diff options
| -rw-r--r-- | engines/sci/engine/kernel32.cpp | 32 |
1 files changed, 17 insertions, 15 deletions
diff --git a/engines/sci/engine/kernel32.cpp b/engines/sci/engine/kernel32.cpp index b42e0c4144..a077f110cf 100644 --- a/engines/sci/engine/kernel32.cpp +++ b/engines/sci/engine/kernel32.cpp @@ -834,22 +834,24 @@ reg_t kIsOnMe(EngineState *s, int argc, reg_t *argv) { // Get the object's plane reg_t planeObject = readSelector(s->_segMan, targetObject, SELECTOR(plane)); - uint16 planeResY = readSelectorValue(s->_segMan, planeObject, SELECTOR(resY)); - uint16 planeResX = readSelectorValue(s->_segMan, planeObject, SELECTOR(resX)); - uint16 planeTop = readSelectorValue(s->_segMan, planeObject, SELECTOR(top)); - uint16 planeLeft = readSelectorValue(s->_segMan, planeObject, SELECTOR(left)); - planeTop = (planeTop * g_sci->_gfxScreen->getHeight()) / planeResY; - planeLeft = (planeLeft * g_sci->_gfxScreen->getWidth()) / planeResX; - - // Adjust the bounding rectangle of the object by the object's actual X, Y coordinates - uint16 itemX = readSelectorValue(s->_segMan, targetObject, SELECTOR(x)); - uint16 itemY = readSelectorValue(s->_segMan, targetObject, SELECTOR(y)); - itemY = ((itemY * g_sci->_gfxScreen->getHeight()) / planeResY); - itemX = ((itemX * g_sci->_gfxScreen->getWidth()) / planeResX); - itemY += planeTop; - itemX += planeLeft; + if (!planeObject.isNull()) { + uint16 itemX = readSelectorValue(s->_segMan, targetObject, SELECTOR(x)); + uint16 itemY = readSelectorValue(s->_segMan, targetObject, SELECTOR(y)); + uint16 planeResY = readSelectorValue(s->_segMan, planeObject, SELECTOR(resY)); + uint16 planeResX = readSelectorValue(s->_segMan, planeObject, SELECTOR(resX)); + uint16 planeTop = readSelectorValue(s->_segMan, planeObject, SELECTOR(top)); + uint16 planeLeft = readSelectorValue(s->_segMan, planeObject, SELECTOR(left)); + planeTop = (planeTop * g_sci->_gfxScreen->getHeight()) / planeResY; + planeLeft = (planeLeft * g_sci->_gfxScreen->getWidth()) / planeResX; + + // Adjust the bounding rectangle of the object by the object's actual X, Y coordinates + itemY = ((itemY * g_sci->_gfxScreen->getHeight()) / planeResY); + itemX = ((itemX * g_sci->_gfxScreen->getWidth()) / planeResX); + itemY += planeTop; + itemX += planeLeft; - nsRect.translate(itemX, itemY); + nsRect.translate(itemX, itemY); + } //warning("kIsOnMe: (%d, %d) on object %04x:%04x, parameter %d", argv[0].toUint16(), argv[1].toUint16(), PRINT_REG(argv[2]), argv[3].toUint16()); |