Initial import of the open source release

1 files changed, 75 insertions, 0 deletions

diff --git a/src/et_platform.c b/src/et_platform.c
new file mode 100644
index 0000000..0eab3cc
--- /dev/null
+++ b/src/et_platform.c
@@ -0,0 +1,75 @@
+/*
+   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 "main.h"
+
+#include "maps.h"
+
+// generated
+#include "platform.h"
+
+#include "entities.h"
+#include "et_player.h"
+#include "et_platform.h"
+
+void draw_platform() {
+    put_sprite4(platform[*it_frame], *it_x, *it_y, 1, 0);
+    put_sprite4(platform[*it_frame], *it_x + 8, *it_y, 1, 0);
+    erase_sprite(*it_ox, *it_oy, 1);
+    erase_sprite(*it_ox + 8, *it_oy, 1);
+}
+
+void update_platform() {
+
+    // check limit and change direction
+    if ((*it_delay)++ >= *it_extra)
+    {
+        *it_delay = 1;
+        *it_param ^= 128;
+    }
+
+    // track player if on the platform
+    if (check_for_point(sp_it, px + 1, py + 24, 16, 8)
+            || check_for_point(sp_it, px + 6, py + 24, 16, 8))
+    {
+        py = *it_y - 24;
+
+        if (*it_delay & 1)
+            return;
+
+        if (*it_param)
+        {
+            if (!is_map_blocked(px + 8, py + (player_h ? 6 : 0))
+                    && !is_map_blocked(px + 8, py + 23))
+                px += 2;
+        }
+        else
+        {
+            if (!is_map_blocked(px - 1, py + (player_h ? 6 : 0))
+                    && !is_map_blocked(px - 1, py + 23))
+                px -= 2;
+        }
+    }
+    else if (*it_delay & 1)
+        return;
+
+    if (*it_param)
+        *it_x += 2;
+    else
+        *it_x -= 2;
+}