X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=src%2Fcollision.h;h=4d47171eaff9f6e0bfdf7d841f43a9829a3d72d1;hb=9eb163ab4f72fad234d47e9446f5608d1c5c02dc;hp=17243140148a8686e1a1fe50974935816979eb6c;hpb=5a4d8ffad3b172eae67844deda6b65273b7c9757;p=oweals%2Fminetest.git

diff --git a/src/collision.h b/src/collision.h
index 172431401..4d47171ea 100644
--- a/src/collision.h
+++ b/src/collision.h
@@ -1,43 +1,77 @@
 /*
-Minetest-c55
-Copyright (C) 2010 celeron55, Perttu Ahola <celeron55@gmail.com>
+Minetest
+Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
 
 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
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 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.
+GNU Lesser General Public License for more details.
 
-You should have received a copy of the GNU General Public License along
+You should have received a copy of the GNU Lesser General Public License along
 with this program; if not, write to the Free Software Foundation, Inc.,
 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
 
-#ifndef COLLISION_HEADER
-#define COLLISION_HEADER
+#pragma once
 
-#include "common_irrlicht.h"
+#include "irrlichttypes_bloated.h"
+#include <vector>
 
 class Map;
+class IGameDef;
+class Environment;
+class ActiveObject;
 
-struct collisionMoveResult
+enum CollisionType
+{
+	COLLISION_NODE,
+	COLLISION_OBJECT,
+};
+
+struct CollisionInfo
 {
-	bool touching_ground;
+	CollisionInfo() = default;
 
-	collisionMoveResult():
-		touching_ground(false)
-	{}
+	CollisionType type = COLLISION_NODE;
+	v3s16 node_p = v3s16(-32768,-32768,-32768); // COLLISION_NODE
+	v3f old_speed;
+	v3f new_speed;
 };
 
-collisionMoveResult collisionMoveSimple(Map *map, f32 pos_max_d,
-		const core::aabbox3d<f32> &box_0,
-		f32 dtime, v3f &pos_f, v3f &speed_f);
-//{return collisionMoveResult();}
+struct collisionMoveResult
+{
+	collisionMoveResult() = default;
+
+	bool touching_ground = false;
+	bool collides = false;
+	bool standing_on_object = false;
+	std::vector<CollisionInfo> collisions;
+};
 
+// Moves using a single iteration; speed should not exceed pos_max_d/dtime
+collisionMoveResult collisionMoveSimple(Environment *env,IGameDef *gamedef,
+		f32 pos_max_d, const aabb3f &box_0,
+		f32 stepheight, f32 dtime,
+		v3f *pos_f, v3f *speed_f,
+		v3f accel_f, ActiveObject *self=NULL,
+		bool collideWithObjects=true);
 
-#endif
+// Helper function:
+// Checks for collision of a moving aabbox with a static aabbox
+// Returns -1 if no collision, 0 if X collision, 1 if Y collision, 2 if Z collision
+// dtime receives time until first collision, invalid if -1 is returned
+int axisAlignedCollision(
+		const aabb3f &staticbox, const aabb3f &movingbox,
+		const v3f &speed, f32 d, f32 *dtime);
 
+// Helper function:
+// Checks if moving the movingbox up by the given distance would hit a ceiling.
+bool wouldCollideWithCeiling(
+		const std::vector<aabb3f> &staticboxes,
+		const aabb3f &movingbox,
+		f32 y_increase, f32 d);