Add several patches for the sdl version of digger. These patches fix the game

when used with SDL-1.2.x and also add some new functionality (ability to
switch to/from fullscreem mode). Since files being patched aren't used right
now the PORTREVISION remains the same.

Prompted by:	Luqman Hakim <dbz@telkom.net>

3 files changed, 210 insertions, 0 deletions

diff --git a/games/digger-vgl/files/patch-sdl_kbd.c b/games/digger-vgl/files/patch-sdl_kbd.c
new file mode 100644
index 000000000000..cd48e52d0380
--- /dev/null
+++ b/games/digger-vgl/files/patch-sdl_kbd.c
@@ -0,0 +1,43 @@
+
+$FreeBSD$
+
+--- sdl_kbd.c	2001/09/12 21:53:57	1.1
++++ sdl_kbd.c	2001/09/12 21:54:03
+@@ -1,3 +1,15 @@
++/*
++ * ---------------------------------------------------------------------------
++ * "THE BEER-WARE LICENSE" (Revision 42, (c) Poul-Henning Kamp): Maxim
++ * Sobolev <sobomax@altavista.net> wrote this file. As long as you retain
++ * this  notice you can  do whatever you  want with this stuff. If we meet
++ * some day, and you think this stuff is worth it, you can buy me a beer in
++ * return.
++ * 
++ * Maxim Sobolev
++ * --------------------------------------------------------------------------- 
++ */
++
+ #include <SDL.h>
+ 
+ #include "def.h"
+@@ -14,8 +26,12 @@
+ 		if(klen == KBLEN) /* Buffer is full, drop some pieces */
+ 			memcpy(kbuffer, kbuffer + 1, --klen);
+ 		kbuffer[klen++] = event->key.keysym.sym;
+-	}
+ 
++		/* ALT + Enter handling (fullscreen/windowed operation) */
++		if((event->key.keysym.sym == SDLK_RETURN || event->key.keysym.sym == SDLK_KP_ENTER) &&
++		    ((event->key.keysym.mod & KMOD_ALT) != 0))
++			switchmode();
++	}
+ 	if(event->type == SDL_QUIT)
+ 		exit(0);
+ 
+@@ -28,7 +44,6 @@
+ 	
+ 	SDL_PumpEvents();
+ 	keys = SDL_GetKeyState(NULL);
+-	
+ 	if (keys[key] == SDL_PRESSED )
+ 		return(TRUE);
+ 	else
diff --git a/games/digger-vgl/files/patch-sdl_vid.c b/games/digger-vgl/files/patch-sdl_vid.c
new file mode 100644
index 000000000000..926b6e3c6f3e
--- /dev/null
+++ b/games/digger-vgl/files/patch-sdl_vid.c
@@ -0,0 +1,157 @@
+
+$FreeBSD$
+
+--- sdl_vid.c.orig	Mon Apr  3 23:42:42 2000
++++ sdl_vid.c	Thu Sep 13 01:24:35 2001
+@@ -1,5 +1,18 @@
+-#include <stdlib.h>
++/*
++ * ---------------------------------------------------------------------------
++ * "THE BEER-WARE LICENSE" (Revision 42, (c) Poul-Henning Kamp): Maxim
++ * Sobolev <sobomax@altavista.net> wrote this file. As long as you retain
++ * this  notice you can  do whatever you  want with this stuff. If we meet
++ * some day, and you think this stuff is worth it, you can buy me a beer in
++ * return.
++ * 
++ * Maxim Sobolev
++ * --------------------------------------------------------------------------- 
++ */
+ 
++/* malloc() and friends */
++#include <stdlib.h>
++/* Lovely SDL */
+ #include <SDL.h>
+ 
+ #include "def.h"
+@@ -48,8 +61,11 @@
+ SDL_Color *ipalettes[] = {vga16_pal1i, vga16_pal2i};
+ Sint4	currpal=0;
+ 
++Uint32	addflag=0;
++
+ SDL_Surface *screen = NULL;
+ 
++/* Data structure holding pending updates */
+ struct PendNode {
+ 	void *prevnode;
+ 	void *nextnode;
+@@ -77,6 +93,46 @@
+ {
+ }
+ 
++bool setmode(void)
++{
++	if((screen = SDL_SetVideoMode(640, 400, 8, \
++	    SDL_HWSURFACE | SDL_HWPALETTE | addflag)) == NULL)
++		return(FALSE);
++	else
++		return(TRUE);
++}
++
++void switchmode(void)
++{
++	Uint32 saved;
++	SDL_Surface *tmp = NULL;
++	SDL_Surface *oldscreen;
++	
++	vgageti(0, 0, (Uint3 *)&tmp, 80, 200);
++	oldscreen = screen;
++	saved = addflag;
++
++	if(addflag == 0)
++		addflag = SDL_FULLSCREEN;
++	else
++		addflag = 0;
++	if(setmode() == FALSE) {
++		addflag = saved;
++		if(setmode() == FALSE) {
++			fprintf(stderr, "Fatal: failed to change videomode and"\
++				"fallback mode failed as well. Exitting.\n");
++			exit(1);
++		}
++	}
++
++	SDL_SetColors(screen, tmp->format->palette->colors, 0, \
++		tmp->format->palette->ncolors);
++	vgaputi(0, 0, (Uint3 *)&tmp, 80, 200);
++	SDL_FreeSurface(tmp);
++	SDL_FreeSurface(oldscreen);
++}
++
++
+ void vgainit(void)
+ {
+ 	SDL_Surface *tmp = NULL;
+@@ -92,7 +148,7 @@
+ 	}
+ 	SDL_WM_SetCaption("D I G G E R", NULL);
+ 	SDL_WM_SetIcon(tmp, NULL);
+-	if ((screen = SDL_SetVideoMode(640, 400, 8, SDL_HWSURFACE | SDL_HWPALETTE)) == NULL) {
++	if(setmode() == FALSE) {
+ 		fprintf(stderr, "Couldn't set 640x480x8 video mode: %s\n", SDL_GetError());
+ 		exit(1);
+         }
+@@ -131,7 +187,6 @@
+ {
+ 	struct PendNode *p;
+ 
+-	SDL_UnlockSurface(screen);				
+ 	for(p=First;p!=NULL;)
+ 	{
+ 		SDL_UpdateRect(screen,p->rect.x,p->rect.y,p->rect.w,p->rect.h);
+@@ -139,7 +194,6 @@
+ 		free(p);
+ 		p = First;
+ 	}
+-	SDL_LockSurface(screen);
+ 	pendnum = 0;
+ }
+ 
+@@ -161,12 +215,26 @@
+ 	tmp->format->palette = screen->format->palette;
+ 	SDL_BlitSurface(tmp, NULL, screen, &new->rect);
+ 	tmp->format->palette = reserv;
++/* 
++ * Following piece of code comparing already pending updates with current with
++ * main goal to prevent redrawing overlapping rectangles several times.
++ */ 
+ 	
+ 	for(ptr=First;ptr!=NULL;ptr=ptr->nextnode) {
+ 		if((new->rect.x >= ptr->rect.x) &&
+ 		   (new->rect.y >= ptr->rect.y) &&
+-		   ((new->rect.x+new->rect.w)<=(ptr->rect.x+ptr->rect.w)) &&
+-		   ((new->rect.y+new->rect.h)<=(ptr->rect.y+ptr->rect.h))) {
++		   ((new->rect.x+new->rect.w) <= (ptr->rect.x+ptr->rect.w)) &&
++		   ((new->rect.y+new->rect.h) <= (ptr->rect.y+ptr->rect.h))) {
++			free(new);
++			return;
++		} else if((new->rect.x <= ptr->rect.x) &&
++		   (new->rect.y <= ptr->rect.y) &&
++		   ((new->rect.x+new->rect.w) >= (ptr->rect.x+ptr->rect.w)) &&
++		   ((new->rect.y+new->rect.h) >= (ptr->rect.y+ptr->rect.h))) {
++			ptr->rect.x = new->rect.x;
++			ptr->rect.y = new->rect.y;
++			ptr->rect.w = new->rect.w;
++			ptr->rect.h = new->rect.h;
+ 			free(new);
+ 			return;
+ 		}
+@@ -211,6 +279,9 @@
+ 	Sint4 rval = 0;
+ 	Uint8 *pixels;
+ 
++	if ((x > 319) || (y > 199))
++	       return (0xff);
++
+ 	vgageti(x, y, (Uint3 *)&tmp, 1, 1);
+ 	pixels = (Uint8 *)tmp->pixels;
+ 	for (yi=0;yi<tmp->h;yi++)
+@@ -260,6 +331,8 @@
+ 	Sint4 w=3, h=12, size;
+ 	Sint4 i;
+ 
++	if(((ch - 32) >= 0x5f) || (ch < 32))
++		return;
+ 	tmp = ch2bmap(alphas[ch-32], w, h);
+ 	size = tmp->w*tmp->h;
+ 	copy = malloc(size);
diff --git a/games/digger-vgl/files/patch-sdl_vid.h b/games/digger-vgl/files/patch-sdl_vid.h
new file mode 100644
index 000000000000..a579b9c2a1f2
--- /dev/null
+++ b/games/digger-vgl/files/patch-sdl_vid.h
@@ -0,0 +1,10 @@
+
+$FreeBSD$
+
+--- sdl_vid.h	2001/09/12 21:54:45	1.1
++++ sdl_vid.h	2001/09/12 21:54:59
+@@ -1,2 +1,3 @@
+-void doscreenupdate();
++void doscreenupdate(void);
++void switchmode(void);
+