Init, drawing walls semi-works

kubo_context.c

@@ -0,0 +1,54 @@
+#include "kubo_context.h"
+
+struct kubo_context *kubo_context_init() {
+    struct kubo_context *context = malloc(sizeof(struct kubo_context));
+
+    context->num_walls_alloc = KUBO_CONTEXT_NUM_WALLS_ALLOC;
+    context->walls =
+        malloc(sizeof(struct kubo_wall) * context->num_walls_alloc);
+
+    return context;
+}
+
+void kubo_context_cleanup(struct kubo_context *context) {
+    free(context->walls);
+    free(context);
+}
+
+bool kubo_context_add_wall(struct kubo_context *context,
+                           struct kubo_wall *wall) {
+
+    struct kubo_wall **new_walls;
+
+    if (context->num_walls == context->num_walls_alloc - 1) {
+
+        context->num_walls_alloc *= 2;
+
+        new_walls = realloc(context->walls, sizeof(struct kubo_wall *) *
+                                                context->num_walls_alloc);
+
+        if (!new_walls)
+            return false;
+
+        context->walls = new_walls;
+    }
+
+    context->walls[context->num_walls++] = wall;
+
+    return true;
+}
+
+struct kubo_wall *kubo_context_get_pending_wall(struct kubo_context *context) {
+
+    if (context->num_walls > 0 &&
+        (context->walls[context->num_walls - 1]->wall_state == KUBO_WALL_INIT ||
+         context->walls[context->num_walls - 1]->wall_state ==
+             KUBO_WALL_STARTED)) {
+        return context->walls[context->num_walls - 1];
+    }
+
+    struct kubo_wall *wall = kubo_wall_init();
+    kubo_context_add_wall(context, wall);
+
+    return wall;
+}