From b1fbb0b1c078e82a651181101fed9d6742164e0b Mon Sep 17 00:00:00 2001
From: P. J. McDermott <pj@pehjota.net>
Date: Wed, 18 Aug 2021 17:01:27 -0400
Subject: char/enemy: Make a linked list of enemy chars

---
(limited to 'src/game.c')

diff --git a/src/game.c b/src/game.c
index 0c94202..22d6e11 100644
--- a/src/game.c
+++ b/src/game.c
@@ -144,8 +144,9 @@ mf_game(long seed, int size, int fow, int reveal, int enemies,
 		SDL_Renderer *renderer)
 {
 	struct mf_maze      *maze        = NULL;
-	struct mf_char     **chars       = NULL;
-	int                  i;
+	struct mf_char      *player      = NULL;
+	struct mf_char      *enemy_head  = NULL;
+	struct mf_char      *enemy_tail  = NULL;
 	SDL_Color            maze_color;
 	char                *font_path   = NULL;
 	TTF_Font            *text_font   = NULL;
@@ -156,7 +157,6 @@ mf_game(long seed, int size, int fow, int reveal, int enemies,
 	int                  fr;
 	int                  won;
 	Uint32               beg;
-	int                  j;
 	int                  secs;
 	Uint32               end;
 	Uint32               delay;
@@ -172,22 +172,19 @@ mf_game(long seed, int size, int fow, int reveal, int enemies,
 	maze_color.b = MF_COLOR_MAZE_B;
 	maze_color.a = MF_COLOR_MAZE_A;
 
-	chars = calloc(1 + enemies, sizeof(*chars));
-	if (chars == NULL) {
-		SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
-				"Couldn't allocate characters: %s",
-				strerror(errno));
-		goto err;
-	}
-	chars[0] = mf_player_new(maze, MF_WINDOW_H / size);
-	if (chars[0] == NULL) {
+	player = mf_player_new(maze, MF_WINDOW_H / size);
+	if (player == NULL) {
 		goto err;
 	}
-	for (i = 1; i < 1 + enemies; ++i) {
-		chars[i] = mf_enemy_new(maze, MF_WINDOW_H / size, size);
-		if (chars[i] == NULL) {
+	for (; enemies > 0; --enemies) {
+		enemy_tail = mf_enemy_new(maze, MF_WINDOW_H / size, size,
+				enemy_tail);
+		if (enemy_tail == NULL) {
 			goto err;
 		}
+		if (enemy_head == NULL) {
+			enemy_head = enemy_tail;
+		}
 	}
 
 	font_path = mf_strcat(mf_get_fonts_dir(), "/FifteenTwenty-Regular.ttf");
@@ -233,7 +230,7 @@ mf_game(long seed, int size, int fow, int reveal, int enemies,
 				default:
 					break;
 			}
-			mf_player_key_event(chars[0], &event);
+			mf_player_key_event(player, &event);
 			switch (mftk_window_event(win, &event)) {
 				case 0:
 					break;
@@ -244,16 +241,9 @@ mf_game(long seed, int size, int fow, int reveal, int enemies,
 			}
 		}
 		if (won == SDL_FALSE) {
-			for (i = 0; i < 1 + enemies; ++i) {
-				mf_char_update(chars[i]);
-			}
-			for (i = 1; i < 1 + enemies; ++i) {
-				for (j = i + 1; j < 1 + enemies; ++j) {
-					mf_char_collision(chars[i], chars[j],
-							SDL_TRUE);
-				}
-			}
-			mf_char_get_vector(chars[0], &game.player_cx,
+			mf_char_update(player);
+			mf_char_update(enemy_head);
+			mf_char_get_vector(player, &game.player_cx,
 					&game.player_cy, &game.player_travel,
 					&game.player_dx, &game.player_dy);
 			game.player_x = game.player_cx * MF_WINDOW_H / size;
@@ -269,9 +259,8 @@ mf_game(long seed, int size, int fow, int reveal, int enemies,
 				MF_COLOR_BACK_R, MF_COLOR_BACK_G,
 				MF_COLOR_BACK_B, MF_COLOR_BACK_A);
 		SDL_RenderClear(renderer);
-		for (i = 0; i < 1 + enemies; ++i) {
-			mf_char_render(chars[i], renderer);
-		}
+		mf_char_render(player, renderer);
+		mf_char_render(enemy_head, renderer);
 		if (fow == SDL_TRUE && _mf_game_fow(renderer, &game, maze,
 					MF_WINDOW_H / size) < 0) {
 			goto err;
@@ -309,12 +298,8 @@ mf_game(long seed, int size, int fow, int reveal, int enemies,
 	TTF_CloseFont(text_font);
 	text_font = NULL;
 	mf_maze_destroy(&maze);
-	if (chars != NULL) {
-		for (i = 0; i < 1 + enemies; ++i) {
-			mf_char_destroy(&chars[i]);
-		}
-		free(chars);
-	}
+	mf_char_destroy(&player);
+	mf_char_destroy(&enemy_head);
 	return 0;
 
  quit:
@@ -322,12 +307,8 @@ mf_game(long seed, int size, int fow, int reveal, int enemies,
 	TTF_CloseFont(text_font);
 	text_font = NULL;
 	mf_maze_destroy(&maze);
-	if (chars != NULL) {
-		for (i = 0; i < 1 + enemies; ++i) {
-			mf_char_destroy(&chars[i]);
-		}
-		free(chars);
-	}
+	mf_char_destroy(&player);
+	mf_char_destroy(&enemy_head);
 	return 1;
 
  err:
@@ -339,11 +320,7 @@ mf_game(long seed, int size, int fow, int reveal, int enemies,
 	}
 	mftk_window_destroy(&win);
 	mf_maze_destroy(&maze);
-	if (chars != NULL) {
-		for (i = 0; i < 1 + enemies; ++i) {
-			mf_char_destroy(&chars[i]);
-		}
-		free(chars);
-	}
+	mf_char_destroy(&player);
+	mf_char_destroy(&enemy_head);
 	return -1;
 }
--
cgit v0.9.1