapgen_params(lua_State *L)
 	lua_pushinteger(L, params->chunksize);
 	lua_setfield(L, -2, "chunksize");
 
-	std::string flagstr = writeFlagString(params->flags, flagdesc_mapgen, (u32)-1);
+	std::string flagstr = writeFlagString(params->flags, flagdesc_mapgen, U32_MAX);
 	lua_pushstring(L, flagstr.c_str());
 	lua_setfield(L, -2, "flags");
 

src/script/lua_api/l_object.cpp

@@ -1187,7 +1187,7 @@ int ObjectRef::l_hud_add(lua_State *L)
 	}
 
 	u32 id = getServer(L)->hudAdd(player, elem);
-	if (id == (u32)-1) {
+	if (id == U32_MAX) {
 		delete elem;
 		return 0;
 	}

src/server.cpp

@@ -589,7 +589,7 @@ void Server::AsyncRunStep(bool initial_step)
 		ScopeProfiler sp(g_profiler, "Server: map timer and unload");
 		m_env->getMap().timerUpdate(map_timer_and_unload_dtime,
 			g_settings->getFloat("server_unload_unused_data_timeout"),
-			(u32)-1);
+			U32_MAX);
 	}
 
 	/*

src/staticobject.cpp

@@ -50,7 +50,7 @@ void StaticObjectList::serialize(std::ostream &os)
 	size_t count = m_stored.size() + m_active.size();
 	// Make sure it fits into u16, else it would get truncated and cause e.g.
 	// issue #2610 (Invalid block data in database: unsupported NameIdMapping version).
-	if (count > (u16)-1) {
+	if (count > U16_MAX) {
 		errorstream << "StaticObjectList::serialize(): "
 			<< "too many objects (" << count << ") in list, "
 			<< "not writing them to disk." << std::endl;

src/unittest/test_utilities.cpp

@@ -282,7 +282,7 @@ void TestUtilities::testIsPowerOfTwo()
 		UASSERT(is_power_of_two((1 << exponent)) == true);
 		UASSERT(is_power_of_two((1 << exponent) + 1) == false);
 	}
-	UASSERT(is_power_of_two((u32)-1) == false);
+	UASSERT(is_power_of_two(U32_MAX) == false);
 }
 
 void TestUtilities::testMyround()