void Rails::setupRouteNode(int *routeIndexP, int nodeIndex, int flags, int routeLength) {
WalkNode ¤tNode = _nodes[nodeIndex];
currentNode._active = true;
*routeIndexP++ = nodeIndex;
// Get the index of the ultimate source position (the player)
int subIndex = _nodes.size() - 2;
int distanceVal = _nodes[nodeIndex]._distances[subIndex];
if (distanceVal & flags) {
routeLength += distanceVal & 0x3FFF;
if (routeLength < _routeLength) {
// Found a new shorter route to destination, so set up the route with the found one
_routeIndexes.clear();
for (int i = 0; routeIndexP != &_tempRoute[i]; ++i)
_routeIndexes.push(_tempRoute[i]);
_routeLength = routeLength;
}
} else {
for (int idx = _nodes.size() - 2; idx > 0; --idx) {
int nodePos = idx - 1;
if (!_nodes[nodePos]._active && ((currentNode._distances[nodePos] & flags) != 0))
setupRouteNode(routeIndexP, nodePos, 0x8000, routeLength + (distanceVal & 0x3fff));
}
}
currentNode._active = false;
}
void MadsPlayer::setupRouteNode(int *routeIndexP, int nodeIndex, int flags, int routeLength) {
SceneNodeList &nodes = _madsVm->scene()->getSceneResources()._nodes;
SceneNode ¤tNode = nodes[nodeIndex];
currentNode.active = true;
*routeIndexP++ = nodeIndex;
int subIndex = nodes.size() - 2;
int indexVal = nodes[nodeIndex].indexes[subIndex];
if (indexVal & flags) {
routeLength += indexVal & 0x3FFF;
if (routeLength < _routeLength) {
// Found a new shorter route to destination, so set up the route with the found one
Common::copy(_tempRoute, routeIndexP, _routeIndexes);
_routeCount = routeIndexP - _tempRoute;
_routeLength = indexVal & 0x3FFF;
}
} else {
for (int idx = nodes.size() - 2; idx > 0; --idx) {
int nodePos = idx - 1;
if (!nodes[nodePos].active && ((currentNode.indexes[nodePos] & flags) != 0))
setupRouteNode(routeIndexP, nodePos, 0x8000, indexVal & 0x3fff);
}
}
currentNode.active = false;
}
void Rails::setupRoute(bool bitFlag, const Common::Point &srcPos, const Common::Point &destPos) {
// Reset the nodes in as being inactive
for (uint i = 0; i < _nodes.size(); ++i)
_nodes[i]._active = false;
// Set the two extra walk nodes to the start and destination positions
setNodePosition(_nodes.size() - 2, srcPos);
setNodePosition(_nodes.size() - 1, destPos);
// Start constructing route node list
_routeLength = 0x3FFF;
_routeIndexes.clear();
// Recursively form a route from the destination walk node back to the player's position
setupRouteNode(&_tempRoute[0], _nodes.size() - 1, bitFlag ? 0xC000 : 0x8000, 0);
_next = 0;
if (_routeIndexes.size() > 0) {
Common::Point currPos = srcPos;
for (int routeCtr = size() - 1; (routeCtr >= 0) && !_next; --routeCtr) {
int idx = _routeIndexes[routeCtr];
const Common::Point &pt = _nodes[idx]._walkPos;
_next = scanPath(currPos, pt);
currPos = pt;
}
}
}
void MadsPlayer::setupRoute(bool bitFlag) {
// Reset the flag set of nodes in use
SceneNodeList &nodes = _madsVm->scene()->getSceneResources()._nodes;
for (uint i = 0; i < nodes.size(); ++i)
nodes[i].active = false;
// Start constructing route node list
_routeLength = 0x3FFF;
_routeCount = 0;
setupRouteNode(_tempRoute, nodes.size() - 1, bitFlag ? 0xC000 : 0x8000, 0);
}
