Add camera zoom

core/edge_scroll_camera.gd

@@ -1,6 +1,7 @@
 ## Scrolls the camera when the mouse cursor reaches the screen edge.
 ## Attach to a Camera2D node. Requires an OrthographicCamera2D or ViewportContainer
 ## to determine screen bounds at runtime.
+@tool
 extends Camera2D
 
 ## Speed at which the camera scrolls (pixels per second).
@@ -18,6 +19,15 @@ extends Camera2D
 ## Maximum bounds when clamping (in world space).
 @export var clamp_max: Vector2 = Vector2.ZERO
 
+## Zoom sensitivity per mouse wheel tick.
+@export var zoom_sensitivity: float = 0.1
+
+## Minimum zoom level.
+@export var zoom_min: float = 0.25
+
+## Maximum zoom level.
+@export var zoom_max: float = 3.0
+
 var _screen_rect: Rect2
 
 
@@ -29,6 +39,10 @@ func _ready() -> void:
 
 
 func _process(delta: float) -> void:
+	if Engine.is_editor_hint():
+		queue_redraw()
+		return
+
 	if is_zero_approx(scroll_speed):
 		return
 
@@ -58,11 +72,46 @@ func _get_scroll_direction(mouse_pos: Vector2) -> Vector2:
 	return direction.normalized()
 
 
+func _draw() -> void:
+	if not Engine.is_editor_hint():
+		return
+	if not clamp_enabled:
+		return
+
+	var rect_size: Vector2 = clamp_max - clamp_min
+	draw_rect(Rect2(clamp_min, rect_size), Color(1, 0.4, 0, 0.35))
+	draw_rect(Rect2(clamp_min, rect_size), Color(1, 0.6, 0.2, 0.8), false, 2.0)
+
+
 func _clamp_position() -> void:
 	position.x = clampf(position.x, clamp_min.x, clamp_max.x)
 	position.y = clampf(position.y, clamp_min.y, clamp_max.y)
 
 
+func _unhandled_input(event: InputEvent) -> void:
+	if Engine.is_editor_hint():
+		return
+
+	if event is InputEventMouseButton:
+		var mouse_event: InputEventMouseButton = event
+		if mouse_event.button_index == MOUSE_BUTTON_WHEEL_UP:
+			_zoom(zoom_sensitivity, mouse_event.position)
+		elif mouse_event.button_index == MOUSE_BUTTON_WHEEL_DOWN:
+			_zoom(-zoom_sensitivity, mouse_event.position)
+
+
+func _zoom(change: float, mouse_pos: Vector2) -> void:
+	var new_zoom_value: float = clampf(zoom.x + change, zoom_min, zoom_max)
+	if is_equal_approx(new_zoom_value, zoom.x):
+		return
+
+	var viewport_center: Vector2 = get_viewport_rect().size / 2.0
+	var offset: Vector2 = mouse_pos - viewport_center
+	var world_point: Vector2 = position + offset / zoom
+	zoom = Vector2(new_zoom_value, new_zoom_value)
+	position = world_point - offset / zoom
+
+
 func _update_screen_rect() -> void:
 	var viewport: Viewport = get_viewport()
 	if viewport != null:

docs/gyms/tiny_sword/buildings/alchemy_tower/alchemy_tower.gd

@@ -3,21 +3,19 @@ extends Node2D
 
 ## Emitted when production progress changes (0.0 to 1.0)
 signal production_progress_updated(progress: float)
-
 ## Emitted when magic gold balance changes
 signal magic_gold_balance_updated(amount: BigNumber)
-
 ## Emitted when a production cycle completes
 signal production_completed(amount: BigNumber)
 
 ## Configuration data for this tower
 @export var data: AlchemyTowerData
-
 ## Available craft recipes
 @export var craft_recipes: AlchemyCraftCatalogue
 
 ## Reference to game state
 @onready var game_state: LevelGameState = find_parent("LevelGameState")
+@onready var _alchemy_currencies_panel: AlchemyCurrenciesPanel = $AlchemyCurrenciesPanel
 
 ## Current production state
 var production_time_elapsed: float = 0.0
@@ -194,3 +192,11 @@ func _on_craft_requested(recipe: Variant) -> void:
 	var success: bool = craft_item(recipe)
 	if not success:
 		push_warning("AlchemyTower: Failed to craft %s - insufficient funds" % recipe.output_currency.display_name)
+
+
+func _on_area_2d_mouse_entered() -> void:
+	_alchemy_currencies_panel.visible = true
+
+
+func _on_area_2d_mouse_exited() -> void:
+	_alchemy_currencies_panel.visible = false

docs/gyms/tiny_sword/buildings/alchemy_tower/alchemy_tower.tscn

@@ -25,9 +25,13 @@ position = Vector2(0.5, 11)
 shape = SubResource("RectangleShape2D_8pntr")
 
 [node name="AlchemyCurrenciesPanel" parent="." unique_id=731368154 instance=ExtResource("2_8pntr")]
+visible = false
 offset_left = 65.0
 offset_top = -75.0
 offset_right = 65.0
 offset_bottom = -75.0
 currency = ExtResource("7_b8p5n")
 craft_recipes = ExtResource("5_recipes")
+
+[connection signal="mouse_entered" from="Area2D" to="." method="_on_area_2d_mouse_entered"]
+[connection signal="mouse_exited" from="Area2D" to="." method="_on_area_2d_mouse_exited"]

docs/gyms/tiny_sword/tiny_sword.tscn

@@ -90,5 +90,12 @@ position = Vector2(105, 920)
 position = Vector2(1239, 775)
 
 [node name="Camera2D" type="Camera2D" parent="." unique_id=1494908331]
+position = Vector2(5, 0)
 offset = Vector2(960, 540)
 script = ExtResource("17_x77df")
+clamp_enabled = true
+clamp_min = Vector2(-1920, -1080)
+clamp_max = Vector2(1920, 1080)
+zoom_sensitivity = null
+zoom_min = null
+zoom_max = null

docs/museums/edge_scroll_camera.tscn

@@ -6,8 +6,37 @@
 [node name="EdgeScrollCamera" type="Node2D" unique_id=1977543223]
 
 [node name="Camera2D" type="Camera2D" parent="." unique_id=455629291]
+offset = Vector2(960, 540)
 script = ExtResource("1_08uhj")
+clamp_enabled = true
+clamp_max = Vector2(3000, 2000)
 
 [node name="Icon" type="Sprite2D" parent="." unique_id=629901180]
-position = Vector2(469, 252)
+position = Vector2(988, 485)
+texture = ExtResource("2_c5cli")
+
+[node name="Icon2" type="Sprite2D" parent="." unique_id=919808260]
+position = Vector2(1714, 130)
+texture = ExtResource("2_c5cli")
+
+[node name="Icon3" type="Sprite2D" parent="." unique_id=368045162]
+position = Vector2(1750, 957)
+texture = ExtResource("2_c5cli")
+
+[node name="Icon6" type="Sprite2D" parent="." unique_id=1755994416]
+position = Vector2(2641, 1655)
+rotation = 0.9242716
+texture = ExtResource("2_c5cli")
+
+[node name="Icon7" type="Sprite2D" parent="." unique_id=460486605]
+position = Vector2(895.00024, 1641)
+rotation = 0.9242716
+texture = ExtResource("2_c5cli")
+
+[node name="Icon4" type="Sprite2D" parent="." unique_id=957351194]
+position = Vector2(134, 962)
+texture = ExtResource("2_c5cli")
+
+[node name="Icon5" type="Sprite2D" parent="." unique_id=2077463270]
+position = Vector2(137, 129)
 texture = ExtResource("2_c5cli")