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Split X and Y size in mapgen logic

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This commit is contained in:
Hielke Morsink
2022-06-04 19:56:31 +02:00
parent 1644cb68d3
commit 49c3f49535
3 changed files with 83 additions and 42 deletions
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57
src/openrct2/world/MapGen.cpp
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@@ -98,21 +98,21 @@ static void mapgen_set_height(mapgen_settings* settings);
static float fractal_noise(int32_t x, int32_t y, float frequency, int32_t octaves, float lacunarity, float persistence);
static void mapgen_simplex(mapgen_settings* settings);
static int32_t _heightSize;
static TileCoordsXY _heightSize;
static uint8_t* _height;
static int32_t get_height(int32_t x, int32_t y)
{
if (x >= 0 && y >= 0 && x < _heightSize && y < _heightSize)
return _height[x + y * _heightSize];
if (x >= 0 && y >= 0 && x < _heightSize.x && y < _heightSize.y)
return _height[x + y * _heightSize.x];
return 0;
}
static void set_height(int32_t x, int32_t y, int32_t height)
{
if (x >= 0 && y >= 0 && x < _heightSize && y < _heightSize)
_height[x + y * _heightSize] = height;
if (x >= 0 && y >= 0 && x < _heightSize.x && y < _heightSize.y)
_height[x + y * _heightSize.x] = height;
}
void mapgen_generate_blank(mapgen_settings* settings)
@@ -120,10 +120,10 @@ void mapgen_generate_blank(mapgen_settings* settings)
int32_t x, y;
map_clear_all_elements();
map_init({ settings->mapSize, settings->mapSize });
for (y = 1; y < settings->mapSize - 1; y++)
map_init(settings->mapSize);
for (y = 1; y < settings->mapSize.y - 1; y++)
{
for (x = 1; x < settings->mapSize - 1; x++)
for (x = 1; x < settings->mapSize.x - 1; x++)
{
auto surfaceElement = map_get_surface_element_at(TileCoordsXY{ x, y }.ToCoordsXY());
if (surfaceElement != nullptr)
@@ -141,7 +141,7 @@ void mapgen_generate_blank(mapgen_settings* settings)
void mapgen_generate(mapgen_settings* settings)
{
auto mapSize = settings->mapSize;
const auto& mapSize = settings->mapSize;
auto waterLevel = settings->water_level;
const auto selectedFloor = TerrainSurfaceObject::GetById(settings->floor);
std::string_view floorTexture = selectedFloor != nullptr ? selectedFloor->GetIdentifier() : "";
@@ -184,10 +184,10 @@ void mapgen_generate(mapgen_settings* settings)
map_clear_all_elements();
// Initialise the base map
map_init({ mapSize, mapSize });
for (auto y = 1; y < mapSize - 1; y++)
map_init(mapSize);
for (auto y = 1; y < mapSize.y - 1; y++)
{
for (auto x = 1; x < mapSize - 1; x++)
for (auto x = 1; x < mapSize.x - 1; x++)
{
auto surfaceElement = map_get_surface_element_at(TileCoordsXY{ x, y }.ToCoordsXY());
if (surfaceElement != nullptr)
@@ -201,9 +201,9 @@ void mapgen_generate(mapgen_settings* settings)
}
// Create the temporary height map and initialise
_heightSize = mapSize * 2;
_height = new uint8_t[_heightSize * _heightSize];
std::fill_n(_height, _heightSize * _heightSize, 0x00);
_heightSize = { mapSize.x * 2, mapSize.y * 2 };
_height = new uint8_t[_heightSize.y * _heightSize.x];
std::fill_n(_height, _heightSize.y * _heightSize.x, 0x00);
mapgen_simplex(settings);
mapgen_smooth_height(2 + (util_rand() % 6));
@@ -213,7 +213,7 @@ void mapgen_generate(mapgen_settings* settings)
delete[] _height;
// Set the tile slopes so that there are no cliffs
while (map_smooth(1, 1, mapSize - 1, mapSize - 1))
while (map_smooth(1, 1, mapSize.x - 1, mapSize.y - 1))
{
}
@@ -235,9 +235,9 @@ void mapgen_generate(mapgen_settings* settings)
}
auto beachTextureId = objectManager.GetLoadedObjectEntryIndex(ObjectEntryDescriptor(beachTexture));
for (auto y = 1; y < mapSize - 1; y++)
for (auto y = 1; y < mapSize.y - 1; y++)
{
for (auto x = 1; x < mapSize - 1; x++)
for (auto x = 1; x < mapSize.x - 1; x++)
{
auto surfaceElement = map_get_surface_element_at(TileCoordsXY{ x, y }.ToCoordsXY());
@@ -431,22 +431,22 @@ static void mapgen_set_water_level(int32_t waterLevel)
static void mapgen_smooth_height(int32_t iterations)
{
int32_t i, x, y, xx, yy, avg;
int32_t arraySize = _heightSize * _heightSize * sizeof(uint8_t);
int32_t arraySize = _heightSize.y * _heightSize.x * sizeof(uint8_t);
uint8_t* copyHeight = new uint8_t[arraySize];
for (i = 0; i < iterations; i++)
{
std::memcpy(copyHeight, _height, arraySize);
for (y = 1; y < _heightSize - 1; y++)
for (y = 1; y < _heightSize.y - 1; y++)
{
for (x = 1; x < _heightSize - 1; x++)
for (x = 1; x < _heightSize.x - 1; x++)
{
avg = 0;
for (yy = -1; yy <= 1; yy++)
{
for (xx = -1; xx <= 1; xx++)
{
avg += copyHeight[(y + yy) * _heightSize + (x + xx)];
avg += copyHeight[(y + yy) * _heightSize.x + (x + xx)];
}
}
avg /= 9;
@@ -463,12 +463,11 @@ static void mapgen_smooth_height(int32_t iterations)
*/
static void mapgen_set_height(mapgen_settings* settings)
{
int32_t x, y, heightX, heightY, mapSize;
int32_t x, y, heightX, heightY;
mapSize = _heightSize / 2;
for (y = 1; y < mapSize - 1; y++)
for (y = 1; y < _heightSize.y / 2 - 1; y++)
{
for (x = 1; x < mapSize - 1; x++)
for (x = 1; x < _heightSize.x / 2 - 1; x++)
{
heightX = x * 2;
heightY = y * 2;
@@ -646,16 +645,16 @@ static void mapgen_simplex(mapgen_settings* settings)
{
int32_t x, y;
float freq = settings->simplex_base_freq * (1.0f / _heightSize);
float freq = settings->simplex_base_freq * (1.0f / _heightSize.x);
int32_t octaves = settings->simplex_octaves;
int32_t low = settings->simplex_low;
int32_t high = settings->simplex_high;
noise_rand();
for (y = 0; y < _heightSize; y++)
for (y = 0; y < _heightSize.y; y++)
{
for (x = 0; x < _heightSize; x++)
for (x = 0; x < _heightSize.x; x++)
{
float noiseValue = std::clamp(fractal_noise(x, y, freq, octaves, 2.0f, 0.65f), -1.0f, 1.0f);
float normalisedNoiseValue = (noiseValue + 1.0f) / 2.0f;