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     return;
  99   }
 100
 101   // hit left or right
 102   switch(ice_state) {
 103     case ICESTATE_NORMAL:
 104       WalkingBadguy::collision_solid(hit);
 105       break;
 106     case ICESTATE_KICKED: {
 107       if((hit.right && dir == RIGHT) || (hit.left && dir == LEFT)) {
 108         dir = (dir == LEFT) ? RIGHT : LEFT;
 109         sound_manager->play("sounds/iceblock_bump.wav", get_pos());
 110         physic.set_velocity_x(-physic.get_velocity_x()*.975);
 111       }
 112       sprite->set_action(dir == LEFT ? "flat-left" : "flat-right");
 113       if(fabsf(physic.get_velocity_x()) < walk_speed*1.5)
 114         set_state(ICESTATE_NORMAL);
 115       break;
 116     }
 117     case ICESTATE_FLAT:
 118       physic.set_velocity_x(0);
 119       break;
 120     case ICESTATE_GRABBED:
 121       break;
 122   }
 123 }
 124
 125 HitResponse
 126 MrIceBlock::collision(GameObject& object, const CollisionHit& hit)
 127 {
 128   if(ice_state == ICESTATE_GRABBED)
 129     return FORCE_MOVE;
 130
 131   return BadGuy::collision(object, hit);
 132 }
 133
 134 HitResponse
 135 MrIceBlock::collision_player(Player& player, const CollisionHit& hit)
 136 {
 137   // handle kicks from left or right side
 138   if(ice_state == ICESTATE_FLAT && get_state() == STATE_ACTIVE) {
 139     if(hit.left) {
 140       dir = RIGHT;
 141       player.kick();
 142       set_state(ICESTATE_KICKED);
 143       return FORCE_MOVE;
 144     } else if(hit.right) {
 145       dir = LEFT;
 146       player.kick();
 147       set_state(ICESTATE_KICKED);
 148       return FORCE_MOVE;
 149     }
 150   }
 151
 152   return BadGuy::collision_player(player, hit);
 153 }
 154
 155 HitResponse
 156 MrIceBlock::collision_badguy(BadGuy& badguy, const CollisionHit& hit)
 157 {
 158   switch(ice_state) {
 159     case ICESTATE_NORMAL:
 160       return WalkingBadguy::collision_badguy(badguy, hit);
 161     case ICESTATE_FLAT:
 162       return FORCE_MOVE;
 163     case ICESTATE_KICKED:
 164       badguy.kill_fall();
 165       return FORCE_MOVE;
 166     default:
 167       assert(false);
 168   }
 169
 170   return ABORT_MOVE;
 171 }
 172
 173 bool
 174 MrIceBlock::collision_squished(GameObject& object)
 175 {
 176   Player* player = dynamic_cast<Player*>(&object);
 177   if(player && (player->does_buttjump || player->is_invincible())) {
 178     player->bounce(*this);
 179     kill_fall();
 180     return true;
 181   }
 182
 183   switch(ice_state) {
 184     case ICESTATE_KICKED:
 185     {
 186       BadGuy* badguy = dynamic_cast<BadGuy*>(&object);
 187       if (badguy) {
 188         badguy->kill_fall();
 189         break;
 190       }
 191     }
 192
 193     // fall through
 194     case ICESTATE_NORMAL:
 195     {
 196       squishcount++;
 197       if (squishcount >= MAXSQUISHES) {
 198         kill_fall();
 199         return true;
 200       }
 201     }
 202
 203     set_state(ICESTATE_FLAT);
 204     nokick_timer.start(NOKICK_TIME);
 205     break;
 206     case ICESTATE_FLAT:
 207     {
 208       MovingObject* movingobject = dynamic_cast<MovingObject*>(&object);
 209       if (movingobject && (movingobject->get_pos().x < get_pos().x)) {
 210         dir = RIGHT;
 211       } else {
 212         dir = LEFT;
 213       }
 214     }
 215     if (nokick_timer.check()) set_state(ICESTATE_KICKED);
 216     break;
 217     case ICESTATE_GRABBED:
 218       assert(false);
 219       break;
 220   }
 221
 222   if (player) player->bounce(*this);
 223   return true;
 224 }
 225
 226 void
 227 MrIceBlock::set_state(IceState state, bool up)
 228 {
 229   if(ice_state == state)
 230     return;
 231
 232   switch(state) {
 233     case ICESTATE_NORMAL:
 234       WalkingBadguy::initialize();
 235       break;
 236     case ICESTATE_FLAT:
 237       if(up) {
 238         physic.set_velocity_y(-KICKSPEED);
 239       } else {
 240         sound_manager->play("sounds/stomp.wav", get_pos());
 241         physic.set_velocity_x(0);
 242         physic.set_velocity_y(0);
 243       }
 244       sprite->set_action(dir == LEFT ? "flat-left" : "flat-right");
 245       flat_timer.start(4);
 246       break;
 247     case ICESTATE_KICKED:
 248       sound_manager->play("sounds/kick.wav", get_pos());
 249
 250       physic.set_velocity_x(dir == LEFT ? -KICKSPEED : KICKSPEED);
 251       sprite->set_action(dir == LEFT ? "flat-left" : "flat-right");
 252       // we should slide above 1 block holes now...
 253       bbox.set_size(34, 31.8f);
 254       break;
 255     case ICESTATE_GRABBED:
 256       flat_timer.stop();
 257       break;
 258     default:
 259       assert(false);
 260   }
 261   ice_state = state;
 262 }
 263
 264 void
 265 MrIceBlock::grab(MovingObject&, const Vector& pos, Direction dir)
 266 {
 267   movement = pos - get_pos();
 268   this->dir = dir;
 269   sprite->set_action(dir == LEFT ? "flat-left" : "flat-right");
 270   set_state(ICESTATE_GRABBED);
 271   set_colgroup_active(COLGROUP_DISABLED);
 272 }
 273
 274 void
 275 MrIceBlock::ungrab(MovingObject& , Direction dir)
 276 {
 277   if(dir == UP) {
 278     set_state(ICESTATE_FLAT, true);
 279   } else {
 280     this->dir = dir;
 281     set_state(ICESTATE_KICKED);
 282   }
 283   set_colgroup_active(COLGROUP_MOVING);
 284 }
 285
 286 bool
 287 MrIceBlock::is_portable() const
 288 {
 289   return ice_state == ICESTATE_FLAT;
 290 }
 291
 292 /* EOF */