From: Ricardo Cruz <rick2@aeiou.pt>
Date: Sun, 16 May 2004 12:18:05 +0000 (+0000)
Subject: Y background scrolling. It should start be drawing from the bottom of the level to... 
X-Git-Url: https://git.verplant.org/?a=commitdiff_plain;h=492dc09547759f369a01a0eed82e44092acbda61;p=supertux.git

Y background scrolling. It should start be drawing from the bottom of the level to the up.
Dunno if it is working well.

SVN-Revision: 1210
---

diff --git a/src/level.cpp b/src/level.cpp
index b47b1a6ab..3bd31f5e9 100644
--- a/src/level.cpp
+++ b/src/level.cpp
@@ -764,10 +764,12 @@ void Level::draw_bg()
 {
   // Tile background horizontally
   int sx = (int)((float)scroll_x * ((float)bkgd_speed/100.0f)) % img_bkgd->w;
-  for (int i = 0; (i-1)*img_bkgd->w <= screen->w; i++)
-    img_bkgd->draw_part(i == 0 ? sx : 0, 0,
-                        i == 0 ? 0 : (img_bkgd->w * i) - sx, 0,
-                        i == 0 ? img_bkgd->w - sx : img_bkgd->w, img_bkgd->h);
+  int sy = (int)((float)scroll_y * ((float)bkgd_speed/100.0f)) % img_bkgd->h;
+  for (int x = 0; (x-1)*img_bkgd->w <= screen->w; x++)
+    for (int y = 0; (y-1)*img_bkgd->h <= screen->h; y++)
+      img_bkgd->draw_part(x == 0 ? sx : 0, y == 0 ? sy : 0,
+                        x == 0 ? 0 : (img_bkgd->w * x) - sx, y == 0 ? 0 : (img_bkgd->h * y) - sy + (height*32 - screen->h),
+                        x == 0 ? img_bkgd->w - sx : img_bkgd->w, y == 0 ? img_bkgd->h - sy : img_bkgd->h);
 }
 
 void