Setup background and scrolling stuff

main_game_camera.gd

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+extends Camera2D
+
+# --- Movement Settings ---
+@export var KEYBOARD_SPEED: float = 500.0  # Pixels per second using keys
+@export var EDGE_SPEED: float = 600.0      # Pixels per second using mouse edge
+@export var EDGE_MARGIN: float = 20.0      # How close to the screen edge (in pixels) to trigger scroll
+
+# --- Zoom Settings ---
+@export var MIN_ZOOM: float = 0.5          # Furthest zoomed out
+@export var MAX_ZOOM: float = 3.0          # Closest zoomed in
+@export var ZOOM_SPEED: float = 0.1        # How fast it zooms per scroll tick
+var target_zoom: float = 1.0               # Smoothly interpolate to this value
+
+func _ready() -> void:
+	# Ensures the camera uses its actual starting zoom
+	target_zoom = zoom.x
+
+func _process(delta: float) -> void:
+	handle_keyboard_movement(delta)
+	handle_edge_scrolling(delta)
+	handle_smooth_zoom(delta)
+
+# 1. ARROW KEYS / WASD MOVEMENT
+func handle_keyboard_movement(delta: float) -> void:
+	var velocity = Vector2.ZERO
+	
+	if Input.is_key_pressed(KEY_LEFT) or Input.is_key_pressed(KEY_A):
+		velocity.x -= 1
+	if Input.is_key_pressed(KEY_RIGHT) or Input.is_key_pressed(KEY_D):
+		velocity.x += 1
+	if Input.is_key_pressed(KEY_UP) or Input.is_key_pressed(KEY_W):
+		velocity.y -= 1
+	if Input.is_key_pressed(KEY_DOWN) or Input.is_key_pressed(KEY_S):
+		velocity.y += 1
+		
+	# Move the camera based on direction, speed, and time passed
+	global_position += velocity.normalized() * KEYBOARD_SPEED * delta
+
+# 2. MOUSE EDGE SCROLLING
+func handle_edge_scrolling(delta: float) -> void:
+	var mouse_pos = get_viewport().get_mouse_position()
+	var window_size = get_viewport().get_visible_rect().size
+	var velocity = Vector2.ZERO
+
+	# Check Left/Right edges
+	if mouse_pos.x < EDGE_MARGIN:
+		velocity.x -= 1
+	elif mouse_pos.x > window_size.x - EDGE_MARGIN:
+		velocity.x += 1
+
+	# Check Top/Bottom edges
+	if mouse_pos.y < EDGE_MARGIN:
+		velocity.y -= 1
+	elif mouse_pos.y > window_size.y - EDGE_MARGIN:
+		velocity.y += 1
+
+	global_position += velocity.normalized() * EDGE_SPEED * delta
+
+# 3. MOUSE WHEEL ZOOM (Detecting the inputs)
+func _unhandled_input(event: InputEvent) -> void:
+	if event is InputEventMouseButton:
+		if event.button_index == MOUSE_BUTTON_WHEEL_UP and event.pressed:
+			target_zoom = clamp(target_zoom + ZOOM_SPEED, MIN_ZOOM, MAX_ZOOM)
+		elif event.button_index == MOUSE_BUTTON_WHEEL_DOWN and event.pressed:
+			target_zoom = clamp(target_zoom - ZOOM_SPEED, MIN_ZOOM, MAX_ZOOM)
+
+# 4. SMOOTH ZOOMING ANIMATION
+func handle_smooth_zoom(delta: float) -> void:
+	# Lerp smoothly transitions the current zoom to our target_zoom over time
+	var current_zoom = zoom.x
+	var new_zoom = lerp(current_zoom, target_zoom, 10.0 * delta)
+	zoom = Vector2(new_zoom, new_zoom)