From b7f5f6118812bfb6bf0815ab23f3399eec571068 Mon Sep 17 00:00:00 2001
From: P. J. McDermott <pj@pehjota.net>
Date: Mon, 02 Aug 2021 00:45:07 -0400
Subject: maze: Render (untested)

TODO: Color
---
diff --git a/src/maze.c b/src/maze.c
index 3d62485..dcfa150 100644
--- a/src/maze.c
+++ b/src/maze.c
@@ -17,6 +17,7 @@
  * along with Maze Fight.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#include <SDL.h>
 #include <stdlib.h>
 #include "maze.h"
 
@@ -178,6 +179,49 @@ mf_maze_new(int s, int w, int h)
 	return m;
 }
 
+int
+mf_maze_render(struct mf_maze *m, SDL_Renderer *renderer, int cw)
+{
+	int e;
+	int x;
+	int y;
+
+	e = 0;
+
+	for (y = 0; y < m->h; ++y) {
+		for (x = 0; x < m->w; ++x) {
+			if (y < m->h - 1 && mf_maze_is_wall(m, x, y, 0, 1)) {
+				/* Draw v line */
+				if (SDL_RenderDrawLine(renderer,
+							(x+1) * cw, (y  ) * cw,
+							(x+1) * cw, (y+1) * cw)
+						< 0) {
+					SDL_LogError(
+						SDL_LOG_CATEGORY_APPLICATION,
+						"Couldn't draw line: %s",
+						SDL_GetError());
+					e = -1;
+				}
+			}
+			if (x < m->w - 1 && mf_maze_is_wall(m, x, y, 1, 0)) {
+				/* Draw h line */
+				if (SDL_RenderDrawLine(renderer,
+							(x  ) * cw, (y+1) * cw,
+							(x+1) * cw, (y+1) * cw)
+						< 0) {
+					SDL_LogError(
+						SDL_LOG_CATEGORY_APPLICATION,
+						"Couldn't draw line: %s",
+						SDL_GetError());
+					e = -1;
+				}
+			}
+		}
+	}
+
+	return e;
+}
+
 void
 mf_maze_destroy(struct mf_maze **m_p)
 {
diff --git a/src/maze.h b/src/maze.h
index c584c35..04868a0 100644
--- a/src/maze.h
+++ b/src/maze.h
@@ -20,6 +20,8 @@
 #ifndef MF_MAZE_H_
 #define MF_MAZE_H_
 
+#include <SDL.h>
+
 struct mf_maze;
 
 void
@@ -32,6 +34,9 @@ mf_maze_is_wall(struct mf_maze *m, int x, int y, int dx, int dy)
 struct mf_maze *
 mf_maze_new(int s, int w, int h);
 
+int
+mf_maze_render(struct mf_maze *m, SDL_Renderer *renderer, int cw);
+
 void
 mf_maze_destroy(struct mf_maze **m_p);
 
--
cgit v0.9.1