From aa8ac0850cb363778577c27b9afc5c2223d7f770 Mon Sep 17 00:00:00 2001
From: P. J. McDermott <pj@pehjota.net>
Date: Thu, 05 Aug 2021 23:35:16 -0400
Subject: splash: Generate random value for seed text input

---
diff --git a/src/splash.c b/src/splash.c
index b36ec33..08eaeed 100644
--- a/src/splash.c
+++ b/src/splash.c
@@ -19,7 +19,9 @@
 
 #include <SDL.h>
 #include <SDL_ttf.h>
+#include <errno.h>
 #include <stdlib.h>
+#include <string.h>
 #include <math.h>
 #include <time.h>
 #include "defs.h"
@@ -91,6 +93,7 @@ _mf_splash_form(SDL_Renderer *renderer, TTF_Font *text_font,
 	SDL_Color           chkb_color;
 	SDL_Color           chkm_color;
 	double              rand_max_len;
+	char               *seed;
 	struct mftk_widget *grid;
 
 	butn_color.r = MF_COLOR_BUTN_R, butn_color.g = MF_COLOR_BUTN_G;
@@ -100,13 +103,19 @@ _mf_splash_form(SDL_Renderer *renderer, TTF_Font *text_font,
 	chkm_color.r = MF_COLOR_CHKM_R, chkm_color.g = MF_COLOR_CHKM_G;
 	chkm_color.b = MF_COLOR_CHKM_B, chkm_color.a = MF_COLOR_CHKM_A;
 
-	/* Assigned to a variable to satisfy -Wbad-function-cast */
 	rand_max_len = ceil(log10(RAND_MAX));
+	seed = calloc(rand_max_len + 1, sizeof(*seed));
+	if (seed == NULL || sprintf(seed, "%d", rand()) < 0) {
+		SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
+				"Couldn't allocate string: %s",
+				strerror(errno));
+		return NULL;
+	}
 
 	grid = mftk_grid_new(5, 2, MF_SPLASH_ROW_M, MF_SPLASH_COL_M,
 			mftk_label_new(text_font, "Seed", text_color, renderer),
 				MFTK_GRID_HALIGN_R|MFTK_GRID_VALIGN_T,
-			mftk_text_new('0', '9', rand_max_len, "0", text_font,
+			mftk_text_new('0', '9', rand_max_len, seed, text_font,
 				text_color),
 				MFTK_GRID_HALIGN_L|MFTK_GRID_VALIGN_T,
 			mftk_label_new(text_font, "Size", text_color, renderer),
@@ -152,16 +161,28 @@ _mf_splash_form(SDL_Renderer *renderer, TTF_Font *text_font,
 int
 mf_splash(SDL_Renderer *renderer)
 {
+	struct mf_maze     *maze        = NULL;
+	SDL_Color           maze_color;
 	char               *font_path   = NULL;
 	TTF_Font           *title_font  = NULL;
 	TTF_Font           *text_font   = NULL;
 	SDL_Color           form_color;
 	SDL_Color           text_color;
 	struct mftk_widget *box;
-	struct mf_maze     *maze        = NULL;
-	SDL_Color           maze_color;
 	SDL_Event           event;
 
+	/* Create maze */
+	maze = mf_maze_new(time(NULL),
+			MF_WINDOW_W / MF_SPLASH_MAZE_CELL_W,
+			MF_WINDOW_H / MF_SPLASH_MAZE_CELL_W);
+	if (maze == NULL) {
+		goto err;
+	}
+	maze_color.r = MF_COLOR_MAZE_R;
+	maze_color.g = MF_COLOR_MAZE_G;
+	maze_color.b = MF_COLOR_MAZE_B;
+	maze_color.a = MF_COLOR_MAZE_A;
+
 	font_path = mf_strcat(mf_get_fonts_dir(), "/FifteenTwenty-Regular.ttf");
 	title_font = TTF_OpenFont(font_path, MF_SPLASH_TITLE_FONT_S);
 	if (title_font == NULL) {
@@ -200,18 +221,6 @@ mf_splash(SDL_Renderer *renderer)
 	free(font_path);
 	font_path = NULL;
 
-	/* Create maze */
-	maze = mf_maze_new(time(NULL),
-			MF_WINDOW_W / MF_SPLASH_MAZE_CELL_W,
-			MF_WINDOW_H / MF_SPLASH_MAZE_CELL_W);
-	if (maze == NULL) {
-		goto err;
-	}
-	maze_color.r = MF_COLOR_MAZE_R;
-	maze_color.g = MF_COLOR_MAZE_G;
-	maze_color.b = MF_COLOR_MAZE_B;
-	maze_color.a = MF_COLOR_MAZE_A;
-
 	SDL_SetRenderDrawBlendMode(renderer, SDL_BLENDMODE_BLEND);
 
 	while (SDL_WaitEvent(&event)) {
--
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