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games/doom: raise static limits

makes very large/detailed maps work; raising max intercepts and
spechits may break demos and cause desynchronizations, so they're left
alone despite their potential issues; savegame buffer overflows can
happen for stupidly huge maps with tons of entities

--- a/sys/src/games/doom/g_game.c

+++ b/sys/src/games/doom/g_game.c

@@ -68,7 +68,7 @@

 #include "g_game.h"

-#define SAVEGAMESIZE	0x2c000

+#define SAVEGAMESIZE	0x200000

 #define SAVESTRINGSIZE	24

@@ -1203,7 +1203,8 @@

     sprintf (name,SAVEGAMENAME"%d.dsg",savegameslot); 

     description = savedescription; 

-    save_p = savebuffer = screens[1]+0x4000; 

+    savebuffer = Z_Malloc(SAVEGAMESIZE, PU_STATIC, 0);

+    save_p = savebuffer;

     memcpy (save_p, description, SAVESTRINGSIZE); 

     save_p += SAVESTRINGSIZE; 

@@ -1239,6 +1240,7 @@

     // draw the pattern into the back screen

     R_FillBackScreen ();	

+    Z_Free(savebuffer);	

 } 

--- a/sys/src/games/doom/i_system.c

+++ b/sys/src/games/doom/i_system.c

@@ -11,7 +11,7 @@

 #include "g_game.h"

 #include "m_misc.h"

-int mb_used = 6;	/* 6MB heap */

+int mb_used = 32;	/* 32MB heap */

 void I_Init (void)

 {

--- a/sys/src/games/doom/p_spec.c

+++ b/sys/src/games/doom/p_spec.c

@@ -78,7 +78,7 @@

-#define MAXANIMS                32

+#define MAXANIMS                256

 extern anim_t	anims[MAXANIMS];

 extern anim_t*	lastanim;

@@ -321,7 +321,7 @@

 // Note: this should be doable w/o a fixed array.

 // 20 adjoining sectors max!

-#define MAX_ADJOINING_SECTORS    	20

+#define MAX_ADJOINING_SECTORS    	128

 fixed_t

 P_FindNextHighestFloor

--- a/sys/src/games/doom/r_bsp.c

+++ b/sys/src/games/doom/r_bsp.c

@@ -85,7 +85,7 @@

 } cliprange_t;

-#define MAXSEGS		32

+#define MAXSEGS		SCREENWIDTH/2+1

 // newend is one past the last valid seg

 cliprange_t*	newend;

--- a/sys/src/games/doom/r_defs.h

+++ b/sys/src/games/doom/r_defs.h

@@ -52,7 +52,7 @@

 #define SIL_TOP			2

 #define SIL_BOTH		3

-#define MAXDRAWSEGS		256

+#define MAXDRAWSEGS		4096

--- a/sys/src/games/doom/r_plane.c

+++ b/sys/src/games/doom/r_plane.c

@@ -47,7 +47,7 @@

 //

 // Here comes the obnoxious "visplane".

-#define MAXVISPLANES	128

+#define MAXVISPLANES	1024

 visplane_t		visplanes[MAXVISPLANES];

 visplane_t*		lastvisplane;

 visplane_t*		floorplane;

@@ -54,7 +54,7 @@

 visplane_t*		ceilingplane;

 // ?

-#define MAXOPENINGS	SCREENWIDTH*64

+#define MAXOPENINGS	SCREENWIDTH*200

 short			openings[MAXOPENINGS];

 short*			lastopening;

--- a/sys/src/games/doom/r_things.h

+++ b/sys/src/games/doom/r_things.h

@@ -24,7 +24,7 @@

 #define __R_THINGS__

-#define MAXVISSPRITES  	128

+#define MAXVISSPRITES  	4096

 extern vissprite_t	vissprites[MAXVISSPRITES];

 extern vissprite_t*	vissprite_p;