feat: courses gui overhaul, add course tab to map, add hidden exits to give courses structure

1 files changed, 45 insertions, 2 deletions

diff --git a/internal/game/render_map.go b/internal/game/render_map.go
index 179277a..1bc9adc 100644
--- a/internal/game/render_map.go
+++ b/internal/game/render_map.go
@@ -95,7 +95,7 @@ func buildTinyMap(g *Game, sess *net.Session, roomID int, mg mapGlyphs) []string
 	dimSpec := resolveDim(g, sess)
 	ctx := &mapRenderCtx{
 		g: g, sess: sess, bg: bg, visited: visited, currentRoom: roomID,
-		atSpec: atSpec, dimSpec: dimSpec, blockedSpec: resolveMapBlocked(g, sess), mg: mg,
+		atSpec: atSpec, dimSpec: dimSpec, blockedSpec: resolveMapBlocked(g, sess), courseSpec: resolveMapCourse(g, sess), mg: mg,
 		diagPairs: make(map[[2]int][2]int),
 	}
 
@@ -268,7 +268,7 @@ func buildFullMap(g *Game, sess *net.Session, roomID, mapWidth, mapHeight int, m
 	dimSpec := resolveDim(g, sess)
 	ctx := &mapRenderCtx{
 		g: g, sess: sess, bg: bg, visited: visited, currentRoom: roomID,
-		atSpec: atSpec, dimSpec: dimSpec, blockedSpec: resolveMapBlocked(g, sess), mg: mg,
+		atSpec: atSpec, dimSpec: dimSpec, blockedSpec: resolveMapBlocked(g, sess), courseSpec: resolveMapCourse(g, sess), mg: mg,
 		diagPairs: make(map[[2]int][2]int),
 	}
 
@@ -433,6 +433,13 @@ func resolveMapBlocked(g *Game, sess *net.Session) color.ColorSpec {
 	return color.Parse("C4")
 }
 
+func resolveMapCourse(g *Game, sess *net.Session) color.ColorSpec {
+	if sess != nil {
+		return g.resolveColor(sess, "map_course")
+	}
+	return color.Parse("1B")
+}
+
 // mapRenderCtx bundles the per-render state shared by node and connector drawing
 // so the tiny and full maps build cells the same way.
 type mapRenderCtx struct {
@@ -444,6 +451,7 @@ type mapRenderCtx struct {
 	atSpec      color.ColorSpec
 	dimSpec     color.ColorSpec
 	blockedSpec color.ColorSpec
+	courseSpec  color.ColorSpec
 	mg          mapGlyphs
 	diagPairs   map[[2]int][2]int
 }
@@ -497,14 +505,44 @@ func (c *mapRenderCtx) connectorCell(roomA, roomB int, dirAB, dirBA world.ExitDi
 
 	switch {
 	case out == exitOpen:
+		if c.isCourseLink(roomA, roomB) {
+			return c.courseColoredCell(roomA, roomB, arrowGlyph(c.mg, outDir))
+		}
 		return c.coloredCell(roomA, roomB, arrowGlyph(c.mg, outDir))
 	case out == exitAbsent && in == exitOpen:
+		if c.isCourseLink(roomA, roomB) {
+			return c.courseColoredCell(roomA, roomB, arrowGlyph(c.mg, inDir))
+		}
 		return c.coloredCell(roomA, roomB, arrowGlyph(c.mg, inDir))
 	default:
 		return mapCell{char: 'X', spec: c.blockedSpec}, true
 	}
 }
 
+// isCourseLink reports whether roomA and roomB are consecutive obstacles in
+// the same agility course (one's NextRoom equals the other's room id).
+func (c *mapRenderCtx) isCourseLink(roomA, roomB int) bool {
+	if c.g == nil || c.g.CourseStore == nil {
+		return false
+	}
+	if info := c.g.CourseStore.GetObstacle(roomA); info != nil && info.NextRoom == roomB {
+		return true
+	}
+	if info := c.g.CourseStore.GetObstacle(roomB); info != nil && info.NextRoom == roomA {
+		return true
+	}
+	return false
+}
+
+// courseColoredCell draws a one-way course arrow using the map_course color
+// (dimmed if either endpoint is unvisited).
+func (c *mapRenderCtx) courseColoredCell(roomA, roomB int, glyph rune) (mapCell, bool) {
+	if c.visited != nil && (!c.visited[roomA] || !c.visited[roomB]) {
+		return mapCell{char: glyph, spec: c.dimSpec}, true
+	}
+	return mapCell{char: glyph, spec: c.courseSpec}, true
+}
+
 // coloredCell applies the shared link coloring logic for bar/arrow glyphs
 // (dim if either endpoint is unvisited, otherwise the gradient average).
 func (c *mapRenderCtx) coloredCell(roomA, roomB int, glyph rune) (mapCell, bool) {
@@ -564,6 +602,11 @@ func exitStateTo(g *Game, sess *net.Session, from int, dir world.ExitDir, neighb
 	if !ok || exit.Room != neighbor {
 		return exitAbsent
 	}
+	// Hidden exits are non-traversable to players but are followed by the map
+	// layout BFS, so they always render as traversable (open) connectors.
+	if exit.Hidden {
+		return exitOpen
+	}
 	if exit.Condition == nil || sess == nil || sess.Player == nil {
 		return exitOpen
 	}