diff options
Diffstat (limited to 'engines/sherlock/scalpel/scalpel_people.cpp')
| -rw-r--r-- | engines/sherlock/scalpel/scalpel_people.cpp | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/engines/sherlock/scalpel/scalpel_people.cpp b/engines/sherlock/scalpel/scalpel_people.cpp index db26bb8c0f..53876f8f1c 100644 --- a/engines/sherlock/scalpel/scalpel_people.cpp +++ b/engines/sherlock/scalpel/scalpel_people.cpp @@ -500,6 +500,33 @@ bool ScalpelPeople::loadWalk() { return result; } +const Common::Point ScalpelPeople::restrictToZone(int zoneId, const Common::Point &destPos) { + Scene &scene = *_vm->_scene; + Common::Point walkDest = destPos; + + // The destination isn't in a zone + if (walkDest.x >= (SHERLOCK_SCREEN_WIDTH - 1)) + walkDest.x = SHERLOCK_SCREEN_WIDTH - 2; + + // Trace a line between the centroid of the found closest zone to + // the destination, to find the point at which the zone will be left + const Common::Rect &destRect = scene._zones[zoneId]; + const Common::Point destCenter((destRect.left + destRect.right) / 2, + (destRect.top + destRect.bottom) / 2); + const Common::Point delta = walkDest - destCenter; + Point32 pt(destCenter.x * FIXED_INT_MULTIPLIER, destCenter.y * FIXED_INT_MULTIPLIER); + + // Move along the line until the zone is left + do { + pt += delta; + } while (destRect.contains(pt.x / FIXED_INT_MULTIPLIER, pt.y / FIXED_INT_MULTIPLIER)); + + // Set the new walk destination to the last point that was in the + // zone just before it was left + return Common::Point((pt.x - delta.x * 2) / FIXED_INT_MULTIPLIER, + (pt.y - delta.y * 2) / FIXED_INT_MULTIPLIER); +} + } // End of namespace Scalpel } // End of namespace Sherlock |