1 files changed, 26 insertions, 0 deletions
diff --git a/include/engine/fov.h b/include/engine/fov.h
new file mode 100644
index 0000000..3af421e
--- /dev/null
+++ b/include/engine/fov.h
@@ -0,0 +1,26 @@
+#ifndef ENGINE_FOV_H
+#define ENGINE_FOV_H
+
+#include <stdbool.h>
+#include "types.h"
+#include "vector.h"
+
+/* `fov_shadowcast`: */
+/*   map:         your 2D enum tile grid
+ *   mapsize:     x: width, y: height of the map
+ *   visblocking: pointer to a function that returns `true` when receiving a
+ *                pointer to a LOS blocking tile
+ *   lightmap:    [out] 2D lightmap, this is simply overwritten with the distance to
+ *                the source.
+ *   range:       visibility range/radius.
+ *   src:         2D point to calculate FOV from
+ *   */
+void fov_shadowcast(
+	const void *map,
+	const v2_i32 mapsize,
+	bool (*visblocking)(const void*),
+	i32 *lightmap,
+	const i32 range,
+	v2_i32 src);
+
+#endif