src/badguy/mriceblock.cpp

   1 //  SuperTux
   2 //  Copyright (C) 2006 Matthias Braun <matze@braunis.de>
   3 //
   4 //  This program is free software: you can redistribute it and/or modify
   5 //  it under the terms of the GNU General Public License as published by
   6 //  the Free Software Foundation, either version 3 of the License, or
   7 //  (at your option) any later version.
   8 //
   9 //  This program is distributed in the hope that it will be useful,
  10 //  but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 //  GNU General Public License for more details.
  13 //
  14 //  You should have received a copy of the GNU General Public License
  15 //  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16
  17 #include "badguy/mriceblock.hpp"
  18
  19 #include "audio/sound_manager.hpp"
  20 #include "object/player.hpp"
  21 #include "sprite/sprite.hpp"
  22 #include "supertux/object_factory.hpp"
  23
  24 #include <math.h>
  25
  26 namespace {
  27 const float KICKSPEED = 500;
  28 const int MAXSQUISHES = 10;
  29 const float NOKICK_TIME = 0.1f;
  30 }
  31
  32 MrIceBlock::MrIceBlock(const Reader& reader) :
  33   WalkingBadguy(reader, "images/creatures/mr_iceblock/mr_iceblock.sprite", "left", "right"),
  34   ice_state(ICESTATE_NORMAL),
  35   nokick_timer(),
  36   flat_timer(),
  37   squishcount(0)
  38 {
  39   walk_speed = 80;
  40   max_drop_height = 600;
  41   sound_manager->preload("sounds/iceblock_bump.wav");
  42   sound_manager->preload("sounds/stomp.wav");
  43   sound_manager->preload("sounds/kick.wav");
  44 }
  45
  46 MrIceBlock::MrIceBlock(const Vector& pos, Direction d) :
  47   WalkingBadguy(pos, d, "images/creatures/mr_iceblock/mr_iceblock.sprite", "left", "right"),
  48   ice_state(ICESTATE_NORMAL),
  49   nokick_timer(),
  50   flat_timer(),
  51   squishcount(0)
  52 {
  53   walk_speed = 80;
  54   max_drop_height = 600;
  55   sound_manager->preload("sounds/iceblock_bump.wav");
  56   sound_manager->preload("sounds/stomp.wav");
  57   sound_manager->preload("sounds/kick.wav");
  58 }
  59
  60 void
  61 MrIceBlock::initialize()
  62 {
  63   WalkingBadguy::initialize();
  64   set_state(ICESTATE_NORMAL);
  65 }
  66
  67 void
  68 MrIceBlock::active_update(float elapsed_time)
  69 {
  70   if(ice_state == ICESTATE_GRABBED)
  71     return;
  72
  73   if(ice_state == ICESTATE_FLAT && flat_timer.check()) {
  74     set_state(ICESTATE_NORMAL);
  75   }
  76
  77   if (ice_state == ICESTATE_NORMAL)
  78   {
  79     WalkingBadguy::active_update(elapsed_time);
  80     return;
  81   }
  82
  83   BadGuy::active_update(elapsed_time);
  84 }
  85
  86 bool
  87 MrIceBlock::can_break(){
  88   return ice_state == ICESTATE_KICKED;
  89 }
  90
  91 void
  92 MrIceBlock::collision_solid(const CollisionHit& hit)
  93 {
  94   update_on_ground_flag(hit);
  95
  96   if(hit.top || hit.bottom) { // floor or roof
  97     physic.set_velocity_y(0);
  98   }
  99
 100   // hit left or right
 101   switch(ice_state) {
 102     case ICESTATE_NORMAL:
 103       WalkingBadguy::collision_solid(hit);
 104       break;
 105     case ICESTATE_KICKED: {
 106       if((hit.right && dir == RIGHT) || (hit.left && dir == LEFT)) {
 107         dir = (dir == LEFT) ? RIGHT : LEFT;
 108         sound_manager->play("sounds/iceblock_bump.wav", get_pos());
 109         physic.set_velocity_x(-physic.get_velocity_x()*.975);
 110       }
 111       this->set_action(dir == LEFT ? "flat-left" : "flat-right", /* loops = */ -1);
 112       if(fabsf(physic.get_velocity_x()) < walk_speed*1.5)
 113         set_state(ICESTATE_NORMAL);
 114       break;
 115     }
 116     case ICESTATE_FLAT:
 117       physic.set_velocity_x(0);
 118       break;
 119     case ICESTATE_GRABBED:
 120       break;
 121   }
 122 }
 123
 124 HitResponse
 125 MrIceBlock::collision(GameObject& object, const CollisionHit& hit)
 126 {
 127   if(ice_state == ICESTATE_GRABBED)
 128     return FORCE_MOVE;
 129
 130   return BadGuy::collision(object, hit);
 131 }
 132
 133 HitResponse
 134 MrIceBlock::collision_player(Player& player, const CollisionHit& hit)
 135 {
 136   // handle kicks from left or right side
 137   if(ice_state == ICESTATE_FLAT && get_state() == STATE_ACTIVE) {
 138     if(hit.left) {
 139       dir = RIGHT;
 140       player.kick();
 141       set_state(ICESTATE_KICKED);
 142       return FORCE_MOVE;
 143     } else if(hit.right) {
 144       dir = LEFT;
 145       player.kick();
 146       set_state(ICESTATE_KICKED);
 147       return FORCE_MOVE;
 148     }
 149   }
 150
 151   return BadGuy::collision_player(player, hit);
 152 }
 153
 154 HitResponse
 155 MrIceBlock::collision_badguy(BadGuy& badguy, const CollisionHit& hit)
 156 {
 157   switch(ice_state) {
 158     case ICESTATE_NORMAL:
 159       return WalkingBadguy::collision_badguy(badguy, hit);
 160     case ICESTATE_FLAT:
 161       return FORCE_MOVE;
 162     case ICESTATE_KICKED:
 163       badguy.kill_fall();
 164       return FORCE_MOVE;
 165     default:
 166       assert(false);
 167   }
 168
 169   return ABORT_MOVE;
 170 }
 171
 172 bool
 173 MrIceBlock::collision_squished(GameObject& object)
 174 {
 175   Player* player = dynamic_cast<Player*>(&object);
 176   if(player && (player->does_buttjump || player->is_invincible())) {
 177     player->bounce(*this);
 178     kill_fall();
 179     return true;
 180   }
 181
 182   switch(ice_state) {
 183     case ICESTATE_KICKED:
 184     {
 185       BadGuy* badguy = dynamic_cast<BadGuy*>(&object);
 186       if (badguy) {
 187         badguy->kill_fall();
 188         break;
 189       }
 190     }
 191
 192     // fall through
 193     case ICESTATE_NORMAL:
 194     {
 195       squishcount++;
 196       if (squishcount >= MAXSQUISHES) {
 197         kill_fall();
 198         return true;
 199       }
 200     }
 201
 202     set_state(ICESTATE_FLAT);
 203     nokick_timer.start(NOKICK_TIME);
 204     break;
 205     case ICESTATE_FLAT:
 206     {
 207       MovingObject* movingobject = dynamic_cast<MovingObject*>(&object);
 208       if (movingobject && (movingobject->get_pos().x < get_pos().x)) {
 209         dir = RIGHT;
 210       } else {
 211         dir = LEFT;
 212       }
 213     }
 214     if (nokick_timer.check()) set_state(ICESTATE_KICKED);
 215     break;
 216     case ICESTATE_GRABBED:
 217       assert(false);
 218       break;
 219   }
 220
 221   if (player) player->bounce(*this);
 222   return true;
 223 }
 224
 225 void
 226 MrIceBlock::set_state(IceState state, bool up)
 227 {
 228   if(ice_state == state)
 229     return;
 230
 231   switch(state) {
 232     case ICESTATE_NORMAL:
 233       WalkingBadguy::initialize();
 234       break;
 235     case ICESTATE_FLAT:
 236       if(up) {
 237         physic.set_velocity_y(-KICKSPEED);
 238       } else {
 239         sound_manager->play("sounds/stomp.wav", get_pos());
 240         physic.set_velocity_x(0);
 241         physic.set_velocity_y(0);
 242       }
 243       this->set_action(dir == LEFT ? "flat-left" : "flat-right", /* loops = */ -1);
 244       flat_timer.start(4);
 245       break;
 246     case ICESTATE_KICKED:
 247       sound_manager->play("sounds/kick.wav", get_pos());
 248
 249       physic.set_velocity_x(dir == LEFT ? -KICKSPEED : KICKSPEED);
 250       this->set_action(dir == LEFT ? "flat-left" : "flat-right", /* loops = */ -1);
 251       // we should slide above 1 block holes now...
 252       bbox.set_size(34, 31.8f);
 253       break;
 254     case ICESTATE_GRABBED:
 255       flat_timer.stop();
 256       break;
 257     default:
 258       assert(false);
 259   }
 260   ice_state = state;
 261 }
 262
 263 void
 264 MrIceBlock::grab(MovingObject&, const Vector& pos, Direction dir)
 265 {
 266   movement = pos - get_pos();
 267   this->dir = dir;
 268   this->set_action(dir == LEFT ? "flat-left" : "flat-right", /* loops = */ -1);
 269   set_state(ICESTATE_GRABBED);
 270   set_colgroup_active(COLGROUP_DISABLED);
 271 }
 272
 273 void
 274 MrIceBlock::ungrab(MovingObject& , Direction dir)
 275 {
 276   if(dir == UP) {
 277     set_state(ICESTATE_FLAT, true);
 278   } else {
 279     this->dir = dir;
 280     set_state(ICESTATE_KICKED);
 281   }
 282   set_colgroup_active(COLGROUP_MOVING);
 283 }
 284
 285 bool
 286 MrIceBlock::is_portable() const
 287 {
 288   return ice_state == ICESTATE_FLAT;
 289 }
 290
 291 /* EOF */