From: Ricardo Cruz <rick2@aeiou.pt>
Date: Fri, 28 May 2004 18:13:17 +0000 (+0000)
Subject: Fade when entering a level.
X-Git-Url: https://git.verplant.org/?a=commitdiff_plain;h=e20c903338ea152a65f5fcb06589b5821ad3420a;p=supertux.git

Fade when entering a level.
Sometimes doesn't work, i'll have a look at the fade func later.

SVN-Revision: 1349
---

diff --git a/src/intro.cpp b/src/intro.cpp
index ea4283a8b..c6e6002d2 100644
--- a/src/intro.cpp
+++ b/src/intro.cpp
@@ -35,8 +35,7 @@
 
 void draw_intro()
 {
-if(debug_mode)
-  fade("/images/background/arctis.jpg", 30, false);
+shrink_fade(Point((screen->w/2),(screen->h/2)), 2000);
 display_text_file("intro.txt", "/images/background/arctis.jpg", SCROLL_SPEED_MESSAGE);
 }
 
diff --git a/src/screen.cpp b/src/screen.cpp
index d20543fad..61d51fcf4 100644
--- a/src/screen.cpp
+++ b/src/screen.cpp
@@ -138,6 +138,36 @@ else
     }
 }
 
+/** This fade shrinks to the given point */
+
+#define LOOP_DELAY 20
+void shrink_fade(Point point, int fade_time)
+{
+float left_inc  = (float)point.x / ((float)fade_time / LOOP_DELAY);
+float right_inc = ((float)screen->w - point.x) / ((float)fade_time / LOOP_DELAY);
+float up_inc    = (float)point.y / ((float)fade_time / LOOP_DELAY);
+float down_inc  = ((float)screen->h - point.y) / ((float)fade_time / LOOP_DELAY);
+
+float left_cor = 0, right_cor = 0, up_cor = 0, down_cor = 0;
+
+while(left_cor < screen->w - point.x && right_cor < screen->w - point.x &&
+      up_cor < screen->h - point.y && down_cor < screen->h - point.y)
+  {
+  left_cor  += left_inc;
+  right_cor += right_inc;
+  up_cor    += up_inc;
+  down_cor  += down_inc;
+
+  fillrect(0, 0, left_cor, screen->h, 0,0,0);  // left side
+  fillrect(screen->w - right_cor, 0, right_cor, screen->h, 0,0,0);  // right side
+  fillrect(0, 0, screen->w, up_cor, 0,0,0);  // up side
+  fillrect(0, screen->h - down_cor, screen->w, down_cor, 0,0,0);  // down side
+
+  flipscreen();
+  SDL_Delay(LOOP_DELAY);
+  }
+}
+
 /* 'Stolen' from the SDL documentation.
  * Set the pixel at (x, y) to the given value
  * NOTE: The surface must be locked before calling this!
diff --git a/src/screen.h b/src/screen.h
index 1193cb0d4..a786cc90a 100644
--- a/src/screen.h
+++ b/src/screen.h
@@ -44,12 +44,32 @@ struct Color
   int red, green, blue;
 };
 
+struct Point
+{
+  Point() : x(0), y(0) {}
+
+  Point(const Point& pos)
+    : x(pos.x), y(pos.y) {}
+
+  Point& operator=(const Point& pos)
+  { x = pos.x;
+    y = pos.y; 
+    return *this; }
+
+  Point(int x_, int y_)
+    : x(x_), y(y_) {}
+
+  int x;
+  int y;
+};
+
 void drawline(int x1, int y1, int x2, int y2, int r, int g, int b, int a);
 void clearscreen(int r, int g, int b);
 void drawgradient(Color top_clr, Color bot_clr);
-void fillrect(float x, float y, float w, float h, int r, int g, int b, int a);
+void fillrect(float x, float y, float w, float h, int r, int g, int b, int a = 255);
 //void black_fade(Surface* surface, int seconds, bool fade_out);
 void fade(const std::string& surface, int seconds, bool fade_out);
+void shrink_fade(Point point, int fade_time);
 void updatescreen(void);
 void flipscreen(void);
 void update_rect(SDL_Surface *scr, Sint32 x, Sint32 y, Sint32 w, Sint32 h);
diff --git a/src/worldmap.cpp b/src/worldmap.cpp
index 785edabcb..0de8a82e9 100644
--- a/src/worldmap.cpp
+++ b/src/worldmap.cpp
@@ -640,7 +640,9 @@ WorldMap::update(float delta)
             {
               PlayerStatus old_player_status = player_status;
 
-              std::cout << "Enter the current level: " << level->name << std::endl;;
+              std::cout << "Enter the current level: " << level->name << std::endl;
+              // do a shriking fade to the level
+              shrink_fade(Point((level->x*32 + 16 + offset.x),(level->y*32 + 16 + offset.y)), 3000);
               GameSession session(datadir +  "/levels/" + level->name,
                                   1, ST_GL_LOAD_LEVEL_FILE);
 
diff --git a/src/worldmap.h b/src/worldmap.h
index 48e57d84b..0fb10214d 100644
--- a/src/worldmap.h
+++ b/src/worldmap.h
@@ -24,28 +24,10 @@
 #include <string>
 
 #include "musicref.h"
+#include "screen.h"
 
 namespace WorldMapNS {
 
-struct Point
-{
-  Point() : x(0), y(0) {}
-
-  Point(const Point& pos)
-    : x(pos.x), y(pos.y) {}
-
-  Point& operator=(const Point& pos)
-  { x = pos.x;
-    y = pos.y; 
-    return *this; }
-
-  Point(int x_, int y_)
-    : x(x_), y(y_) {}
-
-  int x;
-  int y;
-};
-
 class Tile
 {
 public: