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[supertux.git] / src / special.cpp
index 218751e..8d69815 100644 (file)
+//  $Id$
 //
-// C Implementation: special
+//  SuperTux -  A Jump'n Run
+//  Copyright (C) 2003 Tobias Glaesser <tobi.web@gmx.de>
 //
-// Description:
-//
-//
-// Author: Tobias Glaesser <tobi.web@gmx.de> & Bill Kendrick, (C) 2004
-//
-// Copyright: See COPYING file that comes with this distribution
+//  This program is free software; you can redistribute it and/or
+//  modify it under the terms of the GNU General Public License
+//  as published by the Free Software Foundation; either version 2
+//  of the License, or (at your option) any later version.
 //
+//  This program is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//  GNU General Public License for more details.
 //
+//  You should have received a copy of the GNU General Public License
+//  along with this program; if not, write to the Free Software
+//  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+
+#include <cassert>
+#include <iostream>
 
 #include "SDL.h"
+
 #include "defines.h"
 #include "special.h"
+#include "camera.h"
 #include "gameloop.h"
-#include "screen.h"
-#include "sound.h"
+#include "video/screen.h"
 #include "scene.h"
-#include "globals.h"
+#include "app/globals.h"
 #include "player.h"
+#include "sector.h"
+#include "special/sprite_manager.h"
 #include "resources.h"
 
-texture_type img_bullet;
-texture_type img_golden_herring;
-bitmask* bm_bullet;
+Sprite* img_firebullet;
+Sprite* img_icebullet;
+Sprite* img_star;
+Sprite* img_growup;
+Sprite* img_iceflower;
+Sprite* img_fireflower;
+Sprite* img_1up;
 
-void create_special_bitmasks()
-{
-  bm_bullet = bitmask_create_SDL(img_bullet.sdl_surface);
-}
+#define GROWUP_SPEED 1.0f
 
-void
-Bullet::init(float x, float y, float xm, int dir)
+#define BULLET_STARTING_YM 0
+#define BULLET_XM 6
+
+Bullet::Bullet(const Vector& pos, float xm, int dir, int kind_)
 {
+  life_count = 3;
   base.width = 4;
   base.height = 4;
+  
+  if (kind == ICE_BULLET)
+    life_count = 6; //ice-bullets get "extra lives" for bumping off walls
 
   if (dir == RIGHT)
     {
-      base.x = x + 32;
-      base.xm = BULLET_XM + xm;
+      base.x = pos.x + 32;
+      physic.set_velocity_x(BULLET_XM + xm);
     }
   else
     {
-      base.x = x;
-      base.xm = -BULLET_XM + xm;
+      base.x = pos.x;
+      physic.set_velocity_x(-BULLET_XM + xm);
     }
 
-  base.y = y;
-  base.ym = BULLET_STARTING_YM;
+  base.y = pos.y;
+  physic.set_velocity_y(-BULLET_STARTING_YM);
   old_base = base;
+  kind = kind_;
 }
 
 void
-Bullet::action()
+Bullet::action(float elapsed_time)
 {
-  base.x = base.x + base.xm * frame_ratio;
-  base.y = base.y + base.ym * frame_ratio;
+  elapsed_time *= 0.5f;
+
+  float old_y = base.y;
 
+  physic.apply(elapsed_time, base.x, base.y,  Sector::current()->gravity);
   collision_swept_object_map(&old_base,&base);
       
-  if (issolid(base.x, base.y + 4) || issolid(base.x, base.y))
+  if (issolid(base.x+2, base.y + 4) || issolid(base.x+2, base.y))
     {
-      base.ym = -base.ym;
-      base.y = (int)(base.y / 32) * 32;
+      base.y  = old_y;
+      physic.set_velocity_y(-physic.get_velocity_y());
+      life_count -= 1;
     }
 
-  base.ym = base.ym + GRAVITY;
-
+  if(kind == FIRE_BULLET)
+    // @not framerate independant :-/
+    physic.set_velocity_y(physic.get_velocity_y() - 0.5 * elapsed_time);
+  if(physic.get_velocity_y() > 9)
+    physic.set_velocity_y(9);
+  else if(physic.get_velocity_y() < -9)
+    physic.set_velocity_y(-9);
+
+  float scroll_x =
+    Sector::current()->camera->get_translation().x;
+  float scroll_y =
+    Sector::current()->camera->get_translation().y;
   if (base.x < scroll_x ||
       base.x > scroll_x + screen->w ||
-      base.y < 0 ||
-      base.y > screen->h ||
-      issolid(base.x + 4, base.y + 2) ||
-      issolid(base.x, base.y + 2))
+//      base.y < scroll_y ||
+      base.y > scroll_y + screen->h ||
+      life_count <= 0)
     {
-      World::current()->bullets.erase(static_cast<std::vector<Bullet>::iterator>(this));
+      remove_me();
     }
-
+  if (issolid(base.x + 4, base.y + 2) || 
+      issolid(base.x, base.y + 2))
+     {
+       if (kind == FIRE_BULLET)
+         remove_me();
+       else if (kind == ICE_BULLET)
+         {
+          physic.set_velocity_x(-physic.get_velocity_x());
+          //physic.set_velocity_y(-physic.get_velocity_y());
+        }
+     }
 }
 
 void 
-Bullet::draw()
+Bullet::draw(DrawingContext& context)
 {
-  if (base.x >= scroll_x - base.width &&
-      base.x <= scroll_x + screen->w)
-    {
-      texture_draw(&img_bullet, base.x - scroll_x, base.y, 255,
-                   NO_UPDATE);
-    }
+  Sprite* sprite = kind == FIRE_BULLET ? img_firebullet : img_icebullet;
+  sprite->draw(context, Vector(base.x, base.y), LAYER_OBJECTS);
+}
+
+void
+Bullet::collision(const MovingObject& , int)
+{
+  // later
 }
 
 void
 Bullet::collision(int c_object)
 {
   if(c_object == CO_BADGUY) {
-    std::vector<Bullet>::iterator i;
-    
-    for(i = World::current()->bullets.begin(); i != World::current()->bullets.end(); ++i) 
-      {
-        if(&(*i) == this) 
-          {
-            World::current()->bullets.erase(i);
-            return;
-          }
-      }
+    remove_me();
   }
 }
 
-void
-Upgrade::init(float x_, float y_, int dir_, int kind_)
+//---------------------------------------------------------------------------
+
+Upgrade::Upgrade(const Vector& pos, Direction dir_, UpgradeKind kind_)
 {
-  base.width = 32;
-  base.height = 0;
   kind = kind_;
-  base.x = x_;
-  base.y = y_;
-
-  if(dir_ == LEFT)
-    base.xm = -2;
-  else
-    base.xm = 2;
+  dir = dir_;
 
-  base.ym = -2;
+  base.width = 32;
   base.height = 0;
+  base.x = pos.x;
+  base.y = pos.y;
   old_base = base;
+
+  physic.reset();
+  physic.enable_gravity(false);
+
+  if(kind == UPGRADE_1UP || kind == UPGRADE_STAR) {
+    physic.set_velocity(dir == LEFT ? -1 : 1, 4);
+    physic.enable_gravity(true);
+    base.height = 32;
+  } else if (kind == UPGRADE_ICEFLOWER || kind == UPGRADE_FIREFLOWER) {
+    // nothing
+  } else if (kind == UPGRADE_GROWUP) {
+    physic.set_velocity(dir == LEFT ? -GROWUP_SPEED : GROWUP_SPEED, 0);
+  } else {
+    physic.set_velocity(dir == LEFT ? -2 : 2, 0);
+  }
+}
+
+Upgrade::~Upgrade()
+{
 }
 
 void
-Upgrade::action()
+Upgrade::action(float elapsed_time)
 {
-  if (base.height < 32)
-    {
+  if (kind == UPGRADE_ICEFLOWER || kind == UPGRADE_FIREFLOWER
+      || kind == UPGRADE_GROWUP) {
+    if (base.height < 32) {
       /* Rise up! */
-
-      base.height = base.height + 0.7 * frame_ratio;
+      base.height = base.height + 0.7 * elapsed_time;
       if(base.height > 32)
         base.height = 32;
+
+      return;
     }
-  else
+  }
+
+  /* Away from the screen? Kill it! */
+  float scroll_x =
+    Sector::current()->camera->get_translation().x;
+  float scroll_y =                                                        
+    Sector::current()->camera->get_translation().y;
+  
+  if(base.x < scroll_x - X_OFFSCREEN_DISTANCE ||
+      base.x > scroll_x + screen->w + X_OFFSCREEN_DISTANCE ||
+      base.y < scroll_y - Y_OFFSCREEN_DISTANCE ||
+      base.y > scroll_y + screen->h + Y_OFFSCREEN_DISTANCE)
     {
-      /* Move around? */
+    remove_me();
+    return;
+    }
 
-      if (kind == UPGRADE_MINTS ||
-          kind == UPGRADE_HERRING)
-        {
-          base.x = base.x + base.xm * frame_ratio;
-          base.y = base.y + base.ym * frame_ratio;
-
-          collision_swept_object_map(&old_base,&base);
-
-          /* Off the screen?  Kill it! */
-
-          if (base.x < scroll_x - base.width)
-            World::current()->upgrades.erase(static_cast<std::vector<Upgrade>::iterator>(this));
-          if (base.y > screen->h)
-            World::current()->upgrades.erase(static_cast<std::vector<Upgrade>::iterator>(this));
-
-          if (issolid(base.x + 1, base.y + 32.) ||
-              issolid(base.x + 31., base.y + 32.))
-            {
-              if (base.ym > 0)
-                {
-                  if (kind == UPGRADE_MINTS)
-                    {
-                      base.ym = 0;
-                    }
-                  else if (kind == UPGRADE_HERRING)
-                    {
-                      base.ym = -8;
-                    }
-
-                  base.y = (int)(base.y / 32) * 32;
-                }
-            }
-          else
-            base.ym = base.ym + GRAVITY * frame_ratio;
-
-          if (issolid(base.x - 1, (int) base.y))
-            {
-              if(base.xm < 0)
-                base.xm = -base.xm;
-            }
-          else if (issolid(base.x + base.width, (int) base.y))
-            {
-              if(base.xm > 0)
-                base.xm = -base.xm;
-            }
+  /* Move around? */
+  physic.apply(elapsed_time, base.x, base.y, Sector::current()->gravity);
+  if(kind == UPGRADE_GROWUP || kind == UPGRADE_STAR) {
+    collision_swept_object_map(&old_base, &base);
+  }
+
+  // fall down?
+  if(kind == UPGRADE_GROWUP || kind == UPGRADE_STAR) {
+    // falling?
+    if(physic.get_velocity_y() != 0) {
+      if(issolid(base.x, base.y + base.height)) {
+        base.y = int(base.y / 32) * 32;
+        old_base = base;                         
+        if(kind == UPGRADE_GROWUP) {
+          physic.enable_gravity(false);
+          physic.set_velocity(dir == LEFT ? -GROWUP_SPEED : GROWUP_SPEED, 0);
+        } else if(kind == UPGRADE_STAR) {
+          physic.set_velocity(dir == LEFT ? -2 : 2, 3);
         }
+      }
+    } else {
+      if((physic.get_velocity_x() < 0
+            && !issolid(base.x+base.width, base.y + base.height))
+        || (physic.get_velocity_x() > 0
+            && !issolid(base.x, base.y + base.height))) {
+        physic.enable_gravity(true);
+      }
+    }
+  }
 
+  // horizontal bounce?
+  if(kind == UPGRADE_GROWUP || kind == UPGRADE_STAR) {
+    if (  (physic.get_velocity_x() < 0
+          && issolid(base.x, (int) base.y + base.height/2)) 
+        ||  (physic.get_velocity_x() > 0
+          && issolid(base.x + base.width, (int) base.y + base.height/2))) {
+        physic.set_velocity(-physic.get_velocity_x(),physic.get_velocity_y());
+        dir = dir == LEFT ? RIGHT : LEFT;
     }
+  }
 }
 
 void
-Upgrade::draw()
+Upgrade::draw(DrawingContext& context)
 {
-  SDL_Rect dest;
-  if (base.height < 32)
-    {
-      /* Rising up... */
-
-      dest.x = (int)(base.x - scroll_x);
-      dest.y = (int)(base.y + 32 - base.height);
-      dest.w = 32;
-      dest.h = (int)base.height;
-
-      if (kind == UPGRADE_MINTS)
-        texture_draw_part(&img_mints,0,0,dest.x,dest.y,dest.w,dest.h);
-      else if (kind == UPGRADE_COFFEE)
-        texture_draw_part(&img_coffee,0,0,dest.x,dest.y,dest.w,dest.h);
-      else if (kind == UPGRADE_HERRING)
-        texture_draw_part(&img_golden_herring,0,0,dest.x,dest.y,dest.w,dest.h);
-    }
+  Sprite* sprite;
+  switch(kind) {
+    case UPGRADE_GROWUP: sprite = img_growup; break;
+    case UPGRADE_ICEFLOWER: sprite = img_iceflower; break;
+    case UPGRADE_FIREFLOWER: sprite = img_fireflower; break;
+    case UPGRADE_STAR: sprite = img_star; break;
+    case UPGRADE_1UP: sprite = img_1up; break;
+    default:
+      assert(!"wrong type in Powerup::draw()");
+      sprite = NULL;           // added by neoneurone, g++ likes this !
+  }
+
+  if(base.height < 32) // still raising up?
+    sprite->draw(context, Vector(base.x, base.y + (32 - base.height)),
+        LAYER_TILES - 10);
   else
-    {
-      if (kind == UPGRADE_MINTS)
-        {
-          texture_draw(&img_mints,
-                       base.x - scroll_x, base.y);
-        }
-      else if (kind == UPGRADE_COFFEE)
-        {
-          texture_draw(&img_coffee,
-                       base.x - scroll_x, base.y);
-        }
-      else if (kind == UPGRADE_HERRING)
-        {
-          texture_draw(&img_golden_herring,
-                       base.x - scroll_x, base.y);
-        }
-    }
+    sprite->draw(context, Vector(base.x, base.y), LAYER_OBJECTS);
+}
+
+void
+Upgrade::bump(Player* player)
+{
+  // these can't be bumped
+  if(kind != UPGRADE_GROWUP)
+    return;
+
+  SoundManager::get()->play_sound(IDToSound(SND_BUMP_UPGRADE), Vector(base.x, base.y), Sector::current()->player->get_pos());
+  
+  // determine new direction
+  Direction old_dir = dir;
+  if (player->base.x + player->base.width/2 > base.x + base.width/2)
+    dir = LEFT;
+  else
+    dir = RIGHT;
+
+  // do a little jump and change direction (if necessary)
+  if (dir != old_dir)
+    physic.set_velocity(-physic.get_velocity_x(), 3);
+  else
+    physic.set_velocity_y(3);
+
+  physic.enable_gravity(true);
+}
+
+void
+Upgrade::collision(const MovingObject& , int)
+{
+  // later
 }
 
 void
-Upgrade::collision(void* p_c_object, int c_object)
+Upgrade::collision(void* p_c_object, int c_object, CollisionType type)
 {
   Player* pplayer = NULL;
 
+  if(type == COLLISION_BUMP) {
+    if(c_object == CO_PLAYER)
+      pplayer = (Player*) p_c_object;
+    bump(pplayer);
+    return;
+  }
+
   switch (c_object)
     {
     case CO_PLAYER:
@@ -245,40 +323,63 @@ Upgrade::collision(void* p_c_object, int c_object)
       /* p_c_object is CO_PLAYER, so assign it to pplayer */
       pplayer = (Player*) p_c_object;
 
-      World::current()->upgrades.erase(static_cast<std::vector<Upgrade>::iterator>(this));
-
       /* Affect the player: */
 
-      if (kind == UPGRADE_MINTS)
+      if (kind == UPGRADE_GROWUP)
         {
-          play_sound(sounds[SND_EXCELLENT], SOUND_CENTER_SPEAKER);
-          pplayer->size = BIG;
-          pplayer->base.height = 64;
-         pplayer->base.y -= 32;
-         if(collision_object_map(&pplayer->base))
-            {
-              pplayer->base.height = 32;
-              pplayer->base.y += 32;
-              pplayer->duck = true;
-            }
+          SoundManager::get()->play_sound(IDToSound(SND_EXCELLENT));
+          pplayer->grow(true);
         }
-      else if (kind == UPGRADE_COFFEE)
+      else if (kind == UPGRADE_FIREFLOWER)
         {
-          play_sound(sounds[SND_COFFEE], SOUND_CENTER_SPEAKER);
-          pplayer->got_coffee = true;
+          SoundManager::get()->play_sound(IDToSound(SND_COFFEE));
+          pplayer->grow(true);
+          pplayer->got_power = pplayer->FIRE_POWER;
         }
-      else if (kind == UPGRADE_HERRING)
+      else if (kind == UPGRADE_ICEFLOWER)
         {
-          play_sound(sounds[SND_HERRING], SOUND_CENTER_SPEAKER);
-          timer_start(&pplayer->invincible_timer,TUX_INVINCIBLE_TIME);
-          /* play the herring song ^^ */
-          if (get_current_music() != HURRYUP_MUSIC)
-            {
-              set_current_music(HERRING_MUSIC);
-              play_current_music();
-            }
+          SoundManager::get()->play_sound(IDToSound(SND_COFFEE));
+          pplayer->grow(true);
+          pplayer->got_power = pplayer->ICE_POWER;
         }
-      break;
+      else if (kind == UPGRADE_FIREFLOWER)
+        {
+          SoundManager::get()->play_sound(IDToSound(SND_COFFEE));
+          pplayer->grow(true);
+          pplayer->got_power = pplayer->FIRE_POWER;
+        }
+      else if (kind == UPGRADE_STAR)
+        {
+          SoundManager::get()->play_sound(IDToSound(SND_HERRING));
+          pplayer->invincible_timer.start(TUX_INVINCIBLE_TIME);
+          Sector::current()->play_music(HERRING_MUSIC);
+        }
+      else if (kind == UPGRADE_1UP)
+        {
+          if(player_status.lives < MAX_LIVES) {
+            player_status.lives++;
+            SoundManager::get()->play_sound(IDToSound(SND_LIFEUP));
+          }
+        }
+
+      remove_me();
+      return;
     }
 }
 
+void load_special_gfx()
+{
+  img_growup    = sprite_manager->load("egg");
+  img_iceflower = sprite_manager->load("iceflower");
+  img_fireflower = sprite_manager->load("fireflower");
+  img_star      = sprite_manager->load("star");
+  img_1up       = sprite_manager->load("1up");
+
+  img_firebullet = sprite_manager->load("firebullet");
+  img_icebullet  = sprite_manager->load("icebullet");
+}
+
+void free_special_gfx()
+{
+}
+