public void Grid(float tileSize, byte maxValue, GridObject<byte> paint, GridObject<byte> canvas)
{
if (paint == null || canvas == null)
return;
float dx = Math.Abs(normal.X);
float dy = Math.Abs(normal.Y);
int x = (int)(point.X / tileSize);
int y = (int)(point.Y / tileSize);
float error = dx - dy;
int x_inc = (normal.X > 0) ? 1 : -1;
int y_inc = (normal.Y > 0) ? 1 : -1;
dx *= 2;
dy *= 2;
float distance = 0;
byte value = 0;
while(true)
{
value = Math.Max(value, paint.Get(x, y, maxValue));
canvas.Set(x, y, value);
if (value >= maxValue)
{
return;
}
if (error > 0)
{
x += x_inc;
error -= dy;
distance += dy * tileSize;
}
else
{
y += y_inc;
error += dx;
distance += dx * tileSize;
}
}
}
public bool TryFindPath(Vector2 v1, Vector2 v2, float raduis, GridObject<float> weightMap, out List<Vector2> path)
{
for (int i = 0; i < _width; i++)
for (int j = 0; j < _height; j++)
_visitedMap[i, j] = false;
int startX = (int)(v1.X / _tileSize);
int startY = (int)(v1.Y / _tileSize);
int goalX = (int)(v2.X / _tileSize);
int goalY = (int)(v2.Y / _tileSize);
//int tileSize = (int)((raduis * 2 - 1) / _tileSize) + 1;
float r = raduis / _tileSize;
//int d = (int)((raduis * 2 * TwoSqrt - 1) / _tileSize) + 1;
bool success = false;
path = null;
if (startX < 0 || startY < 0
|| startX >= _width || startY >= _height
|| goalX < 0 || goalY < 0
|| goalX >= _width || goalY >= _height
|| _heightMap.Get(startX, startY, 0) != 0 || _heightMap.Get(goalX, goalY, 0) != 0)
{
return false;
}
List<GridNode> inList = new List<GridNode>();
inList.Add(new GridNode(-1, startX, startY, 0, GridNode.EstimateDistanceTo(startX, startY, goalX, goalY)));
List<GridNode> outList = new List<GridNode>();
_visitedMap[startX, startY] = true;
float offset = 0.5f * ((int)(r * 2 + 1) % 2);
while (inList.Count > 0 && !success)
{
float distance = float.MaxValue;
int current = -1;
for (int i = 0; i < inList.Count; i++)
{
if (distance > inList[i].GetDistance())
{
current = i;
distance = inList[i].GetDistance();
}
}
GridNode n = inList[current];
if (n.x == goalX && n.y == goalY)
success = true;
if (!success)
{
for (int i = -1; i < 2; i++)
{
for (int j = -1; j < 2; j++)
{
if (i + n.x >= 0 && i + n.x < _width && j + n.y >= 0 && j + n.y < _height)
{
if (_canFit(i + n.x + offset, j + n.y + offset, r))
{
bool diagonal = Math.Abs(i - j) != 1;
if (!diagonal ||
_canFit(i * 0.5f + n.x + offset, j * 0.5f + n.y + offset, r))
{
var tmpNode = new GridNode(outList.Count, i + n.x, j + n.y,
n.steps + (diagonal ? TwoSqrt : 1) * weightMap.Get(i + n.x, j + n.y, 1),
GridNode.EstimateDistanceTo(i + n.x, j + n.y, goalX, goalY));
if (!_visitedMap[i + n.x, j + n.y])
{
inList.Add(tmpNode);
_visitedMap[i + n.x, j + n.y] = true;
}
else
{
for (int k = 0; k < inList.Count; k++)
{
if (inList[k].x == i + n.x && inList[k].y == j + n.y)
{
if (inList[k].steps > tmpNode.steps)
inList[k] = tmpNode;
break;
}
}
}
}
}
}
}
}
}
inList.RemoveAt(current);
outList.Add(n);
}
if (!success)
return false;
GridNode node = outList.Last();
path = new List<Vector2>();
path.Add(new Vector2((node.x + offset) * _tileSize, (node.y + offset) * _tileSize));
while (node.parent != -1)
{
node = outList[node.parent];
path.Add(new Vector2((node.x + offset) * _tileSize, (node.y + offset) * _tileSize));
}
path.Reverse();
return true;
}
public void DrawHeightGrid(GridObject<byte> grid, Color min, Color max)
{
var cm = Atlas.GetManager<CameraManager>();
var t = Atlas.Content.GetContent<Texture2D>("blop");
var rec = new Rectangle(0, 0, _tileSize, _tileSize);
for (int i = Math.Max(0, (int)((cm.Position.X - cm.Width * 0.6f) / _tileSize));
i < Math.Min(_width, (int)((cm.Position.X + cm.Width * 0.6f) / _tileSize));
i++)
{
for (int j = Math.Max(0, (int)((cm.Position.Y - cm.Height * 0.6f) / _tileSize));
j < Math.Min(_height, (int)((cm.Position.Y + cm.Height * 0.6f) / _tileSize));
j++)
{
Atlas.Graphics.DrawSprite(t,
new Vector2(i * _tileSize, j * _tileSize), rec,
Color.Lerp(min, max,
grid.Get(i, j, MAX_HEIGHT) / ((MAX_HEIGHT + 1) * 1f)));
}
}
}
