From 4562557d599fd70d32b15313ffebd976c3ddfa7d Mon Sep 17 00:00:00 2001 From: Dan Goodliffe Date: Sun, 14 Feb 2021 16:44:00 +0000 Subject: Maintain a history of links traversed --- game/vehicles/vehicle.cpp | 30 +++++++++++++++++++++++++++++- 1 file changed, 29 insertions(+), 1 deletion(-) (limited to 'game/vehicles/vehicle.cpp') diff --git a/game/vehicles/vehicle.cpp b/game/vehicles/vehicle.cpp index c12181f..569063d 100644 --- a/game/vehicles/vehicle.cpp +++ b/game/vehicles/vehicle.cpp @@ -5,6 +5,34 @@ #include Vehicle::Vehicle(const LinkPtr & l, const std::string & obj, const std::string & tex) : - Physical(l->ends.front().first->pos, obj, tex), link(l) + Physical(l->ends.front().first->pos, obj, tex) { + linkHist.add(l, 0); +} + +LinkHistory::Return +LinkHistory::add(const LinkWPtr & l, unsigned char d) +{ + links.insert(links.begin(), {l, d}); + const auto lp = l.lock(); + totalLen += lp->length; + while (totalLen >= 1000.F && !links.empty()) { + totalLen -= links.back().first.lock()->length; + links.pop_back(); + } + return {lp, d}; +} + +LinkHistory::Return +LinkHistory::getAt(float len) const +{ + auto litr = links.begin(); + while (len > 0.F && litr != links.end()) { + len -= litr->first.lock()->length; + litr++; + } + if (litr == links.end()) { + litr--; + } + return {litr->first.lock(), litr->second}; } -- cgit v1.2.3