switching between multiple maps

4 files changed, 153 insertions, 19 deletions

diff --git a/src/koopatlas/core.cpp b/src/koopatlas/core.cpp
index 7eaa339..f7acf00 100644
--- a/src/koopatlas/core.cpp
+++ b/src/koopatlas/core.cpp
@@ -47,7 +47,8 @@ dScKoopatlas_c *dScKoopatlas_c::build() {
 bool WMInit_StartLoading(void*);
 bool WMInit_LoadSIAnims(void*);
 bool WMInit_EndLoading(void*);
-bool WMInit_LoadResources(void*);
+bool WMInit_LoadResources1(void*);
+bool WMInit_LoadResources2(void*);
 bool WMInit_SetupWait(void*);
 bool WMInit_SetupExtra(void*);
 bool WMInit_SetupWipe(void*);
@@ -56,14 +57,15 @@ ChainedFunc initFunctions[] = {
 	WMInit_StartLoading,
 	WMInit_LoadSIAnims,
 	WMInit_EndLoading,
-	WMInit_LoadResources,
+	WMInit_LoadResources1,
+	WMInit_LoadResources2,
 	WMInit_SetupWait,
 	WMInit_SetupExtra,
 	WMInit_SetupWipe
 };
 
 dScKoopatlas_c::dScKoopatlas_c() : state(this) {
-	initChain.setup(initFunctions, 7);
+	initChain.setup(initFunctions, 8);
 
 	setInitChain(initChain);
 }
@@ -154,13 +156,28 @@ bool WMInit_EndLoading(void *ptr) {
 	return true;
 }
 
-bool WMInit_LoadResources(void *ptr) {
-	SpammyReport("WMInit_LoadResources returning true\n");
+bool WMInit_LoadResources1(void *ptr) {
+	SpammyReport("WMInit_LoadResources1 returning true\n");
 
 	dScKoopatlas_c *wm = (dScKoopatlas_c*)ptr;
-	return
-		wm->mapData.load("/Maps/yat.kpbin") &&
-		wm->levelInfoLoader.load("/NewerRes/LevelInfo.bin");
+
+	bool result1 = wm->mapListLoader.load("/Maps/List.txt");
+	bool result2 = wm->levelInfoLoader.load("/NewerRes/LevelInfo.bin");
+	return result1 && result2;
+}
+
+bool WMInit_LoadResources2(void *ptr) {
+	SpammyReport("WMInit_LoadResources2 returning true\n");
+
+	dScKoopatlas_c *wm = (dScKoopatlas_c*)ptr;
+
+	if (wm->mapPath == 0) {
+		wm->mapPath = wm->getMapNameForIndex(wm->currentMapID);
+		if (wm->mapPath == 0)
+			wm->mapPath = wm->getMapNameForIndex(0);
+	}
+
+	return wm->mapData.load(wm->mapPath);
 }
 
 bool WMInit_SetupWait(void *ptr) {
@@ -339,13 +356,12 @@ int dScKoopatlas_c::onCreate() {
 	SpammyReport("setting NewerMapDrawFunc\n");
 	*CurrentDrawFunc = NewerMapDrawFunc;
 
-	// level info
-	/*SpammyReport("loading level info file\n");
-	levelInfoFile.open("/NewerRes/LevelInfo.bin");
-	SpammyReport("preparing level info\n");
-	levelInfo.load(levelInfoFile.ptr());*/
-
 	SpammyReport("onCreate() completed\n");
+	
+	// Prepare this first
+	SaveBlock *save = GetSaveFile()->GetBlock(-1);
+	currentMapID = save->current_world;
+
 	return true;
 }
 
@@ -361,6 +377,7 @@ int dScKoopatlas_c::onDelete() {
 	DVD_FreeFile(GetDVDClass2(), "SI_star");
 
 	levelInfoLoader.unload();
+	mapListLoader.unload();
 
 	return true;
 }
@@ -831,6 +848,74 @@ void dScKoopatlas_c::startLevel(dLevelInfo_c::entry_s *entry) {
 }
 
 
+u32 dScKoopatlas_c::iterateMapList(u32(*callback)(u32,const char *,int,int), u32 userData, int *ptrIndex) {
+	u8 *ptr = (u8*)mapListLoader.buffer;
+	u8 *strStart = ptr;
+	u8 *end = ptr + mapListLoader.size;
+	int index = 0;
+
+	while (true) {
+		u8 chr = *ptr;
+		if (chr == 13) {
+			++ptr;
+			continue;
+		}
+
+		if (chr == 10 || chr == 0 || ptr >= end) {
+			if (strStart == ptr) {
+				// Blank string, ignore
+				++strStart;
+				++ptr;
+				continue;
+			}
+
+			// Change the linefeed to a NUL so we can use the line as a C string later
+			if (ptr < end)
+				*ptr = 0;
+
+			u32 ret = callback(userData, (const char*)strStart, ptr - strStart, index);
+			if (ptrIndex)
+				*ptrIndex = index;
+			if (ret > 0)
+				return ret;
+
+			strStart = ++ptr;
+			++index;
+
+			if (ptr >= end)
+				break;
+
+		} else {
+			++ptr;
+		}
+	}
+
+	return 0;
+}
+
+static u32 _cb_getIndex(u32 userData, const char *str, int size, int index) {
+	if (index == userData)
+		return (u32)str;
+	else
+		return 0;
+}
+
+static u32 _cb_searchName(u32 userData, const char *str, int size, int index) {
+	if (strncmp(str, (const char*)userData, size) == 0)
+		return (u32)(index+1);
+	else
+		return 0;
+}
+
+const char *dScKoopatlas_c::getMapNameForIndex(int index) {
+	return (const char *)iterateMapList(&_cb_getIndex, (u32)index, 0);
+}
+
+int dScKoopatlas_c::getIndexForMapName(const char *name) {
+	return ((int)iterateMapList(&_cb_searchName, (u32)name, 0)) - 1;
+}
+
+
 void NewerMapDrawFunc() {
 	Reset3DState();
 	SetCurrentCameraID(0);
diff --git a/src/koopatlas/core.h b/src/koopatlas/core.h
index 9ca1935..6a76cc4 100644
--- a/src/koopatlas/core.h
+++ b/src/koopatlas/core.h
@@ -92,9 +92,17 @@ class dScKoopatlas_c : public dScene_c {
 		dWMHud_c *hud;
 		dWMMap_c *map;
 
+		int currentMapID;
+		const char *mapPath;
 		dKPMapData_c mapData;
 		dWMPathManager_c pathManager;
 
+		dDvdLoader_c mapListLoader;
+
+		u32 iterateMapList(u32(*callback)(u32,const char *,int,int), u32 userData, int *ptrIndex = 0);
+		const char *getMapNameForIndex(int index);
+		int getIndexForMapName(const char *name);
+
 		dDvdLoader_c levelInfoLoader;
 		dLevelInfo_c levelInfo;
 
diff --git a/src/koopatlas/mapdata.h b/src/koopatlas/mapdata.h
index e75925d..913c933 100644
--- a/src/koopatlas/mapdata.h
+++ b/src/koopatlas/mapdata.h
@@ -67,10 +67,17 @@ struct dKPNode_s {
 	NodeTypes type;
 	union {
 		struct { u8 levelNumber[2]; };
-		struct { char *destMap; u8 thisID, foreignID, transition; };
+		struct { const char *destMap; u8 thisID, foreignID, transition; };
 	};
 
 
+	dKPPath_s *getAnyExit() {
+		for (int i = 0; i < 4; i++)
+			if (exits[i])
+				return exits[i];
+		return 0;
+	}
+
 	dKPPath_s *getOppositeExitTo(dKPPath_s *path);
 };
 
diff --git a/src/koopatlas/pathmanager.cpp b/src/koopatlas/pathmanager.cpp
index 609b3a2..923d08c 100644
--- a/src/koopatlas/pathmanager.cpp
+++ b/src/koopatlas/pathmanager.cpp
@@ -11,10 +11,35 @@ void dWMPathManager_c::setup() {
 	pathLayer = dScKoopatlas_c::instance->mapData.pathLayer;
 
 	SaveBlock *save = GetSaveFile()->GetBlock(-1);
-	if (save->current_path_node >= pathLayer->nodeCount) {
-		currentNode = pathLayer->nodes[0];
+
+	// Figure out what path node to start at
+	if (dScKoopatlas_c::instance->settings & 0x10000000) {
+		// Start off from a "Change"
+		u8 changeID = dScKoopatlas_c::instance->settings & 0xFF;
+
+		bool found = false;
+
+		for (int i = 0; i < pathLayer->nodeCount; i++) {
+			dKPNode_s *node = pathLayer->nodes[i];
+
+			if (node->type == dKPNode_s::CHANGE && node->thisID == changeID) {
+				found = true;
+				currentNode = node;
+
+				startMovementTo(node->getAnyExit());
+			}
+		}
+
+		if (!found) {
+			OSReport("Couldn't find target node %d!\n", changeID);
+		}
+		
 	} else {
-		currentNode = pathLayer->nodes[save->current_path_node];
+		if (save->current_path_node >= pathLayer->nodeCount) {
+			currentNode = pathLayer->nodes[0];
+		} else {
+			currentNode = pathLayer->nodes[save->current_path_node];
+		}
 	}
 
 	// unlock all needed paths
@@ -100,7 +125,16 @@ void dWMPathManager_c::moveThroughPath() {
    		player->pos.x = to->x;
    		player->pos.y = -to->y;
 
-	   	if (to->type != dKPNode_s::PASS_THROUGH) {
+		if (to->type == dKPNode_s::CHANGE) {
+			// Go to another map
+			isMoving = false;
+
+			SaveBlock *save = GetSaveFile()->GetBlock(-1);
+			save->current_world = dScKoopatlas_c::instance->getIndexForMapName(to->destMap);
+
+			DoSceneChange(WORLD_MAP, 0x10000000 | to->foreignID, 0);
+
+		} else if (to->type != dKPNode_s::PASS_THROUGH) {
 	   		// Stop here
 	   		player->startAnimation(0, 1.2, 10.0, 0.0);