/// <summary>
/// 获取基础的地形树木（森林）
/// </summary>
/// <param name="random">随机对象</param>
/// <param name="labyrinthStruct">迷宫结构</param>
/// <param name="pixel">迷宫结构中每一个单位的宽度</param>
/// <param name="size">地图的大小</param>
/// <param name="maxHeight">地图最大高度</param>
/// <param name="heightMaps">高度图</param>
/// <param name="heightmapResolution">高度图分辨率</param>
/// <param name="treePrototypes">返回一个树木心结数组</param>
/// <returns></returns>
private static TreeInstance[] GetDefaultTreeainTree_Forest(
System.Random random,
LabyrinthOutputStruct labyrinthStruct,
int pixel,
Vector2 size,
float maxHeight,
float[,] heightMaps,
int heightmapResolution,
out TreePrototype[] treePrototypes
)
{
treePrototypes = new TreePrototype[1];
TreePrototype treePrototype0 = new TreePrototype();
treePrototype0.prefab = Resources.Load <GameObject>("Tree/Tree1");
treePrototype0.bendFactor = 1;
treePrototypes[0] = treePrototype0;
//树木种下的偏差值
int x = labyrinthStruct.labyrinthData.GetLength(0);
int y = labyrinthStruct.labyrinthData.GetLength(1);
List <Vector3> posList = new List <Vector3>();
List <int> wallCounts = new List <int>();
for (int i = 0; i < x; i++)
{
for (int j = 0; j < y; j++)
{
if (labyrinthStruct.labyrinthData[i, j] == LabyrinthPiecemealType.Wall)
{
int setTree = random.Next(0, 10);
if (setTree > 2)
{
continue;
}
int wallCount = 0;
if (i == 0 || labyrinthStruct.labyrinthData[i - 1, j] == LabyrinthPiecemealType.Wall)
{
wallCount++;
}
if (i == x - 1 || labyrinthStruct.labyrinthData[i + 1, j] == LabyrinthPiecemealType.Wall)
{
wallCount++;
}
if (j == 0 || labyrinthStruct.labyrinthData[i, j - 1] == LabyrinthPiecemealType.Wall)
{
wallCount++;
}
if (j == y - 1 || labyrinthStruct.labyrinthData[i, j + 1] == LabyrinthPiecemealType.Wall)
{
wallCount++;
}
wallCounts.Add(wallCount);
float setX = NodiesTools.RandomRange(random.Next(0, 100), -0.5f, 0.5f, 0, 100);
float setY = NodiesTools.RandomRange(random.Next(0, 100), -0.5f, 0.5f, 0, 100);
posList.Add(
new Vector3(
((i + 0.5f + setX) * pixel) / size.x,
heightMaps[(int)((j + 0.5f + setY) / y * heightmapResolution), (int)((i + 0.5f + setX) / x * heightmapResolution)] - 0.1f,
((j + 0.5f + setY) * pixel) / size.y
));
}
}
}
int count = posList.Count;
int treeTypeLength = treePrototypes.Length;
TreeInstance[] results = new TreeInstance[count];
for (int i = 0; i < count; i++)
{
TreeInstance treeInstance = new TreeInstance();
treeInstance.position = posList[i];
float wallCount = wallCounts[i] * 0.1f;
treeInstance.widthScale = (0.2f + NodiesTools.RandomRange(random.Next(0, 100), wallCount / 4, wallCount + 0.01f, 0, 100)) * pixel / 5f;
treeInstance.heightScale = (0.2f + NodiesTools.RandomRange(random.Next(0, 100), wallCount / 4, wallCount + 0.01f, 0, 100)) * pixel / 5f;
treeInstance.rotation = random.Next(0, 360);
treeInstance.prototypeIndex = random.Next(0, treeTypeLength);
treeInstance.color = new Color(1, 1, 1, 1);
treeInstance.lightmapColor = new Color(1, 1, 1, 1);
results[i] = treeInstance;
}
return(results);
}
/// <summary>
/// 获取基础的地形数据
/// 该地形仅仅包含基础的噪波信息
/// </summary>
/// <param name="random">随机对象</param>
/// <param name="labyrinthStruct">迷宫结构</param>
/// <param name="maxHeight">最大高度</param>
/// <param name="heightmapResolution">地图细节</param>
/// <param name="pixel">迷宫结构中每一个单位的宽度</param>
/// <returns></returns>
private static float[,] GetDefaultTerrainHeightMap_Forest(
System.Random random,
LabyrinthOutputStruct labyrinthStruct,
float maxHeight,
int heightmapResolution,
int pixel)
{
float[,] heightMaps = new float[heightmapResolution, heightmapResolution];
for (int i = 0; i < heightmapResolution; i++)
{
for (int j = 0; j < heightmapResolution; j++)
{
heightMaps[i, j] = 0.2f;
}
}
//设置隆起位置
int xCount = labyrinthStruct.x;
int yCount = labyrinthStruct.y;
for (int i = 0; i < xCount; i++)
{
for (int j = 0; j < yCount; j++)
{
if (labyrinthStruct.labyrinthData[i, j] == LabyrinthPiecemealType.Wall)
{
int minX = (heightmapResolution * i) / xCount;
int maxX = (heightmapResolution * (i + 1)) / xCount;
int minY = (heightmapResolution * j) / yCount;
int maxY = (heightmapResolution * (j + 1)) / yCount;
for (int u = minX; u < maxX; u++)
{
for (int v = minY; v < maxY; v++)
{
heightMaps[v, u] += 0.7f;
}
}
}
}
}
//平滑
float[,] heightMaps_0 = (float[, ])heightMaps.Clone();
int l_max = (int)(pixel * 2f);
Func <int, int, float, int> GetMinLength = (_x, _y, t) =>
{
int _length = 1;
ReCheck:
for (int i = _x - _length; i <= _x + _length; i++)
{
if (i >= 0 && i < heightmapResolution)
{
if ((_y - _length >= 0 && heightMaps_0[i, _y - _length] < t) ||
(_y + _length < heightmapResolution && heightMaps_0[i, _y + _length] < t))
{
goto BreakLine;
}
}
}
for (int i = _y - _length; i <= _y + _length; i++)
{
if (i >= 0 && i < heightmapResolution)
{
if ((_x - _length >= 0 && heightMaps_0[_x - _length, i] < t) ||
(_x + _length < heightmapResolution && heightMaps_0[_x + _length, i] < t))
{
goto BreakLine;
}
}
}
_length++;
if (_length < l_max)
{
goto ReCheck;
}
BreakLine:
return(_length);
};
for (int i = 0; i < heightmapResolution; i++)
{
for (int j = 0; j < heightmapResolution; j++)
{
if (heightMaps_0[i, j] > 0.5f)
{
int l_min = GetMinLength(i, j, 0.5f) * 2;
l_min = l_min > l_max ? l_max : l_min;
float l_f = NodiesTools.RandomRange(l_min, 0, 1, 0, l_max);
float l_f_fade = NodiesTools.Fade(l_f);
heightMaps[i, j] = Mathf.Lerp(0.2f, heightMaps_0[i, j], l_f_fade);
}
}
}
//获取噪波数组
float[,] nodies = NodiesTools.TwoDPerlinNodies(
random,
heightmapResolution,
heightmapResolution,
new int[] { pixel, pixel / 2, pixel / 3 },
new int[] { pixel, pixel / 2, pixel / 3 },
new float[] { 0.1f, 0.05f, 0.02f });
//将噪波添加上去
float offset = 10 / maxHeight;
for (int i = 0; i < heightmapResolution; i++)
{
for (int j = 0; j < heightmapResolution; j++)
{
heightMaps[i, j] += nodies[i, j] * offset;
}
}
return(heightMaps);
}