From: Ricardo Cruz <rick2@aeiou.pt>
Date: Wed, 7 Jul 2004 11:39:35 +0000 (+0000)
Subject: Added vertical flipping to levels!
X-Git-Url: https://git.verplant.org/?a=commitdiff_plain;h=055fb8d0e2d75acff6185f5a4f5c75e0782503c5;p=supertux.git

Added vertical flipping to levels!
To enable it, add to the level file (flip #t) .

SVN-Revision: 1532
---

diff --git a/src/badguy.h b/src/badguy.h
index fa26832d9..03c881851 100644
--- a/src/badguy.h
+++ b/src/badguy.h
@@ -99,6 +99,7 @@ public:
   bool stay_on_platform;
 
   Direction dir;
+  Vector start_position;
 
   Timer frozen_timer;  // gets frozen when a ice shot hits it
 
@@ -108,7 +109,6 @@ private:
   int squishcount; /// number of times this enemy was squiched
   Vector target; // Target that badguy is aiming for (wingling uses this)
   Timer timer;
-  Vector start_position;
   Physic physic;
   float angle;
 
diff --git a/src/gameloop.cpp b/src/gameloop.cpp
index 32dbbf4bf..15c950528 100644
--- a/src/gameloop.cpp
+++ b/src/gameloop.cpp
@@ -164,6 +164,12 @@ GameSession::levelintro(void)
       std::string(_("by ")) + level->get_author(), 
       Vector(0, 400), LAYER_FOREGROUND1);
 
+
+  if(level->is_level_flipped())
+    context.draw_text_center(white_text,
+      _("Level Vertically Flipped!"),
+      Vector(0, 310), LAYER_FOREGROUND1);
+
   context.do_drawing();
 
   SDL_Event event;
@@ -763,7 +769,7 @@ GameSession::drawstatus(DrawingContext& context)
     {
       sprintf(str, "%2.1f", fps_fps);
       context.draw_text(white_text, "FPS", 
-          Vector(screen->w - white_text->get_text_width("FPS      "), 40),
+          Vector(screen->w - white_text->get_text_width("FPS     "), 40),
           LAYER_FOREGROUND1);
       context.draw_text(gold_text, str,
           Vector(screen->w-4*16, 40), LAYER_FOREGROUND1);
diff --git a/src/interactive_object.h b/src/interactive_object.h
index bb06a5238..62bfb4b39 100644
--- a/src/interactive_object.h
+++ b/src/interactive_object.h
@@ -43,6 +43,9 @@ public:
   const base_type& get_area() const
   { return area; }
 
+  void set_area(float x, float y)
+  { area.x = x; area.y = y; }
+
 protected:
   base_type area;
 };
diff --git a/src/level.cpp b/src/level.cpp
index f004fd2dc..a13f2f26c 100644
--- a/src/level.cpp
+++ b/src/level.cpp
@@ -44,6 +44,7 @@ using namespace std;
 
 Level::Level()
   : name("noname"), author("mr. x"), time_left(500)
+
 {
 }
 
@@ -60,6 +61,8 @@ Level::load(const std::string& filename)
     return;
   }
 
+  vertical_flip = false;
+
   for(lisp_object_t* cur = level->get_lisp(); !lisp_nil_p(cur);
       cur = lisp_cdr(cur)) {
     std::string token = lisp_symbol(lisp_car(lisp_car(cur)));
@@ -72,6 +75,8 @@ Level::load(const std::string& filename)
       author = lisp_string(data);
     } else if(token == "time") {
       time_left = lisp_integer(data);
+    } else if(token == "flip") {
+      vertical_flip = lisp_boolean(data);
     } else if(token == "sector") {
       Sector* sector = new Sector;
       sector->parse(reader);
@@ -83,6 +88,12 @@ Level::load(const std::string& filename)
   }
   
   delete level;
+
+  if(vertical_flip)
+    {
+    for(Sectors::iterator i = sectors.begin(); i != sectors.end(); ++i)
+      i->second->do_vertical_flip();
+    }
 }
 
 void
@@ -91,10 +102,18 @@ Level::load_old_format(LispReader& reader)
   reader.read_string("name", name);
   reader.read_string("author", author);
   reader.read_int("time", time_left);
+  vertical_flip = false;
+  reader.read_bool("flip", vertical_flip);
 
   Sector* sector = new Sector;
   sector->parse_old_format(reader);
   add_sector(sector);
+
+  if(vertical_flip)
+    {
+    for(Sectors::iterator i = sectors.begin(); i != sectors.end(); ++i)
+      i->second->do_vertical_flip();
+    }
 }
 
 void
@@ -116,6 +135,9 @@ Level::save(const std::string& filename)
 
  for(Sectors::iterator i = sectors.begin(); i != sectors.end(); ++i)
    {
+   if(vertical_flip)
+     i->second->do_vertical_flip();
+
    writer->start_list("sector");
    i->second->write(*writer);
    writer->end_list("sector");
diff --git a/src/level.h b/src/level.h
index c955c5f2c..7e4c3354c 100644
--- a/src/level.h
+++ b/src/level.h
@@ -49,12 +49,19 @@ public:
   const std::string& get_author() const
   { return author; }
 
+  bool is_level_flipped()
+  { return vertical_flip; }
+
   void add_sector(Sector* sector);
 
   Sector* get_sector(const std::string& name);
 
 private:
   void load_old_format(LispReader& reader);
+
+  /** If true, it will flip the level vertically, during the
+      parsing process */
+  bool vertical_flip;
 };
 
 #endif /*SUPERTUX_LEVEL_H*/
diff --git a/src/sector.cpp b/src/sector.cpp
index ce8e7e9d4..9c7f000e4 100644
--- a/src/sector.cpp
+++ b/src/sector.cpp
@@ -288,6 +288,38 @@ Sector::write(LispWriter& writer)
 }
 
 void
+Sector::do_vertical_flip()
+{
+  for(GameObjects::iterator i = gameobjects_new.begin(); i != gameobjects_new.end(); ++i)
+    {
+    TileMap* tilemap = dynamic_cast<TileMap*> (*i);
+    if(tilemap)
+      {
+      tilemap->do_vertical_flip();
+      }
+
+    BadGuy* badguy = dynamic_cast<BadGuy*> (*i);
+    if(badguy)
+      badguy->start_position.y = solids->get_height()*32 - badguy->start_position.y - 32;
+    Trampoline* trampoline = dynamic_cast<Trampoline*> (*i);
+    if(trampoline)
+      trampoline->base.y = solids->get_height()*32 - trampoline->base.y;
+    FlyingPlatform* flying_platform = dynamic_cast<FlyingPlatform*> (*i);
+    if(flying_platform)
+      flying_platform->base.y = solids->get_height()*32 - flying_platform->base.y;
+    Door* door = dynamic_cast<Door*> (*i);
+    if(door)
+      door->set_area(door->get_area().x, solids->get_height()*32 - door->get_area().y);
+    }
+
+  for(SpawnPoints::iterator i = spawnpoints.begin(); i != spawnpoints.end();
+      ++i) {
+    SpawnPoint* spawn = *i;
+    spawn->pos.y = solids->get_height()*32 - spawn->pos.y;
+  }
+}
+
+void
 Sector::add_object(GameObject* object)
 {
   gameobjects_new.push_back(object);
diff --git a/src/sector.h b/src/sector.h
index c8aa0b3b5..fe2acf1d5 100644
--- a/src/sector.h
+++ b/src/sector.h
@@ -112,6 +112,10 @@ public:
       the tile which the badguy is walking on an killing him this way */
   void trybumpbadguy(const Vector& pos);
 
+  /** Flip the all the sector vertically. The purpose of this is to let
+      player to play the same level in a different way :) */
+  void do_vertical_flip();
+
   /** @evil@ */
   static Sector* current()
   { return _current; }
diff --git a/src/tilemap.cpp b/src/tilemap.cpp
index b5f90b411..21651784a 100644
--- a/src/tilemap.cpp
+++ b/src/tilemap.cpp
@@ -33,13 +33,13 @@
 #include "lispwriter.h"
 
 TileMap::TileMap()
-  : solid(false), speed(1), width(0), height(0), layer(LAYER_TILES)
+  : solid(false), speed(1), width(0), height(0), layer(LAYER_TILES), vertical_flip(false)
 {
   tilemanager = TileManager::instance();
 }
 
 TileMap::TileMap(LispReader& reader)
-  : solid(false), speed(1), width(0), height(0), layer(LAYER_TILES)
+  : solid(false), speed(1), width(0), height(0), layer(LAYER_TILES), vertical_flip(false)
 {
   tilemanager = TileManager::instance();
 
@@ -84,7 +84,7 @@ TileMap::TileMap(LispReader& reader)
 }
 
 TileMap::TileMap(int layer_, bool solid_, size_t width_, size_t height_)
-  : solid(solid_), speed(1), width(width_), height(height_), layer(layer_)
+  : solid(solid_), speed(1), width(width_), height(height_), layer(layer_), vertical_flip(false)
 {
 }
 
@@ -131,9 +131,15 @@ TileMap::action(float )
 
 void
 TileMap::draw(DrawingContext& context)
-{ 
+{
   if (speed == 1.0)
     {
+      if(vertical_flip)  // flip vertically the tiles, in case we are playing this
+        {   // level upside down
+        context.push_transform();
+        context.set_drawing_effect(VERTICAL_FLIP); 
+        }
+
       /** if we don't round here, we'll have a 1 pixel gap on screen sometimes.
        * I have no idea why */
       float start_x = roundf(context.get_translation().x);
@@ -153,6 +159,9 @@ TileMap::draw(DrawingContext& context)
             tilemanager->draw_tile(context, tiles[ty*width + tx].id, pos, layer);
         }
       }
+
+      if(vertical_flip)  // disable flipping, if applied
+        context.pop_transform();
     }
   else
     {
@@ -161,6 +170,8 @@ TileMap::draw(DrawingContext& context)
 
       context.push_transform();
       context.set_translation(Vector(trans_x * speed, trans_y * speed));
+      if(vertical_flip)
+        context.set_drawing_effect(VERTICAL_FLIP); 
 
       float start_x = roundf(context.get_translation().x);
       float start_y = roundf(context.get_translation().y);
@@ -235,6 +246,19 @@ TileMap::resize(int new_width, int new_height)
   width = new_width;
 }
 
+void
+TileMap::do_vertical_flip()
+{
+  // remap tiles vertically flipped
+  for(int y = 0; y < height / 2; ++y) {
+    for(int x = 0; x < width; ++x) {
+      std::swap(tiles[y*width + x], tiles[(((height-1)*width) - (y*width)) + x]);
+      }
+    }
+
+  vertical_flip = true;
+}
+
 Tile*
 TileMap::get_tile(int x, int y) const
 {
diff --git a/src/tilemap.h b/src/tilemap.h
index c46435542..3df34cb9a 100644
--- a/src/tilemap.h
+++ b/src/tilemap.h
@@ -64,6 +64,10 @@ public:
    */
   void resize(int newwidth, int newheight);
 
+  /** Flip the all tile map vertically. The purpose of this is to let
+      player to play the same level in a different way :) */
+  void do_vertical_flip();
+
   size_t get_width() const
   { return width; }
 
@@ -96,6 +100,8 @@ private:
   float speed;
   int width, height;
   int layer;
+
+  bool vertical_flip;
 };
 
 #endif /*SUPERTUX_TILEMAP_H*/