static public RaycastTileResult RaycastTile(World.CubeWorld world, Vector3 from, Vector3 fwd, float maxDistance, bool ignoreNonSolid, bool ignoreNonClickable)
{
Vector3 pos = from;
RaycastTileResult result = new RaycastTileResult();
TileManager tileManager = world.tileManager;
while (true)
{
Vector3 near = pos;
//Find near planes
for (int d = 0; d < 3; d++)
{
near[d] = (float) Math.Round(near[d] / Graphics.TILE_SIZE) * Graphics.TILE_SIZE;
near[d] += Graphics.HALF_TILE_SIZE * Math.Sign(fwd[d]);
}
//Calculate nearest plane
float[] ns = new float[3];
for (int d = 0; d < 3; d++)
{
if (fwd[d] != 0.0f)
ns[d] = (near[d] - pos[d]) / fwd[d];
else
ns[d] = 1.0f;
}
float minN = ns[0];
int lockedAxis = 0;
for (int d = 1; d < 3; d++)
{
if (ns[d] < minN)
{
minN = ns[d];
lockedAxis = d;
}
}
//Advance until the border of the nearest plane
pos += fwd * minN;
if ((pos - from).magnitude >= maxDistance)
break;
//See what tile is there
Vector3 d2 = new Vector3();
d2[lockedAxis] = Math.Sign(fwd[lockedAxis]) * Graphics.QUART_TILE_SIZE;
TilePosition cursorPosition = Graphics.Vector3ToTilePosition(pos + d2);
//Advance a little to stop the next loop from selecting the same tile / border
pos += fwd * Graphics.TILE_SIZE * 0.0001f;
//Now validate what to do :-)
if (tileManager.IsValidTile(cursorPosition))
{
byte tileType = tileManager.GetTileType(cursorPosition);
if (tileType != TileDefinition.EMPTY_TILE_TYPE &&
((ignoreNonSolid == false || tileManager.GetTileSolid(cursorPosition) == true) ||
(ignoreNonClickable == false &&
tileManager.GetTileDefinition(tileType).GetRulesForAction(TileActionRule.ActionType.CLICKED) != null)))
{
switch (lockedAxis)
{
case 0:
if (Math.Sign(fwd[lockedAxis]) > 0)
result.face = Faces.Left;
else
result.face = Faces.Right;
break;
case 1:
if (Math.Sign(fwd[lockedAxis]) > 0)
result.face = Faces.Bottom;
else
result.face = Faces.Top;
break;
case 2:
if (Math.Sign(fwd[lockedAxis]) > 0)
result.face = Faces.Front;
else
result.face = Faces.Back;
break;
}
result.position = cursorPosition;
result.hit = true;
result.tile = tileManager.GetTile(cursorPosition);
break;
}
}
}
return result;
}
static public RaycastTileResult RaycastTile(World.CubeWorld world, Vector3 from, Vector3 fwd, float maxDistance, bool ignoreNonSolid, bool ignoreNonClickable)
{
Vector3 pos = from;
RaycastTileResult result = new RaycastTileResult();
TileManager tileManager = world.tileManager;
while (true)
{
Vector3 near = pos;
//Find near planes
for (int d = 0; d < 3; d++)
{
near[d] = (float)Math.Round(near[d] / Graphics.TILE_SIZE) * Graphics.TILE_SIZE;
near[d] += Graphics.HALF_TILE_SIZE * Math.Sign(fwd[d]);
}
//Calculate nearest plane
float[] ns = new float[3];
for (int d = 0; d < 3; d++)
{
if (fwd[d] != 0.0f)
{
ns[d] = (near[d] - pos[d]) / fwd[d];
}
else
{
ns[d] = 1.0f;
}
}
float minN = ns[0];
int lockedAxis = 0;
for (int d = 1; d < 3; d++)
{
if (ns[d] < minN)
{
minN = ns[d];
lockedAxis = d;
}
}
//Advance until the border of the nearest plane
pos += fwd * minN;
if ((pos - from).magnitude >= maxDistance)
{
break;
}
//See what tile is there
Vector3 d2 = new Vector3();
d2[lockedAxis] = Math.Sign(fwd[lockedAxis]) * Graphics.QUART_TILE_SIZE;
TilePosition cursorPosition = Graphics.Vector3ToTilePosition(pos + d2);
//Advance a little to stop the next loop from selecting the same tile / border
pos += fwd * Graphics.TILE_SIZE * 0.0001f;
//Now validate what to do :-)
if (tileManager.IsValidTile(cursorPosition))
{
byte tileType = tileManager.GetTileType(cursorPosition);
if (tileType != TileDefinition.EMPTY_TILE_TYPE &&
((ignoreNonSolid == false || tileManager.GetTileSolid(cursorPosition) == true) ||
(ignoreNonClickable == false &&
tileManager.GetTileDefinition(tileType).GetRulesForAction(TileActionRule.ActionType.CLICKED) != null)))
{
switch (lockedAxis)
{
case 0:
if (Math.Sign(fwd[lockedAxis]) > 0)
{
result.face = Faces.Left;
}
else
{
result.face = Faces.Right;
}
break;
case 1:
if (Math.Sign(fwd[lockedAxis]) > 0)
{
result.face = Faces.Bottom;
}
else
{
result.face = Faces.Top;
}
break;
case 2:
if (Math.Sign(fwd[lockedAxis]) > 0)
{
result.face = Faces.Front;
}
else
{
result.face = Faces.Back;
}
break;
}
result.position = cursorPosition;
result.hit = true;
result.tile = tileManager.GetTile(cursorPosition);
break;
}
}
}
return(result);
}
