From f691e5f266a42aac8a14eb6c71e59111cc9fa16f Mon Sep 17 00:00:00 2001
From: P. J. McDermott <pj@pehjota.net>
Date: Tue, 30 Mar 2021 01:01:06 -0400
Subject: Revert "[WIP] map: Merge wall tiles into hor/vert lines"

---
diff --git a/src/map.c b/src/map.c
index 0a093ee..f33782f 100644
--- a/src/map.c
+++ b/src/map.c
@@ -32,11 +32,6 @@
 #include "output.h"
 #include "xml.h"
 
-struct db_wall {
-	SDL_Rect rect;
-	struct db_wall *next;
-};
-
 struct db_map_layer {
 	Uint32              *tiles;
 	char                *encoding;
@@ -79,8 +74,7 @@ struct db_map {
 	struct db_ball      *ball_head;
 	struct db_ball      *ball_tail;
 	Uint8               *p_col;
-	struct db_wall      *wall_head;
-	struct db_wall      *wall_tail;
+	Uint8               *b_col;
 };
 
 static char *
@@ -777,9 +771,6 @@ _db_map_set_collision_tiles(struct db_map *map)
 	struct db_map_layer *layer;
 	int                  i;
 	int                  gid;
-	Uint8               *b_col;
-	int                  x;
-	int                  y;
 
 	db_dbg("Allocating %d bit field elements", (map->w * map->h + 7) / 8);
 	map->p_col = calloc((map->w * map->h + 7) / 8, sizeof(*map->p_col));
@@ -787,8 +778,8 @@ _db_map_set_collision_tiles(struct db_map *map)
 		db_err("Failed to allocate memory");
 		return;
 	}
-	b_col = calloc((map->w * map->h + 7) / 8, sizeof(*map->p_col));
-	if (b_col == NULL) {
+	map->b_col = calloc((map->w * map->h + 7) / 8, sizeof(*map->p_col));
+	if (map->b_col == NULL) {
 		db_err("Failed to allocate memory");
 		free(map->p_col);
 		return;
@@ -807,31 +798,7 @@ _db_map_set_collision_tiles(struct db_map *map)
 				map->p_col[i / 8] |= 1 << (i % 8);
 			}
 			if (db_tile_ball_collides(map->tileset_head, gid)) {
-				b_col[i / 8] |= 1 << (i % 8);
-			}
-		}
-	}
-
-	for (y = 0; y < map->h; ++y) {
-		for (x = 0; x < map->w; ++x) {
-			i = y * map->w + x;
-			if ((b_col[i / 8] & (1 << (i % 8))) != 0) {
-				if (x > 0 && map->walls[i] != NULL) {
-					++map->walls[i - 1].rect.w;
-					map->walls[i] = map->walls[i - 1];
-					continue;
-				}
-				map->wall_tail = calloc(1,
-						sizeof(*map->wall_tail));
-				if (map->wall_tail == NULL) {
-					db_err("Failed to allocate memory");
-					free(map->p_col);
-					free(b_col);
-					return;
-				}
-				if (map->wall_head == NULL) {
-					map->wall_head = map->wall_tail;
-				}
+				map->b_col[i / 8] |= 1 << (i % 8);
 			}
 		}
 	}
--
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