screen_shake: trembler l'écran quand:

- on tremble depuis longtemps
- onse paye un mur en dashant (ou le plafond)

ShakingCamera2D.gd

@@ -0,0 +1,48 @@
+class_name ShakingCamera extends Camera2D
+
+
+@export var decay = 0.8  # How quickly the shaking stops [0, 1].
+@export var max_offset = Vector2(100, 75)  # Maximum hor/ver shake in pixels.
+@export var max_roll = 0.1  # Maximum rotation in radians (use sparingly).
+@export var target = NodePath()
+@onready var noise = FastNoiseLite.new()
+
+var noise_y = 0
+
+var traumax = 0.0  # Current shake strength.
+var traumay = 0.0  # Current shake strength.
+var trauma_power = 2  # Trauma exponent. Use [2, 3].
+
+func _ready():
+    randomize()
+    noise.noise_type = FastNoiseLite.TYPE_PERLIN
+    noise.seed = 0982309586286872365
+
+func add_trauma(amount):
+    traumax = min(traumax + amount, 1.0)
+    traumay = min(traumay + amount, 1.0)
+func add_trauma_x(amount):
+    traumax = min(traumax + amount, 1.0)
+func add_trauma_y(amount):
+    traumay = min(traumay + amount, 1.0)
+
+func _process(delta):
+    if target:
+        global_position = get_node(target).global_position
+    var goshake = traumax or traumay
+    if traumax:
+        traumax = max(traumax - decay * delta, 0)
+    if traumay:
+        traumay = max(traumay - decay * delta, 0)
+    if goshake:
+        shake()
+
+func shake():
+    noise_y += 1
+    var amountx = pow(traumax, trauma_power)
+    var amounty = pow(traumay, trauma_power)
+    if traumax:
+        rotation = max_roll * amountx * noise.get_noise_2d(noise.seed, noise_y)
+        offset.x = max_offset.x * amountx * noise.get_noise_2d(noise.seed*2, noise_y)
+    if traumay:
+        offset.y = max_offset.y * amounty * noise.get_noise_2d(noise.seed*3, noise_y)