Added some state to distinguish attacker and defender units

cards/base_card.gd

@@ -1,6 +1,8 @@
 tool
 extends Panel
 
+signal played(card, anchor)
+
 const AnimHelper = preload("res://helpers/anims.gd")
 const BattleHelper = preload("res://helpers/battle.gd")
 
@@ -64,8 +66,10 @@ func update_anchors():
 
 func play(anchor):
 	if spawned_unit:
-		anchor.set_content(spawned_unit.instance())
-	queue_free()
+		var unit = spawned_unit.instance()
+		unit.attacker = hero.attacker if hero else false
+		anchor.set_content(unit)
+	emit_signal("played", self, anchor)
 	
 func return_to_base():
 	AnimHelper.linear_goto(self, base_position, 0.3)

helpers/battle.gd

@@ -19,14 +19,27 @@ static func update_anchors(tree: SceneTree, position, acceptability) -> Anchor:
 		
 	return selected_anchor
 	
-static func spawn_unit(name: String, anchor: Anchor) -> Node:
+static func spawn_unit(name: String, anchor: Anchor, attacker: bool) -> Node:
 	""" Spawn a unit on an empty anchor
 	"""
 	var scene = load("res://units/" + name + ".tscn")
 	var node = scene.instance()
 	anchor.set_content(node)
+	node.attacker = attacker
 	return node
 	
+static func list_units(tree: SceneTree):
+	""" List all units in battle
+	"""
+	var units = []
+
+	for anchor in tree.get_nodes_in_group("anchors"):
+		var content = anchor.get_content()
+		if content:
+			units.append(content)
+	
+	return units
+	
 static func get_state(tree: SceneTree):
 	""" Build the simple state associated with current battle scene
 	"""

helpers/nodes.gd

@@ -0,0 +1,8 @@
+static func set_parent(node: Node, parent: Node):
+	""" Set the parent of a node, reparenting if needed
+	"""
+	var old_parent = node.get_parent()
+	if old_parent and old_parent != parent:
+		old_parent.remove_child(node)
+	
+	parent.add_child(node)

project.godot

@@ -45,6 +45,12 @@ boot_splash/image="res://loading.png"
 boot_splash/bg_color=Color( 0, 0, 0, 1 )
 config/icon="res://icon.png"
 
+[debug]
+
+gdscript/warnings/unused_argument=false
+gdscript/warnings/incompatible_ternary=false
+gdscript/warnings/return_value_discarded=false
+
 [display]
 
 window/size/width=1080

screens/battle/battle.gd

@@ -9,15 +9,21 @@ onready var deck_attack_cards = deck_attack.instance()
 onready var deck_defend_cards = deck_defend.instance()
 var hero_attack
 var hero_defend
+var turn_attack = true
 
 func _ready():
-	hero_attack = create_hero_unit("tomahawk", "attack_start")
-	hero_defend = create_hero_unit("rhino", "defend_start")
+	hero_attack = create_hero_unit("tomahawk", "attack_start", true)
+	hero_defend = create_hero_unit("rhino", "defend_start", false)
 	
 	fill_hand($hand_attack, deck_attack_cards, hero_attack)
 	fill_hand($hand_defend, deck_defend_cards, hero_defend)
 	
-	print(BattleHelper.get_state(get_tree()))
+	$hand_attack.connect("turn_end", self, "end_turn")
+	$hand_defend.connect("turn_end", self, "end_turn")
+	
+	adjust_playable()
+	
+	#print(BattleHelper.get_state(get_tree()))
 	
 func find_free_anchor(anchor_type: String):
 	for anchor in get_tree().get_nodes_in_group("anchors"):
@@ -25,25 +31,29 @@ func find_free_anchor(anchor_type: String):
 			return anchor
 	return null
 	
-func create_hero_unit(name: String, anchor_type: String):
+func create_hero_unit(name: String, anchor_type: String, attacker: bool):
 	var anchor = find_free_anchor(anchor_type)
 	if anchor:
-		return BattleHelper.spawn_unit("heroes/" + name, anchor)
+		return BattleHelper.spawn_unit("heroes/" + name, anchor, attacker)
 	else:
 		return null
 	
 func fill_hand(hand: Node, deck: Node, hero: Node, limit=4):
-	while hand.get_child_count() < 4:
+	while hand.get_card_count() < 4:
 		var count = deck.get_child_count()
 		var index = floor(rand_range(0, count))
 		var card = deck.get_child(index).duplicate()
 		card.set_hero(hero)
-		hand.add_child(card)
+		hand.add_card(card)
 
-	reorganize_hand(hand)
-		
-func reorganize_hand(hand: Node):
-	var i = 0
-	for card in hand.get_children():
-		card.set_hand_location(Vector2(i * 210, 0))
-		i += 1
+	hand.rearrange()
+	
+func end_turn():
+	turn_attack = not turn_attack
+	adjust_playable()	
+	
+func adjust_playable():
+	$hand_attack.visible = turn_attack
+	
+	for unit in BattleHelper.list_units(get_tree()):
+		unit.playable = unit.attacker == turn_attack

screens/battle/battle.tscn

@@ -1,14 +1,17 @@
-[gd_scene load_steps=6 format=2]
+[gd_scene load_steps=8 format=2]
 
 [ext_resource path="res://screens/battle/mechanolith.ogg" type="AudioStream" id=1]
+[ext_resource path="res://theme/ui.tres" type="Theme" id=2]
 [ext_resource path="res://arenas/normal1.tscn" type="PackedScene" id=3]
 [ext_resource path="res://screens/battle/background.jpg" type="Texture" id=4]
 [ext_resource path="res://screens/battle/battle.gd" type="Script" id=5]
+[ext_resource path="res://screens/battle/hand.gd" type="Script" id=6]
 [ext_resource path="res://decks/all.tscn" type="PackedScene" id=9]
 
 [node name="view" type="Panel"]
 anchor_right = 1.0
 anchor_bottom = 1.0
+theme = ExtResource( 2 )
 script = ExtResource( 5 )
 __meta__ = {
 "_edit_use_anchors_": false
@@ -36,10 +39,24 @@ margin_left = 240.0
 margin_top = 1660.0
 margin_right = 1050.0
 margin_bottom = 1900.0
+script = ExtResource( 6 )
 __meta__ = {
 "_edit_use_anchors_": false,
 "_editor_description_": ""
 }
+attack = true
+
+[node name="skip" type="Button" parent="hand_attack"]
+anchor_top = 1.0
+anchor_bottom = 1.0
+margin_left = -240.0
+margin_top = -69.0
+margin_right = 82.0
+margin_bottom = 20.0
+text = "Skip"
+__meta__ = {
+"_edit_use_anchors_": false
+}
 
 [node name="hand_defend" type="Control" parent="."]
 visible = false
@@ -48,6 +65,7 @@ margin_left = 1180.0
 margin_top = 760.0
 margin_right = 1990.0
 margin_bottom = 1000.0
+script = ExtResource( 6 )
 __meta__ = {
 "_edit_use_anchors_": false
 }

screens/battle/hand.gd

@@ -0,0 +1,43 @@
+extends Control
+
+const NodesHelpers = preload("res://helpers/nodes.gd")
+
+signal turn_end
+
+export var attack = false
+var cards = []
+
+func _ready():
+	if has_node("skip"):
+		$skip.connect("pressed", self, "emit_turn_end")
+	
+func add_card(card):
+	""" Add a card to the hand
+	"""
+	cards.append(card)
+	NodesHelpers.set_parent(card, self)
+	card.connect("played", self, "on_card_played")
+	
+func get_card_count():
+	""" Get the number of cards in hand
+	"""
+	return len(cards)
+
+func rearrange():
+	""" Rearrange visually the cards in hand
+	"""
+	var i = 0
+	for card in cards:
+		card.set_hand_location(Vector2(i * 210, 0))
+		i += 1
+		
+func on_card_played(card, anchor):
+	""" Called when a card is played
+	"""
+	card.queue_free()
+	cards.erase(card)
+	rearrange()
+	emit_turn_end()
+	
+func emit_turn_end():
+	emit_signal("turn_end")

tests/hand_play_card.tscn

@@ -0,0 +1,43 @@
+[gd_scene load_steps=6 format=2]
+
+[ext_resource path="res://screens/battle/hand.gd" type="Script" id=1]
+[ext_resource path="res://arenas/anchor.tscn" type="PackedScene" id=2]
+[ext_resource path="res://cards/spawn_breeze.tscn" type="PackedScene" id=3]
+[ext_resource path="res://theme/ui.tres" type="Theme" id=4]
+
+[sub_resource type="GDScript" id=1]
+script/source = "extends Node2D
+
+func _ready():
+	$hand.add_card($card)
+	$hand.rearrange()
+"
+
+[node name="Node2D" type="Node2D"]
+script = SubResource( 1 )
+
+[node name="anchor" parent="." instance=ExtResource( 2 )]
+position = Vector2( 570, 900 )
+
+[node name="hand" type="Control" parent="."]
+margin_left = 160.0
+margin_top = 1050.0
+margin_right = 990.0
+margin_bottom = 1380.0
+script = ExtResource( 1 )
+__meta__ = {
+"_edit_use_anchors_": false
+}
+
+[node name="card" parent="." instance=ExtResource( 3 )]
+
+[node name="help" type="Label" parent="."]
+margin_left = 170.0
+margin_top = 470.0
+margin_right = 953.0
+margin_bottom = 519.0
+theme = ExtResource( 4 )
+text = "Drag the card to the anchor, to deploy it"
+__meta__ = {
+"_edit_use_anchors_": false
+}

tests/unit_combat.tscn

@@ -23,15 +23,27 @@ position = Vector2( 400, 800 )
 content = NodePath("flea")
 
 [node name="flea" parent="anchor" instance=ExtResource( 4 )]
+base_move_points = 1
+base_hull_points = 2
+base_damage_points = 2
+attacker = true
+playable = true
 
 [node name="anchor2" parent="." instance=ExtResource( 2 )]
 position = Vector2( 700, 800 )
 content = NodePath("trapper")
 
 [node name="trapper" parent="anchor2" instance=ExtResource( 3 )]
+modulate = Color( 0.5, 0.5, 0.5, 1 )
+base_move_points = 0
+base_hull_points = 1
+base_shield_points = 0
+base_damage_points = 2
 
 [node name="anchor3" parent="." instance=ExtResource( 2 )]
 position = Vector2( 550, 1100 )
 content = NodePath("avenger")
 
 [node name="avenger" parent="anchor3" instance=ExtResource( 5 )]
+modulate = Color( 0.5, 0.5, 0.5, 1 )
+base_shield_points = 3

units/base_unit.gd

@@ -11,6 +11,8 @@ export var base_move_points = 0 setget set_base_move_points
 export var base_hull_points = 0 setget set_base_hull_points
 export var base_shield_points = 0 setget set_base_shield_points
 export var base_damage_points = 0 setget set_base_damage_points
+export var attacker = false setget set_attacker
+export var playable = false setget set_playable
 
 var selected_anchor
 var dragged
@@ -24,6 +26,8 @@ func _ready():
 	set_base_move_points(base_move_points)
 	set_base_hull_points(base_hull_points)
 	set_base_shield_points(base_shield_points)
+	set_attacker(attacker)
+	set_playable(playable)
 	
 func destroy():
 	if get_parent() is Anchor:
@@ -31,6 +35,21 @@ func destroy():
 		
 	queue_free()
 	
+func set_attacker(val):
+	attacker = val
+	if has_node("points"):
+		if attacker:
+			$points.modulate = Color(1.0, 1.0, 1.0)
+		else:
+			$points.modulate = Color(1.0, 0.3, 0.3)
+
+func set_playable(val):
+	playable = val
+	if playable:
+		modulate = Color(1.0, 1.0, 1.0)
+	else:
+		modulate = Color(0.5, 0.5, 0.5)
+		
 func set_sprite(val):
 	sprite = val
 	if has_node("sprite"):
@@ -55,36 +74,34 @@ func set_base_damage_points(val):
 	base_damage_points = val
 	if has_node("points"):
 		$points.damage = val
-		
+
 func can_target(other):
-	if other == self:
+	if not playable or not other or other == self:
 		return false
 	else:
-		return true
+		return other.attacker != attacker
 	
 func can_be_used_on_anchor(anchor):
-	return anchor is Anchor and anchor.is_connected_to(get_parent()) and (anchor.is_empty() or can_target(anchor.get_content()))
+	return playable and anchor is Anchor and anchor.is_connected_to(get_parent()) and (anchor.is_empty() or can_target(anchor.get_content()))
 		
 func update_anchors():
 	var cursor = rect_global_position + dragged if dragged else null
 	selected_anchor = BattleHelper.update_anchors(get_tree(), cursor, funcref(self, "can_be_used_on_anchor"))
 
 func play(anchor):
-	if anchor.is_empty():
-		move_to(anchor)
-	else:
-		var other = anchor.get_content()
-		if other.has_method("get_points"):
-			var won = attack(other)
-			if won:
-				move_to(anchor)
-			else:
-				return_to_base()
+	if playable:
+		if anchor.is_empty():
+			move_to(anchor)
 		else:
+			var other = anchor.get_content()
+			if other.has_method("get_points"):
+				attack(other)
 			return_to_base()
 			
 func move_to(anchor):
-	anchor.set_content(self)
+	if $points.move:
+		$points.move -= 1
+		anchor.set_content(self)
 			
 func get_points() -> UnitPoints:
 	if $points is UnitPoints:
@@ -125,6 +142,9 @@ func return_to_base():
 	$move_hint.set_point_position(1, Vector2(0, 0))
 
 func _gui_input(event):
+	if not playable:
+		return
+		
 	if event is InputEventMouseButton and event.button_index == 1:
 		if event.pressed:
 			dragged = event.position

units/base_unit.tscn

@@ -23,6 +23,7 @@ position = Vector2( 50, 50 )
 texture = ExtResource( 2 )
 
 [node name="points" parent="." instance=ExtResource( 3 )]
+modulate = Color( 1, 0.5, 0.5, 1 )
 anchor_left = 0.5
 anchor_top = 0.5
 anchor_right = 0.5
@@ -31,5 +32,6 @@ margin_top = 70.0
 margin_bottom = 115.0
 
 [node name="move_hint" type="Line2D" parent="."]
+visible = false
 points = PoolVector2Array( 50, 50, 0, 0 )
 antialiased = true