1 files changed, 107 insertions, 1 deletions

diff --git a/src/koopatlas/pathmanager.cpp b/src/koopatlas/pathmanager.cpp
index 41515a6..444684c 100644
--- a/src/koopatlas/pathmanager.cpp
+++ b/src/koopatlas/pathmanager.cpp
@@ -61,11 +61,115 @@ void dWMPathManager_c::setup() {
 		}
 	}
 
-	// unlock all needed paths
 	SpammyReport("Unlocking paths\n");
+	isEnteringLevel = false;
+	unlockPaths();
 	SpammyReport("done\n");
 }
 
+static u8 *PathAvailabilityData = 0;
+
+dWMPathManager_c::~dWMPathManager_c() {
+	if (PathAvailabilityData && !isEnteringLevel) {
+		delete[] PathAvailabilityData;
+		PathAvailabilityData = 0;
+	}
+}
+
+void dWMPathManager_c::unlockPaths() {
+	u8 *oldAvData = PathAvailabilityData;
+	PathAvailabilityData = new u8[pathLayer->pathCount];
+
+	// unlock all needed paths
+	for (int i = 0; i < pathLayer->pathCount; i++)
+		PathAvailabilityData[i] = dKPPath_s::NOT_AVAILABLE;
+
+	SaveBlock *save = GetSaveFile()->GetBlock(-1);
+
+	u8 *in = (u8*)dScKoopatlas_c::instance->mapData.data->unlockData;
+
+	while (*in != 0) {
+		// begin processing a block
+		bool value = evaluateUnlockCondition(in, save);
+
+		// , get what it's supposed to affect
+		// for now we'll assume that it affects one or more paths
+		u8 affectedCount = *(in++);
+
+		for (int i = 0; i < affectedCount; i++) {
+			u8 one = *(in++);
+			u8 two = *(in++);
+			u16 pathID = (one << 8) | two;
+
+			dKPPath_s *path = pathLayer->paths[pathID];
+			path->isAvailable = dKPPath_s::AVAILABLE;
+			PathAvailabilityData[pathID] = dKPPath_s::AVAILABLE;
+			// NEWLY_AVAILABLE is set later, when that stuff is figured out
+		}
+
+		// now evaluate a condition. simple!
+	}
+
+	// did anything become newly available?!
+	int whatsNew = 0;
+
+	if (oldAvData) {
+		for (int i = 0; i < pathLayer->pathCount; i++) {
+			if ((PathAvailabilityData[i] > 0) && (oldAvData[i] == 0)) {
+				dKPPath_s *path = pathLayer->paths[i];
+				path->isAvailable = dKPPath_s::NEWLY_AVAILABLE;
+				whatsNew++;
+			}
+		}
+		delete[] oldAvData;
+	}
+
+	// todo: set a flag on Map to do the path fade/sound, with whatsNew
+}
+
+bool dWMPathManager_c::evaluateUnlockCondition(u8 *&in, SaveBlock *save) {
+	u8 controlByte = *(in++);
+
+	u8 conditionType = (controlByte >> 6);
+
+	if (conditionType == 0)
+		return true;
+
+	if (conditionType == 1) {
+		// Simple level
+
+		bool isSecret = (controlByte & 0x10);
+		u8 worldNumber = controlByte & 0xF;
+		u8 levelNumber = *(in++);
+
+		u32 conds = save->GetLevelCondition(worldNumber, levelNumber);
+
+		if (isSecret)
+			return (conds & COND_SECRET) != 0;
+		else
+			return (conds & COND_NORMAL) != 0;
+	}
+
+	// Type: 2 = AND, 3 = OR
+	bool isAnd = (conditionType == 2);
+	bool isOr = (conditionType == 3);
+
+	bool value = isOr ? false : true;
+
+	u8 termCount = (controlByte & 0x3F) + 1;
+
+	for (int i = 0; i < termCount; i++) {
+		bool what = evaluateUnlockCondition(in, save);
+
+		if (isOr)
+			value |= what;
+		else
+			value &= what;
+	}
+
+	return value;
+}
+
 
 void dWMPathManager_c::execute() {
 	int nowPressed = Remocon_GetPressed(GetActiveRemocon());
@@ -354,6 +458,8 @@ void dWMPathManager_c::activatePoint() {
 		MapSoundPlayer(SoundRelatedClass, SE_SYS_GAME_START, 1);
 		daWMPlayer_c::instance->startAnimation(170, 1.2, 10.0, 0.0);
 
+		isEnteringLevel = true;
+
 		dLevelInfo_c::entry_s *level = dScKoopatlas_c::instance->levelInfo.search(w, l);
 		dScKoopatlas_c::instance->startLevel(level);
 	}