From 97fb6c2a140f361991541bcf5a5c1e5d18deaf74 Mon Sep 17 00:00:00 2001
From: Holger Schemel <info@artsoft.org>
Date: Sat, 17 Apr 2010 23:24:08 +0200
Subject: [PATCH] rnd-20100417-2-src

---
 src/conftime.h               |  2 +-
 src/events.c                 |  6 ++++++
 src/game_sp/DDScrollBuffer.c | 26 ++++++++++++++++++++++++--
 src/game_sp/MainForm.c       | 24 ++++++++++++++++++++++++
 src/game_sp/export.h         |  2 ++
 src/game_sp/main.c           |  3 +++
 src/libgame/types.h          |  8 ++++++++
 7 files changed, 68 insertions(+), 3 deletions(-)

diff --git a/src/conftime.h b/src/conftime.h
index aa3503a0..631c6c00 100644
--- a/src/conftime.h
+++ b/src/conftime.h
@@ -1 +1 @@
-#define COMPILE_DATE_STRING "2010-04-17 10:50"
+#define COMPILE_DATE_STRING "2010-04-17 23:20"
diff --git a/src/events.c b/src/events.c
index 3284723c..9a42eb47 100644
--- a/src/events.c
+++ b/src/events.c
@@ -871,6 +871,12 @@ void HandleKey(Key key, int key_status)
 	case KSYM_0:
 	  GameFrameDelay = (GameFrameDelay == 500 ? GAME_FRAME_DELAY : 500);
 	  break;
+
+	case KSYM_b:
+	  setup.sp_show_border_elements = !setup.sp_show_border_elements;
+	  printf("Supaplex border elements %s\n",
+		 setup.sp_show_border_elements ? "enabled" : "disabled");
+	  break;
 #endif
 
 	default:
diff --git a/src/game_sp/DDScrollBuffer.c b/src/game_sp/DDScrollBuffer.c
index 70c4c5a6..80cddf0d 100644
--- a/src/game_sp/DDScrollBuffer.c
+++ b/src/game_sp/DDScrollBuffer.c
@@ -106,8 +106,13 @@ static void ScrollPlayfieldIfNeededExt(boolean reset)
 
   if (mScrollX_last == -1 || mScrollY_last == -1)
   {
+#if 1
+    mScrollX_last = (mScrollX / TILESIZE) * TILESIZE;
+    mScrollY_last = (mScrollY / TILESIZE) * TILESIZE;
+#else
     mScrollX_last = mScrollX;
     mScrollY_last = mScrollY;
+#endif
 
     return;
   }
@@ -223,10 +228,12 @@ void BlitScreenToBitmap_SP(Bitmap *target_bitmap)
   int sx, sy, sxsize, sysize;
 
 #if 1
-  printf("::: %d, %d - %d, %d - %ld, %ld\n",
+  printf("::: %d, %d / %d, %d / %ld, %ld (%ld, %ld) / %d, %d\n",
 	 MurphyScreenXPos, MurphyScreenYPos,
 	 ScreenScrollXPos, ScreenScrollYPos,
-	 mScrollX, mScrollY);
+	 mScrollX, mScrollY,
+	 mScrollX_last, mScrollY_last,
+	 px, py);
 #endif
 
   int xsize = SXSIZE;
@@ -239,6 +246,20 @@ void BlitScreenToBitmap_SP(Bitmap *target_bitmap)
   sx = SX + (full_xsize < xsize ? (xsize - full_xsize) / 2 : 0);
   sy = SY + (full_ysize < ysize ? (ysize - full_ysize) / 2 : 0);
 
+#if 1
+#if 1
+  {
+    px += game_sp.scroll_xoffset;
+    py += game_sp.scroll_yoffset;
+  }
+#else
+  if (1)
+  {
+    px += TILEX / 2;
+    py += TILEY / 2;
+  }
+#endif
+#else
 #if 1
   if (0 && !menBorder)
   {
@@ -257,6 +278,7 @@ void BlitScreenToBitmap_SP(Bitmap *target_bitmap)
     px += TILEX / 2;
     py += TILEY / 2;
   }
+#endif
 #endif
 
   BlitBitmap(bitmap_db_field_sp, target_bitmap, px, py, sxsize, sysize, sx, sy);
diff --git a/src/game_sp/MainForm.c b/src/game_sp/MainForm.c
index 9f0b6cb5..ec0ba33d 100644
--- a/src/game_sp/MainForm.c
+++ b/src/game_sp/MainForm.c
@@ -197,6 +197,30 @@ void SetScrollEdges()
     ScrollMaxX -= TILEX / 2;
     ScrollMaxY -= TILEY / 2;
   }
+#if 1
+  {
+    ScrollMinX -= game_sp.scroll_xoffset;
+    ScrollMaxX -= game_sp.scroll_xoffset;
+    ScrollMinY -= game_sp.scroll_yoffset;
+    ScrollMaxY -= game_sp.scroll_yoffset;
+  }
+#else
+  if (1)
+  {
+    ScrollMinX -= TILEX / 2;
+    ScrollMaxX -= TILEX / 2;
+    ScrollMinY -= TILEY / 2;
+    ScrollMaxY -= TILEY / 2;
+  }
+#endif
+#else
+  if (!menBorder)
+  {
+    ScrollMinX += TILEX / 2;
+    ScrollMinY += TILEY / 2;
+    ScrollMaxX -= TILEX / 2;
+    ScrollMaxY -= TILEY / 2;
+  }
 #endif
 
 #else
diff --git a/src/game_sp/export.h b/src/game_sp/export.h
index b5c0d0bb..fe5995fd 100644
--- a/src/game_sp/export.h
+++ b/src/game_sp/export.h
@@ -111,6 +111,8 @@ struct GameInfo_SP
 
   /* needed for engine snapshots */
   int preceding_buffer_size;
+
+  int scroll_xoffset, scroll_yoffset;
 };
 
 struct DemoInfo_SP
diff --git a/src/game_sp/main.c b/src/game_sp/main.c
index 42f5f753..a29d6205 100644
--- a/src/game_sp/main.c
+++ b/src/game_sp/main.c
@@ -28,6 +28,9 @@ void InitGameEngine_SP()
 
   menBorder = setup.sp_show_border_elements;
 
+  game_sp.scroll_xoffset = (EVEN(SCR_FIELDX) ? TILEX / 2 : 0);
+  game_sp.scroll_yoffset = (EVEN(SCR_FIELDY) ? TILEY / 2 : 0);
+
   for (x = 0; x < SP_MAX_PLAYFIELD_WIDTH; x++)
   {
     for (y = 0; y < SP_MAX_PLAYFIELD_HEIGHT; y++)
diff --git a/src/libgame/types.h b/src/libgame/types.h
index d6f49bdd..6e55364c 100644
--- a/src/libgame/types.h
+++ b/src/libgame/types.h
@@ -58,6 +58,14 @@ typedef unsigned char byte;
 #define SIGN(a)		((a) < 0 ? -1 : ((a) > 0 ? 1 : 0))
 #endif
 
+#ifndef ODD
+#define ODD(a)		(((a) & 1) == 1)
+#endif
+
+#ifndef EVEN
+#define EVEN(a)		(((a) & 1) == 0)
+#endif
+
 #define SIZEOF_ARRAY(array, type)	(sizeof(array) / sizeof(type))
 #define SIZEOF_ARRAY_INT(array)		SIZEOF_ARRAY(array, int)
 
-- 
2.34.1