Доработка. Добавить индикацию перемещения карты к краю.

scenes/tilemap/tilemap.gd

@@ -13,7 +13,7 @@ class_name MercatorTileMap
             _clean_all()
             queue_redraw()
 
-@export var zoom_step: float = 0.025
+@export var zoom_step: float = 0.1
 @export var tile_width: float = 256.0
 @export var tile_height: float = 256.0
 @export_range(1, 1000, 1) var max_concurrent_requests:int = 5
@@ -79,7 +79,7 @@ var image_load_proc: Callable
 var now: = 0
 var visible_marks_count: = 0
 var map_server_available: = false
-
+var border: ImageTexture
 
 ## Вызывается после того, как загрузка плиток завершена
 signal load_completed()
@@ -111,6 +111,13 @@ func get_marks_count(): return _marks.size()
 
 
 func _ready() -> void:
+    var img: = Image.create($canvas.size.x, $canvas.size.y / 10, false, Image.FORMAT_RGBA8)
+    var sz = img.get_size()
+    for x in sz.x:
+        for y in sz.y:
+            img.set_pixel(x, y, Color.CORAL)
+    border = ImageTexture.create_from_image(img)
+
     _xyz.z = min_zoom_level
     image_type = 'png'
     $canvas.connect('mouse_entered', func(): _rollover = true)
@@ -190,6 +197,7 @@ func is_mark_visible(dot) -> bool:
 func _input(e) -> void:
     var lmp = get_local_mouse_position()
     if not _rollover:
+        _dragging = false
         return
     if e is InputEventMouseButton:
         if e.pressed:
@@ -250,6 +258,7 @@ func set_zoom(zoom: float, pivot: Vector2) -> void:
 
 
 func _draw() -> void:
+    # Рисование плиток
     var z = min(max_zoom_level, _xyz.z)
     var t1 = screen_to_tile(Vector2(0, 0), z)
     var t2 = screen_to_tile($canvas.size, z) + Vector2(1, 1)
@@ -258,6 +267,7 @@ func _draw() -> void:
     for tx in range(t1.x, t2.x):
         for ty in range(t1.y, t2.y):
             _draw_tile(tx, ty, z)
+    # Рисование отметок
     var n = pow(2, z)
     var dx = n * tile_width
     var c: Vector2 = $canvas.size / 2.0
@@ -269,6 +279,14 @@ func _draw() -> void:
         dot.mark.position = scr_pos
         dot.mark.visible = c.distance_to(scr_pos) < (r - dot.gap_size)
         visible_marks_count += int(dot.mark.visible)
+    # Рисование границ
+    var p1 = $canvas.position
+    var p2 = $canvas.size / Vector2(1, 20)
+    if is_out_border1 and _dragging:
+        draw_texture_rect(border, Rect2(p1, p2), false, Color.WHITE, false)
+    p1.y = p1.y + $canvas.size.y - p2.y
+    if is_out_border2 and _dragging:
+        draw_texture_rect(border, Rect2(p1, p2), false, Color.WHITE, false)
 
 
 func _clean_all() -> void:
@@ -398,18 +416,18 @@ func check_borders(p1, p2, h):
 
 
 func _draw_tile(tx: int, ty: int, z: float) -> void:
-    var tz = floor(z)
-    var p1 = tile_to_screen(tx, ty, z)
-    var p2 = tile_to_screen(tx + 1, ty + 1, z)
-    var tile = get_tile(tx, ty, tz)
+    var tz: float = floor(z)
+    var p1: = tile_to_screen(tx, ty, z)
+    var p2: = tile_to_screen(tx + 1, ty + 1, z)
+    var tile: = get_tile(tx, ty, tz)
     if tile:
         if tile.texture:
             check_borders(p1, p2, $canvas.size.y)
             draw_texture_rect(tile.texture, Rect2(p1, p2 - p1), false, Color.WHITE, false)
         else:
-            var zzz = tz
-            var txx = tx
-            var tyy = ty
+            var zzz: float = tz
+            var txx: = tx
+            var tyy: = ty
             while zzz > 1:
                 zzz -= 1
                 txx = floor(txx / 2.0)