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FindSpawnPos: Let mapgens decide what spawn altitude is suitable

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To avoid spawn search failing in new specialised mapgens
Increase spawn search range to 4000 nodes
Add getSpawnLevelAtPoint() functions to EmergeManager, class Mapgen
and all mapgens
Remove getGroundLevelAtPoint() functions from all mapgens except mgv6
(possibly to be re-added later in the correct form to return actual
ground level)
Make mgvalleys flag names consistent with other mapgens
Remove now unused 'vertical spawn range' setting
This commit is contained in:
paramat
2016-02-04 01:03:31 +00:00
parent 38e7122600
commit 4adbd69a37
19 changed files with 122 additions and 77 deletions
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21
src/mapgen_flat.cpp
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@@ -192,18 +192,25 @@ void MapgenFlatParams::writeParams(Settings *settings) const
/////////////////////////////////////////////////////////////////
int MapgenFlat::getGroundLevelAtPoint(v2s16 p)
int MapgenFlat::getSpawnLevelAtPoint(v2s16 p)
{
s16 level_at_point = ground_level;
float n_terrain = NoisePerlin2D(&noise_terrain->np, p.X, p.Y, seed);
if ((spflags & MGFLAT_LAKES) && n_terrain < lake_threshold) {
s16 depress = (lake_threshold - n_terrain) * lake_steepness;
return ground_level - depress;
level_at_point = ground_level -
(lake_threshold - n_terrain) * lake_steepness;
} else if ((spflags & MGFLAT_HILLS) && n_terrain > hill_threshold) {
s16 rise = (n_terrain - hill_threshold) * hill_steepness;
return ground_level + rise;
} else {
return ground_level;
level_at_point = ground_level +
(n_terrain - hill_threshold) * hill_steepness;
}
if (ground_level < water_level) // Ocean world, allow spawn in water
return MYMAX(level_at_point, water_level);
else if (level_at_point > water_level)
return level_at_point; // Spawn on land
else
return MAX_MAP_GENERATION_LIMIT; // Unsuitable spawn point
}