advanced plants test

res/generators/default.lua

@@ -21,7 +21,8 @@ biomes = {
         },
         plant_chance = 0.5,
         plants = {
-            {block="base:grass", weight=1}
+            {block="base:grass", weight=1},
+            {block="base:flower", weight=0.03},
         }
     },
     desert = {

src/logic/scripting/scripting_world_generation.cpp

@@ -1,5 +1,8 @@
 #include "scripting.hpp"
 
+#include <algorithm>
+#include <functional>
+
 #include "scripting_commons.hpp"
 #include "typedefs.hpp"
 #include "lua/lua_engine.hpp"
@@ -188,7 +191,7 @@ static inline Biome load_biome(
         }
         lua::pop(L);
     }
-    // TODO: sort by weight descending
+    std::sort(plants.begin(), plants.end(), std::greater<PlantEntry>());
 
     BlocksLayers groundLayers = load_layers(L, "layers");
     BlocksLayers seaLayers = load_layers(L, "sea_layers");

src/world/generator/GeneratorDef.hpp

@@ -41,6 +41,7 @@ struct BiomeParameter {
     float weight;
 };
 
+/// @brief Plant is a single-block structure randomly generating in world
 struct PlantEntry {
     /// @brief Plant block id
     std::string block;
@@ -50,6 +51,10 @@ struct PlantEntry {
     struct {
         blockid_t id;
     } rt;
+
+    bool operator>(const PlantEntry& other) const {
+        return weight > other.weight;
+    }
 };
 
 struct BiomePlants {