multichunk meshing

1 files changed, 37 insertions, 34 deletions

diff --git a/src/chunk.cpp b/src/chunk.cpp
index 9d646f8..3a71031 100644
--- a/src/chunk.cpp
+++ b/src/chunk.cpp
@@ -3,7 +3,7 @@
 
 namespace app {
 
-static std::map<std::string, std::unique_ptr<Chunk>> chunks{};
+static std::map<std::pair<uint32_t, uint32_t>, Chunk*> chunks{};
 
 Chunk::Chunk(uint32_t gridX, uint32_t gridZ, uint32_t world_seed) 
   : world_seed{world_seed},
@@ -14,70 +14,73 @@ Chunk::Chunk(uint32_t gridX, uint32_t gridZ, uint32_t world_seed)
 }
 
 Chunk* Chunk::newChunk(uint32_t gridX, uint32_t gridZ, uint32_t world_seed) {
-  std::unique_ptr<Chunk> chunk = std::make_unique<Chunk>(gridX, gridZ, world_seed);
-  std::string key = gridX + "." + gridZ;
-  chunks[key] = std::move(chunk);
-  return chunks[key].get();
+  Chunk* chunk = new Chunk(gridX, gridZ, world_seed);
+  chunks[{gridX, gridZ}] = std::move(chunk);
+  return chunks[{gridX, gridZ}];
 }
 
-void Chunk::reset() {
-  chunks.clear();
-}
-
-std::shared_ptr<xe::Model> Chunk::getMesh() {
-  if(reloadRequired) {
-    delete chunkMesh.get();
-    xe::Model::Builder builder{};
-    builder.vertexData = vertexData;
-    builder.vertexSize = 32;
-    chunkMesh = std::make_shared<xe::Model>(xe::Engine::getInstance()->getDevice(), builder);
+Chunk* Chunk::getChunk(uint32_t gridX, uint32_t gridZ) {
+  if(chunks.count({gridX, gridZ})) {
+    return chunks[{gridX, gridZ}];
+  } else {
+    return NULL;
   }
-  return chunkMesh;
 }
 
 uint8_t Chunk::getBlock(uint32_t x, uint32_t y, uint32_t z) {
-  if(y < 0 || y > 256) return AIR;
+  if(y > 256) return AIR;
+  if(y < 0) return INVALID;
   int chunkX = gridX;
   int chunkZ = gridZ;
   if(x < 0) {
     chunkX--;
     x = 15;
-  } else if(x > 16) {
-    chunkX ++;
+  } else if(x > 15) {
+    chunkX++;
     x = 0;
   }
   if(z < 0) {
     chunkZ--;
     z = 15;
-  } else if(z > 16) {
-    chunkZ ++;
+  } else if(z > 15) {
+    chunkZ++;
     z = 0;
   }
   if(chunkX == gridX && chunkZ == gridZ) {
-    int index = (z * 16 * 256) + (y * 16) + x;
+    int index = x + (z * 16) + (y * 256);
     return blocks[index];
   } else {
     Chunk* chunk = getChunk(chunkX, chunkZ);
     if(chunk == nullptr) {
-      return AIR;
+      return INVALID;
     } else {
-      int index = (z * 16 * 256) + (y * 16) + x;
+      int index = x + (z * 16) + (y * 256);
       return chunk->blocks[index];
     }
   }
 }
 
 void Chunk::setBlock(uint32_t x, uint32_t y, uint32_t z, uint8_t block) {
-  int index = (z * 16 * 256) + (y * 16) + x;
+  int index = x + (z * 16) + (y * 256);
   blocks[index] = block;
 }
 
-Chunk* Chunk::getChunk(uint32_t x, uint32_t z) {
-  std::string key = x + "." + z;
-  if(chunks.count(key))
-    return chunks[key].get();
-  else
-    return nullptr;
+void Chunk::reset() {
+  for(const auto &[key, chunk]: chunks) {
+    delete chunk;
+  }
+  chunks.clear();
+}
+
+std::shared_ptr<xe::Model> Chunk::getMesh() {
+  if(reloadRequired) {
+    delete chunkMesh.get();
+    xe::Model::Builder builder{};
+    builder.vertexData = vertexData;
+    builder.vertexSize = 32;
+    chunkMesh = std::make_shared<xe::Model>(xe::Engine::getInstance()->getDevice(), builder);
+  }
+  return chunkMesh;
 }
 
 void Chunk::createMeshAsync() {
@@ -134,11 +137,11 @@ void Chunk::addVerticies(uint32_t side, uint32_t x, uint32_t y, uint32_t z) {
 void Chunk::generate() {
   blocks.resize(16*16*256);
   
-  const PerlinNoise perlin{123};
+  const PerlinNoise perlin{world_seed};
 
   for(int x = 0; x < 16; x++) {
     for(int z = 0; z < 16; z++) {
-      int height = perlin.octave2D_01((x * 0.01), (z * 0.01), 4) * 5;
+      int height = perlin.octave2D_01((( x + gridX * 16) * 0.01), ((z + gridZ * 16) * 0.01), 4) * 10;
       for(int y = 0; y < 256; y++) {
         if(y <= height)
           setBlock(x, y, z, DIRT);