move WorldGenerator to world/generator

src/world/generator/WorldGenerator.cpp

@@ -0,0 +1,36 @@
+#include "WorldGenerator.hpp"
+
+#include "content/Content.hpp"
+#include "voxels/Block.hpp"
+#include "voxels/Chunk.hpp"
+#include "voxels/voxel.hpp"
+#include "world/generator/GeneratorDef.hpp"
+
+WorldGenerator::WorldGenerator(
+    const GeneratorDef& def,
+    const Content* content
+) : def(def), content(content) {
+}
+
+#include "util/timeutil.hpp"
+void WorldGenerator::generate(voxel* voxels, int chunkX, int chunkZ, int seed) {
+    timeutil::ScopeLogTimer log(555);
+    auto heightmap = def.script->generateHeightmap(
+        {chunkX*CHUNK_W, chunkZ*CHUNK_D}, {CHUNK_W, CHUNK_D}
+    );
+    auto& baseStone = content->blocks.require("base:stone");
+    auto& baseWater = content->blocks.require("base:water");
+    for (uint z = 0; z < CHUNK_D; z++) {
+        for (uint x = 0; x < CHUNK_W; x++) {
+            auto height = heightmap->getValues()[z * CHUNK_W + x] * 255 + 10;
+            for (uint y = 0; y < CHUNK_H; y++) {
+                voxels[vox_index(x, y, z)].state = {};
+                if (y > height) {
+                    voxels[vox_index(x, y, z)].id = y <= 64 ? baseWater.rt.id : 0;
+                } else {
+                    voxels[vox_index(x, y, z)].id = baseStone.rt.id;
+                }
+            }
+        }
+    }
+}