From b2d9a390e16b6a04be0bdeed233e4af3450f0816 Mon Sep 17 00:00:00 2001
From: Relintai <relintai@protonmail.com>
Date: Wed, 18 Oct 2023 17:32:49 +0200
Subject: [PATCH] Simple card flip script.

---
 card/Card.gd | 120 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 120 insertions(+)
 create mode 100644 card/Card.gd

diff --git a/card/Card.gd b/card/Card.gd
new file mode 100644
index 0000000..82e4c50
--- /dev/null
+++ b/card/Card.gd
@@ -0,0 +1,120 @@
+tool
+extends Control
+
+enum State {
+	STATE_OFF = 0,
+	STATE_FLIP_PHASE_1 = 1,
+	STATE_FLIP_PHASE_2 = 2,
+};
+
+export(Texture) var texture_from : Texture = null
+export(Texture) var texture_back : Texture = null
+export(bool) var flip : bool = false
+
+var tex_mirror : bool = false
+var angle : float = 0
+
+export(bool) var start_flip : bool = false setget set_flip
+
+var _state : int = 0
+var mesh : ArrayMesh = ArrayMesh.new()
+
+func start():
+	_state = State.STATE_FLIP_PHASE_1
+	
+	set_process(true)
+
+func _draw() -> void:
+	var tex : Texture = null
+	
+	if flip:
+		tex = texture_back
+	else:
+		tex = texture_from
+		
+	var tf_top : Transform2D = Transform2D()
+	tf_top.x = Vector2(1, 0).rotated(angle)
+	var tf_bottom : Transform2D = Transform2D()
+	tf_bottom.x = Vector2(1, 0).rotated(-angle)
+	
+	var arr : Array = Array()
+	
+	arr.resize(ArrayMesh.ARRAY_MAX)
+	
+	var rhx : float = rect_size.x / 2
+	
+	var v : PoolVector2Array = PoolVector2Array()
+	v.push_back(tf_top.xform(Vector2(-rhx, 0)) + Vector2(rhx, 0))
+	v.push_back(tf_top.xform(Vector2(rhx, 0)) + Vector2(rhx, 0))
+	v.push_back(tf_bottom.xform(Vector2(-rhx, rect_size.y)) + Vector2(rhx, 0))
+	v.push_back(tf_bottom.xform(Vector2(rhx, rect_size.y)) + Vector2(rhx, 0))
+	arr[ArrayMesh.ARRAY_VERTEX] = v
+	
+	var c : PoolColorArray = PoolColorArray()
+	c.push_back(Color(1, 1, 1, 1))
+	c.push_back(Color(1, 1, 1, 1))
+	c.push_back(Color(1, 1, 1, 1))
+	c.push_back(Color(1, 1, 1, 1))
+	arr[ArrayMesh.ARRAY_COLOR] = c
+	
+	if !tex_mirror:
+		var uv : PoolVector2Array = PoolVector2Array()
+		uv.push_back(Vector2(0, 0))
+		uv.push_back(Vector2(1, 0))
+		uv.push_back(Vector2(0, 1))
+		uv.push_back(Vector2(1, 1))
+		arr[ArrayMesh.ARRAY_TEX_UV] = uv
+	else:
+		var uv : PoolVector2Array = PoolVector2Array()
+		uv.push_back(Vector2(1, 0))
+		uv.push_back(Vector2(0, 0))
+		uv.push_back(Vector2(1, 1))
+		uv.push_back(Vector2(0, 1))
+		arr[ArrayMesh.ARRAY_TEX_UV] = uv
+	
+	var indices : PoolIntArray = PoolIntArray()
+	indices.push_back(0)
+	indices.push_back(1)
+	indices.push_back(2)
+	indices.push_back(1)
+	indices.push_back(2)
+	indices.push_back(3)
+	arr[ArrayMesh.ARRAY_INDEX] = indices
+	
+	mesh.clear_surfaces()
+	mesh.add_surface_from_arrays(Mesh.PRIMITIVE_TRIANGLES, arr)
+	
+	draw_mesh(mesh, tex, null, Transform2D())
+
+func _process(delta: float) -> void:
+	if _state == State.STATE_OFF:
+		set_process(false)
+	elif _state == State.STATE_FLIP_PHASE_1:
+		angle += 0.01
+		
+		if angle >= PI / 2:
+			angle = PI / 2
+			_state = State.STATE_FLIP_PHASE_2
+			flip = !flip
+			tex_mirror = true
+		
+		update()
+	elif _state == State.STATE_FLIP_PHASE_2:
+		angle += 0.01
+		
+		if angle >= PI:
+			angle = 0
+			_state = State.STATE_FLIP_PHASE_1
+			tex_mirror = false
+			
+			
+		update()
+
+func _ready() -> void:
+	set_process(false)
+	
+	start()
+
+func set_flip(val):
+	if val:
+		start()