add test ore (coal)

res/content/base/blocks/coal_ore.json

@@ -0,0 +1,3 @@
+{
+    "texture": "coal_ore"
+}

res/content/base/content.json

@@ -1,8 +1,6 @@
 {
-  "entities": [
+  "items": [
-    "drop",
+    "bazalt_breaker"
-    "player",
-    "falling_block"
   ],
   "blocks": [
     "dirt",
@@ -28,9 +26,12 @@
     "pipe",
     "lightbulb",
     "torch",
-    "wooden_door"
+    "wooden_door",
+    "coal_ore"
   ],
-  "items": [
+  "entities": [
-    "bazalt_breaker"
+    "drop",
+    "player",
+    "falling_block"
   ]
 }

res/generators/default.lua

@@ -8,6 +8,12 @@ biomes = json.parse(file.read("core:generators/default/biomes.json"))
 
 function place_structures(x, z, w, d, seed, hmap)
     local placements = {}
+    for i=1,10 do
+        local sx = math.random() * w
+        local sz = math.random() * d
+        local sy = math.random() * hmap:at(sx, sz)*256 - 6
+        table.insert(placements, {"coal_ore0", {sx, sy, sz}, math.random()*4})
+    end
     return placements
 end
 

res/generators/default/structures.json

@@ -2,5 +2,6 @@
     "tree0": {},
     "tree1": {},
     "tree2": {},
-    "tower": {}
+    "tower": {},
+    "coal_ore0": {}
 }

src/logic/scripting/scripting_world_generation.cpp

@@ -79,6 +79,7 @@ public:
     }
 
     std::vector<StructurePlacement> placeStructures(
+        const GeneratorDef& def,
         const glm::ivec2& offset, const glm::ivec2& size, uint64_t seed,
         const std::shared_ptr<Heightmap>& heightmap
     ) override {
@@ -98,7 +99,15 @@ public:
                     lua::rawgeti(L, i);
 
                     lua::rawgeti(L, 1);
-                    int structIndex = lua::tointeger(L, -1);
+                    int structIndex = 0;
+                    if (lua::isstring(L, -1)) {
+                        const auto& found = def.structuresIndices.find(lua::require_string(L, -1));
+                        if (found != def.structuresIndices.end()) {
+                            structIndex = found->second;
+                        }
+                    } else {
+                        structIndex = lua::tointeger(L, -1);
+                    }
                     lua::pop(L);
 
                     lua::rawgeti(L, 2);

src/world/generator/GeneratorDef.hpp

@@ -135,6 +135,7 @@ public:
         const glm::ivec2& offset, const glm::ivec2& size, uint64_t seed) = 0;
 
     virtual std::vector<StructurePlacement> placeStructures(
+        const GeneratorDef& def,
         const glm::ivec2& offset, const glm::ivec2& size, uint64_t seed,
         const std::shared_ptr<Heightmap>& heightmap) = 0;
 

src/world/generator/WorldGenerator.cpp

@@ -175,7 +175,7 @@ void WorldGenerator::generateStructures(
     const auto& heightmap = prototype.heightmap;
 
     util::concat(prototype.structures, def.script->placeStructures(
-        {chunkX * CHUNK_W, chunkZ * CHUNK_D}, {CHUNK_W, CHUNK_D}, seed,
+        def, {chunkX * CHUNK_W, chunkZ * CHUNK_D}, {CHUNK_W, CHUNK_D}, seed,
         heightmap
     ));
     for (const auto& placement : prototype.structures) {