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Correctly handle the case where a surface (or wall) with things on it is removed and replaced with another surface (wall).

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git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@3659 542714f4-19e9-0310-aa3c-eee0fc999fb1
This commit is contained in:
Andrzej Kapolka
2005-07-21 23:50:20 +00:00
parent 301c1cbe4d
commit 694b7f0f98
1 changed files with 87 additions and 83 deletions
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src/java/com/threerings/stage/util/PlacementConstraints.java
+87 -83
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@@ -209,6 +209,93 @@ public class PlacementConstraints
return null;
}
/**
* Determines whether the specified surface has anything on it that won't
* be held up if the surface is removed.
*/
protected boolean hasOnSurface (ObjectData data, ObjectData[] added,
ObjectData[] removed)
{
ArrayList objects = getObjectData(data.bounds, added, removed);
for (int i = 0, size = objects.size(); i < size; i++) {
ObjectData odata = (ObjectData)objects.get(i);
if (odata.tile.hasConstraint(ObjectTileSet.ON_SURFACE) &&
!isOnSurface(odata, added, removed)) {
return true;
}
}
return false;
}
/**
* Determines whether the specified wall has anything on it that won't be
* held up if the wall is removed.
*/
protected boolean hasOnWall (ObjectData data, ObjectData[] added,
ObjectData[] removed, int dir)
{
ArrayList objects = getObjectData(data.bounds, added, removed);
for (int i = 0, size = objects.size(); i < size; i++) {
ObjectData odata = (ObjectData)objects.get(i);
if (getConstraintDirection(odata, ObjectTileSet.ON_WALL) == dir &&
!isOnWall(odata, added, removed, dir)) {
return true;
}
}
return false;
}
/**
* Determines whether the specified wall has anything attached to it that
* won't be held up if the wall is removed.
*/
protected boolean hasAttached (ObjectData data, ObjectData[] added,
ObjectData[] removed, int dir)
{
ArrayList objects = getObjectData(getAdjacentEdge(data.bounds,
DirectionUtil.getOpposite(dir)), added, removed);
for (int i = 0, size = objects.size(); i < size; i++) {
ObjectData odata = (ObjectData)objects.get(i);
if (getConstraintDirection(odata, ObjectTileSet.ATTACH) == dir &&
!isAttached(odata, added, removed, dir)) {
return true;
}
}
return false;
}
/**
* Verifies that the objects adjacent to the given object will still have
* their space constraints met if the object is added.
*/
protected boolean hasSpaceConstrainedAdjacent (ObjectData data,
ObjectData[] added, ObjectData[] removed)
{
Rectangle rect = new Rectangle(data.bounds);
rect.grow(1, 1);
ArrayList objects = getObjectData(rect, added, removed);
for (int i = 0, size = objects.size(); i < size; i++) {
ObjectData odata = (ObjectData)objects.get(i);
int dir = getConstraintDirection(odata, ObjectTileSet.SPACE);
if (dir != NONE && !hasSpace(odata, added, removed, dir)) {
return true;
}
}
return false;
}
/**
* Determines whether the specified object has empty space in the specified
* direction.
*/
protected boolean hasSpace (ObjectData data, ObjectData[] added,
ObjectData[] removed, int dir)
{
return getObjectData(getAdjacentEdge(data.bounds, dir), added,
removed).size() == 0;
}
/**
* Determines whether the specified object is on a surface.
*/
@@ -268,41 +355,6 @@ public class PlacementConstraints
return true;
}
/**
* Verifies that the objects adjacent to the given object will still have
* their space constraints met if the object is added.
*/
protected boolean hasSpaceConstrainedAdjacent (ObjectData data,
ObjectData[] added, ObjectData[] removed)
{
return hasSpaceConstrainedAdjacent(data, added, removed, NORTH) ||
hasSpaceConstrainedAdjacent(data, added, removed, EAST) ||
hasSpaceConstrainedAdjacent(data, added, removed, SOUTH) ||
hasSpaceConstrainedAdjacent(data, added, removed, WEST);
}
/**
* Checks space constraints for objects in the specified direction.
*/
protected boolean hasSpaceConstrainedAdjacent (ObjectData data,
ObjectData[] added, ObjectData[] removed, int dir)
{
int oppDir = DirectionUtil.getOpposite(dir);
return hasConstrained(getAdjacentEdge(data.bounds, dir), added,
removed, getDirectionalConstraint(ObjectTileSet.SPACE, oppDir));
}
/**
* Determines whether the specified object has empty space in the specified
* direction.
*/
protected boolean hasSpace (ObjectData data, ObjectData[] added,
ObjectData[] removed, int dir)
{
return getObjectData(getAdjacentEdge(data.bounds, dir), added,
removed).size() == 0;
}
/**
* Creates and returns a rectangle that covers the specified rectangle's
* adjacent edge (the squares one tile beyond the bounds) in the specified
@@ -330,54 +382,6 @@ public class PlacementConstraints
}
}
/**
* Determines whether the specified surface has anything on it.
*/
protected boolean hasOnSurface (ObjectData data, ObjectData[] added,
ObjectData[] removed)
{
return hasConstrained(data.bounds, added, removed,
ObjectTileSet.ON_SURFACE);
}
/**
* Determines whether the specified wall has anything on it.
*/
protected boolean hasOnWall (ObjectData data, ObjectData[] added,
ObjectData[] removed, int dir)
{
return hasConstrained(data.bounds, added, removed,
getDirectionalConstraint(ObjectTileSet.ON_WALL, dir));
}
/**
* Determines whether the specified wall has anything attached to it.
*/
protected boolean hasAttached (ObjectData data, ObjectData[] added,
ObjectData[] removed, int dir)
{
int oppDir = DirectionUtil.getOpposite(dir);
return hasConstrained(getAdjacentEdge(data.bounds, oppDir), added,
removed, getDirectionalConstraint(ObjectTileSet.ATTACH, dir));
}
/**
* Determines whether the given rectangle overlaps any objects with the
* given constraint.
*/
protected boolean hasConstrained (Rectangle rect, ObjectData[] added,
ObjectData[] removed, String constraint)
{
ArrayList objects = getObjectData(rect, added, removed);
for (int i = 0, size = objects.size(); i < size; i++) {
ObjectData data = (ObjectData)objects.get(i);
if (data.tile.hasConstraint(constraint)) {
return true;
}
}
return false;
}
/**
* Returns the direction in which the specified object is constrained by
* appending "[NESW]" to the given constraint prefix. Returns