support street actions

1 files changed, 56 insertions, 6 deletions

diff --git a/go/game/targets.go b/go/game/targets.go
index 236b4850..b4456f55 100644
--- a/go/game/targets.go
+++ b/go/game/targets.go
@@ -623,17 +623,22 @@ func availableTileConstraint(action Action, card *Card) TargetConstraintFunc {
 	}
 }
 
-func moveConstraint(s *LocalState, action Action, u *Unit) TargetConstraintFunc {
-	return func(t interface{}) (err error) {
+func moveConstraint(_ *LocalState, action Action, u *Unit) TargetConstraintFunc {
+	return func(t any) (err error) {
 		// Some actions allow also unit targets as though they were tiles
 		tile := relaxedTileTarget(action, t)
-		if slices.Contains(u.MoveRangeTiles(s.Map()), tile) {
+		if slices.Contains(u.MoveRangeTiles(), tile) {
 			return nil
 		}
 		return fmt.Errorf("tile %v is not in %v's movement range", tile, u)
 	}
 }
 
+var (
+	ErrTargetWrongTileType    = errors.New("wrong tile type")
+	ErrTargetNotConnectedTile = errors.New("not connected")
+)
+
 func parseTileTargetConstraint(desc string, s *LocalState, action Action) []TargetConstraintFunc {
 	constraints := []TargetConstraintFunc{}
 
@@ -656,6 +661,8 @@ func parseTileTargetConstraint(desc string, s *LocalState, action Action) []Targ
 		card = a.Card
 	case *MoveAction:
 		card = a.Card
+	case *StreetAction:
+		card = a.Card
 	}
 
 	if strings.Contains(desc, "spawn") {
@@ -663,7 +670,7 @@ func parseTileTargetConstraint(desc string, s *LocalState, action Action) []Targ
 			log.Panicf("Not implemented spawn tile constraint for %T", action)
 		}
 
-		constraints = append(constraints, func(t interface{}) (err error) {
+		constraints = append(constraints, func(t any) (err error) {
 			tile := relaxedTileTarget(action, t)
 			if slices.Contains(s.AvailableSpawnTiles(player, card), tile) {
 				return nil
@@ -677,7 +684,7 @@ func parseTileTargetConstraint(desc string, s *LocalState, action Action) []Targ
 	}
 
 	if strings.Contains(desc, "water") {
-		constraints = append(constraints, func(t interface{}) (err error) {
+		constraints = append(constraints, func(t any) (err error) {
 			tile := t.(*Tile)
 			if tile.Water {
 				return nil
@@ -691,7 +698,7 @@ func parseTileTargetConstraint(desc string, s *LocalState, action Action) []Targ
 	}
 
 	if strings.Contains(desc, "free") {
-		constraints = append(constraints, func(t interface{}) (err error) {
+		constraints = append(constraints, func(t any) (err error) {
 			tile := t.(*Tile)
 			if tile.IsFree() {
 				return nil
@@ -700,6 +707,49 @@ func parseTileTargetConstraint(desc string, s *LocalState, action Action) []Targ
 		})
 	}
 
+	for name := range TileNames {
+		if strings.Contains(desc, name) {
+			tileType := TileNames[name]
+			if strings.Contains(desc, "connected") {
+				// Find connected tiles
+				u := action.Source().(*Unit)
+				graph := s.Map().generateConnectedMovementRangeGraphFor(u, tileType)
+				tiles := []*Tile{}
+				for _, pos := range PositionsInRange(u.Tile().Position, u.Movement.Range, false) {
+					tile := s.Map().TileAt(pos)
+					if tile == nil || tile.Type != tileType {
+						continue
+					}
+
+					_, err := findPathTo(graph, u, pos)
+					if err != nil {
+						continue
+					}
+
+					tiles = append(tiles, tile)
+				}
+
+				// Check if tile is connected
+				constraints = append(constraints, func(t any) (err error) {
+					tile := t.(*Tile)
+					if !slices.Contains(tiles, tile) {
+						err = ErrTargetNotConnectedTile
+					}
+					return
+				})
+			}
+
+			// Tile type constraint
+			constraints = append(constraints, func(t any) error {
+				tile := t.(*Tile)
+				if tile.Type == tileType {
+					return nil
+				}
+				return ErrTargetWrongTileType
+			})
+		}
+	}
+
 	return constraints
 }