delaunay mapgen 1st version
This commit is contained in:
@ -1,4 +1,4 @@
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package mapgens
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package _default
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import (
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"fmt"
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196
engine/gamemap/mapgens/delaunaymst/delaunay_mst.go
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196
engine/gamemap/mapgens/delaunaymst/delaunay_mst.go
Normal file
@ -0,0 +1,196 @@
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package delaunaymst
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import (
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"fmt"
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"lab.zaar.be/thefish/alchemyst-go/engine/gamemap"
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"lab.zaar.be/thefish/alchemyst-go/engine/types"
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"lab.zaar.be/thefish/alchemyst-go/util"
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"lab.zaar.be/thefish/alchemyst-go/util/appctx"
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"lab.zaar.be/thefish/alchemyst-go/util/delaunay"
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)
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//fixme move to config
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var minRoomSize = 5
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var maxRoomSize = 15
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var maxrooms = 59
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var fges = map[int]types.RectFill{
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1: types.RectFill{
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Top: func() *gamemap.Tile { return gamemap.NewWall() },
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Bottom: func() *gamemap.Tile { return gamemap.NewWall() },
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Left: func() *gamemap.Tile { return gamemap.NewWall() },
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Right: func() *gamemap.Tile { return gamemap.NewWall() },
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BottomLeft: func() *gamemap.Tile { return gamemap.NewWall() },
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BottomRight: func() *gamemap.Tile { return gamemap.NewWall() },
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TopLeft: func() *gamemap.Tile { return gamemap.NewWall() },
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TopRight: func() *gamemap.Tile { return gamemap.NewWall() },
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Body: func() *gamemap.Tile { return gamemap.NewFloor() },
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},
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2: types.RectFill{
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Top: func() *gamemap.Tile { return gamemap.NewWaterTile() },
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Bottom: func() *gamemap.Tile { return gamemap.NewWaterTile() },
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Left: func() *gamemap.Tile { return gamemap.NewWaterTile() },
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Right: func() *gamemap.Tile { return gamemap.NewWaterTile() },
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BottomLeft: func() *gamemap.Tile { return gamemap.NewWaterTile() },
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BottomRight: func() *gamemap.Tile { return gamemap.NewWaterTile() },
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TopLeft: func() *gamemap.Tile { return gamemap.NewWaterTile() },
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TopRight: func() *gamemap.Tile { return gamemap.NewWaterTile() },
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Body: func() *gamemap.Tile { return gamemap.NewDeepWaterTile() },
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},
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}
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func DelaunayMstGen(ctx appctx.ClientCtx, l *gamemap.Level) (*gamemap.Level, []gamemap.Room) {
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rng := util.NewRNG()
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//load prefabs
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pfLoader := gamemap.NewPrefabLoader(ctx)
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pfRooms := pfLoader.PrefabRoomsList()
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//fill with walls
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for i := 0; i < l.W; i ++ {
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for j := 0; j < l.H; j++ {
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l.SetTileByXY(i, j, gamemap.NewWall())
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}
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}
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rooms := make([]gamemap.Room, 0)
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prefabUsed := false
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for i := 0; i < maxrooms; i++ {
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failed := false
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var fillage types.RectFill
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fillage = fges[rng.GetWeightedEntity(map[int]int{1: 10, 2: 1})]
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var newRoom gamemap.Room
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if !prefabUsed || rng.Range(0, 5) > 3 {
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//prefab
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prefabUsed = true
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r := pfRooms[rng.Range(0, len(pfRooms))] //copy to local scope
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newRoom = r
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} else {
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newRoom = gamemap.NewRandomRectRoom(
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rng,
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rng.Range(minRoomSize, maxRoomSize),
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rng.Range(minRoomSize, maxRoomSize),
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fillage,
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)
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}
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where := types.Coords{
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rng.Range(1, l.W-2-newRoom.W),
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rng.Range(1, l.H-2-newRoom.H),
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}
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newRoom.MoveToCoords(where)
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for _, otherRoom := range rooms {
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if otherRoom.Intersects(newRoom.Rect) {
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failed = true
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break
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}
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}
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if failed {
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continue
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}
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if len(newRoom.Connectors) > 0 {
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rooms = append(rooms, newRoom)
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}
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}
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for _, room := range rooms {
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err := room.BlitToLevel(l)
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if err != nil {
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fmt.Printf("err: %v", err)
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}
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}
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centers := make([]types.Coords, 0)
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for _, room := range rooms {
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centers = append(centers, room.Center)
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}
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for _, edge := range delaunay.GetMst(centers, l.W, l.H) {
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MedianStraight(rng, l, rooms, centers, edge)
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}
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return l, rooms
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}
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func MedianStraight(rng *util.RNG, l *gamemap.Level, rooms []gamemap.Room, centers []types.Coords, edge types.Edge) {
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//find connected rooms
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var fromRoom, toRoom gamemap.Room
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for _, room := range rooms {
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if room.Center == edge.From {
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fromRoom = room
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continue
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}
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if room.Center == edge.To {
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toRoom = room
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continue
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}
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if len(fromRoom.Connectors) > 0 && len(toRoom.Connectors) > 0 {
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break
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}
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}
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midpoint := edge.Midpoint()
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fromConnector := findNearestCoonector(midpoint, fromRoom)
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toConnector := findNearestCoonector(midpoint, toRoom)
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connectStraight(rng, l, fromConnector, toConnector, midpoint)
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}
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func findNearestCoonector(midpoint types.Coords, room gamemap.Room) types.Coords {
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var nearest types.Coords
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for _, con := range room.Connectors {
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if nearest.X == 0 {
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nearest = con
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continue
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}
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if midpoint.DistanceTo(con) < midpoint.DistanceTo(nearest) {
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nearest = con
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}
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}
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return nearest
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}
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func connectStraight(rng *util.RNG, l *gamemap.Level, from, to, midpoint types.Coords) {
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toss := rng.Range(0, 1)
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if toss == 0 {
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digHTunnel(l, from.X, midpoint.X, from.Y)
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digVTunnel(l, from.Y, to.Y, midpoint.X)
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digHTunnel(l, midpoint.X, to.X, to.Y)
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} else {
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digVTunnel(l, from.Y, midpoint.Y, from.X)
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digHTunnel(l, from.X, to.X, midpoint.Y)
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digVTunnel(l, midpoint.Y, to.Y, to.X)
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}
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}
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func digHTunnel(l *gamemap.Level, x1, x2, y int) {
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var start, finish int
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if x1 < x2 {
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start = x1
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finish = x2
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} else {
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start = x2
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finish = x1
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}
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for i := start; i <= finish; i++ {
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if l.InBounds(types.Coords{i, y}) {
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l.SetTileByXY(i, y, gamemap.NewFloor())
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//l.Tiles[i][y] = gamemap.NewFloor()
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}
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}
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}
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func digVTunnel(l *gamemap.Level, y1, y2, x int) {
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var start, finish int
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if y1 < y2 {
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start = y1
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finish = y2
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} else {
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start = y2
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finish = y1
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}
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for i := start; i <= finish; i++ {
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if l.InBounds(types.Coords{x, i}) {
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l.SetTileByXY(x, i, gamemap.NewFloor())
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}
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}
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}
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@ -57,11 +57,12 @@ func (pfbl PrefabLoader) PrefabRoomsList() []Room {
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panic(err)
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}
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//prepare actual legends
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currentTileLegend := file.DefaultTileLegend
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currentMobsLegend := file.DefaultMobsLegend
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currentItemLegend := file.DefaultItemLegend
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for _, rawPrefab := range file.Prefabs {
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//prepare actual legends
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currentTileLegend := file.DefaultTileLegend
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currentMobsLegend := file.DefaultMobsLegend
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currentItemLegend := file.DefaultItemLegend
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for k,v := range rawPrefab.TileLegend {
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currentTileLegend[k] = v
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@ -99,7 +100,7 @@ func (pfbl PrefabLoader) PrefabRoomsList() []Room {
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continue
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}
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if shortName == "connector" {
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f = NewFloor
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f = NewWall
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room.Connectors = append(room.Connectors, types.Coords{i,j})
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} else {
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f, ok = TileTypeMap[shortName]
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@ -122,4 +123,4 @@ var TileTypeMap = map[string]func()*Tile{
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"decorated_wall": NewDecoratedWall,
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"water": NewWaterTile,
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"deep_water": NewDeepWaterTile,
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}
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}
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