From 238a78197b13c0784c922cd665af8c3912600a86 Mon Sep 17 00:00:00 2001
From: P. J. McDermott <pj@pehjota.net>
Date: Tue, 30 Mar 2021 02:34:03 -0400
Subject: map: Add line accessor functions

---
diff --git a/src/map.c b/src/map.c
index f2f4263..b41507b 100644
--- a/src/map.c
+++ b/src/map.c
@@ -1148,3 +1148,32 @@ db_map_tile_ball_collides(struct db_map *map, int x, int y)
 	i = y * map->w + x;
 	return (map->b_col[i / 8] & (1 << (i % 8))) != 0;
 }
+
+struct db_map_line *
+db_map_get_lines(struct db_map *map)
+{
+	return map->line_head;
+}
+
+int
+db_map_line_get_coords(struct db_map_line *line,
+		int *x1, int *y1, int *x2, int *y2)
+{
+	if (line == NULL) {
+		return -1;
+	}
+	*x1 = line->x1;
+	*y1 = line->y1;
+	*x2 = line->x2;
+	*y2 = line->y2;
+	return 1;
+}
+
+struct db_map_line *
+db_map_line_get_next(struct db_map_line *line)
+{
+	if (line == NULL) {
+		return NULL;
+	}
+	return line->next;
+}
diff --git a/src/map.h b/src/map.h
index b86c3bb..8bbbb5b 100644
--- a/src/map.h
+++ b/src/map.h
@@ -24,6 +24,7 @@
 #include "tileset.h"
 
 struct db_map;
+struct db_map_line;
 
 struct db_map *db_map_new(const char *game_id, const char *level_id);
 SDL_Texture *db_map_render(struct db_map *map, SDL_Renderer *renderer);
@@ -40,5 +41,11 @@ int db_map_tile_player_collides(struct db_map *map, int x, int y)
 	__attribute__((__pure__));
 int db_map_tile_ball_collides(struct db_map *map, int x, int y)
 	__attribute__((__pure__));
+struct db_map_line *db_map_get_lines(struct db_map *map)
+	__attribute__((__pure__));
+int db_map_line_get_coords(struct db_map_line *line,
+		int *x1, int *y1, int *x2, int *y2);
+struct db_map_line *db_map_line_get_next(struct db_map_line *line)
+	__attribute__((__pure__));
 
 #endif  /* DB_MAP_H_ */
--
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