add function to test three-dart averages

3 files changed, 29 insertions, 6 deletions

diff --git a/comp.c b/comp.c
index 13b21a6..4932e37 100644
--- a/comp.c
+++ b/comp.c
@@ -7,8 +7,7 @@
 #include <stdbool.h>
 #include <stdlib.h>
 
-#define HORIZONTAL_STDEV 24
-#define VERTICAL_STDEV 24
+int horizontal_stdev = 24, vertical_stdev = 24;
 
 double drand()
 {
@@ -38,8 +37,8 @@ double gauss(double mean, double stdev)
 
 struct ccoords get_offset()
 {
-	return (struct ccoords){ .x = gauss(0, HORIZONTAL_STDEV),
-		.y = gauss(0, VERTICAL_STDEV) };
+	return (struct ccoords){ .x = gauss(0, horizontal_stdev),
+		.y = gauss(0, vertical_stdev) };
 }
 
 struct ccoords pol_to_cart(struct pcoords c)
diff --git a/comp.h b/comp.h
index c7bc830..460291e 100644
--- a/comp.h
+++ b/comp.h
@@ -3,6 +3,8 @@
 
 #include "match.h"
 
+extern int horizontal_stdev, vertical_stdev;
+
 void comp_visit(struct leg *l);
 
 #endif
diff --git a/dartbot.c b/dartbot.c
index 314548f..03b4ec5 100644
--- a/dartbot.c
+++ b/dartbot.c
@@ -13,11 +13,11 @@ void test_match(int start_points)
 {
 	struct leg *l = leg_init(start_points, NULL);
 
-	while(l->rem > 0)
+	while (l->rem > 0)
 		comp_visit(l);
 
 	printf("(%2d)       %3d\n", 0, l->start);
-	for(int i = 0; i < l->n_visits; ++i) {
+	for (int i = 0; i < l->n_visits; ++i) {
 		struct visit *v = l->visits + i;
 		printf("(%2d)  %3d  %3d", i+1, v->points, v->rem);
 
@@ -129,6 +129,27 @@ void pvp_curses_match(int start_points)
 	curses_match(start_points, "David", user_visit, "Davidn't", user_visit);
 }
 
+void test_averages()
+{
+	int rounds = 100000;
+
+	for (int stdev = 4; stdev < 25; ++stdev) {
+		horizontal_stdev = vertical_stdev = stdev;
+
+		int darts = 0;
+		for (int i = 0; i < rounds; ++i) {
+			struct leg *l = leg_init(501, NULL);
+			while (l->rem > 0)
+				comp_visit(l);
+			leg_free(l);
+
+			darts += (l->n_visits-1)*3 + l->visits[l->n_visits-1].n_darts;
+		}
+
+		printf("%d %f\n", stdev, (double)(501*rounds)/darts*3);
+	}
+}
+
 int main()
 {
 	srand(time(NULL));
@@ -138,6 +159,7 @@ int main()
 	pvc_curses_match(501);
 	//pvp_curses_match(501);
 	test_match(501);
+	//test_averages();
 
 	return 0;
 }