add cursor_manager and cursor_click image

assets/textures/gui/cursor_click.png.import

@@ -0,0 +1,34 @@
+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://bhfdgwwogwo2l"
+path="res://.godot/imported/cursor_click.png-33dc5b0de3732bfe684b0a9b2516f551.ctex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://assets/textures/gui/cursor_click.png"
+dest_files=["res://.godot/imported/cursor_click.png-33dc5b0de3732bfe684b0a9b2516f551.ctex"]
+
+[params]
+
+compress/mode=0
+compress/high_quality=false
+compress/lossy_quality=0.7
+compress/hdr_compression=1
+compress/normal_map=0
+compress/channel_pack=0
+mipmaps/generate=false
+mipmaps/limit=-1
+roughness/mode=0
+roughness/src_normal=""
+process/fix_alpha_border=true
+process/premult_alpha=false
+process/normal_map_invert_y=false
+process/hdr_as_srgb=false
+process/hdr_clamp_exposure=false
+process/size_limit=0
+detect_3d/compress_to=1

project.godot

@@ -18,6 +18,10 @@ boot_splash/bg_color=Color(0, 0, 0, 1)
 boot_splash/show_image=false
 config/icon="res://icon.svg"
 
+[autoload]
+
+CursorManager="*res://scripts/globals/cursor_manager.gd"
+
 [debug]
 
 settings/crash_handler/message="Oh my, there's a BUG in the game! How queer and unexpected!"

scripts/globals/cursor_manager.gd

@@ -0,0 +1,19 @@
+extends Node
+
+const CURSOR_HOTSPOT = Vector2(32, 32)
+
+var cursor_normal := load("res://assets/textures/gui/cursor.png")
+var cursor_click := load("res://assets/textures/gui/cursor_click.png")
+
+func _ready() -> void:
+	Input.mouse_mode = Input.MOUSE_MODE_CONFINED
+
+func _input(event: InputEvent) -> void:
+	if event is InputEventMouseButton:
+		if (event as InputEventMouseButton).pressed:
+			set_cursor(cursor_click)
+		else:
+			set_cursor(cursor_normal)
+
+func set_cursor(image: Resource) -> void:
+	Input.set_custom_mouse_cursor(image, Input.CURSOR_ARROW, CURSOR_HOTSPOT)