src/badguy/mriceblock.cpp

   1 //  $Id$
   2 //
   3 //  SuperTux
   4 //  Copyright (C) 2005 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
  19 //  02111-1307, USA.
  20
  21 #include <config.h>
  22
  23 #include "mriceblock.hpp"
  24 #include "object/block.hpp"
  25
  26 static const float WALKSPEED = 80;
  27 static const float KICKSPEED = 500;
  28 static const int MAXSQUISHES = 10;
  29
  30 MrIceBlock::MrIceBlock(const lisp::Lisp& reader)
  31   : ice_state(ICESTATE_NORMAL), squishcount(0)
  32 {
  33   reader.get("x", start_position.x);
  34   reader.get("y", start_position.y);
  35   reader.get("stay-on-platform", stay_on_platform);
  36   bbox.set_size(31.8, 31.8);
  37   sprite = sprite_manager->create("mriceblock");
  38   set_direction = false;
  39 }
  40
  41 MrIceBlock::MrIceBlock(float pos_x, float pos_y, Direction d)
  42   : ice_state(ICESTATE_NORMAL), squishcount(0)
  43 {
  44   start_position.x = pos_x;
  45   start_position.y = pos_y;
  46   bbox.set_size(31.8, 31.8);
  47   sprite = sprite_manager->create("mriceblock");
  48   set_direction = true;
  49   initial_direction = d;
  50 }
  51
  52 void
  53 MrIceBlock::write(lisp::Writer& writer)
  54 {
  55   writer.start_list("mriceblock");
  56
  57   writer.write_float("x", start_position.x);
  58   writer.write_float("y", start_position.y);
  59
  60   writer.end_list("mriceblock");
  61 }
  62
  63 void
  64 MrIceBlock::activate()
  65 {
  66   if (set_direction) {
  67     dir = initial_direction;
  68   }
  69
  70   physic.set_velocity_x(dir == LEFT ? -WALKSPEED : WALKSPEED);
  71   sprite->set_action(dir == LEFT ? "left" : "right");
  72 }
  73
  74 void
  75 MrIceBlock::active_update(float elapsed_time)
  76 {
  77   if(ice_state == ICESTATE_GRABBED)
  78     return;
  79
  80   if(ice_state == ICESTATE_FLAT && flat_timer.check()) {
  81     set_state(ICESTATE_NORMAL);
  82   }
  83
  84   if (ice_state == ICESTATE_NORMAL &&
  85       stay_on_platform &&
  86       may_fall_off_platform())
  87   {
  88     dir = (dir == LEFT ? RIGHT : LEFT);
  89     sprite->set_action(dir == LEFT ? "left" : "right");
  90     physic.set_velocity_x(-physic.get_velocity_x());
  91   }
  92
  93   BadGuy::active_update(elapsed_time);
  94 }
  95
  96 HitResponse
  97 MrIceBlock::collision_solid(GameObject& object, const CollisionHit& hit)
  98 {
  99   if(fabsf(hit.normal.y) > .5) { // floor or roof
 100     physic.set_velocity_y(0);
 101     return CONTINUE;
 102   }
 103   // hit left or right
 104   switch(ice_state) {
 105     case ICESTATE_NORMAL:
 106       dir = dir == LEFT ? RIGHT : LEFT;
 107       sprite->set_action(dir == LEFT ? "left" : "right");
 108       physic.set_velocity_x(-physic.get_velocity_x());
 109       break;
 110     case ICESTATE_KICKED: {
 111       BonusBlock* bonusblock = dynamic_cast<BonusBlock*> (&object);
 112       if(bonusblock) {
 113         bonusblock->try_open();
 114       }
 115       Brick* brick = dynamic_cast<Brick*> (&object);
 116       if(brick) {
 117         brick->try_break();
 118       }
 119
 120       dir = dir == LEFT ? RIGHT : LEFT;
 121       sprite->set_action(dir == LEFT ? "flat-left" : "flat-right");
 122       physic.set_velocity_x(-physic.get_velocity_x());
 123       sound_manager->play("sounds/iceblock_bump.wav", get_pos());
 124       break;
 125     }
 126     case ICESTATE_FLAT:
 127       physic.set_velocity_x(0);
 128       break;
 129     case ICESTATE_GRABBED:
 130       return FORCE_MOVE;
 131   }
 132
 133   return CONTINUE;
 134 }
 135
 136 HitResponse
 137 MrIceBlock::collision(GameObject& object, const CollisionHit& hit)
 138 {
 139   if(ice_state == ICESTATE_GRABBED)
 140     return FORCE_MOVE;
 141
 142   return BadGuy::collision(object, hit);
 143 }
 144
 145 HitResponse
 146 MrIceBlock::collision_player(Player& player, const CollisionHit& hit)
 147 {
 148   if(ice_state == ICESTATE_GRABBED)
 149     return FORCE_MOVE;
 150
 151   // handle kicks from left or right side
 152   if(ice_state == ICESTATE_FLAT && get_state() == STATE_ACTIVE) {
 153     // hit from left side
 154     if(hit.normal.x > 0.7) {
 155       dir = RIGHT;
 156       player.kick();
 157       set_state(ICESTATE_KICKED);
 158       return FORCE_MOVE;
 159     } else if(hit.normal.x < -0.7) {
 160       dir = LEFT;
 161       player.kick();
 162       set_state(ICESTATE_KICKED);
 163       return FORCE_MOVE;
 164     }
 165   }
 166
 167   return BadGuy::collision_player(player, hit);
 168 }
 169
 170 HitResponse
 171 MrIceBlock::collision_badguy(BadGuy& badguy, const CollisionHit& hit)
 172 {
 173   switch(ice_state) {
 174     case ICESTATE_NORMAL:
 175       if(fabsf(hit.normal.x) > .8) {
 176         dir = dir == LEFT ? RIGHT : LEFT;
 177         sprite->set_action(dir == LEFT ? "left" : "right");
 178         physic.set_velocity_x(-physic.get_velocity_x());
 179       }
 180       return CONTINUE;
 181     case ICESTATE_FLAT:
 182       return FORCE_MOVE;
 183     case ICESTATE_KICKED:
 184       badguy.kill_fall();
 185       return FORCE_MOVE;
 186     default:
 187       assert(false);
 188   }
 189
 190   return ABORT_MOVE;
 191 }
 192
 193 bool
 194 MrIceBlock::collision_squished(Player& player)
 195 {
 196   switch(ice_state) {
 197     case ICESTATE_KICKED:
 198     case ICESTATE_NORMAL:
 199       squishcount++;
 200       if(squishcount >= MAXSQUISHES) {
 201         kill_fall();
 202         return true;
 203       }
 204
 205       set_state(ICESTATE_FLAT);
 206       break;
 207     case ICESTATE_FLAT:
 208       if(player.get_pos().x < get_pos().x) {
 209         dir = RIGHT;
 210       } else {
 211         dir = LEFT;
 212       }
 213       set_state(ICESTATE_KICKED);
 214       break;
 215     case ICESTATE_GRABBED:
 216       assert(false);
 217       break;
 218   }
 219
 220   player.bounce(*this);
 221   return true;
 222 }
 223
 224 void
 225 MrIceBlock::set_state(IceState state)
 226 {
 227   if(ice_state == state)
 228     return;
 229
 230   if(state == ICESTATE_FLAT)
 231     flags |= FLAG_PORTABLE;
 232   else
 233     flags &= ~FLAG_PORTABLE;
 234
 235   if(ice_state == ICESTATE_KICKED) {
 236     bbox.set_size(31.8, 31.8);
 237   }
 238
 239   switch(state) {
 240     case ICESTATE_NORMAL:
 241       physic.set_velocity_x(dir == LEFT ? -WALKSPEED : WALKSPEED);
 242       sprite->set_action(dir == LEFT ? "left" : "right");
 243       break;
 244     case ICESTATE_FLAT:
 245       sound_manager->play("sounds/stomp.wav", get_pos());
 246       physic.set_velocity_x(0);
 247       physic.set_velocity_y(0);
 248
 249       sprite->set_action(dir == LEFT ? "flat-left" : "flat-right");
 250       flat_timer.start(4);
 251       break;
 252     case ICESTATE_KICKED:
 253       sound_manager->play("sounds/kick.wav", get_pos());
 254
 255       physic.set_velocity_x(dir == LEFT ? -KICKSPEED : KICKSPEED);
 256       sprite->set_action(dir == LEFT ? "flat-left" : "flat-right");
 257       // we should slide above 1 block holes now...
 258       bbox.set_size(34, 31.8);
 259       break;
 260     case ICESTATE_GRABBED:
 261       flat_timer.stop();
 262       break;
 263     default:
 264       assert(false);
 265   }
 266   ice_state = state;
 267 }
 268
 269 void
 270 MrIceBlock::grab(MovingObject&, const Vector& pos, Direction dir)
 271 {
 272   movement = pos - get_pos();
 273   this->dir = dir;
 274   sprite->set_action(dir == LEFT ? "flat-left" : "flat-right");
 275   set_state(ICESTATE_GRABBED);
 276   set_group(COLGROUP_DISABLED);
 277 }
 278
 279 void
 280 MrIceBlock::ungrab(MovingObject& , Direction dir)
 281 {
 282   this->dir = dir;
 283   set_state(ICESTATE_KICKED);
 284   set_group(COLGROUP_MOVING);
 285 }
 286
 287 IMPLEMENT_FACTORY(MrIceBlock, "mriceblock")