First tries at making platform scriptable
[supertux.git] / src / object / platform.cpp
1 //  $Id$
2 //
3 //  SuperTux
4 //  Copyright (C) 2006 Matthias Braun <matze@braunis.de>
5 //
6 //  This program is free software; you can redistribute it and/or
7 //  modify it under the terms of the GNU General Public License
8 //  as published by the Free Software Foundation; either version 2
9 //  of the License, or (at your option) any later version.
10 //
11 //  This program is distributed in the hope that it will be useful,
12 //  but WITHOUT ANY WARRANTY; without even the implied warranty of
13 //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14 //  GNU General Public License for more details.
15 //
16 //  You should have received a copy of the GNU General Public License
17 //  along with this program; if not, write to the Free Software
18 //  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
19
20 #include <config.h>
21
22 #include "platform.hpp"
23
24 #include <stdexcept>
25 #include "log.hpp"
26 #include "video/drawing_context.hpp"
27 #include "resources.hpp"
28 #include "player.hpp"
29 #include "path.hpp"
30 #include "path_walker.hpp"
31 #include "sprite/sprite.hpp"
32 #include "lisp/lisp.hpp"
33 #include "object_factory.hpp"
34 #include "scripting/platform.hpp"
35 #include "scripting/squirrel_util.hpp"
36
37 Platform::Platform(const lisp::Lisp& reader)
38         : MovingSprite(reader, Vector(0,0), LAYER_OBJECTS, COLGROUP_STATIC), speed(Vector(0,0))
39 {
40   const lisp::Lisp* pathLisp = reader.get_lisp("path");
41   if(pathLisp == NULL)
42     throw std::runtime_error("No path specified for platform");
43   path.reset(new Path());
44   path->read(*pathLisp);
45   walker.reset(new PathWalker(path.get()));
46   bbox.set_pos(path->get_base());
47  
48   flags |= FLAG_SOLID;
49 }
50
51 Platform::Platform(const Platform& other)
52         : MovingSprite(other), ScriptInterface(other), speed(other.speed)
53 {
54   path.reset(new Path(*other.path));
55   walker.reset(new PathWalker(*other.walker));
56   walker->path = &*path;
57 }
58
59 //TODO: Squish Tux when standing between platform and solid tile/object
60 //      Improve collision handling
61 //      Move all MovingObjects lying on the platform instead of only the player
62 HitResponse
63 Platform::collision(GameObject& other, const CollisionHit& hit)
64 {
65   if (typeid(other) == typeid(Player)) {
66     if (hit.normal.y >= 0.9) {
67       //Tux is standing on the platform
68       //Player* player = (Player*) &other;
69       //player->add_velocity(speed * 1.5);
70       return PASS_MOVEMENT;
71     }
72   }
73   if(other.get_flags() & FLAG_SOLID) {
74     //Collision with a solid tile
75     return ABORT_MOVE;
76   }
77   return FORCE_MOVE;
78 }
79
80 void
81 Platform::update(float elapsed_time)
82 {
83   movement = walker->advance(elapsed_time);
84   speed = movement / elapsed_time;
85 }
86
87 void
88 Platform::goto_node(int node_no)
89 {
90   walker->goto_node(node_no);
91 }
92
93 void
94 Platform::start_moving()
95 {
96   walker->start_moving();
97 }
98
99 void
100 Platform::stop_moving()
101 {
102   walker->stop_moving();
103 }
104
105 void
106 Platform::expose(HSQUIRRELVM vm, SQInteger table_idx)
107 {
108   Scripting::Platform* interface = new Scripting::Platform(this);
109   expose_object(vm, table_idx, interface, "Platform", true);
110 }
111
112 void
113 Platform::unexpose(HSQUIRRELVM vm, SQInteger table_idx)
114 {
115   Scripting::unexpose_object(vm, table_idx, "Platform");
116 }
117
118 IMPLEMENT_FACTORY(Platform, "platform");