From 0e9a1403546b510b3c05a218a87afd29c99ee434 Mon Sep 17 00:00:00 2001
From: "Juan J. Martinez" <jjm@usebox.net>
Date: Thu, 6 Jul 2023 22:19:15 +0100
Subject: Add tracker enemy (Mr Bones)

---
 src/bones.c | 45 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)
 create mode 100644 src/bones.c

(limited to 'src/bones.c')

diff --git a/src/bones.c b/src/bones.c
new file mode 100644
index 0000000..f5d7f42
--- /dev/null
+++ b/src/bones.c
@@ -0,0 +1,45 @@
+#include <stdint.h>
+#include <stdlib.h>
+
+#include "vga.h"
+#include "map.h"
+#include "entities.h"
+
+#include "player.h"
+#include "old.h"
+
+#include "bones.h"
+
+static const Rect frames[2 * 4] =
+{
+    /* right */
+    { 0, 96, 144, 144 },
+    { 16, 96, 144, 144 },
+    { 0, 96, 144, 144 },
+    { 32, 96, 144, 144 },
+
+    /* left */
+    { 48, 96, 144, 144 },
+    { 64, 96, 144, 144 },
+    { 48, 96, 144, 144 },
+    { 80, 96, 144, 144 },
+};
+
+void bones_init(Entity *e)
+{
+    e->frames = (const Rect *)frames;
+    e->update = bones_update;
+}
+
+void bones_update(Entity *e)
+{
+    if (abs(player_y() - e->y) < 8)
+    {
+        if (player_x() > e->x && e->dir != DIR_RIGHT)
+            e->dir = DIR_RIGHT;
+        if (player_x() < e->x && e->dir != DIR_LEFT)
+            e->dir = DIR_LEFT;
+    }
+
+    old_update(e);
+}
-- 
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