Initial import of the open source release

1 files changed, 156 insertions, 0 deletions

diff --git a/src/et_demon.c b/src/et_demon.c
new file mode 100644
index 0000000..fd54f8e
--- /dev/null
+++ b/src/et_demon.c
@@ -0,0 +1,156 @@
+/*
+   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 <string.h>
+
+#include "splib.h"
+#include "plw.h"
+#include "sound.h"
+#include "main.h"
+
+#include "maps.h"
+
+// generated
+#include "demon.h"
+#include "fireball.h"
+
+#include "entities.h"
+#include "et_demon.h"
+#include "et_player.h"
+
+static const struct st_entity base = {
+    ET_EXPLO,
+    0, 0, 0, 0, 0, 0, 0,
+    0, // param
+    0, // extra
+    update_fireball,
+    draw_fireball,
+    0
+};
+
+void draw_fireball()
+{
+    put_sprite4(fireball[player_frames[*it_frame]], *it_x, *it_y, 1, 0);
+    erase_sprite(*it_ox, *it_oy, 1);
+}
+
+void update_fireball()
+{
+    if ((*it_delay)++ == 1)
+    {
+        *it_delay = 0;
+        if (++(*it_frame) > WALK_CYCLE)
+            *it_frame = WALK;
+    }
+
+    if (*it_param)
+    {
+        if (is_map_blocked(*it_x + 11, *it_y + 8)
+                || *it_x > TW * TMW - 8 - 4)
+            goto fireball_done;
+        else
+            *it_x += 2;
+    }
+    else
+    {
+        if (is_map_blocked(*it_x - 4, *it_y + 8)
+                || *it_x < 4)
+            goto fireball_done;
+        else
+            *it_x -= 2;
+    }
+
+    if (check_for_player(8))
+    {
+        player_hit(2);
+fireball_done:
+        erase_sprite(*it_ox, *it_oy, 1);
+        destroy_entity();
+    }
+}
+
+void new_fireball()
+{
+    if (!new_entity())
+        return;
+
+    memcpy(sp_new, &base, sizeof(base) - 2);
+    if (*it_param)
+        sp_new->x = *it_x + 8;
+    else
+        sp_new->x = *it_x - 8;
+    sp_new->param = *it_param;
+    sp_new->y = *it_y + 8;
+
+    PLW_PlaySoundEffectP(EFX_MAGIC);
+}
+
+void draw_demon()
+{
+    put_sprite4(demon[player_frames[*it_frame]], *it_x, *it_y, 3, *it_param & 128);
+    erase_sprite(*it_ox, *it_oy, 3);
+}
+
+void update_demon()
+{
+    if ((*it_delay)++ == 2 || *it_delay == 11)
+    {
+        *it_delay = 0;
+        if (++(*it_frame) > WALK_CYCLE)
+            *it_frame = WALK;
+    }
+
+    if (*it_extra < 72)
+        *it_extra += 1;
+    else if (abs_sub(py, *it_y) < 8 &&
+             (*it_param && px > *it_x || !*it_param && px < *it_x))
+    {
+        new_fireball();
+        *it_extra = 0;
+
+        *it_frame = WALK_CYCLE;
+        *it_delay = 3;
+    }
+
+    if (*it_param)
+    {
+        if (is_map_blocked(*it_x + 11, *it_y + 8)
+                || !is_map_blocked(*it_x + 11, *it_y + 24)
+                || *it_x > TW * TMW - 8 - 4)
+            goto demon_change_dir;
+        else
+            *it_x += 1;
+    }
+    else
+    {
+        if (is_map_blocked(*it_x - 4, *it_y + 8)
+                || !is_map_blocked(*it_x - 4, *it_y + 24)
+                || *it_x < 4)
+            goto demon_change_dir;
+        else
+            *it_x -= 1;
+    }
+
+    if (check_for_player(24))
+    {
+        player_hit(1);
+demon_change_dir:
+        *it_param ^= 128;
+        *it_delay = 0;
+        *it_frame = WALK;
+    }
+}