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Make sure walk coordinate are valid before checking path buffer.

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svn-id: r48846
This commit is contained in:
Nicola Mettifogo 2010-04-28 22:52:36 +00:00
parent 9001a8fbc3
commit 4cb1fc9e79
1 changed files with 4 additions and 4 deletions
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8
engines/parallaction/walk.cpp
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@ -73,10 +73,10 @@ void PathWalker_NS::correctPathPoint(Common::Point &to) {
int16 left = to.x;
do {
right++;
} while (!IS_PATH_CLEAR(right, to.y) && (right < maxX));
} while ((right < maxX) && !IS_PATH_CLEAR(right, to.y));
do {
left--;
} while (!IS_PATH_CLEAR(left, to.y) && (left > 0));
} while ((left > 0) && !IS_PATH_CLEAR(left, to.y));
right = (right == maxX) ? 1000 : right - to.x;
left = (left == 0) ? 1000 : to.x - left;
@ -85,10 +85,10 @@ void PathWalker_NS::correctPathPoint(Common::Point &to) {
int16 bottom = to.y;
do {
top--;
} while (!IS_PATH_CLEAR(to.x, top) && (top > 0));
} while ((top > 0) && !IS_PATH_CLEAR(to.x, top));
do {
bottom++;
} while (!IS_PATH_CLEAR(to.x, bottom) && (bottom < maxY));
} while ((bottom < maxY) && !IS_PATH_CLEAR(to.x, bottom) );
top = (top == 0) ? 1000 : to.y - top;
bottom = (bottom == maxY) ? 1000 : bottom - to.y;