Implement ModelDb (WDB reader/parser) (#619)

* WIP Read WDB

* Fixes

* WIP

* WIP

* WIP

* WIP

* Match

* Match

* Fix Compare

* Rename member

LEGO1/modeldb/modeldb.cpp

@@ -0,0 +1,83 @@
+#include "modeldb.h"
+
+DECOMP_SIZE_ASSERT(ModelDbWorld, 0x18)
+DECOMP_SIZE_ASSERT(ModelDbPart, 0x18)
+DECOMP_SIZE_ASSERT(ModelDbModel, 0x38)
+DECOMP_SIZE_ASSERT(ModelDbPartList, 0x1c)
+DECOMP_SIZE_ASSERT(ModelDbPartListCursor, 0x10)
+
+// STUB: LEGO1 0x100276b0
+MxResult ModelDbModel::Read(FILE* p_file)
+{
+	return SUCCESS;
+}
+
+// STUB: LEGO1 0x10027850
+MxResult ModelDbPart::Read(FILE* p_file)
+{
+	return SUCCESS;
+}
+
+// FUNCTION: LEGO1 0x10027910
+MxResult ReadModelDbWorlds(FILE* p_file, ModelDbWorld*& p_worlds, MxS32& p_numWorlds)
+{
+	p_worlds = NULL;
+	p_numWorlds = 0;
+
+	MxS32 numWorlds;
+	if (fread(&numWorlds, sizeof(numWorlds), 1, p_file) != 1) {
+		return FAILURE;
+	}
+
+	ModelDbWorld* worlds = new ModelDbWorld[numWorlds];
+	MxS32 worldNameLen, numParts, i, j;
+
+	for (i = 0; i < numWorlds; i++) {
+		if (fread(&worldNameLen, sizeof(worldNameLen), 1, p_file) != 1) {
+			return FAILURE;
+		}
+
+		worlds[i].m_worldName = new char[worldNameLen];
+		if (fread(worlds[i].m_worldName, worldNameLen, 1, p_file) != 1) {
+			return FAILURE;
+		}
+
+		if (fread(&numParts, sizeof(numParts), 1, p_file) != 1) {
+			return FAILURE;
+		}
+
+		worlds[i].m_partList = new ModelDbPartList();
+
+		for (j = 0; j < numParts; j++) {
+			ModelDbPart* part = new ModelDbPart();
+
+			if (part->Read(p_file) != SUCCESS) {
+				return FAILURE;
+			}
+
+			worlds[i].m_partList->Append(part);
+		}
+
+		if (fread(&worlds[i].m_numModels, sizeof(worlds[i].m_numModels), 1, p_file) != 1) {
+			return FAILURE;
+		}
+
+		worlds[i].m_models = new ModelDbModel[worlds[i].m_numModels];
+
+		for (j = 0; j < worlds[i].m_numModels; j++) {
+			if (worlds[i].m_models[j].Read(p_file) != SUCCESS) {
+				return FAILURE;
+			}
+		}
+	}
+
+	p_worlds = worlds;
+	p_numWorlds = numWorlds;
+	return SUCCESS;
+}
+
+// STUB: LEGO1 0x10028080
+void FreeModelDbWorlds(ModelDbWorld*& p_worlds, MxS32 p_numWorlds)
+{
+	// TODO
+}