fix: safe_int_to_biome not include river

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

src/dev_panel.cpp

@@ -223,6 +223,32 @@ void DevPanel::show_biome_table_bar() {
                              AMPLITUDE_MIN, AMPLITUDE_MAX);
             ImGui::EndTabItem();
         }
+        if (ImGui::BeginTabItem("River")) {
+            ImGui::SliderFloat("MinTemp##river", &river_params().temp.first,
+                               TEMP_MIN, TEMP_MAX);
+            ImGui::SliderFloat("MaxTemp##river", &river_params().temp.second,
+                               TEMP_MIN, TEMP_MAX);
+            ImGui::SliderFloat("MinHumid##river", &river_params().humid.first,
+                               HUMID_MIN, HUMID_MAX);
+            ImGui::SliderFloat("MaxHumid##river", &river_params().humid.second,
+                               HUMID_MIN, HUMID_MAX);
+            ImGui::SliderFloat("Freq One##river",
+                               &river_params().frequencies[0], FREQ1_MIN,
+                               FREQ1_MAX);
+            ImGui::SliderFloat("Freq Two##river",
+                               &river_params().frequencies[1], FREQ2_MIN,
+                               FREQ2_MAX);
+            ImGui::SliderFloat("Freq Three##river",
+                               &river_params().frequencies[2], FREQ3_MIN,
+                               FREQ3_MAX);
+            ImGui::SliderInt("Base Y##river",
+                             &river_params().height_range.base_y,
+                             HEIGHT_BASE_MIN, HEIGHT_BASE_MAX);
+            ImGui::SliderInt("Amplitude##river",
+                             &river_params().height_range.amplitude,
+                             AMPLITUDE_MIN, AMPLITUDE_MAX);
+            ImGui::EndTabItem();
+        }
         ImGui::EndTabBar();
     }
 }

src/gameplay/biome.cpp

@@ -19,7 +19,7 @@ static ForestParams forest{{Biome::FOREST,
                             {0.5f, 1.0f},
                             {0.5f, 1.0f},
                             {0.004f, 0.010f, 0.020f},
-                            {62, 12}},
+                            {62, 8}},
                            0.1f
 
 };
@@ -36,6 +36,12 @@ static MountainParams mountain{{Biome::MOUNTAIN,
                                 {0.006f, 0.014f, 0.010f},
                                 {70, 70}}};
 
+static RiverParams river{{Biome::RIVER,
+                          {-0.1f, -0.1f},
+                          {-0.1f, -0.1f},
+                          {0.003f, 0.010f, 0.020f},
+                          {50, 6}}};
+
 std::string get_biome_str(Biome biome) {
     std::string str;
     using enum Biome;
@@ -52,6 +58,9 @@ std::string get_biome_str(Biome biome) {
     case MOUNTAIN:
         str = "Mountain";
         break;
+    case RIVER:
+        str = "River";
+        break;
     case NONE:
         str = "Unknown";
         break;
@@ -109,6 +118,8 @@ std::array<float, 3> get_noise_frequencies_for_biome(Biome biome) {
         return desert.frequencies;
     case MOUNTAIN:
         return mountain.frequencies;
+    case RIVER:
+        return river.frequencies;
     case NONE:
         ASSERT_MSG(false, "Chunk Biome is None");
         throw std::invalid_argument{"Chunk Biome is None"};
@@ -128,6 +139,8 @@ BiomeHeightRange get_biome_height_range(Biome biome) {
         return desert.height_range;
     case MOUNTAIN:
         return mountain.height_range;
+    case RIVER:
+        return river.height_range;
     case NONE:
         ASSERT_MSG(false, "Chunk Biome is None");
         throw std::invalid_argument{"Chunk Biome is None"};
@@ -139,7 +152,7 @@ BiomeHeightRange get_biome_height_range(Biome biome) {
 Biome safe_int_to_biome(int x) {
     using enum Biome;
     static const std::unordered_map<int, Biome> INT_TO_BIOME_MAP{
-        {0, PLAIN}, {1, FOREST}, {2, DESERT}, {3, MOUNTAIN}};
+        {0, PLAIN}, {1, FOREST}, {2, DESERT}, {3, MOUNTAIN}, {4, RIVER}};
 
     auto it = INT_TO_BIOME_MAP.find(x);
     ASSERT_MSG(it != INT_TO_BIOME_MAP.end(), ":Can't Find");
@@ -194,5 +207,5 @@ PlainParams& plain_params() { return plain; }
 ForestParams& forest_params() { return forest; }
 DesertParams& desert_params() { return desert; }
 MountainParams& mountain_params() { return mountain; }
-
+RiverParams& river_params() { return river; }
 } // namespace Cubed

src/gameplay/chunk_generator.cpp

@@ -7,7 +7,7 @@
 
 #include <numeric>
 namespace Cubed {
-
+constexpr int BLEND_RADIUS = 12;
 ChunkGenerator::ChunkGenerator(Chunk& chunk) : m_chunk(chunk) {
     ASSERT_MSG(is_init, "ChunksGenerator is not init");
     ChunkPos pos = m_chunk.get_chunk_pos();
@@ -52,11 +52,16 @@ void ChunkGenerator::assign_chunk_biome() {
 void ChunkGenerator::resolve_biome_adjacency_conflict(
     const std::array<const Chunk*, 4>& adj_chunks) {
     auto m_biome = m_chunk.biome();
-    for (auto& chunk : adj_chunks) {
+    for (int i = 0; i < 4; i++) {
+        auto& chunk = adj_chunks[i];
         if (chunk == nullptr) {
             continue;
         }
         Biome biome = chunk->get_biome();
+        neighbor_biome[i] = biome;
+        if (biome == Biome::RIVER) {
+            is_neighbor_river = true;
+        }
         for (const auto& non : NON_ADJACENT) {
             if (m_biome != non.first) {
                 continue;
@@ -104,9 +109,8 @@ void ChunkGenerator::generate_heightmap() {
 void ChunkGenerator::blend_heightmap_boundaries(
     const std::array<std::optional<HeightMapArray>, 4>& neighbor_heightmap) {
     auto& m_heightmap = m_chunk.heightmap();
-
+    auto m_biome = m_chunk.biome();
     // Width of interpolation influence (in number of cells)
-    constexpr int BLEND_RADIUS = 12;
 
     for (int x = 0; x < SIZE_X; x++) {
         for (int z = 0; z < SIZE_Z; z++) {
@@ -116,7 +120,8 @@ void ChunkGenerator::blend_heightmap_boundaries(
 
             // --- Right neighbor neighbor[0]: (1, 0) ---
             // Blend when x is close to SIZE_X-1
-            if (neighbor_heightmap[0] != std::nullopt) {
+            if (neighbor_heightmap[0] != std::nullopt &&
+                neighbor_biome[0] != m_biome) {
                 int dist = (SIZE_X - 1) - x; // distance from right border
                 if (dist < BLEND_RADIUS) {
                     // Neighbor's boundary row is its x=0 column
@@ -133,7 +138,8 @@ void ChunkGenerator::blend_heightmap_boundaries(
             }
 
             // --- Left neighbor neighbor[1]: (-1, 0) ---
-            if (neighbor_heightmap[1] != std::nullopt) {
+            if (neighbor_heightmap[1] != std::nullopt &&
+                neighbor_biome[1] != m_biome) {
                 int dist = x; // distance from left border
                 if (dist < BLEND_RADIUS) {
                     float neighbor_h = static_cast<float>(
@@ -146,7 +152,8 @@ void ChunkGenerator::blend_heightmap_boundaries(
             }
 
             // --- Front neighbor neighbor[2]: (0, 1) ---
-            if (neighbor_heightmap[2] != std::nullopt) {
+            if (neighbor_heightmap[2] != std::nullopt &&
+                neighbor_biome[2] != m_biome) {
                 int dist = (SIZE_Z - 1) - z;
                 if (dist < BLEND_RADIUS) {
                     float neighbor_h =
@@ -159,7 +166,8 @@ void ChunkGenerator::blend_heightmap_boundaries(
             }
 
             // --- Back neighbor neighbor[3]: (0, -1) ---
-            if (neighbor_heightmap[3] != std::nullopt) {
+            if (neighbor_heightmap[3] != std::nullopt &&
+                neighbor_biome[3] != m_biome) {
                 int dist = z;
                 if (dist < BLEND_RADIUS) {
                     float neighbor_h = static_cast<float>(
@@ -213,6 +221,17 @@ void ChunkGenerator::generate_terrain_blocks() {
                 for (int y = height - 5; y <= height; y++) {
                     m_blocks[Chunk::get_index(x, y, z)] = 4;
                 }
+            } else if (m_biome == Biome::RIVER) {
+                for (int y = height - 5; y <= height - 1; y++) {
+                    m_blocks[Chunk::get_index(x, y, z)] = 2;
+                }
+                for (int y = height; y <= height; y++) {
+                    if (y >= SEA_LEVEL - 1) {
+                        m_blocks[Chunk::get_index(x, y, z)] = 1;
+                    } else {
+                        m_blocks[Chunk::get_index(x, y, z)] = 2;
+                    }
+                }
             } else {
                 for (int y = height - 5; y <= height - 1; y++) {
                     m_blocks[Chunk::get_index(x, y, z)] = 2;
@@ -230,7 +249,6 @@ void ChunkGenerator::blend_surface_blocks_borders(
     auto& m_blocks = m_chunk.blocks();
     auto& m_heightmap = m_chunk.heightmap();
 
-    constexpr int BLEND_RADIUS = 12;
     constexpr int WORLD_HEIGHT = WORLD_SIZE_Y;
 
     // Helper lambda: get top block type from a neighbor's block data at (nx,
@@ -325,7 +343,19 @@ void ChunkGenerator::blend_surface_blocks_borders(
 
             // Update the top block if the type changed
             if (final_type != type_self) {
+                // top block
+                if (m_chunk.biome() == Biome::RIVER && final_type == 1) {
+                    final_type = 2;
+                }
+                if (is_neighbor_river && final_type == 1) {
+                    if (top_y < SEA_LEVEL) {
+                        final_type = 2;
+                    } else {
+                        final_type = 1;
+                    }
+                }
                 m_blocks[Chunk::get_index(x, top_y, z)] = final_type;
+                // bottom block
                 unsigned fill_type = 2;
                 if (final_type == 1) {
                     fill_type = 2;
@@ -342,6 +372,7 @@ void ChunkGenerator::blend_surface_blocks_borders(
 
 void ChunkGenerator::generate_vegetation() {
     auto m_biome = m_chunk.biome();
+    auto& m_blocks = m_chunk.blocks();
     auto& m_heightmap = m_chunk.heightmap();
     if (m_biome == Biome::FOREST) {
         std::array<int, SIZE_X> x_arr;
@@ -352,9 +383,36 @@ void ChunkGenerator::generate_vegetation() {
         std::shuffle(z_arr.begin(), z_arr.end(), m_random.engine());
         for (auto x : x_arr) {
             for (auto z : z_arr) {
-                if (m_random.random_bool(forest_params().tree_frequency)) {
-                    build_tree(m_chunk,
-                               {x, static_cast<int>(m_heightmap[x][z]), z});
+                int y = static_cast<int>(m_heightmap[x][z]);
+                if (m_random.random_bool(forest_params().tree_frequency) &&
+                    y >= SEA_LEVEL) {
+                    build_tree(m_chunk, {x, y, z});
+                }
+            }
+        }
+    }
+    if (m_biome == Biome::RIVER) {
+        for (int x = 0; x < SIZE_X; x++) {
+            for (int z = 0; z < SIZE_Z; z++) {
+                int height = static_cast<int>(m_heightmap[x][z]);
+                if (height >= SEA_LEVEL) {
+                    continue;
+                }
+                for (int y = height + 1; y < SEA_LEVEL; y++) {
+                    m_blocks[Chunk::get_index(x, y, z)] = 7;
+                }
+            }
+        }
+    }
+    if (is_neighbor_river) {
+        for (int x = 0; x < SIZE_X; x++) {
+            for (int z = 0; z < SIZE_Z; z++) {
+                int height = static_cast<int>(m_heightmap[x][z]);
+                if (height >= SEA_LEVEL) {
+                    continue;
+                }
+                for (int y = height + 1; y < SEA_LEVEL; y++) {
+                    m_blocks[Chunk::get_index(x, y, z)] = 7;
                 }
             }
         }