154 lines
4.2 KiB
Go
154 lines
4.2 KiB
Go
package d2map
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import (
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"log"
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"math"
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"strings"
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"github.com/beefsack/go-astar"
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"github.com/OpenDiablo2/OpenDiablo2/d2common/d2enum"
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"github.com/OpenDiablo2/OpenDiablo2/d2core/d2render"
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)
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type MapEntity interface {
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Render(target d2render.Surface)
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Advance(tickTime float64)
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GetPosition() (float64, float64)
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}
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// Represents the map data for a specific location
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type MapEngine struct {
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seed int64
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regions []*MapRegion
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entities MapEntitiesSearcher
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}
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// Creates a new instance of the map engine
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func CreateMapEngine() *MapEngine {
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engine := &MapEngine{
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seed: 0,
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entities: NewRangeSearcher(),
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}
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return engine
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}
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func (m *MapEngine) SetSeed(seed int64) {
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log.Printf("Setting map engine seed to %d", seed)
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m.seed = seed
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}
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func (m *MapEngine) GetStartPosition() (float64, float64) {
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var startX, startY float64
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if len(m.regions) > 0 {
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region := m.regions[0]
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startX, startY = region.getStartTilePosition()
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}
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return startX, startY
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}
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// Returns the center of the map
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func (m *MapEngine) GetCenterPosition() (float64, float64) {
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var centerX, centerY float64
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if len(m.regions) > 0 {
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region := m.regions[0]
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centerX = float64(region.tileRect.Left) + float64(region.tileRect.Width)/2
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centerY = float64(region.tileRect.Top) + float64(region.tileRect.Height)/2
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}
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return centerX, centerY
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}
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func (m *MapEngine) GenerateMap(regionType d2enum.RegionIdType, levelPreset int, fileIndex int, cacheTiles bool) {
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region, entities := loadRegion(m.seed, 0, 0, regionType, levelPreset, fileIndex, cacheTiles)
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m.regions = append(m.regions, region)
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m.entities.Add(entities...)
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}
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func (m *MapEngine) GenerateAct1Overworld(cacheTiles bool) {
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//d2audio.PlayBGM("/data/global/music/Act1/town1.wav") // TODO: Temp stuff here
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region, entities := loadRegion(m.seed, 0, 0, d2enum.RegionAct1Town, 1, -1, cacheTiles)
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m.regions = append(m.regions, region)
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m.entities.Add(entities...)
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if strings.Contains(region.regionPath, "E1") {
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region, entities := loadRegion(m.seed, region.tileRect.Width-1, 0, d2enum.RegionAct1Town, 2, -1, cacheTiles)
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m.AppendRegion(region)
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m.entities.Add(entities...)
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} else if strings.Contains(region.regionPath, "S1") {
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region, entities := loadRegion(m.seed, 0, region.tileRect.Height-1, d2enum.RegionAct1Town, 3, -1, cacheTiles)
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m.AppendRegion(region)
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m.entities.Add(entities...)
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}
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}
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// Appends a region to the map
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func (m *MapEngine) AppendRegion(region *MapRegion) {
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// TODO: Stitch together region.walkableArea
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log.Printf("Warning: Walkable areas are not currently implemented")
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m.regions = append(m.regions, region)
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}
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// Returns the region located at the specified tile location
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func (m *MapEngine) GetRegionAtTile(x, y int) *MapRegion {
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for _, region := range m.regions {
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if region.tileRect.IsInRect(x, y) {
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return region
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}
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}
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return nil
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}
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func (m *MapEngine) AddEntity(entity MapEntity) {
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m.entities.Add(entity)
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}
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func (m *MapEngine) RemoveEntity(entity MapEntity) {
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if entity == nil {
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return
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}
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m.entities.Remove(entity)
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}
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func (m *MapEngine) Advance(tickTime float64) {
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for _, region := range m.regions {
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//if region.isVisbile(m.viewport) {
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region.advance(tickTime)
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//}
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}
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for _, entity := range m.entities.All() {
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entity.Advance(tickTime)
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}
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m.entities.Update()
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}
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func (m *MapEngine) PathFind(startX, startY, endX, endY float64) (path []astar.Pather, distance float64, found bool) {
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startTileX := int(math.Floor(startX))
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startTileY := int(math.Floor(startY))
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startSubtileX := int((startX - float64(int(startX))) * 5)
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startSubtileY := int((startY - float64(int(startY))) * 5)
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startRegion := m.GetRegionAtTile(startTileX, startTileY)
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startNode := &startRegion.walkableArea[startSubtileY+((startTileY-startRegion.tileRect.Top)*5)][startSubtileX+((startTileX-startRegion.tileRect.Left)*5)]
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endTileX := int(math.Floor(endX))
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endTileY := int(math.Floor(endY))
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endSubtileX := int((endX - float64(int(endX))) * 5)
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endSubtileY := int((endY - float64(int(endY))) * 5)
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endRegion := m.GetRegionAtTile(endTileX, endTileY)
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endNode := &endRegion.walkableArea[endSubtileY+((endTileY-endRegion.tileRect.Top)*5)][endSubtileX+((endTileX-endRegion.tileRect.Left)*5)]
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path, distance, found = astar.Path(endNode, startNode)
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if path != nil {
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path = path[1:]
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}
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return
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}
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