Reorganize code into library for reuse

include/mazemaker.h

@@ -0,0 +1,29 @@
+#ifndef _MAZEMAKER_H
+#define _MAZEMAKER_H 1
+
+#include <stdlib.h>
+#include <stdint.h>
+
+typedef uint8_t edgeweight_t;
+
+typedef struct {
+    edgeweight_t up, right;
+} mazeedges_t;
+
+typedef struct {
+    size_t width, height;
+    mazeedges_t** grid;
+} mazegrid_t;
+
+typedef enum {
+    EDGE_UP,
+    EDGE_RIGHT,
+    EDGE_DOWN,
+    EDGE_LEFT
+} mazeedge_dir_t;
+
+void mazemaker_generate_maze(int width, int height, mazegrid_t* result);
+void mazemaker_free_maze(mazegrid_t* maze);
+int mazemaker_maze_to_png(mazegrid_t const* maze, char const* filename);
+
+#endif // !def(_MAZEMAKER_H)