mirror of
https://github.com/OpenDiablo2/OpenDiablo2
synced 2024-10-31 16:27:18 -04:00
1b03e691b9
* Work on resource loading * Use new material flag name. (#261) Update ebiten ref while at it * Hopefully fix CI (#262) * Don't try to copy config.json on travis (#263) I doesn't exist anymore * Update D2Shared references * Fix character selection rect Co-authored-by: Ziemas <ziemas@ziemas.se>
656 lines
20 KiB
Go
656 lines
20 KiB
Go
package d2mapengine
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import (
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"fmt"
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"image/color"
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"log"
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"math"
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"math/rand"
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"strconv"
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"github.com/hajimehoshi/ebiten"
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"github.com/hajimehoshi/ebiten/ebitenutil"
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"github.com/OpenDiablo2/D2Shared/d2common"
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"github.com/OpenDiablo2/D2Shared/d2common/d2enum"
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"github.com/OpenDiablo2/D2Shared/d2data/d2datadict"
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"github.com/OpenDiablo2/D2Shared/d2data/d2ds1"
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"github.com/OpenDiablo2/D2Shared/d2data/d2dt1"
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"github.com/OpenDiablo2/D2Shared/d2helper"
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"github.com/OpenDiablo2/OpenDiablo2/d2asset"
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"github.com/OpenDiablo2/OpenDiablo2/d2core"
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"github.com/OpenDiablo2/OpenDiablo2/d2corehelper"
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"github.com/OpenDiablo2/OpenDiablo2/d2render"
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)
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type MapRegion struct {
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tileRect d2common.Rectangle
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regionPath string
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levelType d2datadict.LevelTypeRecord
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levelPreset d2datadict.LevelPresetRecord
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tiles []d2dt1.Tile
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ds1 d2ds1.DS1
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palette d2datadict.PaletteRec
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startX float64
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startY float64
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imageCacheRecords map[uint32]*ebiten.Image
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seed int64
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currentFrame byte
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lastFrameTime float64
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}
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func loadRegion(seed int64, tileOffsetX, tileOffsetY int, levelType d2enum.RegionIdType, levelPreset int, fileIndex int) (*MapRegion, []MapEntity) {
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region := &MapRegion{
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levelType: d2datadict.LevelTypes[levelType],
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levelPreset: d2datadict.LevelPresets[levelPreset],
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imageCacheRecords: map[uint32]*ebiten.Image{},
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seed: seed,
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}
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region.palette = d2datadict.Palettes[d2enum.PaletteType("act"+strconv.Itoa(int(region.levelType.Act)))]
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if levelType == d2enum.RegionAct5Lava {
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region.palette = d2datadict.Palettes[d2enum.PaletteType("act4")]
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}
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for _, levelTypeDt1 := range region.levelType.Files {
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if len(levelTypeDt1) != 0 && levelTypeDt1 != "" && levelTypeDt1 != "0" {
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dt1 := d2dt1.LoadDT1(d2asset.MustLoadFile("/data/global/tiles/" + levelTypeDt1))
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region.tiles = append(region.tiles, dt1.Tiles...)
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}
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}
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var levelFilesToPick []string
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for _, fileRecord := range region.levelPreset.Files {
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if len(fileRecord) != 0 && fileRecord != "" && fileRecord != "0" {
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levelFilesToPick = append(levelFilesToPick, fileRecord)
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}
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}
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levelIndex := int(math.Round(float64(len(levelFilesToPick)-1) * rand.Float64()))
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if fileIndex >= 0 && fileIndex < len(levelFilesToPick) {
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levelIndex = fileIndex
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}
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region.regionPath = levelFilesToPick[levelIndex]
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region.ds1 = d2ds1.LoadDS1(d2asset.MustLoadFile("/data/global/tiles/" + region.regionPath))
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region.tileRect = d2common.Rectangle{
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Left: tileOffsetX,
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Top: tileOffsetY,
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Width: int(region.ds1.Width),
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Height: int(region.ds1.Height),
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}
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entities := region.loadEntities()
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region.loadSpecials()
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region.generateTileCache()
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return region, entities
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}
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func (mr *MapRegion) GetTileRect() d2common.Rectangle {
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return mr.tileRect
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}
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func (mr *MapRegion) GetLevelPreset() d2datadict.LevelPresetRecord {
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return mr.levelPreset
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}
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func (mr *MapRegion) GetLevelType() d2datadict.LevelTypeRecord {
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return mr.levelType
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}
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func (mr *MapRegion) GetPath() string {
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return mr.regionPath
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}
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func (mr *MapRegion) loadSpecials() {
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for tileY := range mr.ds1.Tiles {
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for tileX := range mr.ds1.Tiles[tileY] {
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for _, wall := range mr.ds1.Tiles[tileY][tileX].Walls {
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if wall.Type == 10 && wall.Style == 30 && wall.Sequence == 0 {
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mr.startX, mr.startY = mr.getTileWorldPosition(tileX, tileY)
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mr.startX += 0.5
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mr.startY += 0.5
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return
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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 (mr *MapRegion) loadEntities() []MapEntity {
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var entities []MapEntity
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for _, object := range mr.ds1.Objects {
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worldX, worldY := mr.getTileWorldPosition(int(object.X), int(object.Y))
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switch object.Lookup.Type {
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case d2datadict.ObjectTypeCharacter:
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if object.Lookup.Base != "" && object.Lookup.Token != "" && object.Lookup.TR != "" {
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npc := d2core.CreateNPC(int32(worldX), int32(worldY), object.Lookup, 0)
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npc.SetPaths(object.Paths)
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entities = append(entities, npc)
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}
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case d2datadict.ObjectTypeItem:
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if object.ObjectInfo != nil && object.ObjectInfo.Draw && object.Lookup.Base != "" && object.Lookup.Token != "" {
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entity := d2render.CreateAnimatedEntity(int32(worldX), int32(worldY), object.Lookup, d2enum.Units)
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entity.SetMode(object.Lookup.Mode, object.Lookup.Class, 0)
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entities = append(entities, &entity)
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}
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}
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}
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return entities
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}
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func (mr *MapRegion) updateAnimations() {
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now := d2helper.Now()
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framesToAdd := math.Floor((now - mr.lastFrameTime) / 0.1)
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if framesToAdd > 0 {
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mr.lastFrameTime += 0.1 * framesToAdd
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mr.currentFrame += byte(math.Floor(framesToAdd))
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if mr.currentFrame > 9 {
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mr.currentFrame = 0
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}
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}
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}
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func (mr *MapRegion) getStartTilePosition() (float64, float64) {
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return float64(mr.tileRect.Left) + mr.startX, float64(mr.tileRect.Top) + mr.startY
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}
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func (mr *MapRegion) getRandomTile(tiles []d2dt1.Tile, x, y int, seed int64) byte {
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/* Walker's Alias Method for weighted random selection
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* with xorshifting for random numbers */
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var tileSeed uint64
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tileSeed = uint64(seed) + uint64(x)
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tileSeed *= uint64(y) + uint64(mr.levelType.Id)
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tileSeed ^= tileSeed << 13
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tileSeed ^= tileSeed >> 17
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tileSeed ^= tileSeed << 5
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weightSum := 0
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for _, tile := range tiles {
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weightSum += int(tile.RarityFrameIndex)
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}
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if weightSum == 0 {
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return 0
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}
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random := (tileSeed % uint64(weightSum))
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sum := 0
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for i, tile := range tiles {
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sum += int(tile.RarityFrameIndex)
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if sum >= int(random) {
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return byte(i)
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}
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}
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// This return shouldn't be hit
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return 0
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}
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func (mr *MapRegion) getTiles(style, sequence, tileType int32, x, y int, seed int64) []d2dt1.Tile {
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var tiles []d2dt1.Tile
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for _, tile := range mr.tiles {
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if tile.Style != style || tile.Sequence != sequence || tile.Type != tileType {
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continue
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}
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tiles = append(tiles, tile)
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}
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if len(tiles) == 0 {
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log.Printf("Unknown tile ID [%d %d %d]\n", style, sequence, tileType)
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return nil
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}
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return tiles
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}
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func (mr *MapRegion) isVisbile(viewport *Viewport) bool {
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return viewport.IsTileRectVisible(mr.tileRect)
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}
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func (mr *MapRegion) advance(tickTime float64) {
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mr.updateAnimations()
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}
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func (mr *MapRegion) getTileWorldPosition(tileX, tileY int) (float64, float64) {
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return float64(tileX + mr.tileRect.Left), float64(tileY + mr.tileRect.Top)
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}
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func (mr *MapRegion) renderPass1(viewport *Viewport, target *ebiten.Image) {
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for tileY := range mr.ds1.Tiles {
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for tileX, tile := range mr.ds1.Tiles[tileY] {
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worldX, worldY := mr.getTileWorldPosition(tileX, tileY)
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if viewport.IsTileVisible(worldX, worldY) {
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viewport.PushTranslationWorld(worldX, worldY)
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mr.renderTilePass1(tile, viewport, target)
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viewport.PopTranslation()
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}
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}
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}
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}
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func (mr *MapRegion) renderPass2(entities []MapEntity, viewport *Viewport, target *ebiten.Image) {
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for tileY := range mr.ds1.Tiles {
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for tileX, tile := range mr.ds1.Tiles[tileY] {
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worldX, worldY := mr.getTileWorldPosition(tileX, tileY)
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if viewport.IsTileVisible(worldX, worldY) {
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viewport.PushTranslationWorld(worldX, worldY)
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mr.renderTilePass2(tile, viewport, target)
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for _, entity := range entities {
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entWorldX, entWorldY := entity.GetPosition()
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if entWorldX == worldX && entWorldY == worldY {
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screenX, screenY := viewport.GetTranslationScreen()
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entity.Render(target, screenX, screenY)
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}
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}
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viewport.PopTranslation()
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}
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}
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}
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}
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func (mr *MapRegion) renderPass3(viewport *Viewport, target *ebiten.Image) {
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for tileY := range mr.ds1.Tiles {
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for tileX, tile := range mr.ds1.Tiles[tileY] {
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worldX, worldY := mr.getTileWorldPosition(tileX, tileY)
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if viewport.IsTileVisible(worldX, worldY) {
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viewport.PushTranslationWorld(worldX, worldY)
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mr.renderTilePass3(tile, viewport, target)
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viewport.PopTranslation()
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}
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}
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}
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}
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func (mr *MapRegion) renderTilePass1(tile d2ds1.TileRecord, viewport *Viewport, target *ebiten.Image) {
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for _, wall := range tile.Walls {
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if !wall.Hidden && wall.Prop1 != 0 && wall.Type.LowerWall() {
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mr.renderWall(wall, viewport, target)
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}
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}
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for _, floor := range tile.Floors {
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if !floor.Hidden && floor.Prop1 != 0 {
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mr.renderFloor(floor, viewport, target)
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}
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}
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for _, shadow := range tile.Shadows {
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if !shadow.Hidden && shadow.Prop1 != 0 {
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mr.renderShadow(shadow, viewport, target)
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}
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}
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}
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func (mr *MapRegion) renderTilePass2(tile d2ds1.TileRecord, viewport *Viewport, target *ebiten.Image) {
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for _, wall := range tile.Walls {
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if !wall.Hidden && wall.Type.UpperWall() {
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mr.renderWall(wall, viewport, target)
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}
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}
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}
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func (mr *MapRegion) renderTilePass3(tile d2ds1.TileRecord, viewport *Viewport, target *ebiten.Image) {
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for _, wall := range tile.Walls {
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if wall.Type == d2enum.Roof {
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mr.renderWall(wall, viewport, target)
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}
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}
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}
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func (mr *MapRegion) renderFloor(tile d2ds1.FloorShadowRecord, viewport *Viewport, target *ebiten.Image) {
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var img *ebiten.Image
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if !tile.Animated {
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img = mr.getImageCacheRecord(tile.Style, tile.Sequence, 0, tile.RandomIndex)
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} else {
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img = mr.getImageCacheRecord(tile.Style, tile.Sequence, 0, mr.currentFrame)
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}
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if img == nil {
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log.Printf("Render called on uncached floor {%v,%v}", tile.Style, tile.Sequence)
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return
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}
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viewport.PushTranslationOrtho(-80, float64(tile.YAdjust))
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screenX, screenY := viewport.GetTranslationScreen()
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opts := &ebiten.DrawImageOptions{}
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opts.GeoM.Translate(float64(screenX), float64(screenY))
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target.DrawImage(img, opts)
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viewport.PopTranslation()
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}
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func (mr *MapRegion) renderWall(tile d2ds1.WallRecord, viewport *Viewport, target *ebiten.Image) {
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img := mr.getImageCacheRecord(tile.Style, tile.Sequence, tile.Type, tile.RandomIndex)
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if img == nil {
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log.Printf("Render called on uncached wall {%v,%v,%v}", tile.Style, tile.Sequence, tile.Type)
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return
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}
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viewport.PushTranslationOrtho(-80, float64(tile.YAdjust))
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screenX, screenY := viewport.GetTranslationScreen()
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opts := &ebiten.DrawImageOptions{}
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opts.GeoM.Translate(float64(screenX), float64(screenY))
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target.DrawImage(img, opts)
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viewport.PopTranslation()
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}
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func (mr *MapRegion) renderShadow(tile d2ds1.FloorShadowRecord, viewport *Viewport, target *ebiten.Image) {
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img := mr.getImageCacheRecord(tile.Style, tile.Sequence, 13, tile.RandomIndex)
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if img == nil {
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log.Printf("Render called on uncached shadow {%v,%v}", tile.Style, tile.Sequence)
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return
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}
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viewport.PushTranslationOrtho(-80, float64(tile.YAdjust))
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screenX, screenY := viewport.GetTranslationScreen()
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opts := &ebiten.DrawImageOptions{}
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opts.GeoM.Translate(float64(screenX), float64(screenY))
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opts.ColorM = d2corehelper.ColorToColorM(color.RGBA{255, 255, 255, 160})
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target.DrawImage(img, opts)
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viewport.PopTranslation()
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}
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func (mr *MapRegion) renderDebug(debugVisLevel int, viewport *Viewport, target *ebiten.Image) {
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for tileY := range mr.ds1.Tiles {
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for tileX := range mr.ds1.Tiles[tileY] {
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worldX, worldY := mr.getTileWorldPosition(tileX, tileY)
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if viewport.IsTileVisible(worldX, worldY) {
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mr.renderTileDebug(int(worldX), int(worldY), debugVisLevel, viewport, target)
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}
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}
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}
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}
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func (mr *MapRegion) renderTileDebug(x, y int, debugVisLevel int, viewport *Viewport, target *ebiten.Image) {
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if debugVisLevel > 0 {
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subtileColor := color.RGBA{80, 80, 255, 100}
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tileColor := color.RGBA{255, 255, 255, 255}
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screenX1, screenY1 := viewport.WorldToScreen(float64(x), float64(y))
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screenX2, screenY2 := viewport.WorldToScreen(float64(x+1), float64(y))
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screenX3, screenY3 := viewport.WorldToScreen(float64(x), float64(y+1))
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ebitenutil.DrawLine(target, float64(screenX1), float64(screenY1), float64(screenX2), float64(screenY2), tileColor)
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ebitenutil.DrawLine(target, float64(screenX1), float64(screenY1), float64(screenX3), float64(screenY3), tileColor)
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ebitenutil.DebugPrintAt(target, fmt.Sprintf("%v,%v", x, y), screenX1-10, screenY1+10)
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if debugVisLevel > 1 {
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for i := 1; i <= 4; i++ {
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x := i * 16
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y := i * 8
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ebitenutil.DrawLine(target, float64(screenX1-x), float64(screenY1+y), float64(screenX1-x+80), float64(screenY1+y+40), subtileColor)
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ebitenutil.DrawLine(target, float64(screenX1+x), float64(screenY1+y), float64(screenX1+x-80), float64(screenY1+y+40), subtileColor)
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}
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tile := mr.ds1.Tiles[y][x]
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for i := range tile.Floors {
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ebitenutil.DebugPrintAt(target, fmt.Sprintf("f: %v-%v", tile.Floors[i].Style, tile.Floors[i].Sequence), screenX1-20, screenY1+10+(i+1)*14)
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}
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}
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}
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}
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func (mr *MapRegion) generateTileCache() {
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for tileY := range mr.ds1.Tiles {
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for tileX := range mr.ds1.Tiles[tileY] {
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tile := mr.ds1.Tiles[tileY][tileX]
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for i := range tile.Floors {
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if !tile.Floors[i].Hidden && tile.Floors[i].Prop1 != 0 {
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mr.generateFloorCache(&tile.Floors[i], tileX, tileY)
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}
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}
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for i := range tile.Shadows {
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if !tile.Shadows[i].Hidden && tile.Shadows[i].Prop1 != 0 {
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mr.generateShadowCache(&tile.Shadows[i], tileX, tileY)
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}
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}
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for i := range tile.Walls {
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if !tile.Walls[i].Hidden && tile.Walls[i].Prop1 != 0 {
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mr.generateWallCache(&tile.Walls[i], tileX, tileY)
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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 (mr *MapRegion) getImageCacheRecord(style, sequence byte, tileType d2enum.TileType, randomIndex byte) *ebiten.Image {
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lookupIndex := uint32(style)<<24 | uint32(sequence)<<16 | uint32(tileType)<<8 | uint32(randomIndex)
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return mr.imageCacheRecords[lookupIndex]
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}
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func (mr *MapRegion) setImageCacheRecord(style, sequence byte, tileType d2enum.TileType, randomIndex byte, image *ebiten.Image) {
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lookupIndex := uint32(style)<<24 | uint32(sequence)<<16 | uint32(tileType)<<8 | uint32(randomIndex)
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mr.imageCacheRecords[lookupIndex] = image
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}
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func (mr *MapRegion) generateFloorCache(tile *d2ds1.FloorShadowRecord, tileX, tileY int) {
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tileOptions := mr.getTiles(int32(tile.Style), int32(tile.Sequence), 0, tileX, tileY, mr.seed)
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var tileData []*d2dt1.Tile
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var tileIndex byte
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if tileOptions == nil {
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log.Printf("Could not locate tile Style:%d, Seq: %d, Type: %d\n", tile.Style, tile.Sequence, 0)
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tileData = append(tileData, &d2dt1.Tile{})
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tileData[0].Width = 10
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tileData[0].Height = 10
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} else {
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if !tileOptions[0].MaterialFlags.Lava {
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tileIndex = mr.getRandomTile(tileOptions, tileX, tileY, mr.seed)
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tileData = append(tileData, &tileOptions[tileIndex])
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|
} else {
|
|
tile.Animated = true
|
|
for i := range tileOptions {
|
|
tileData = append(tileData, &tileOptions[i])
|
|
}
|
|
}
|
|
}
|
|
|
|
for i := range tileData {
|
|
if !tileData[i].MaterialFlags.Lava {
|
|
tile.RandomIndex = tileIndex
|
|
} else {
|
|
tileIndex = byte(tileData[i].RarityFrameIndex)
|
|
}
|
|
cachedImage := mr.getImageCacheRecord(tile.Style, tile.Sequence, 0, tileIndex)
|
|
if cachedImage != nil {
|
|
return
|
|
}
|
|
tileYMinimum := int32(0)
|
|
for _, block := range tileData[i].Blocks {
|
|
tileYMinimum = d2helper.MinInt32(tileYMinimum, int32(block.Y))
|
|
}
|
|
tileYOffset := d2helper.AbsInt32(tileYMinimum)
|
|
tileHeight := d2helper.AbsInt32(tileData[i].Height)
|
|
image, _ := ebiten.NewImage(int(tileData[i].Width), int(tileHeight), ebiten.FilterNearest)
|
|
pixels := make([]byte, 4*tileData[i].Width*tileHeight)
|
|
mr.decodeTileGfxData(tileData[i].Blocks, &pixels, tileYOffset, tileData[i].Width)
|
|
image.ReplacePixels(pixels)
|
|
mr.setImageCacheRecord(tile.Style, tile.Sequence, 0, tileIndex, image)
|
|
}
|
|
}
|
|
|
|
func (mr *MapRegion) generateShadowCache(tile *d2ds1.FloorShadowRecord, tileX, tileY int) {
|
|
tileOptions := mr.getTiles(int32(tile.Style), int32(tile.Sequence), 13, tileX, tileY, mr.seed)
|
|
var tileIndex byte
|
|
var tileData *d2dt1.Tile
|
|
if tileOptions == nil {
|
|
return
|
|
} else {
|
|
tileIndex = mr.getRandomTile(tileOptions, tileX, tileY, mr.seed)
|
|
tileData = &tileOptions[tileIndex]
|
|
}
|
|
|
|
tile.RandomIndex = tileIndex
|
|
tileMinY := int32(0)
|
|
tileMaxY := int32(0)
|
|
for _, block := range tileData.Blocks {
|
|
tileMinY = d2helper.MinInt32(tileMinY, int32(block.Y))
|
|
tileMaxY = d2helper.MaxInt32(tileMaxY, int32(block.Y+32))
|
|
}
|
|
tileYOffset := -tileMinY
|
|
tileHeight := int(tileMaxY - tileMinY)
|
|
tile.YAdjust = int(tileMinY + 80)
|
|
|
|
cachedImage := mr.getImageCacheRecord(tile.Style, tile.Sequence, 13, tileIndex)
|
|
if cachedImage != nil {
|
|
return
|
|
}
|
|
|
|
image, _ := ebiten.NewImage(int(tileData.Width), int(tileHeight), ebiten.FilterNearest)
|
|
pixels := make([]byte, 4*tileData.Width*int32(tileHeight))
|
|
mr.decodeTileGfxData(tileData.Blocks, &pixels, tileYOffset, tileData.Width)
|
|
image.ReplacePixels(pixels)
|
|
mr.setImageCacheRecord(tile.Style, tile.Sequence, 13, tileIndex, image)
|
|
}
|
|
|
|
func (mr *MapRegion) generateWallCache(tile *d2ds1.WallRecord, tileX, tileY int) {
|
|
tileOptions := mr.getTiles(int32(tile.Style), int32(tile.Sequence), int32(tile.Type), tileX, tileY, mr.seed)
|
|
var tileIndex byte
|
|
var tileData *d2dt1.Tile
|
|
if tileOptions == nil {
|
|
return
|
|
} else {
|
|
tileIndex = mr.getRandomTile(tileOptions, tileX, tileY, mr.seed)
|
|
tileData = &tileOptions[tileIndex]
|
|
}
|
|
|
|
tile.RandomIndex = tileIndex
|
|
var newTileData *d2dt1.Tile = nil
|
|
|
|
if tile.Type == 3 {
|
|
newTileOptions := mr.getTiles(int32(tile.Style), int32(tile.Sequence), int32(4), tileX, tileY, mr.seed)
|
|
newTileIndex := mr.getRandomTile(newTileOptions, tileX, tileY, mr.seed)
|
|
newTileData = &newTileOptions[newTileIndex]
|
|
}
|
|
|
|
tileMinY := int32(0)
|
|
tileMaxY := int32(0)
|
|
|
|
target := tileData
|
|
|
|
if newTileData != nil && newTileData.Height < tileData.Height {
|
|
target = newTileData
|
|
}
|
|
|
|
for _, block := range target.Blocks {
|
|
tileMinY = d2helper.MinInt32(tileMinY, int32(block.Y))
|
|
tileMaxY = d2helper.MaxInt32(tileMaxY, int32(block.Y+32))
|
|
}
|
|
|
|
realHeight := d2helper.MaxInt32(d2helper.AbsInt32(tileData.Height), tileMaxY-tileMinY)
|
|
tileYOffset := -tileMinY
|
|
//tileHeight := int(tileMaxY - tileMinY)
|
|
|
|
if tile.Type == 15 {
|
|
tile.YAdjust = -int(tileData.RoofHeight)
|
|
} else {
|
|
tile.YAdjust = int(tileMinY) + 80
|
|
}
|
|
|
|
cachedImage := mr.getImageCacheRecord(tile.Style, tile.Sequence, tile.Type, tileIndex)
|
|
if cachedImage != nil {
|
|
return
|
|
}
|
|
|
|
if realHeight == 0 {
|
|
log.Printf("Invalid 0 height for wall tile")
|
|
return
|
|
}
|
|
|
|
image, _ := ebiten.NewImage(160, int(realHeight), ebiten.FilterNearest)
|
|
pixels := make([]byte, 4*160*realHeight)
|
|
mr.decodeTileGfxData(tileData.Blocks, &pixels, tileYOffset, 160)
|
|
|
|
if newTileData != nil {
|
|
mr.decodeTileGfxData(newTileData.Blocks, &pixels, tileYOffset, 160)
|
|
}
|
|
|
|
if err := image.ReplacePixels(pixels); err != nil {
|
|
log.Panicf(err.Error())
|
|
}
|
|
|
|
mr.setImageCacheRecord(tile.Style, tile.Sequence, tile.Type, tileIndex, image)
|
|
}
|
|
|
|
func (mr *MapRegion) decodeTileGfxData(blocks []d2dt1.Block, pixels *[]byte, tileYOffset int32, tileWidth int32) {
|
|
for _, block := range blocks {
|
|
if block.Format == d2dt1.BlockFormatIsometric {
|
|
// 3D isometric decoding
|
|
xjump := []int32{14, 12, 10, 8, 6, 4, 2, 0, 2, 4, 6, 8, 10, 12, 14}
|
|
nbpix := []int32{4, 8, 12, 16, 20, 24, 28, 32, 28, 24, 20, 16, 12, 8, 4}
|
|
blockX := int32(block.X)
|
|
blockY := int32(block.Y)
|
|
length := int32(256)
|
|
x := int32(0)
|
|
y := int32(0)
|
|
idx := 0
|
|
for length > 0 {
|
|
x = xjump[y]
|
|
n := nbpix[y]
|
|
length -= n
|
|
for n > 0 {
|
|
colorIndex := block.EncodedData[idx]
|
|
if colorIndex != 0 {
|
|
pixelColor := mr.palette.Colors[colorIndex]
|
|
offset := 4 * (((blockY + y + tileYOffset) * tileWidth) + (blockX + x))
|
|
(*pixels)[offset] = pixelColor.R
|
|
(*pixels)[offset+1] = pixelColor.G
|
|
(*pixels)[offset+2] = pixelColor.B
|
|
(*pixels)[offset+3] = 255
|
|
}
|
|
x++
|
|
n--
|
|
idx++
|
|
}
|
|
y++
|
|
}
|
|
} else {
|
|
// RLE Encoding
|
|
blockX := int32(block.X)
|
|
blockY := int32(block.Y)
|
|
x := int32(0)
|
|
y := int32(0)
|
|
idx := 0
|
|
length := block.Length
|
|
for length > 0 {
|
|
b1 := block.EncodedData[idx]
|
|
b2 := block.EncodedData[idx+1]
|
|
idx += 2
|
|
length -= 2
|
|
if (b1 | b2) == 0 {
|
|
x = 0
|
|
y++
|
|
continue
|
|
}
|
|
x += int32(b1)
|
|
length -= int32(b2)
|
|
for b2 > 0 {
|
|
colorIndex := block.EncodedData[idx]
|
|
if colorIndex != 0 {
|
|
pixelColor := mr.palette.Colors[colorIndex]
|
|
offset := 4 * (((blockY + y + tileYOffset) * tileWidth) + (blockX + x))
|
|
(*pixels)[offset] = pixelColor.R
|
|
(*pixels)[offset+1] = pixelColor.G
|
|
(*pixels)[offset+2] = pixelColor.B
|
|
(*pixels)[offset+3] = 255
|
|
|
|
}
|
|
idx++
|
|
x++
|
|
b2--
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|