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feat: add river biome (#4)

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* feat: add river biome

* fix: duplicate mountain terrain generation

* fix: safe_int_to_biome not include river
This commit is contained in:
zhenyan121
2026-05-01 19:18:46 +08:00
committed by GitHub
parent d4d761b2aa
commit a63dfa7f47
14 changed files with 127 additions and 23 deletions
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19
src/gameplay/biome.cpp
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@@ -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