Add project files

player/player.gd

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+extends CharacterBody2D
+
+
+@export var movement_speed = 300.0
+@export var jump_velocity = -350.0
+@export var max_jumps: int = 2
+
+@onready var ceiling_raycast1 = $RayCastUp1
+@onready var ceiling_raycast2 = $RayCastUp2
+
+var jumps = 0
+
+func _physics_process(delta: float) -> void:
+	var dir = Input.get_axis("player_left", "player_right")
+	var on_floor = is_on_floor()
+	var on_wall = is_on_wall()
+	var on_ceiling = ceiling_raycast1.is_colliding() or ceiling_raycast2.is_colliding()
+	# left right movement
+	if dir:
+		velocity.x = dir * movement_speed
+	else:
+		velocity.x = move_toward(velocity.x, 0, movement_speed)
+	# gravity
+	if not (on_floor or on_ceiling):
+		velocity += get_gravity() * delta
+	# reset number of jumps
+	if on_ceiling or on_floor or on_wall:
+		jumps = 0
+	# jumping / dropping from ceiling
+	if Input.is_action_just_pressed("player_jump"):
+		if on_ceiling: # drop from ceiling
+			velocity += get_gravity() * delta
+		elif jumps < max_jumps: # (allows air jumps)
+			velocity.y = jump_velocity
+			jumps += 1
+	move_and_slide()

player/player.tscn

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+[gd_scene load_steps=3 format=3 uid="uid://ebb4pfxklatj"]
+
+[ext_resource type="Script" path="res://player/player.gd" id="1_fob34"]
+
+[sub_resource type="RectangleShape2D" id="RectangleShape2D_7cq61"]
+size = Vector2(16, 16)
+
+[node name="Player" type="CharacterBody2D"]
+floor_block_on_wall = false
+script = ExtResource("1_fob34")
+
+[node name="Camera2D" type="Camera2D" parent="."]
+position_smoothing_enabled = true
+drag_horizontal_enabled = true
+drag_vertical_enabled = true
+
+[node name="CollisionShape2D" type="CollisionShape2D" parent="."]
+shape = SubResource("RectangleShape2D_7cq61")
+
+[node name="RayCastUp1" type="RayCast2D" parent="."]
+position = Vector2(-4, 0)
+target_position = Vector2(0, -8.1)
+
+[node name="RayCastUp2" type="RayCast2D" parent="."]
+position = Vector2(4, 0)
+target_position = Vector2(0, -8.1)
+
+[node name="Polygon2D" type="Polygon2D" parent="."]
+polygon = PackedVector2Array(-7, -7, -7, 7, 7, 7, 7, -7)