feat: add river biome

include/Cubed/constants.hpp

@@ -4,8 +4,9 @@ namespace Cubed {
 
 constexpr int WORLD_SIZE_Y = 256;
 constexpr int CHUCK_SIZE = 16;
+constexpr int SEA_LEVEL = 64;
 
-constexpr int MAX_BLOCK_NUM = 7;
+constexpr int MAX_BLOCK_NUM = 8;
 constexpr int MAX_UI_NUM = 1;
 constexpr int MAX_BLOCK_STATUS = 1;
 constexpr int MAX_BIOME_SUM = 4;

include/Cubed/gameplay/biome.hpp

@@ -12,7 +12,7 @@ constexpr float FOREST_FREQ = 1.2f;
 constexpr float DESERT_FREQ = 1.2f;
 constexpr float MOUNTAIN_FREQ = 2.0f;
 
-enum class Biome { PLAIN = 0, FOREST, DESERT, MOUNTAIN, NONE };
+enum class Biome { PLAIN = 0, FOREST, DESERT, MOUNTAIN, RIVER, NONE };
 
 struct BiomeHeightRange {
     int base_y;
@@ -26,10 +26,10 @@ struct BiomeNonAdjacent {
 };
 
 static inline const std::vector<BiomeNonAdjacent> NON_ADJACENT{
-    {{Biome::PLAIN, {Biome::NONE}, Biome::PLAIN},
-     {Biome::FOREST, {Biome::DESERT}, Biome::PLAIN},
-     {Biome::DESERT, {Biome::MOUNTAIN, Biome::FOREST}, Biome::PLAIN},
-     {Biome::MOUNTAIN, {Biome::DESERT}, Biome::PLAIN}}};
+    {{Biome::PLAIN, {Biome::DESERT}, Biome::RIVER},
+     {Biome::FOREST, {Biome::DESERT}, Biome::RIVER},
+     {Biome::DESERT, {Biome::MOUNTAIN, Biome::FOREST}, Biome::RIVER},
+     {Biome::MOUNTAIN, {Biome::DESERT, Biome::FOREST}, Biome::RIVER}}};
 
 struct BaseBiomeParams {
     Biome biome;
@@ -49,6 +49,8 @@ struct DesertParams : public BaseBiomeParams {};
 
 struct MountainParams : public BaseBiomeParams {};
 
+struct RiverParams : public BaseBiomeParams {};
+
 std::string get_biome_str(Biome biome);
 Biome get_biome_from_noise(float temp, float humid);
 std::array<float, 3> get_noise_frequencies_for_biome(Biome biome);
@@ -61,5 +63,5 @@ PlainParams& plain_params();
 ForestParams& forest_params();
 DesertParams& desert_params();
 MountainParams& mountain_params();
-
+RiverParams& river_params();
 } // namespace Cubed

include/Cubed/gameplay/block.hpp

@@ -39,7 +39,7 @@ struct LookBlock {
 };
 
 constexpr std::array<std::string_view, MAX_BLOCK_NUM> BLOCK_REISTER{
-    "air", "grass_block", "dirt", "stone", "sand", "log", "leaf"};
+    "air", "grass_block", "dirt", "stone", "sand", "log", "leaf", "water"};
 
 const std::array<bool, MAX_BLOCK_NUM> TRANSPARENT_MAP{
     true, false, false, false, false, false, true};

include/Cubed/gameplay/chunk_generator.hpp

@@ -1,6 +1,7 @@
 #pragma once
 
 #include "Cubed/constants.hpp"
+#include "Cubed/gameplay/biome.hpp"
 #include "Cubed/tools/cubed_random.hpp"
 
 #include <atomic>
@@ -49,6 +50,9 @@ private:
     static inline std::atomic<bool> is_seed_change{false};
     Chunk& m_chunk;
     Random m_random;
+    std::array<Biome, 4> neighbor_biome{Biome::NONE, Biome::NONE, Biome::NONE,
+                                        Biome::NONE};
+    bool is_neighbor_river = false;
 };
 
 } // namespace Cubed