reorganized items, objects, and rooms in directories. oranized module names. added startup checks.

1 files changed, 317 insertions, 0 deletions

diff --git a/internal/game/ui_map.go b/internal/game/ui_map.go
new file mode 100644
index 0000000..32d3d7c
--- /dev/null
+++ b/internal/game/ui_map.go
@@ -0,0 +1,317 @@
+package game
+
+import (
+	"strings"
+
+	"thehouseoficarus/internal/world"
+)
+
+type mapGlyphs struct {
+	topLeft, topRight             rune
+	bottomLeft, bottomRight       rune
+	side                          rune
+	topFill                       rune
+	connectorH, connectorV        rune
+	upArrow, downArrow            rune
+}
+
+func mapGlyphsForPlayer(unicode bool) mapGlyphs {
+	if unicode {
+		return mapGlyphs{
+			topLeft: '╔', topRight: '╗', bottomLeft: '╚', bottomRight: '╝',
+			side: '║', topFill: '═', connectorH: '─', connectorV: '│',
+			upArrow: '↑', downArrow: '↓',
+		}
+	}
+	return mapGlyphs{
+		topLeft: '.', topRight: '.', bottomLeft: ':', bottomRight: ':',
+		side: ':', topFill: '.', connectorH: '-', connectorV: '|',
+		upArrow: '^', downArrow: 'v',
+	}
+}
+
+type mapGraph struct {
+	posToRoom map[[2]int]int
+	roomToPos map[int][2]int
+}
+
+var bfsDirs = []struct {
+	dir    world.ExitDir
+	dx, dy int
+}{
+	{world.North, 0, -1},
+	{world.South, 0, 1},
+	{world.East, 1, 0},
+	{world.West, -1, 0},
+}
+
+func buildGraph(g *Game, startRoomID int) *mapGraph {
+	mg := &mapGraph{
+		posToRoom: make(map[[2]int]int),
+		roomToPos: make(map[int][2]int),
+	}
+
+	type node struct {
+		roomID int
+		x, y   int
+	}
+	queue := []node{{startRoomID, 0, 0}}
+	mg.posToRoom[[2]int{0, 0}] = startRoomID
+	mg.roomToPos[startRoomID] = [2]int{0, 0}
+
+	for len(queue) > 0 {
+		n := queue[0]
+		queue = queue[1:]
+
+		room, ok := loadRoom(g, n.roomID)
+		if !ok {
+			continue
+		}
+
+		for _, d := range bfsDirs {
+			targetID, ok := exitTarget(room, d.dir)
+			if !ok {
+				continue
+			}
+			if _, visited := mg.roomToPos[targetID]; visited {
+				continue
+			}
+			nx, ny := n.x + d.dx, n.y + d.dy
+			mg.posToRoom[[2]int{nx, ny}] = targetID
+			mg.roomToPos[targetID] = [2]int{nx, ny}
+			queue = append(queue, node{targetID, nx, ny})
+		}
+	}
+
+	return mg
+}
+
+func buildTinyMap(g *Game, roomID int, mg mapGlyphs) []string {
+	bg := buildGraph(g, roomID)
+
+	grid := make([][]rune, 5)
+	for i := range grid {
+		grid[i] = make([]rune, 5)
+		for j := range grid[i] {
+			grid[i][j] = ' '
+		}
+	}
+
+	for y := -1; y <= 1; y++ {
+		for x := -1; x <= 1; x++ {
+			pos := [2]int{x, y}
+			rid, ok := bg.posToRoom[pos]
+			if !ok {
+				continue
+			}
+			gr := (y + 1) * 2
+			gc := (x + 1) * 2
+			if rid == roomID {
+				grid[gr][gc] = '@'
+			} else {
+				grid[gr][gc] = roomMapSymbol(g, rid)
+			}
+		}
+	}
+
+	for y := -1; y <= 1; y++ {
+		for x := -1; x <= 0; x++ {
+			leftPos := [2]int{x, y}
+			rightPos := [2]int{x + 1, y}
+			leftRoom, leftOK := bg.posToRoom[leftPos]
+			rightRoom, rightOK := bg.posToRoom[rightPos]
+			if !leftOK || !rightOK {
+				continue
+			}
+			if exitsConnect(g, leftRoom, rightRoom, world.East, world.West) {
+				grid[(y+1)*2][(x+1)*2+1] = mg.connectorH
+			}
+		}
+	}
+
+	for y := -1; y <= 0; y++ {
+		for x := -1; x <= 1; x++ {
+			topPos := [2]int{x, y}
+			bottomPos := [2]int{x, y + 1}
+			topRoom, topOK := bg.posToRoom[topPos]
+			bottomRoom, bottomOK := bg.posToRoom[bottomPos]
+			if !topOK || !bottomOK {
+				continue
+			}
+			if exitsConnect(g, topRoom, bottomRoom, world.South, world.North) {
+				grid[(y+1)*2+1][(x+1)*2] = mg.connectorV
+			}
+		}
+	}
+
+	cur, _ := loadRoom(g, roomID)
+	if cur != nil {
+		if _, ok := exitTarget(cur, world.Up); ok {
+			grid[1][3] = mg.upArrow
+		}
+		if _, ok := exitTarget(cur, world.Down); ok {
+			grid[3][1] = mg.downArrow
+		}
+	}
+
+	topFill := strings.Repeat(string(mg.topFill), 5)
+	lines := make([]string, 7)
+	lines[0] = string(mg.topLeft) + topFill + string(mg.topRight)
+	for row := 0; row < 5; row++ {
+		lines[row+1] = string(mg.side) + string(grid[row]) + string(mg.side)
+	}
+	botFill := strings.Repeat(string(mg.topFill), 5)
+	lines[6] = string(mg.bottomLeft) + botFill + string(mg.bottomRight)
+
+	return lines
+}
+
+func exitsConnect(g *Game, room1, room2 int, dir12, dir21 world.ExitDir) bool {
+	r1, ok := loadRoom(g, room1)
+	if !ok {
+		return false
+	}
+	if id, ok := exitTarget(r1, dir12); ok && id == room2 {
+		return true
+	}
+	r2, ok := loadRoom(g, room2)
+	if !ok {
+		return false
+	}
+	id, ok := exitTarget(r2, dir21)
+	return ok && id == room1
+}
+
+func exitTarget(room *world.Room, dir world.ExitDir) (int, bool) {
+	if room == nil {
+		return 0, false
+	}
+	exit, ok := room.Exits[dir]
+	if !ok {
+		return 0, false
+	}
+	return exit.Room, true
+}
+
+func loadRoom(g *Game, roomID int) (*world.Room, bool) {
+	if roomID == 0 {
+		return nil, false
+	}
+	room, err := g.World.LoadRoom(roomID)
+	if err != nil {
+		return nil, false
+	}
+	return room, true
+}
+
+func roomMapSymbol(g *Game, roomID int) rune {
+	room, ok := loadRoom(g, roomID)
+	if !ok {
+		return '?'
+	}
+	if room.MapSymbol != "" {
+		runes := []rune(room.MapSymbol)
+		return runes[0]
+	}
+	return 'o'
+}
+
+func stripBlankRows(lines []string) []string {
+	var out []string
+	for _, line := range lines {
+		if strings.TrimSpace(line) != "" {
+			out = append(out, line)
+		}
+	}
+	return out
+}
+
+func leftTrimCommon(lines []string) []string {
+	min := -1
+	for _, line := range lines {
+		if strings.TrimSpace(line) == "" {
+			continue
+		}
+		n := 0
+		for _, r := range line {
+			if r == ' ' {
+				n++
+			} else {
+				break
+			}
+		}
+		if min < 0 || n < min {
+			min = n
+		}
+	}
+	if min <= 0 {
+		return lines
+	}
+	result := make([]string, len(lines))
+	for i, line := range lines {
+		if len(line) <= min {
+			result[i] = ""
+		} else {
+			result[i] = line[min:]
+		}
+	}
+	return result
+}
+
+func buildFullMap(g *Game, roomID, mapWidth, mapHeight int, mg mapGlyphs) []string {
+	bg := buildGraph(g, roomID)
+
+	grid := make([][]rune, mapHeight)
+	for i := range grid {
+		grid[i] = make([]rune, mapWidth)
+		for j := range grid[i] {
+			grid[i][j] = ' '
+		}
+	}
+
+	cx := mapWidth / 2
+	cy := mapHeight / 2
+
+	for pos, rid := range bg.posToRoom {
+		gr := cy + pos[1]*2
+		gc := cx + pos[0]*2
+		if gr < 0 || gr >= mapHeight || gc < 0 || gc >= mapWidth {
+			continue
+		}
+		if rid == roomID {
+			grid[gr][gc] = '@'
+		} else {
+			grid[gr][gc] = roomMapSymbol(g, rid)
+		}
+	}
+
+	for pos, rid := range bg.posToRoom {
+		x, y := pos[0], pos[1]
+
+		if rightID, ok := bg.posToRoom[[2]int{x + 1, y}]; ok {
+			if exitsConnect(g, rid, rightID, world.East, world.West) {
+				gr := cy + y*2
+				gc := cx + x*2 + 1
+				if gr >= 0 && gr < mapHeight && gc >= 0 && gc < mapWidth {
+					grid[gr][gc] = mg.connectorH
+				}
+			}
+		}
+
+		if bottomID, ok := bg.posToRoom[[2]int{x, y + 1}]; ok {
+			if exitsConnect(g, rid, bottomID, world.South, world.North) {
+				gr := cy + y*2 + 1
+				gc := cx + x*2
+				if gr >= 0 && gr < mapHeight && gc >= 0 && gc < mapWidth {
+					grid[gr][gc] = mg.connectorV
+				}
+			}
+		}
+	}
+
+	lines := make([]string, mapHeight)
+	for i := range grid {
+		lines[i] = string(grid[i])
+	}
+	return lines
+}