From 69325ef5bbd7f34e894222b9c416c94f4236ac2c Mon Sep 17 00:00:00 2001
From: David Vazgenovich Shakaryan <dvshakaryan@gmail.com>
Date: Mon, 25 Apr 2022 07:47:53 -0700
Subject: web: simplify active user tracking and relevant prompts

---
 web/dartboat_wasm.c | 84 ++++++++++++++++++-----------------------------------
 1 file changed, 29 insertions(+), 55 deletions(-)

diff --git a/web/dartboat_wasm.c b/web/dartboat_wasm.c
index afff868..936af7d 100644
--- a/web/dartboat_wasm.c
+++ b/web/dartboat_wasm.c
@@ -32,6 +32,15 @@ void set_active_player(int player)
 	state->active_p = player;
 	state->active_l = player == 1 ? state->l1 : state->l2;
 	EM_ASM({setPlayerActive($0)}, player);
+
+	if (state->mode == M_PVC && player == 2) {
+		EM_ASM({promptMsgL($0)}, "Bot is throwing…");
+		EM_ASM({setPromptHandler($0)}, "");
+	} else {
+		EM_ASM({promptMsgL($0)}, "Enter points:");
+		EM_ASM({setPromptHandler($0)}, "visit");
+	}
+	EM_ASM({promptMsgR($0)}, "");
 }
 
 void toggle_active_player()
@@ -39,18 +48,6 @@ void toggle_active_player()
 	set_active_player(3 - state->active_p);
 }
 
-void set_user_active()
-{
-	set_active_player(1);
-	EM_ASM({setPromptHandler($0)}, "visit");
-}
-
-void set_boat_active()
-{
-	set_active_player(2);
-	EM_ASM({setPromptHandler()}, "");
-}
-
 void update_player_sugg(int player, int rem)
 {
 	char str[15] = {0}, *p = str;
@@ -166,11 +163,6 @@ EMSCRIPTEN_KEEPALIVE void end_boat_throwing(int rem, double avg)
 
 EMSCRIPTEN_KEEPALIVE void boat_visit()
 {
-	if (state->l1->rem <= 0 || state->l2->rem <= 0)
-		return;
-
-	EM_ASM({promptMsgL($0)}, "Bot is throwing…");
-
 	struct leg *l = state->l2;
 	if (state->undone_count) {
 		--state->undone_count;
@@ -180,12 +172,9 @@ EMSCRIPTEN_KEEPALIVE void boat_visit()
 	}
 
 	struct visit *v = l->visits + l->n_visits - 1;
-
-	double avg;
-	if (v->rem > 0)
-		avg = (double)(l->start - l->rem) / l->n_visits;
-	else
-		avg = ((double)l->start / (((l->n_visits - 1) * 3) + v->n_darts)) * 3;
+	double avg = v->rem > 0 ?
+		(double)(l->start - l->rem) / l->n_visits :
+		(double)l->start / (((l->n_visits - 1) * 3) + v->n_darts) * 3;
 
 	if (!delay_ms) {
 		end_boat_throwing(l->rem, avg);
@@ -193,14 +182,14 @@ EMSCRIPTEN_KEEPALIVE void boat_visit()
 	}
 
 	int pts = 0;
-	char str[20] = {0};
+	char str[15] = {0};
 
 	for (int i = 0; i < v->n_darts; ++i) {
 		pts += segment_points(v->darts[i]);
 		char *seg_name = segment_name(v->darts[i]);
-		if (i) strcat(str, "-");
-		strcat(str, seg_name);
+		strcat(i ? strcat(str, "-") : str, seg_name);
 		free(seg_name);
+
 		EM_ASM({scheduleCCall($0, $1, $2, $3, $4, $5)},
 			"draw_boat_throwing", delay_ms * (i+1),
 			"number", pts, "string", str);
@@ -222,19 +211,11 @@ void post_visit_checks()
 			EM_ASM({promptMsgL($0)}, "Darts needed?");
 		}
 	} else {
-		if (state->mode == M_PVC) {
-			if (state->active_p == 1) {
-				set_boat_active();
-				boat_visit();
-			} else {
-				set_user_active();
-				EM_ASM({promptMsgL($0)}, "Enter points:");
-			}
-		} else if (state->mode == M_PVP) {
+		if (state->mode != M_P) {
 			toggle_active_player();
-			EM_ASM({promptMsgL($0)}, "Enter points:");
-		} else {
-			EM_ASM({promptMsgL($0)}, "Enter points:");
+
+			if (state->mode == M_PVC && state->active_p == 2)
+				boat_visit();
 		}
 	}
 }
@@ -280,38 +261,35 @@ EMSCRIPTEN_KEEPALIVE void user_undo()
 		return;
 	}
 
-	if (state->mode == M_PVP) {
+	if (state->mode == M_PVC) {
+		set_active_player(1);
+	} else if (state->mode == M_PVP) {
 		if (is_match_over())
-			EM_ASM({setPlayerActive($0)}, state->active_p);
+			set_active_player(state->active_p);
 		else
 			toggle_active_player();
 	}
 
-	if (state->mode == M_PVC)
-		set_user_active();
-
 	struct leg *l = state->active_l;
 	struct visit *v = l->visits + --l->n_visits;
 	l->rem += v->points;
+	memcpy(v, 0, sizeof(*v));
+
 	if (state->mode == M_PVC && state->l2->n_visits > l->n_visits) {
 		state->l2->rem += state->l2->visits[--state->l2->n_visits].points;
 		++state->undone_count;
 	}
 
 	EM_ASM({updatePlayerAvg($0, $1)}, 1,
-		l->n_visits ? (double)(l->start-l->rem)/l->n_visits : 0);
+		l->n_visits ? (double)(l->start - l->rem) / l->n_visits : 0);
 	EM_ASM({updatePlayerAvg($0, $1)}, 2,
 		state->l2->n_visits ?
-			(double)(state->l2->start-state->l2->rem)/state->l2->n_visits : 0);
+			(double)(state->l2->start - state->l2->rem) / state->l2->n_visits :
+			0);
 	update_player_rem(state->active_p, l->rem);
 	if (state->mode == M_PVC)
 		update_player_rem(2, state->l2->rem);
 
-	memcpy(v, 0, sizeof(*v));
-
-	EM_ASM({promptMsgR($0)}, "");
-	EM_ASM({setPromptHandler($0)}, "visit");
-	EM_ASM({promptMsgL($0)}, "Enter points:");
 	draw_visits();
 }
 
@@ -351,9 +329,7 @@ EMSCRIPTEN_KEEPALIVE void start_match(int mode)
 	state->mode = mode;
 	state->l1 = leg_init(501, mode == M_PVP ? "Player 1" : "User");
 	state->l2 = leg_init(501, mode == M_PVC ? "Bot" : "Player 2");
-	state->active_p = 1;
-	state->active_l = state->l1;
-	set_user_active();
+	set_active_player(1);
 
 	EM_ASM({showPlayerInfo($0)}, 1);
 	EM_ASM({updatePlayerName($0, $1)}, 1, state->l1->name);
@@ -367,8 +343,6 @@ EMSCRIPTEN_KEEPALIVE void start_match(int mode)
 		EM_ASM({updatePlayerAvg($0, $1)}, 2, 0);
 	}
 
-	EM_ASM({promptMsgL($0)}, "Enter points:");
-	EM_ASM({promptMsgR($0)}, "");
 	draw_visits();
 }
 
-- 
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