Balatro Card Hover

It was ported by chatgpt and fixed by me, I cant take credit for it.

It’s ripped from the source code of balatro

It does work with animated Sprite2Ds

IT REQUIRES A SCRIPT TO WORK look in screenshots to see how you need to put this for it to work
it is for the main menu card so you’re alone on this one 😅

extends Button

var TIME = 0
var value = 2000
var mousepos = Vector2(0,0)
var bla = 0
var blaa = 0
@export var normal : Marker2D
@export var enabled : bool = true
var veldir = Vector2(0,0)
var oldpos = Vector2(0,0)
var veldir2 = Vector2(0,0)
var oldpos2 = Vector2(0,0)
func _input(event: InputEvent) -> void:
	if event is InputEventMouseMotion and enabled:
		mousepos = event.position - (Vector2(140,186)/2)
		veldir = clamp(event.velocity/4000,Vector2(-0.3,-0.3),Vector2(0.3,0.3))
	if event is InputEventMouseButton and enabled:
		if event.button_index == 1 and event.pressed == false:
			bla = 0

func _process(delta: float) -> void:
	if enabled:
		self.visible = true
		TIME += 1*delta
		if bla == 1:
			self.position = lerp(self.position,mousepos,0.25)
			self.rotation += clamp(veldir.x,-0.3,0.3)
			self.rotation *= 0.8
			self.scale = lerp(self.scale,Vector2(1.05,1.05),0.25)
			oldpos = mousepos
			veldir *= 0 
		else:
			self.position = lerp(self.position,normal.position,0.25)
			veldir2 = (self.position-oldpos2)*0.01532
			oldpos2 = self.position
			self.rotation += clamp(veldir2.x,-0.3,0.25)
			self.rotation *= 0.8
			veldir2 = (self.position-oldpos2)*0.01532
			self.rotation += sin(TIME+1321)*(0.003625/2)
			self.position.x += cos(TIME+180+1321)*(0.875/2)
			self.position.y += sin(TIME+360+1231)*(0.875/2)
			var material = $Chip.material
			if is_cursor_touching() and enabled:
				if material:
					blaa = 1
					self.scale = lerp(self.scale,Vector2(1.05,1.05),0.25)
					material.set_shader_parameter("hovering", 1)
					material.set_shader_parameter("mouse_screen_pos", Vector2(clampf((get_global_mouse_position()-(self.position+self.size/2)).x*2,-value,value),clampf((get_global_mouse_position()-(self.position+self.size/2)).y*2,-value,value)))
			else:
				if material:
					self.scale = lerp(self.scale,Vector2(1,1),0.25)
					material.set_shader_parameter("hovering", 0)
					blaa = 0
			$Chip/Suit.material = material
	else:
		self.position = normal.position
		self.rotation = 0
		self.visible = false

func _on_button_down() -> void:
	bla = 1

# Returns true if the cursor is touching the sprite.
func is_cursor_touching() -> bool:
	# Get the mouse position in global coordinates.
	var mouse_pos: Vector2 = get_global_mouse_position()
	var start = self.position
	var end = self.position + self.size
	var starty = mouse_pos.x >= start.x and mouse_pos.y >= start.y
	var endy = mouse_pos.x <= end.x and mouse_pos.y <= end.y
	return starty and endy

Shader code

shader_type canvas_item;

uniform vec2 mouse_screen_pos;
uniform float hovering;
uniform float screen_scale = 1.0;

void vertex() {
    
    vec2 screen_size = vec2(1.0,1.0);
    float mid_dist = length(VERTEX.xy - 0.5 * screen_size) / length(screen_size);
    vec2 mouse_offset = (VERTEX.xy + mouse_screen_pos.xy) / screen_scale;
    float scale = 0.2 * (-0.03 - 0.3 * max(0.0, 0.3 - mid_dist)) * 
                  hovering * (length(mouse_offset) * length(mouse_offset)) / (2.0 - mid_dist);
    
    VERTEX += scale;
}

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