Migrate to piece object

MainGame.gd

@@ -1,11 +1,10 @@
 extends Node
 
-var piece = load("res://Piece.tscn")
-const TILE_OFFSET := Vector2(32,32)
-
 var turnID = 0
 var nTurns = 0
 signal turn_updated
+var fileParsers := []
+var currFileParser = 0
 
 func update_turns():
     self.nTurns = len($FileParser.turns)
@@ -30,12 +29,5 @@ func load_turn(turn: int):
     for child in $Board.get_children(): # Clear old children
        child.queue_free()
     for pos in currTurn.positions:
-        var currPiece = piece.instance()
-        var loc = $Board.map_to_world(currTurn.positions[pos])
-        currPiece.frame = "KQBNRP".find(pos[1])
-        currPiece.name = pos
-        if pos[0] == "B":
-            currPiece.frame+=6
-        currPiece.position = loc + TILE_OFFSET
-        $Board.add_child(currPiece)
+        $Board.add_piece("WB".find(pos[0]),"KQBNRP".find(pos[1]),currTurn.positions[pos])
     emit_signal("turn_updated", self.turnID)

MainGame.tscn

@@ -1,8 +1,9 @@
-[gd_scene load_steps=5 format=2]
+[gd_scene load_steps=6 format=2]
 
 [ext_resource path="res://FileParser.tscn" type="PackedScene" id=1]
 [ext_resource path="res://BoardTile.png" type="Texture" id=2]
 [ext_resource path="res://MainGame.gd" type="Script" id=3]
+[ext_resource path="res://Board.gd" type="Script" id=4]
 
 [sub_resource type="TileSet" id=1]
 0/name = "BoardTile.png 0"
@@ -43,6 +44,7 @@ cell_quadrant_size = 64
 cell_y_sort = true
 format = 1
 tile_data = PoolIntArray( 65537, 1, 0, 65538, 0, 0, 65539, 1, 0, 65540, 0, 0, 65541, 1, 0, 65542, 0, 0, 65543, 1, 0, 65544, 0, 0, 131073, 0, 0, 131074, 1, 0, 131075, 0, 0, 131076, 1, 0, 131077, 0, 0, 131078, 1, 0, 131079, 0, 0, 131080, 1, 0, 196609, 1, 0, 196610, 0, 0, 196611, 1, 0, 196612, 0, 0, 196613, 1, 0, 196614, 0, 0, 196615, 1, 0, 196616, 0, 0, 262145, 0, 0, 262146, 1, 0, 262147, 0, 0, 262148, 1, 0, 262149, 0, 0, 262150, 1, 0, 262151, 0, 0, 262152, 1, 0, 327681, 1, 0, 327682, 0, 0, 327683, 1, 0, 327684, 0, 0, 327685, 1, 0, 327686, 0, 0, 327687, 1, 0, 327688, 0, 0, 393217, 0, 0, 393218, 1, 0, 393219, 0, 0, 393220, 1, 0, 393221, 0, 0, 393222, 1, 0, 393223, 0, 0, 393224, 1, 0, 458753, 1, 0, 458754, 0, 0, 458755, 1, 0, 458756, 0, 0, 458757, 1, 0, 458758, 0, 0, 458759, 1, 0, 458760, 0, 0, 524289, 0, 0, 524290, 1, 0, 524291, 0, 0, 524292, 1, 0, 524293, 0, 0, 524294, 1, 0, 524295, 0, 0, 524296, 1, 0 )
+script = ExtResource( 4 )
 
 [node name="FileParser" parent="." instance=ExtResource( 1 )]
 

Piece.gd

@@ -1,16 +1,46 @@
-extends Label
+extends Sprite
 
+enum TYPES {KING, QUEEN, BISHOP, KNIGHT, ROOK, PAWN}
+enum COLOUR {WHITE=0, BLACK=1}
+const PAWN_DIR = [-1, 1]
+const KNIGHT_MOVES = [Vector2(1,2),
+                      Vector2(-1,2),
+                      Vector2(-1,-2),
+                      Vector2(1,-2),
+                      Vector2(2,1),
+                      Vector2(-2,1),
+                      Vector2(-2,-1),
+                      Vector2(2,-1)]
 
-# Declare member variables here. Examples:
-# var a: int = 2
-# var b: String = "text"
+var gridPos : Vector2
+var type : int
+var moved : bool = false
+var colour : int
+onready var board = get_parent()
 
+func init(colour: int, type: int) -> void:
+    self.colour = colour
+    self.type = type
+    self.set_frame(colour*6 + type)
 
-# Called when the node enters the scene tree for the first time.
-func _ready() -> void:
-    pass # Replace with function body.
+func can_move(newLoc, capture=false) -> bool:
+    var raw = newLoc - self.gridPos
+    var ref = raw.abs()
+    match type:
+        TYPES.QUEEN:
+            return ref.x == 0 or ref.y == 0 or ref.x == ref.y
+        TYPES.KING:
+            return ref.length_squared < 2
+        TYPES.KNIGHT:
+            return ref in KNIGHT_MOVES
+        TYPES.ROOK:
+            return ref.x == 0 or ref.y == 0
+        TYPES.BISHOP:
+            return ref.x == ref.y
+        TYPES.PAWN:
+            if not self.moved:
+                return ref.x == int(capture) and raw in [PAWN_DIR[self.colour], PAWN_DIR[self.colour]*2]
+            else:
+                return ref.x == int(capture) and raw == PAWN_DIR[self.colour]
+    return false
 
-
-# Called every frame. 'delta' is the elapsed time since the previous frame.
-#func _process(delta: float) -> void:
-#    pass

Piece.tscn

@@ -1,10 +1,15 @@
-[gd_scene load_steps=2 format=2]
+[gd_scene load_steps=4 format=2]
 
 [ext_resource path="res://ChessSprite.png" type="Texture" id=1]
+[ext_resource path="res://Piece.gd" type="Script" id=2]
+[ext_resource path="res://Draggable.tscn" type="PackedScene" id=3]
 
 [node name="Piece" type="Sprite"]
 scale = Vector2( 0.3, 0.3 )
 texture = ExtResource( 1 )
 vframes = 2
 hframes = 6
-frame = 4
+frame = 11
+script = ExtResource( 2 )
+
+[node name="Draggable" parent="." instance=ExtResource( 3 )]