From 2fbdf974338bde8576efdae40a819a76b2391033 Mon Sep 17 00:00:00 2001
From: "Juan J. Martinez" <jjm@usebox.net>
Date: Sun, 5 Nov 2023 11:22:55 +0000
Subject: Initial import of the open source release

---
 src/et_spider.c | 102 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 102 insertions(+)
 create mode 100644 src/et_spider.c

(limited to 'src/et_spider.c')

diff --git a/src/et_spider.c b/src/et_spider.c
new file mode 100644
index 0000000..8373d79
--- /dev/null
+++ b/src/et_spider.c
@@ -0,0 +1,102 @@
+/*
+   Kitsune's Curse
+   Copyright (C) 2020-2023 Juan J. Martinez <jjm@usebox.net>
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+#include "splib.h"
+#include "plw.h"
+#include "sound.h"
+#include "main.h"
+
+#include "maps.h"
+
+// generated
+#include "spider.h"
+
+#include "entities.h"
+#include "et_spider.h"
+#include "et_player.h"
+
+void draw_spider()
+{
+    if (!*it_frame)
+        put_sprite4(spider[1], *it_x, *it_y, 1, 0);
+    else
+    {
+        // draws the thread
+        if (!(*it_param & 128))
+            it_k = *it_param & 127;
+        else
+            it_k = *it_extra - (*it_param & 127);
+
+        it_k >>= 3;
+        while (it_k)
+        {
+            put_sprite4(spider[2], *it_x, *it_y - (it_k << 3), 1, 0);
+            --it_k;
+        }
+
+        put_sprite4(spider[0], *it_x, *it_y, 2, 0);
+        erase_sprite(*it_ox, *it_oy, 2);
+    }
+}
+
+void update_spider()
+{
+    // waiting
+    if (!*it_frame)
+    {
+        if (!magic && life && py > *it_y && abs_sub(*it_x, px) < 9 && abs_sub(*it_y, py) < 48)
+        {
+            *it_frame = 1;
+            PLW_PlaySoundEffectP(EFX_SPIDER);
+        }
+        else
+            return;
+    }
+
+    // limit and change direction
+    if ((*it_param & 127) == *it_extra)
+    {
+        // back up
+        if (*it_param & 128)
+        {
+            erase_sprite(*it_x, *it_y + 8, 1);
+            *it_frame = 0;
+            *it_param = 0;
+            goto spider_done;
+        }
+        else
+            // touch bottom
+            *it_param = 128;
+    }
+
+    if (*it_param & 128)
+    {
+        *it_y -= 1;
+        *it_param += 1;
+    }
+    else
+    {
+        *it_y += 8;
+        *it_param += 8;
+    }
+
+spider_done:
+
+    // only going down
+    if (!(*it_param & 128) && check_for_player(16))
+        player_hit(1);
+}
-- 
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