src/badguy/walking_badguy.cpp

   1 //  $Id$
   2 //
   3 //  SuperTux - WalkingBadguy
   4 //  Copyright (C) 2006 Christoph Sommer <christoph.sommer@2006.expires.deltadevelopment.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 "walking_badguy.hpp"
  23 #include "log.hpp"
  24
  25
  26 WalkingBadguy::WalkingBadguy(const Vector& pos, const std::string& sprite_name, const std::string& walk_left_action, const std::string& walk_right_action, int layer)
  27         : BadGuy(pos, sprite_name, layer), walk_left_action(walk_left_action), walk_right_action(walk_right_action), walk_speed(80), max_drop_height(-1)
  28 {
  29 }
  30
  31 WalkingBadguy::WalkingBadguy(const Vector& pos, Direction direction, const std::string& sprite_name, const std::string& walk_left_action, const std::string& walk_right_action, int layer)
  32         : BadGuy(pos, direction, sprite_name, layer), walk_left_action(walk_left_action), walk_right_action(walk_right_action), walk_speed(80), max_drop_height(-1)
  33 {
  34 }
  35
  36 WalkingBadguy::WalkingBadguy(const lisp::Lisp& reader, const std::string& sprite_name, const std::string& walk_left_action, const std::string& walk_right_action, int layer)
  37         : BadGuy(reader, sprite_name, layer), walk_left_action(walk_left_action), walk_right_action(walk_right_action), walk_speed(80), max_drop_height(-1)
  38 {
  39 }
  40
  41 void
  42 WalkingBadguy::write(lisp::Writer& writer)
  43 {
  44   writer.write_float("x", start_position.x);
  45   writer.write_float("y", start_position.y);
  46 }
  47
  48 void
  49 WalkingBadguy::activate()
  50 {
  51   sprite->set_action(dir == LEFT ? walk_left_action : walk_right_action);
  52   bbox.set_size(sprite->get_current_hitbox_width(), sprite->get_current_hitbox_height());
  53   physic.set_velocity_x(dir == LEFT ? -walk_speed : walk_speed);
  54 }
  55
  56 void
  57 WalkingBadguy::active_update(float elapsed_time)
  58 {
  59   BadGuy::active_update(elapsed_time);
  60
  61   if (max_drop_height > -1) {
  62     if (on_ground() && might_fall(max_drop_height+1))
  63     {
  64       turn_around();
  65     }
  66   }
  67
  68 }
  69
  70 void
  71 WalkingBadguy::collision_solid(const CollisionHit& hit)
  72 {
  73
  74   update_on_ground_flag(hit);
  75
  76   if (hit.top || hit.bottom) {
  77     physic.set_velocity_y(0);
  78   }
  79
  80   if ((hit.left && dir == LEFT) || (hit.right && dir == RIGHT)) {
  81     turn_around();
  82   }
  83
  84 }
  85
  86 HitResponse
  87 WalkingBadguy::collision_badguy(BadGuy& , const CollisionHit& hit)
  88 {
  89
  90   if ((hit.left && (dir == LEFT)) || (hit.right && (dir == RIGHT))) {
  91     turn_around();
  92   }
  93
  94   return CONTINUE;
  95 }
  96
  97 void
  98 WalkingBadguy::turn_around()
  99 {
 100   dir = dir == LEFT ? RIGHT : LEFT;
 101   sprite->set_action(dir == LEFT ? walk_left_action : walk_right_action);
 102   physic.set_velocity_x(dir == LEFT ? -walk_speed : walk_speed);
 103 }