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Properly remove SAO when worldedges are overtaken (#5889)

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* LuaEntitySAO: Remove beyond outermost mapchunk edges

Based on a commit by, and with help from, nerzhul.
Add 2 functions to class Mapgen:
A function to calculate actual mapgen edges, called from the Mapgen constructor.
A function called indirectly from content_sao.cpp per entity step to check SAO
position is within mapgen edges.

* Calculate borders from params not mapgen, which is not available everytime
This commit is contained in:
Loïc Blot 2017-06-03 19:57:02 +02:00 • committed by GitHub
parent 72eec0f6f5
commit c6d5441105
5 changed files with 84 additions and 8 deletions
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13
src/mapgen.h
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@ -138,7 +138,10 @@ struct MapgenParams {
water_level(1),
mapgen_limit(MAX_MAP_GENERATION_LIMIT),
flags(MG_CAVES | MG_LIGHT | MG_DECORATIONS),
bparams(NULL)
bparams(NULL),
m_sao_limit_min(MAX_MAP_GENERATION_LIMIT * BS),
m_sao_limit_max(MAX_MAP_GENERATION_LIMIT * BS),
m_sao_limit_calculated(false)
{
}
@ -146,6 +149,14 @@ struct MapgenParams {
virtual void readParams(const Settings *settings);
virtual void writeParams(Settings *settings) const;
bool saoPosOverLimit(const v3f &p);
private:
void calcMapgenEdges();
float m_sao_limit_min;
float m_sao_limit_max;
bool m_sao_limit_calculated;
};