Added player character and initial interaction functionality

scripts/player.gd

@@ -0,0 +1,27 @@
+extends CharacterBody2D
+class_name Player
+
+@export var SPEED := 4
+
+var last_direction = 0
+var interaction_location: Vector2i
+
+@onready var animation_player: AnimationPlayer = $AnimationPlayer
+
+func _physics_process(delta: float) -> void:
+	var input_direction := Input.get_vector("ui_left", "ui_right", "ui_up", "ui_down")
+	velocity = input_direction * SPEED / delta
+	move_and_slide()
+	
+	if input_direction:
+		animation_player.play()
+		last_direction = input_direction.angle() + 3 * PI / 2
+		rotation = last_direction
+		interaction_location = Grid.world_to_grid(position) + Vector2i(input_direction.round())
+		Grid.set_selected_tile(interaction_location)
+	else:
+		animation_player.stop()
+
+func _input(event: InputEvent) -> void:
+	if event.is_action_pressed("ui_accept"):
+		print("Interacted with: %s" % Grid.get_location_data(interaction_location))