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Simple deco: Allow setting param2 value on placement

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Schematics can already be placed with a param2 value, but not
simple 1-node plant decorations of the simple type.

This adds a `param2` field to the simple deco type that is
checked to be between 0 and 255, and put to the placed node
at mapgen.

This can be used to put a degrotate value in, or e.g. a fill
value for leveltype nodes, or a place_param2 value at mapgen
placement, or vary the shape of meshoptions plantlike drawtype.
This commit is contained in:
Auke Kok 2016-12-06 16:39:33 -08:00 committed by paramat
parent 075833e393
commit 2e69711613
4 changed files with 12 additions and 2 deletions
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2
doc/lua_api.txt
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@ -4042,6 +4042,8 @@ The Biome API is still in an experimental phase and subject to change.
height_max = 0, height_max = 0,
-- ^ Number of nodes the decoration can be at maximum. -- ^ Number of nodes the decoration can be at maximum.
-- ^ If absent, the parameter 'height' is used as a constant. -- ^ If absent, the parameter 'height' is used as a constant.
param2 = 0,
-- ^ Param2 value of placed decoration node.
----- Schematic-type parameters ----- Schematic-type parameters
schematic = "foobar.mts", schematic = "foobar.mts",

2
src/mg_decoration.cpp
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@ -315,7 +315,7 @@ size_t DecoSimple::generate(MMVManip *vm, PcgRandom *pr, v3s16 p)
!force_placement) !force_placement)
break; break;
vm->m_data[vi] = MapNode(c_place); vm->m_data[vi] = MapNode(c_place, 0, deco_param2);
} }
return 1; return 1;

1
src/mg_decoration.h
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@ -100,6 +100,7 @@ public:
std::vector<content_t> c_decos; std::vector<content_t> c_decos;
s16 deco_height; s16 deco_height;
s16 deco_height_max; s16 deco_height_max;
u8 deco_param2;
}; };
class DecoSchematic : public Decoration { class DecoSchematic : public Decoration {

7
src/script/lua_api/l_mapgen.cpp
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@ -975,6 +975,7 @@ bool read_deco_simple(lua_State *L, DecoSimple *deco)
deco->deco_height = getintfield_default(L, index, "height", 1); deco->deco_height = getintfield_default(L, index, "height", 1);
deco->deco_height_max = getintfield_default(L, index, "height_max", 0); deco->deco_height_max = getintfield_default(L, index, "height_max", 0);
deco->deco_param2 = getintfield_default(L, index, "param2", 0);
if (deco->deco_height <= 0) { if (deco->deco_height <= 0) {
errorstream << "register_decoration: simple decoration height" errorstream << "register_decoration: simple decoration height"
@ -990,6 +991,12 @@ bool read_deco_simple(lua_State *L, DecoSimple *deco)
return false; return false;
} }
if ((deco->deco_param2 < 0) || (deco->deco_param2 > 255)) {
errorstream << "register_decoration: param2 out of bounds (0-255)"
<< std::endl;
return false;
}
return true; return true;
} }