cpp/openttd-patchpack/source Changeset - r26190:d89a21b2f0e7

Changeset - r26190:d89a21b2f0e7

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Michael Lutz - 2 years ago 2022-03-13 10:21:40
michi@icosahedron.de

Add: [NewGRF] Map seed as global variable.

This is useful to provide a feature-agnostic, stable random value that differs between games.
One of the possible uses is to e.g. use it to create pseudo-random regions for towns or industries.

2 files changed with 6 insertions and 1 deletions:

src/genworld.cpp

src/newgrf.cpp

0 comments (0 inline, 0 general)

src/genworld.cpp

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@@ @@ -93,7 +93,6 @@ static void _GenerateWorld() @@
 		_generating_world = true;
 		if (_network_dedicated) Debug(net, 3, "Generating map, please wait...");
 		/* Set the Random() seed to generation_seed so we produce the same map with the same seed */
 		if (_settings_game.game_creation.generation_seed == GENERATE_NEW_SEED) _settings_game.game_creation.generation_seed = _settings_newgame.game_creation.generation_seed = InteractiveRandom();
 		_random.SetSeed(_settings_game.game_creation.generation_seed);
 		SetGeneratingWorldProgress(GWP_MAP_INIT, 2);
 		SetObjectToPlace(SPR_CURSOR_ZZZ, PAL_NONE, HT_NONE, WC_MAIN_WINDOW, 0);
@@ @@ -302,6 +301,8 @@ void GenerateWorld(GenWorldMode mode, ui @@
 		_settings_game.construction.map_height_limit = std::max(MAP_HEIGHT_LIMIT_AUTO_MINIMUM, std::min(MAX_MAP_HEIGHT_LIMIT, estimated_height + MAP_HEIGHT_LIMIT_AUTO_CEILING_ROOM));
+	}
 	if (_settings_game.game_creation.generation_seed == GENERATE_NEW_SEED) _settings_game.game_creation.generation_seed = _settings_newgame.game_creation.generation_seed = InteractiveRandom();
 	/* Load the right landscape stuff, and the NewGRFs! */
 	GfxLoadSprites();
 	LoadStringWidthTable();

src/newgrf.cpp

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@@ @@ -7046,6 +7046,10 @@ static uint32 GetPatchVariable(uint8 par @@
 		case 0x16:
 			return SPR_SHORE_BASE;
 		/* Game map seed */
 		case 0x17:
 			return _settings_game.game_creation.generation_seed;
 		default:
 			grfmsg(2, "ParamSet: Unknown Patch variable 0x%02X.", param);
 			return 0;

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