From 72424baa474d71bcd124da3fc927e930ec08ebb0 Mon Sep 17 00:00:00 2001
From: Quinten Kock <quinten@quinten.space>
Date: Mon, 15 Jun 2020 05:37:19 +0200
Subject: [PATCH] Initial commit

---
 Arduchess.ino | 17 +++++++++++
 Board.h       | 79 +++++++++++++++++++++++++++++++++++++++++++++++++++
 Move.h        | 12 ++++++++
 Types.h       | 20 +++++++++++++
 4 files changed, 128 insertions(+)
 create mode 100644 Arduchess.ino
 create mode 100644 Board.h
 create mode 100644 Move.h
 create mode 100644 Types.h

diff --git a/Arduchess.ino b/Arduchess.ino
new file mode 100644
index 0000000..91530d1
--- /dev/null
+++ b/Arduchess.ino
@@ -0,0 +1,17 @@
+#include "Board.h"
+#include "Move.h"
+#include "Types.h"
+
+Board b = Board();
+
+void setup() {
+	// put your setup code here, to run once:
+	Serial.begin(19200);
+}
+
+void loop() {
+	// put your main code here, to run repeatedly:
+	Serial.println(F("hello"));
+	delay(1000);
+	Serial.println(b.get_zobrist());
+}
diff --git a/Board.h b/Board.h
new file mode 100644
index 0000000..05e9be1
--- /dev/null
+++ b/Board.h
@@ -0,0 +1,79 @@
+#ifndef __BOARD_H_INC
+#define __BOARD_H_INC
+
+#include "Types.h"
+
+class Board {
+  public:
+	Board();
+
+	unsigned long get_zobrist() {
+		long* addr = (long*) &field[PTR_ZOBRIST];
+		return *addr;
+	}
+
+  private:
+	byte field[128] = {
+		B_ROOK, B_KNGT, B_BSHP, B_QUEN, B_KING, B_BSHP, B_KNGT, B_ROOK, 0, 0, 0, 0, 0, 0, 0, 0,
+		B_PAWN, B_PAWN, B_PAWN, B_PAWN, B_PAWN, B_PAWN, B_PAWN, B_PAWN, 0, 0, 0, 0, 0, 0, 0, 0,
+		0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+		0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+		0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+		0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+		W_PAWN, W_PAWN, W_PAWN, W_PAWN, W_PAWN, W_PAWN, W_PAWN, W_PAWN, 0, 0, 0, 0, 0, 0, 0, 0,
+		W_ROOK, W_KNGT, W_BSHP, W_QUEN, W_KING, W_BSHP, W_KNGT, W_ROOK, 0, 0, 0, 0, 0, 0, 0, 0,
+	};
+
+	const byte PTR_SIDE_AND_CASTLERIGHT = 0x08; //byte (1=side, 2,4=white castle, 8,16=black)
+	const byte PTR_PTR_REVMOV = 0x09; //byte (points to index)
+	const byte PTR_W_KING = 0x0A; // byte (points to index or maybe 64-arr index)
+	// const byte PTR_B_KING = 0x0B; (PTR_W_KING | COLOR or PTR_W_KING + COLOR)
+	const byte PTR_ZOBRIST = 0x0C; // 4 bytes
+	// 0x0D
+	// 0x0E
+	// 0x0F
+
+	const byte PTR_ENPASSANT = 0x18;
+
+	const byte UNMAKE_START = 0x1A;
+	inline byte get_unmake() __attribute__((always_inline)) {
+		return field[PTR_PTR_REVMOV];
+	}
+	byte next_unmake() {
+		field[PTR_PTR_REVMOV]++;
+		if(get_unmake() >= 0x80) {
+			field[PTR_PTR_REVMOV] = UNMAKE_START;
+			return UNMAKE_START;
+		}
+		while(get_unmake() & 0x88) {
+			field[PTR_PTR_REVMOV]++;
+		}
+		return get_unmake();
+	}
+	byte prev_unmake() {
+		field[PTR_PTR_REVMOV]--;
+		if(get_unmake() < UNMAKE_START) {
+			field[PTR_PTR_REVMOV] = 0x7F;
+			return 0x7F;
+		}
+		while(get_unmake() & 0x88) {
+			field[PTR_PTR_REVMOV]--;
+		}
+		return get_unmake();
+	}
+
+
+};
+
+Board::Board() {
+	// Then, other data we need to store is assigned 0-fields.
+	field[PTR_ZOBRIST+1] = 1;
+}
+
+
+struct unmake {
+	byte sq_from;
+	byte sq_to;
+	byte enpassant;
+
+#endif
diff --git a/Move.h b/Move.h
new file mode 100644
index 0000000..b2cf99e
--- /dev/null
+++ b/Move.h
@@ -0,0 +1,12 @@
+#ifndef __MOVE_H_INC
+#define __MOVE_H_INC
+
+#include "Types.h"
+
+struct Move {
+	byte sq_from;
+	byte sq_to;
+	Piece pc_prom;
+};
+
+#endif
diff --git a/Types.h b/Types.h
new file mode 100644
index 0000000..cedd81f
--- /dev/null
+++ b/Types.h
@@ -0,0 +1,20 @@
+#ifndef __TYPES_H_INC
+#define __TYPES_H_INC
+
+enum Piece: byte {
+	W_PAWN = 0b0000,
+	W_KNGT = 0b0001,
+	W_BSHP = 0b0010,
+	W_ROOK = 0b0100,
+	W_QUEN = 0b0110,
+	W_KING = 0b0111,
+
+	B_PAWN = 0b1000,
+	B_KNGT = 0b1001,
+	B_BSHP = 0b1010,
+	B_ROOK = 0b1100,
+	B_QUEN = 0b1110,
+	B_KING = 0b1111,
+};
+
+#endif