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Fixed: Flash viewer- cyclic DefineSprite usage

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Jindra Petřík
2021-03-03 18:00:55 +01:00
parent af7f30cd53
commit ec0d890fd2
2 changed files with 32 additions and 0 deletions
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31
libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/timeline/Timeline.java
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@@ -306,6 +306,13 @@ public class Timeline {
if (characterId != -1) {
fl.characterId = characterId;
}
CharacterTag character = swf.getCharacter(characterId);
if (character instanceof DefineSpriteTag) {
Stack<Integer> cyStack = new Stack<>();
if (isCyclic(timelined, cyStack)) {
fl.characterId = -1;
}
}
if (po.flagMove()) {
MATRIX matrix2 = po.getMatrix();
if (matrix2 != null) {
@@ -1215,4 +1222,28 @@ public class Timeline {
return false;
}
private boolean isCyclic(Timelined tim, Stack<Integer> walked) {
for (Tag t : tim.getTags()) {
if (t instanceof PlaceObjectTypeTag) {
PlaceObjectTypeTag p = (PlaceObjectTypeTag) t;
int chid = p.getCharacterId();
if (chid != -1) {
if (walked.contains(chid)) {
return true;
}
CharacterTag character = swf.getCharacter(chid);
if (character instanceof DefineSpriteTag) {
walked.push(chid);
if (isCyclic((DefineSpriteTag) character, walked)) {
walked.pop();
return true;
}
walked.pop();
}
}
}
}
return false;
}
}