From a8f69f1262bd76ab311ebe760f314fa6e4526d15 Mon Sep 17 00:00:00 2001
From: tslil clingman <tslil@posteo.de>
Date: Mon, 18 Jan 2021 13:43:49 -0500
Subject: Toying with symmetrising data

---
 src/pptdb.c | 53 ++++++++++++++++++++++++++++++++++-------------------
 1 file changed, 34 insertions(+), 19 deletions(-)

(limited to 'src/pptdb.c')

diff --git a/src/pptdb.c b/src/pptdb.c
index b1d91ce..5c5c718 100644
--- a/src/pptdb.c
+++ b/src/pptdb.c
@@ -12,7 +12,7 @@ int generate, outcome_black;
 const int max_depth = 6;
 
 static void
-write_input(void) {
+write_input(const int dx, const int dy) {
 	// Two numbers for flats remaining
 	fprintf(training_fh,"%.8f,%.8f,",
 					(float)(white_count & 127)/max_flats,
@@ -20,28 +20,37 @@ write_input(void) {
 
 	// Write the board layers
 	float val;
+	int col, row;
 	for (uint8_t depth = 0; depth < max_depth; depth++) {
-		for (uint8_t k = 0; k < board_size * board_size; k++) {
-			val = 0;
-			if (COUNT_AT(k)>depth) {
-				if (depth == 0) {
-					// Top layer of stacks is handled differently to indicate
-					// stone type
-					if (STONE_AT(k) == STONE_STANDING) {
-						val = (colours[k] & 1) ? +0.25 : -0.25;
-					} else if (STONE_AT(k) == STONE_CAPSTONE) {
-						val = (colours[k] & 1) ? +1.00 : -1.00;
+		row = (dy>0)?-1:board_size;
+		for (int i = 0; i < board_size; i++) {
+			row += dy;
+			col = (dx>0)?-1:board_size;
+			for (int j = 0; j < board_size; j++) {
+				col += dx;
+				const uint8_t k = THE_COORDS(col, row);
+				val = 0;
+				if (COUNT_AT(k)>depth) {
+					if (depth == 0) {
+						// Top layer of stacks is handled differently to indicate
+						// stone type
+						if (STONE_AT(k) == STONE_STANDING) {
+							val = (colours[k] & 1) ? +0.25 : -0.25;
+						} else if (STONE_AT(k) == STONE_CAPSTONE) {
+							val = (colours[k] & 1) ? +1.00 : -1.00;
+						} else {
+							val = (colours[k] & 1) ? +0.50 : -0.50;
+						}
 					} else {
-						val = (colours[k] & 1) ? +0.50 : -0.50;
+						// Layers underneath
+						val = (colours[k] & (1<<depth)) ? +0.50 : -0.50;
 					}
-				} else {
-					// Layers underneath
-					val = (colours[k] & (1<<depth)) ? +0.50 : -0.50;
 				}
+				fprintf(training_fh,"%.2f,", val);
 			}
-			fprintf(training_fh,"%.2f,", val);
 		}
 	}
+	fprintf(training_fh,"%d\n", outcome_black);
 }
 
 // Warning: performs _no_ checks on input whatsoever
@@ -106,8 +115,14 @@ parse_line(const char *pt, const ssize_t read) {
 		}
 		// Generate training data, not too early in the game
 		if (generate && ply + 4 >= total_plies) {
-			write_input();
-			fprintf(training_fh,"%d\n", outcome_black);
+			/*
+			 * int dx = (rand()&1)?-1:+1;
+			 * int dy = (rand()&1)?-1:+1;
+			 */
+			write_input(1,1);
+			write_input(1,-1);
+			write_input(-1,1);
+			write_input(-1,-1);
 		}
 		// Parse next action
 		while (idx<read && pt[idx++]!=',');
@@ -204,7 +219,7 @@ main(int argc, char **argv) {
 Black wins: %.3f%%\n\
 Road wins: %d\nFlat wins: %d\n\
 Average turns to road win: %.3f\n\
-Average turns to flat win: %f\n",
+Average turns to flat win: %.3f\n",
 					 illegal, overflow,
 					 (double)black_wins / (double)(black_wins+white_wins) * 100,
 					 road_wins, flat_wins,
-- 
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