110 lines
2.9 KiB
GDScript
110 lines
2.9 KiB
GDScript
extends Control
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@onready var button_next := %Next
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@onready var button_previous := %Previous
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@onready var content := %Content
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@onready var frame := %Frame
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var current_index := 0
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var duration := 0.5
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func _ready() -> void:
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_initialize()
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func _initialize() -> void:
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button_next.pressed.connect(_cycle_next)
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button_previous.pressed.connect(_cycle_previous)
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# move all slides off screen and fit to content frame (if not ignoring sizes)
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_content_fit_size()
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_content_reset_positions()
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var initial_slide := content.get_child(0)
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initial_slide.set_position(content.get_position())
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func _content_fit_size() -> void:
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for slide in content.get_children():
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slide.set_size(content.get_size())
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func _content_reset_positions() -> void:
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for slide in content.get_children():
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slide.set_position(
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Vector2(
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frame.get_position().x - slide.get_size().x,
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frame.get_position().y
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)
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)
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func _cycle_next() -> void:
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# get the index of the next node
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var next_index := current_index + 1
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var slide_count := content.get_child_count()
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if next_index >= slide_count:
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next_index = 0
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# set the initial position of next slide to the left of content before moving
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var next_node := content.get_child(next_index)
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next_node.set_position(
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Vector2(
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frame.get_position().x - content.get_size().x,
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content.get_position().y
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)
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)
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# slide the current and next nodes to the right simultaneously
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var current_slide := content.get_child(current_index)
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var tween := get_tree().create_tween().set_parallel(true)
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tween.tween_property(
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current_slide,
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"position:x",
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frame.get_position().x + frame.get_size().x, # at end of frame
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duration
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).set_trans(Tween.TRANS_CUBIC)
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tween.tween_property(
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next_node,
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"position:x",
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content.get_position().x, # at beginning of content
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duration
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).set_trans(Tween.TRANS_CUBIC)
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# set the current index to the next one
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current_index = next_index
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func _cycle_previous() -> void:
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# get the index of the previous node
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var previous_index := current_index - 1
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var slide_count := content.get_child_count()
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if previous_index < 0:
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previous_index = slide_count - 1
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# set the initial position of previous slide to the right of content before moving
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var previous_node := content.get_child(previous_index)
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previous_node.set_position(
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Vector2(
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content.get_position().x + content.get_size().x,
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content.get_position().y
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)
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)
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# slide the current and previous nodes to the left simultaneously
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var current_slide := content.get_child(current_index)
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var tween := get_tree().create_tween().set_parallel(true)
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tween.tween_property(
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current_slide,
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"position:x",
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frame.get_position().x - frame.get_size().x, # at left of frame
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duration
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).set_trans(Tween.TRANS_CUBIC)
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tween.tween_property(
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previous_node,
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"position:x",
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content.get_position().x, # at beginning of content
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duration
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).set_trans(Tween.TRANS_CUBIC)
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# set the current index to the previous one
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current_index = previous_index
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