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-rw-r--r--doc/lua_api.txt9
-rw-r--r--src/mapgen.cpp48
-rw-r--r--src/mapgen.h14
-rw-r--r--src/scriptapi.cpp1
-rw-r--r--src/scriptapi_types.cpp7
-rw-r--r--src/scriptapi_types.h2
6 files changed, 72 insertions, 9 deletions
diff --git a/doc/lua_api.txt b/doc/lua_api.txt
index beb70db15..ca00fc1f9 100644
--- a/doc/lua_api.txt
+++ b/doc/lua_api.txt
@@ -394,6 +394,13 @@ All default ores are of the uniformly-distributed scatter type.
Places ore if there are no more than clust_scarcity number of specified nodes within a Von Neumann
neighborhood of clust_size radius.
+Ore attributes
+-------------------
+Currently supported flags: absheight
+ - absheight
+ Also produce this same ore between the height range of -height_max and -height_min.
+ Useful for having ore in sky realms without having to duplicate ore entries.
+
Representations of simple things
--------------------------------
Position/vector:
@@ -1723,6 +1730,8 @@ Ore definition (register_ore)
^ In this example, there is a 3x3x3 cluster where 8 out of the 27 nodes are coal ore
height_min = -31000,
height_max = 64,
+ flags = "",
+ ^ Attributes for this ore generation
noise_threshhold = 0.5,
^ If noise is above this threshhold, ore is placed. Not needed for a uniform distribution
noise_params = {offset=0, scale=1, spread={x=100, y=100, z=100}, seed=23, octaves=3, persist=0.70}
diff --git a/src/mapgen.cpp b/src/mapgen.cpp
index b5deaae52..64c1886b3 100644
--- a/src/mapgen.cpp
+++ b/src/mapgen.cpp
@@ -42,7 +42,14 @@ FlagDesc flagdesc_mapgen[] = {
{"v6_jungles", MGV6_JUNGLES},
{"v6_biome_blend", MGV6_BIOME_BLEND},
{"flat", MG_FLAT},
- {NULL, 0}
+ {NULL, 0}
+};
+
+FlagDesc flagdesc_ore[] = {
+ {"absheight", OREFLAG_ABSHEIGHT},
+ {"scatter_noisedensity", OREFLAG_DENSITY},
+ {"claylike_nodeisnt", OREFLAG_NODEISNT},
+ {NULL, 0}
};
@@ -87,17 +94,28 @@ void Ore::resolveNodeNames(INodeDefManager *ndef) {
void OreScatter::generate(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax) {
- if (nmin.Y > height_max || nmax.Y < height_min)
+ int in_range = 0;
+
+ in_range |= (nmin.Y <= height_max && nmax.Y >= height_min);
+ if (flags & OREFLAG_ABSHEIGHT)
+ in_range |= (nmin.Y >= -height_max && nmax.Y <= -height_min) << 1;
+ if (!in_range)
return;
-
+
resolveNodeNames(mg->ndef);
MapNode n_ore(ore);
ManualMapVoxelManipulator *vm = mg->vm;
PseudoRandom pr(blockseed);
+ int ymin, ymax;
- int ymin = MYMAX(nmin.Y, height_min);
- int ymax = MYMIN(nmax.Y, height_max);
+ if (in_range & ORE_RANGE_MIRROR) {
+ ymin = MYMAX(nmin.Y, -height_max);
+ ymax = MYMIN(nmax.Y, -height_min);
+ } else {
+ ymin = MYMAX(nmin.Y, height_min);
+ ymax = MYMIN(nmax.Y, height_max);
+ }
if (clust_size >= ymax - ymin + 1)
return;
@@ -131,17 +149,29 @@ void OreScatter::generate(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax) {
void OreSheet::generate(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax) {
- if (nmin.Y > height_max || nmax.Y < height_min)
- return;
+ int in_range = 0;
+ in_range |= (nmin.Y <= height_max && nmax.Y >= height_min);
+ if (flags & OREFLAG_ABSHEIGHT)
+ in_range |= (nmin.Y >= -height_max && nmax.Y <= -height_min) << 1;
+ if (!in_range)
+ return;
+
resolveNodeNames(mg->ndef);
MapNode n_ore(ore);
ManualMapVoxelManipulator *vm = mg->vm;
PseudoRandom pr(blockseed + 4234);
+ int ymin, ymax;
- int ymin = MYMAX(nmin.Y, height_min);
- int ymax = MYMIN(nmax.Y, height_max);
+ if (in_range & ORE_RANGE_MIRROR) {
+ ymin = MYMAX(nmin.Y, -height_max);
+ ymax = MYMIN(nmax.Y, -height_min);
+ } else {
+ ymin = MYMAX(nmin.Y, height_min);
+ ymax = MYMIN(nmax.Y, height_max);
+ }
+
if (clust_size >= ymax - ymin + 1)
return;
diff --git a/src/mapgen.h b/src/mapgen.h
index ee8a8c20c..e708f23b1 100644
--- a/src/mapgen.h
+++ b/src/mapgen.h
@@ -36,7 +36,17 @@ with this program; if not, write to the Free Software Foundation, Inc.,
#define MGV6_BIOME_BLEND 0x10
#define MG_FLAT 0x20
+/////////////////// Ore generation flags
+// Use absolute value of height to determine ore placement
+#define OREFLAG_ABSHEIGHT 0x01
+// Use 3d noise to get density of ore placement, instead of just the position
+#define OREFLAG_DENSITY 0x02 // not yet implemented
+// For claylike ore types, place ore if the number of surrounding
+// nodes isn't the specified node
+#define OREFLAG_NODEISNT 0x04 // not yet implemented
+
extern FlagDesc flagdesc_mapgen[];
+extern FlagDesc flagdesc_ore[];
class BiomeDefManager;
class Biome;
@@ -103,6 +113,9 @@ enum OreType {
ORE_CLAYLIKE
};
+#define ORE_RANGE_ACTUAL 1
+#define ORE_RANGE_MIRROR 2
+
class Ore {
public:
std::string ore_name;
@@ -115,6 +128,7 @@ public:
s16 clust_size; // how large (in nodes) a chunk of ore is
s16 height_min;
s16 height_max;
+ u32 flags; // attributes for this ore
float nthresh; // threshhold for noise at which an ore is placed
NoiseParams *np; // noise for distribution of clusters (NULL for uniform scattering)
Noise *noise;
diff --git a/src/scriptapi.cpp b/src/scriptapi.cpp
index 81fcc08d3..c372456d4 100644
--- a/src/scriptapi.cpp
+++ b/src/scriptapi.cpp
@@ -717,6 +717,7 @@ static int l_register_ore(lua_State *L)
ore->clust_size = getintfield_default(L, index, "clust_size", 0);
ore->height_min = getintfield_default(L, index, "height_min", 0);
ore->height_max = getintfield_default(L, index, "height_max", 0);
+ ore->flags = getflagsfield(L, index, "flags", flagdesc_ore);
ore->nthresh = getfloatfield_default(L, index, "noise_threshhold", 0.);
lua_getfield(L, index, "noise_params");
diff --git a/src/scriptapi_types.cpp b/src/scriptapi_types.cpp
index 3d06f1623..01a9b3bc3 100644
--- a/src/scriptapi_types.cpp
+++ b/src/scriptapi_types.cpp
@@ -336,6 +336,13 @@ void setboolfield(lua_State *L, int table,
lua_setfield(L, table, fieldname);
}
+u32 getflagsfield(lua_State *L, int table,
+ const char *fieldname, FlagDesc *flagdesc) {
+ std::string flagstring;
+
+ flagstring = getstringfield_default(L, table, fieldname, "");
+ return readFlagString(flagstring, flagdesc);
+}
/* minetest specific types */
MapNode readnode(lua_State *L, int index, INodeDefManager *ndef)
diff --git a/src/scriptapi_types.h b/src/scriptapi_types.h
index e3a611a9d..1eeed66df 100644
--- a/src/scriptapi_types.h
+++ b/src/scriptapi_types.h
@@ -51,6 +51,8 @@ bool getboolfield(lua_State *L, int table,
const char *fieldname, bool &result);
bool getfloatfield(lua_State *L, int table,
const char *fieldname, float &result);
+u32 getflagsfield(lua_State *L, int table,
+ const char *fieldname, FlagDesc *flagdesc);
std::string checkstringfield(lua_State *L, int table,
const char *fieldname);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-26 19:10:52 +0000