Add entity system, add new enemy (snake)

1 files changed, 34 insertions, 0 deletions

diff --git a/src/entities.h b/src/entities.h
new file mode 100644
index 0000000..e553390
--- /dev/null
+++ b/src/entities.h
@@ -0,0 +1,34 @@
+#ifndef _ENTITIES_H
+#define _ENTITIES_H
+
+#define DIR_RIGHT 0
+#define DIR_LEFT 1
+
+#define WALK_DELAY 8
+
+typedef struct entity_s
+{
+    uint8_t used;
+    uint16_t x;
+    uint16_t y;
+    uint8_t dir;
+    uint8_t frame;
+    uint8_t delay;
+    uint8_t gravity;
+    uint8_t flag;
+    uint8_t bg[16 * 16];
+    /* expected to be 2 directions per 4 frames max; 8 Rect */
+    const Rect *frames;
+    void (*update)(struct entity_s *e);
+} Entity;
+
+void entities_init();
+
+Entity *entities_new();
+
+void entities_update();
+
+void entities_erase();
+void entities_draw();
+
+#endif /* _ENTITIES_H */