progressively increase game speed

mini-game/MiniGame.gd

@@ -8,7 +8,8 @@ onready var player := $player
 onready var scoreUI := $scoreUI
 onready var start_timer_UI := $startTimerUI
 onready var instructionsUI := $instructionsUI
-onready var timer := $Timer
+onready var score_timer := $ScoreTimer
+onready var speed_timer := $SpeedTimer
 
 var next_timeline_lose := ""
 var next_timeline_win := ""
@@ -21,6 +22,10 @@ var game_version = 0
 
 var MUSIC = "res://music/mini_jeu.ogg"
 
+var game_speed = 0 setget set_game_speed
+
+export var speed_increments := 0.1
+export var max_speed := 8
 
 func _ready():
 	pass
@@ -30,11 +35,14 @@ func setup(mode: String, goal: int, difficulty: String, next_lose: String, next_
 	game_goal = goal
 	if(difficulty == "hard"):
 		game_difficulty = "hard"
+		game_speed = 2
 	else:
 		game_difficulty = "easy"
 	game_version = version
 	print("setup minigame: " + mode + " " + next_lose + " " + next_win)
 	set_mode(mode)
+	foreground.init(game_speed)
+	spawner.init(game_speed)
 	scoreUI.init(mode, goal)
 	next_timeline_lose = next_lose
 	next_timeline_win = next_win
@@ -75,14 +83,16 @@ func start():
 		scoreUI.start(game_goal)
 	t.queue_free()
 	if game_mode == "time":
-		timer.start()
+		score_timer.start()
+	speed_timer.start()
 
 
 func stop():
 	foreground.stop()
 	player.stop()
 	spawner.stop()
-	timer.stop()
+	score_timer.stop()
+	speed_timer.stop()
 
 
 func on_win():
@@ -102,6 +112,7 @@ func _on_player_die() -> void:
 func _on_player_hit() -> void:
 	pass
 
+
 func update_score():
 	current_goal += 1
 	scoreUI.update_score(current_goal)
@@ -109,9 +120,21 @@ func update_score():
 		on_win()
 
 
+func set_game_speed(new_value: float):
+	game_speed = new_value
+	if game_speed > max_speed:
+		game_speed = max_speed
+	foreground.speed_offset = game_speed
+	spawner.speed_offset = game_speed
+
+
 func _on_player_score() -> void:
 	update_score()
 
 
-func _on_Timer_timeout() -> void:
+func _on_ScoreTimer_timeout() -> void:
 	update_score()
+
+
+func _on_SpeedTimer_timeout() -> void:
+	set_game_speed(game_speed + speed_increments)

mini-game/MiniGame.tscn

@@ -28,9 +28,12 @@ position = Vector2( 183.674, 888.367 )
 
 [node name="instructionsUI" parent="." instance=ExtResource( 8 )]
 
-[node name="Timer" type="Timer" parent="."]
+[node name="ScoreTimer" type="Timer" parent="."]
+
+[node name="SpeedTimer" type="Timer" parent="."]
 
 [connection signal="die" from="player" to="." method="_on_player_die"]
 [connection signal="hit" from="player" to="." method="_on_player_hit"]
 [connection signal="score" from="player" to="." method="_on_player_score"]
-[connection signal="timeout" from="Timer" to="." method="_on_Timer_timeout"]
+[connection signal="timeout" from="ScoreTimer" to="." method="_on_ScoreTimer_timeout"]
+[connection signal="timeout" from="SpeedTimer" to="." method="_on_SpeedTimer_timeout"]

mini-game/scenes/decor/ForegroundSprite.gd

@@ -2,6 +2,7 @@ extends Sprite
 
 export var scroll_speed = 9
 
+var speed_offset : float = 0
 var moving = false
 
 signal viewport_entered(object)
@@ -22,7 +23,7 @@ func _physics_process(delta):
 
 
 func move():
-	position.x -= scroll_speed
+	position.x -= scroll_speed + speed_offset
 
 
 func _on_VisibilityNotifier2D_viewport_entered(viewport: Viewport) -> void:

mini-game/scenes/decor/foreground.gd

@@ -5,11 +5,23 @@ var sprite_scene = preload("res://mini-game/scenes/decor/ForegroundSprite.tscn")
 var textures := []
 var moving := false
 
+var speed_offset : float = 0 setget set_speed_offset
+
 func _ready():
 	textures.append($ForegroundSprite)
 	stop()
 
 
+func init(speed: float):
+	set_speed_offset(speed)
+
+
+func set_speed_offset(new_value: float):
+	speed_offset = new_value
+	for t in textures:
+		t.speed_offset = speed_offset
+
+
 func stop():
 	moving = false
 	for t in textures:
@@ -25,6 +37,7 @@ func start():
 func _on_ForegroundSprite_viewport_entered(object: Sprite) -> void:
 	var new_sprite = sprite_scene.instance()
 	new_sprite.position = Vector2(1920, 0)
+	new_sprite.speed_offset = speed_offset
 	new_sprite.connect("viewport_entered", self, "_on_ForegroundSprite_viewport_entered")
 	new_sprite.connect("viewport_exited", self, "_on_ForegroundSprite_viewport_exited")
 	if moving:

mini-game/scenes/spawner/pickup.gd

@@ -3,6 +3,7 @@ extends Node2D
 export var sprite_texture : Texture
 export var type := "bonus" setget , get_type
 export var scroll_speed = 9
+var speed_offset : float = 0
 
 onready var sprite = $Sprite
 onready var audio_stream = $AudioStreamPlayer
@@ -32,7 +33,7 @@ func get_type():
 
 
 func move():
-	self.position.x -= scroll_speed
+	self.position.x -= scroll_speed + speed_offset
 
 
 func pickup():

mini-game/scenes/spawner/spawner.gd

@@ -9,11 +9,22 @@ var end_of_game = false
 var timer_speed = 0.99
 var random_threshold = 50
 var scenes_offset = 0
+var speed_offset : float = 0 setget set_speed_offset
 
 onready var timer := $Timer
 onready var items := $items
 
 
+func init(speed: float):
+	set_speed_offset(speed)
+
+
+func set_speed_offset(new_value: float):
+	speed_offset = new_value
+	for obj in items.get_children():
+		obj.speed_offset = speed_offset
+
+
 func _on_Timer_timeout():
 	random_scene.randomize()
 	scene_index = random_scene.randi_range(1,100)
@@ -22,6 +33,7 @@ func _on_Timer_timeout():
 	else:
 		scene_index = 0
 	var tmp = scenes[scene_index+scenes_offset*2].instance()
+	tmp.speed_offset = speed_offset
 	items.add_child(tmp)
 	last_object = tmp
 	if(timer.wait_time <= 1):
@@ -46,6 +58,6 @@ func start(difficulty, version):
 
 func stop():
 	timer.stop()
-	for obj in $items.get_children():
+	for obj in items.get_children():
 		remove_child(obj)
 		obj.queue_free()