295 lines
11 KiB
Go
295 lines
11 KiB
Go
package d2ds1
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import (
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"github.com/OpenDiablo2/OpenDiablo2/d2common"
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"github.com/OpenDiablo2/OpenDiablo2/d2common/d2data"
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"github.com/OpenDiablo2/OpenDiablo2/d2common/d2enum"
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)
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const maxActNumber = 5
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// DS1 represents the "stamp" data that is used to build up maps.
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type DS1 struct {
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Files []string // FilePtr table of file string pointers
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Objects []d2data.Object // Objects
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Tiles [][]TileRecord // The tile data for the DS1
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SubstitutionGroups []SubstitutionGroup // Substitution groups for the DS1
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Version int32 // The version of the DS1
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Width int32 // Width of map, in # of tiles
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Height int32 // Height of map, in # of tiles
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Act int32 // Act, from 1 to 5. This tells which act table to use for the Objects list
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SubstitutionType int32 // SubstitutionType (layer type): 0 if no layer, else type 1 or type 2
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NumberOfWalls int32 // WallNum number of wall & orientation layers used
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NumberOfFloors int32 // number of floor layers used
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NumberOfShadowLayers int32 // ShadowNum number of shadow layer used
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NumberOfSubstitutionLayers int32 // SubstitutionNum number of substitution layer used
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SubstitutionGroupsNum int32 // SubstitutionGroupsNum number of substitution groups, datas between objects & NPC paths
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}
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// LoadDS1 loads the specified DS1 file
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func LoadDS1(fileData []byte) (*DS1, error) {
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ds1 := &DS1{
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Act: 1,
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NumberOfFloors: 0,
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NumberOfWalls: 0,
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NumberOfShadowLayers: 1,
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NumberOfSubstitutionLayers: 0,
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}
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br := d2common.CreateStreamReader(fileData)
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ds1.Version = br.GetInt32()
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ds1.Width = br.GetInt32() + 1
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ds1.Height = br.GetInt32() + 1
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if ds1.Version >= 8 { //nolint:gomnd // Version number
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ds1.Act = d2common.MinInt32(maxActNumber, br.GetInt32()+1)
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}
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if ds1.Version >= 10 { //nolint:gomnd // Version number
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ds1.SubstitutionType = br.GetInt32()
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if ds1.SubstitutionType == 1 || ds1.SubstitutionType == 2 {
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ds1.NumberOfSubstitutionLayers = 1
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}
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}
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if ds1.Version >= 3 { //nolint:gomnd // Version number
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// These files reference things that don't exist anymore :-?
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numberOfFiles := br.GetInt32()
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ds1.Files = make([]string, numberOfFiles)
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for i := 0; i < int(numberOfFiles); i++ {
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ds1.Files[i] = ""
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for {
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ch := br.GetByte()
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if ch == 0 {
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break
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}
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ds1.Files[i] += string(ch)
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}
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}
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}
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if ds1.Version >= 9 && ds1.Version <= 13 {
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// Skipping two dwords because they are "meaningless"?
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br.SkipBytes(8) //nolint:gomnd // We don't know what's here
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}
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if ds1.Version >= 4 { //nolint:gomnd // Version number
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ds1.NumberOfWalls = br.GetInt32()
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if ds1.Version >= 16 { //nolint:gomnd // Version number
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ds1.NumberOfFloors = br.GetInt32()
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} else {
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ds1.NumberOfFloors = 1
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}
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}
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layerStream := ds1.setupStreamLayerTypes()
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ds1.Tiles = make([][]TileRecord, ds1.Height)
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for y := range ds1.Tiles {
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ds1.Tiles[y] = make([]TileRecord, ds1.Width)
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for x := 0; x < int(ds1.Width); x++ {
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ds1.Tiles[y][x].Walls = make([]WallRecord, ds1.NumberOfWalls)
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ds1.Tiles[y][x].Floors = make([]FloorShadowRecord, ds1.NumberOfFloors)
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ds1.Tiles[y][x].Shadows = make([]FloorShadowRecord, ds1.NumberOfShadowLayers)
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ds1.Tiles[y][x].Substitutions = make([]SubstitutionRecord, ds1.NumberOfSubstitutionLayers)
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}
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}
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ds1.loadLayerStreams(br, layerStream)
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ds1.loadObjects(br)
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ds1.loadSubstitutions(br)
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ds1.loadNPCs(br)
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return ds1, nil
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}
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func (ds1 *DS1) loadObjects(br *d2common.StreamReader) {
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if ds1.Version >= 2 { //nolint:gomnd // Version number
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numberOfObjects := br.GetInt32()
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ds1.Objects = make([]d2data.Object, numberOfObjects)
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for objIdx := 0; objIdx < int(numberOfObjects); objIdx++ {
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newObject := d2data.Object{}
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newObject.Type = int(br.GetInt32())
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newObject.Id = int(br.GetInt32())
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newObject.X = int(br.GetInt32())
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newObject.Y = int(br.GetInt32())
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newObject.Flags = int(br.GetInt32())
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ds1.Objects[objIdx] = newObject
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}
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} else {
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ds1.Objects = make([]d2data.Object, 0)
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}
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}
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func (ds1 *DS1) loadSubstitutions(br *d2common.StreamReader) {
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if ds1.Version >= 12 && (ds1.SubstitutionType == 1 || ds1.SubstitutionType == 2) {
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if ds1.Version >= 18 { //nolint:gomnd // Version number
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br.GetUInt32()
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}
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numberOfSubGroups := br.GetInt32()
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ds1.SubstitutionGroups = make([]SubstitutionGroup, numberOfSubGroups)
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for subIdx := 0; subIdx < int(numberOfSubGroups); subIdx++ {
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newSub := SubstitutionGroup{}
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newSub.TileX = br.GetInt32()
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newSub.TileY = br.GetInt32()
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newSub.WidthInTiles = br.GetInt32()
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newSub.HeightInTiles = br.GetInt32()
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newSub.Unknown = br.GetInt32()
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ds1.SubstitutionGroups[subIdx] = newSub
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}
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} else {
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ds1.SubstitutionGroups = make([]SubstitutionGroup, 0)
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}
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}
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func (ds1 *DS1) setupStreamLayerTypes() []d2enum.LayerStreamType {
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var layerStream []d2enum.LayerStreamType
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if ds1.Version < 4 { //nolint:gomnd // Version number
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layerStream = []d2enum.LayerStreamType{
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d2enum.LayerStreamWall1,
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d2enum.LayerStreamFloor1,
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d2enum.LayerStreamOrientation1,
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d2enum.LayerStreamSubstitute,
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d2enum.LayerStreamShadow,
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}
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} else {
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layerStream = make([]d2enum.LayerStreamType,
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(ds1.NumberOfWalls*2)+ds1.NumberOfFloors+ds1.NumberOfShadowLayers+ds1.NumberOfSubstitutionLayers)
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layerIdx := 0
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for i := 0; i < int(ds1.NumberOfWalls); i++ {
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layerStream[layerIdx] = d2enum.LayerStreamType(int(d2enum.LayerStreamWall1) + i)
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layerStream[layerIdx+1] = d2enum.LayerStreamType(int(d2enum.LayerStreamOrientation1) + i)
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layerIdx += 2
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}
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for i := 0; i < int(ds1.NumberOfFloors); i++ {
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layerStream[layerIdx] = d2enum.LayerStreamType(int(d2enum.LayerStreamFloor1) + i)
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layerIdx++
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}
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if ds1.NumberOfShadowLayers > 0 {
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layerStream[layerIdx] = d2enum.LayerStreamShadow
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layerIdx++
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}
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if ds1.NumberOfSubstitutionLayers > 0 {
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layerStream[layerIdx] = d2enum.LayerStreamSubstitute
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}
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}
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return layerStream
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}
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func (ds1 *DS1) loadNPCs(br *d2common.StreamReader) {
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if ds1.Version >= 14 { //nolint:gomnd // Version number
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numberOfNpcs := br.GetInt32()
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for npcIdx := 0; npcIdx < int(numberOfNpcs); npcIdx++ {
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numPaths := br.GetInt32()
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npcX := int(br.GetInt32())
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npcY := int(br.GetInt32())
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objIdx := -1
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for idx, ds1Obj := range ds1.Objects {
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if ds1Obj.X == npcX && ds1Obj.Y == npcY {
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objIdx = idx
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break
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}
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}
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if objIdx > -1 {
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ds1.loadNpcPaths(br, objIdx, int(numPaths))
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} else {
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if ds1.Version >= 15 { //nolint:gomnd // Version number
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br.SkipBytes(int(numPaths) * 3) //nolint:gomnd // Unknown data
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} else {
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br.SkipBytes(int(numPaths) * 2) //nolint:gomnd // Unknown data
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}
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}
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}
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}
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}
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func (ds1 *DS1) loadNpcPaths(br *d2common.StreamReader, objIdx, numPaths int) {
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if ds1.Objects[objIdx].Paths == nil {
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ds1.Objects[objIdx].Paths = make([]d2common.Path, numPaths)
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}
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for pathIdx := 0; pathIdx < numPaths; pathIdx++ {
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newPath := d2common.Path{}
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newPath.X = int(br.GetInt32())
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newPath.Y = int(br.GetInt32())
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if ds1.Version >= 15 { //nolint:gomnd // Version number
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newPath.Action = int(br.GetInt32())
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}
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ds1.Objects[objIdx].Paths[pathIdx] = newPath
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}
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}
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func (ds1 *DS1) loadLayerStreams(br *d2common.StreamReader, layerStream []d2enum.LayerStreamType) {
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var dirLookup = []int32{
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0x00, 0x01, 0x02, 0x01, 0x02, 0x03, 0x03, 0x05, 0x05, 0x06,
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0x06, 0x07, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E,
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0x0F, 0x10, 0x11, 0x12, 0x14,
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}
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for lIdx := range layerStream {
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layerStreamType := layerStream[lIdx]
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for y := 0; y < int(ds1.Height); y++ {
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for x := 0; x < int(ds1.Width); x++ {
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dw := br.GetUInt32()
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switch layerStreamType {
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case d2enum.LayerStreamWall1, d2enum.LayerStreamWall2, d2enum.LayerStreamWall3, d2enum.LayerStreamWall4:
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wallIndex := int(layerStreamType) - int(d2enum.LayerStreamWall1)
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ds1.Tiles[y][x].Walls[wallIndex].Prop1 = byte(dw & 0x000000FF) //nolint:gomnd // Bitmask
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ds1.Tiles[y][x].Walls[wallIndex].Sequence = byte((dw & 0x00003F00) >> 8) //nolint:gomnd // Bitmask
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ds1.Tiles[y][x].Walls[wallIndex].Unknown1 = byte((dw & 0x000FC000) >> 14) //nolint:gomnd // Bitmask
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ds1.Tiles[y][x].Walls[wallIndex].Style = byte((dw & 0x03F00000) >> 20) //nolint:gomnd // Bitmask
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ds1.Tiles[y][x].Walls[wallIndex].Unknown2 = byte((dw & 0x7C000000) >> 26) //nolint:gomnd // Bitmask
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ds1.Tiles[y][x].Walls[wallIndex].Hidden = byte((dw&0x80000000)>>31) > 0 //nolint:gomnd // Bitmask
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case d2enum.LayerStreamOrientation1, d2enum.LayerStreamOrientation2,
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d2enum.LayerStreamOrientation3, d2enum.LayerStreamOrientation4:
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wallIndex := int(layerStreamType) - int(d2enum.LayerStreamOrientation1)
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c := int32(dw & 0x000000FF) //nolint:gomnd // Bitmask
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if ds1.Version < 7 { //nolint:gomnd // Version number
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if c < int32(len(dirLookup)) {
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c = dirLookup[c]
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}
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}
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ds1.Tiles[y][x].Walls[wallIndex].Type = d2enum.TileType(c)
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ds1.Tiles[y][x].Walls[wallIndex].Zero = byte((dw & 0xFFFFFF00) >> 8) //nolint:gomnd // Bitmask
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case d2enum.LayerStreamFloor1, d2enum.LayerStreamFloor2:
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floorIndex := int(layerStreamType) - int(d2enum.LayerStreamFloor1)
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ds1.Tiles[y][x].Floors[floorIndex].Prop1 = byte(dw & 0x000000FF) //nolint:gomnd // Bitmask
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ds1.Tiles[y][x].Floors[floorIndex].Sequence = byte((dw & 0x00003F00) >> 8) //nolint:gomnd // Bitmask
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ds1.Tiles[y][x].Floors[floorIndex].Unknown1 = byte((dw & 0x000FC000) >> 14) //nolint:gomnd // Bitmask
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ds1.Tiles[y][x].Floors[floorIndex].Style = byte((dw & 0x03F00000) >> 20) //nolint:gomnd // Bitmask
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ds1.Tiles[y][x].Floors[floorIndex].Unknown2 = byte((dw & 0x7C000000) >> 26) //nolint:gomnd // Bitmask
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ds1.Tiles[y][x].Floors[floorIndex].Hidden = byte((dw&0x80000000)>>31) > 0 //nolint:gomnd // Bitmask
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case d2enum.LayerStreamShadow:
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ds1.Tiles[y][x].Shadows[0].Prop1 = byte(dw & 0x000000FF) //nolint:gomnd // Bitmask
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ds1.Tiles[y][x].Shadows[0].Sequence = byte((dw & 0x00003F00) >> 8) //nolint:gomnd // Bitmask
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ds1.Tiles[y][x].Shadows[0].Unknown1 = byte((dw & 0x000FC000) >> 14) //nolint:gomnd // Bitmask
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ds1.Tiles[y][x].Shadows[0].Style = byte((dw & 0x03F00000) >> 20) //nolint:gomnd // Bitmask
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ds1.Tiles[y][x].Shadows[0].Unknown2 = byte((dw & 0x7C000000) >> 26) //nolint:gomnd // Bitmask
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ds1.Tiles[y][x].Shadows[0].Hidden = byte((dw&0x80000000)>>31) > 0 //nolint:gomnd // Bitmask
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case d2enum.LayerStreamSubstitute:
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ds1.Tiles[y][x].Substitutions[0].Unknown = dw
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}
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}
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}
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}
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}
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