From 7f6002caba3f0a6749820c2772161caf55b8d267 Mon Sep 17 00:00:00 2001
From: neonloop
Date: Fri, 7 May 2021 20:00:12 +0000
Subject: Initial commit (uqm-0.8.0)

---
 src/uqm/collide.h | 70 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 70 insertions(+)
 create mode 100644 src/uqm/collide.h

(limited to 'src/uqm/collide.h')

diff --git a/src/uqm/collide.h b/src/uqm/collide.h
new file mode 100644
index 0000000..50cc5f1
--- /dev/null
+++ b/src/uqm/collide.h
@@ -0,0 +1,70 @@
+//Copyright Paul Reiche, Fred Ford. 1992-2002
+
+/*
+ *  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 2 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, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifndef UQM_COLLIDE_H_
+#define UQM_COLLIDE_H_
+
+#include "element.h"
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+#define COLLISION_TURN_WAIT 1
+#define COLLISION_THRUST_WAIT 3
+
+#define SKIP_COLLISION (NONSOLID | DISAPPEARING)
+#define CollidingElement(e) \
+		(!((e)->state_flags & SKIP_COLLISION))
+#define CollisionPossible(e0,e1) \
+		(CollidingElement (e0) \
+		&& (!(((e1)->state_flags & (e0)->state_flags) & COLLISION) \
+		&& ((!(((e1)->state_flags & (e0)->state_flags) & IGNORE_SIMILAR) \
+		|| (e1)->pParent != (e0)->pParent)) \
+		&& ((e1)->mass_points || (e0)->mass_points)))
+
+#define InitIntersectStartPoint(eptr) \
+{ \
+	(eptr)->IntersectControl.IntersectStamp.origin.x = \
+			WORLD_TO_DISPLAY ((eptr)->current.location.x); \
+	(eptr)->IntersectControl.IntersectStamp.origin.y = \
+			WORLD_TO_DISPLAY ((eptr)->current.location.y); \
+}
+
+#define InitIntersectEndPoint(eptr) \
+{ \
+	(eptr)->IntersectControl.EndPoint.x = \
+			WORLD_TO_DISPLAY ((eptr)->next.location.x); \
+	(eptr)->IntersectControl.EndPoint.y = \
+			WORLD_TO_DISPLAY ((eptr)->next.location.y); \
+}
+
+#define InitIntersectFrame(eptr) \
+{ \
+	(eptr)->IntersectControl.IntersectStamp.frame = \
+			 SetEquFrameIndex ((eptr)->next.image.farray[0], \
+			 (eptr)->next.image.frame); \
+}
+
+extern void collide (ELEMENT *ElementPtr0, ELEMENT *ElementPtr1);
+
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* UQM_COLLIDE_H_ */
-- 
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