From 6da8c2afe5da8ba3fa47d9e0ecaf638f7f44c668 Mon Sep 17 00:00:00 2001
From: Matthew Welch <matt@narnian.us>
Date: Sun, 6 Oct 2024 17:58:26 -0700
Subject: [PATCH] Add signals for when tiles leave the screen

---
 Tiles/Tile.gd             |  6 ++++++
 Tiles/Tile1.tscn          |  6 ++++++
 Tiles/TileRamp1.tscn      |  6 ++++++
 Tiles/TileTurnLeft1.tscn  |  6 ++++++
 Tiles/TileTurnRight1.tscn |  6 ++++++
 tile_generator.gd         | 13 ++++++++++++-
 6 files changed, 42 insertions(+), 1 deletion(-)

diff --git a/Tiles/Tile.gd b/Tiles/Tile.gd
index 23b9157..5691a3d 100644
--- a/Tiles/Tile.gd
+++ b/Tiles/Tile.gd
@@ -1,6 +1,7 @@
 extends Node3D
 class_name Tile
 
+signal left_screen(tile: Tile)
 
 @onready var spawn_point = $SpawnPoint as Marker3D
 
@@ -49,3 +50,8 @@ func get_next_path() -> TilePath:
 	if has_next_path():
 		return paths[path_index+1]
 	return null
+
+
+func _on_screen_exited():
+	if is_equal_approx(follow.progress_ratio, 1) and not has_next_path():
+		left_screen.emit(self)
diff --git a/Tiles/Tile1.tscn b/Tiles/Tile1.tscn
index bdec0dc..0d2ccb2 100644
--- a/Tiles/Tile1.tscn
+++ b/Tiles/Tile1.tscn
@@ -41,3 +41,9 @@ transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, -10)
 
 [node name="MainPath" parent="." instance=ExtResource("2_ij0mq")]
 curve = SubResource("Curve3D_q1142")
+
+[node name="OnScreenNotifier" type="VisibleOnScreenNotifier3D" parent="."]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, -5)
+aabb = AABB(-5, -1, -5, 10, 2, 10)
+
+[connection signal="screen_exited" from="OnScreenNotifier" to="." method="_on_screen_exited"]
diff --git a/Tiles/TileRamp1.tscn b/Tiles/TileRamp1.tscn
index e35910c..5da98c3 100644
--- a/Tiles/TileRamp1.tscn
+++ b/Tiles/TileRamp1.tscn
@@ -41,3 +41,9 @@ transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 4.95971, -8.6685)
 
 [node name="MainPath" parent="." instance=ExtResource("2_66bgp")]
 curve = SubResource("Curve3D_8f65e")
+
+[node name="OnScreenNotifier" type="VisibleOnScreenNotifier3D" parent="."]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 3.38611, -4.31944)
+aabb = AABB(-5, -3.36357, -4.43531, 10, 6.72714, 8.87062)
+
+[connection signal="screen_exited" from="OnScreenNotifier" to="." method="_on_screen_exited"]
diff --git a/Tiles/TileTurnLeft1.tscn b/Tiles/TileTurnLeft1.tscn
index a0faf76..7f9e175 100644
--- a/Tiles/TileTurnLeft1.tscn
+++ b/Tiles/TileTurnLeft1.tscn
@@ -84,3 +84,9 @@ shape = SubResource("BoxShape3D_uvh3q")
 
 [node name="Obstacle" parent="." instance=ExtResource("3_us011")]
 transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, -10.1477)
+
+[node name="OnScreenNotifier" type="VisibleOnScreenNotifier3D" parent="."]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, -5)
+aabb = AABB(-5, -1, -5, 10, 2, 10)
+
+[connection signal="screen_exited" from="OnScreenNotifier" to="." method="_on_screen_exited"]
diff --git a/Tiles/TileTurnRight1.tscn b/Tiles/TileTurnRight1.tscn
index 9faf1b5..27c38eb 100644
--- a/Tiles/TileTurnRight1.tscn
+++ b/Tiles/TileTurnRight1.tscn
@@ -84,3 +84,9 @@ shape = SubResource("BoxShape3D_uvh3q")
 
 [node name="Obstacle" parent="." instance=ExtResource("2_tnkvo")]
 transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, -10.1477)
+
+[node name="OnScreenNotifier" type="VisibleOnScreenNotifier3D" parent="."]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, -5)
+aabb = AABB(-5, -1, -5, 10, 2, 10)
+
+[connection signal="screen_exited" from="OnScreenNotifier" to="." method="_on_screen_exited"]
diff --git a/tile_generator.gd b/tile_generator.gd
index 90ebc91..42795b4 100644
--- a/tile_generator.gd
+++ b/tile_generator.gd
@@ -44,12 +44,15 @@ func start_run(tile_parent: Node) -> void:
 
 func get_current_tiles() -> void:
 	tiles.assign(Utils.get_nodes_of_class(get_tree().root, Tile))
+	for tile in tiles:
+		tile.left_screen.connect(tile_left_screen)
 
 
 func generate_tile() -> Tile:
 	var index = randi_range(0, tile_set.strait_tiles.size()-1)
 	var tile_scene: PackedScene = tile_set.strait_tiles[index]
-	var tile = tile_scene.instantiate()
+	var tile: Tile = tile_scene.instantiate()
+	tile.left_screen.connect(tile_left_screen)
 	return tile
 
 
@@ -68,3 +71,11 @@ func has_next_tile() -> bool:
 
 func get_current_tile() -> Tile:
 	return tiles[tile_index]
+
+
+func tile_left_screen(tile: Tile):
+	var index = tiles.find(tile)
+	tile.queue_free()
+	tiles.remove_at(index)
+	if index < tile_index:
+		tile_index -= 1