From 29491679b891dd50b9921edd05093a71f17403aa Mon Sep 17 00:00:00 2001
From: aiju <devnull@localhost>
Date: Thu, 20 Feb 2014 22:13:59 +0100
Subject: [PATCH] games/nes: cleanup and resize handling

---
 sys/src/games/nes/cpu.c |  1 -
 sys/src/games/nes/dat.h | 10 ++++++++--
 sys/src/games/nes/mem.c |  3 ---
 sys/src/games/nes/ppu.c | 17 +++++++++++++++--
 4 files changed, 23 insertions(+), 8 deletions(-)

diff --git a/sys/src/games/nes/cpu.c b/sys/src/games/nes/cpu.c
index c1624c02f..f0469db8c 100644
--- a/sys/src/games/nes/cpu.c
+++ b/sys/src/games/nes/cpu.c
@@ -6,7 +6,6 @@
 u16int pc, curpc;
 u8int rA, rX, rY, rS, rP;
 int nmi;
-extern int map;
 
 static u8int
 fetch8(void)
diff --git a/sys/src/games/nes/dat.h b/sys/src/games/nes/dat.h
index d8f0da025..b7f1cc887 100644
--- a/sys/src/games/nes/dat.h
+++ b/sys/src/games/nes/dat.h
@@ -1,9 +1,15 @@
 extern u16int pc, curpc;
 extern u8int rA, rX, rY, rS, rP;
-extern uchar mem[32768];
-extern int scale;
+extern uchar mem[32768], ppuram[16384], oam[256];
 extern u16int pput, ppuv;
 extern u8int ppusx;
+extern int mirr;
+
+extern int map, scale;
+extern uchar *prg, *chr;
+extern int nprg, nchr, nmi, map;
+
+extern int keys;
 
 enum {
 	FLAGC = 1<<0,
diff --git a/sys/src/games/nes/mem.c b/sys/src/games/nes/mem.c
index d018400e8..5b14cdd82 100644
--- a/sys/src/games/nes/mem.c
+++ b/sys/src/games/nes/mem.c
@@ -9,12 +9,9 @@ uchar mem[32768];
 uchar ppuram[16384];
 uchar oam[256];
 uchar *prgb[2], *chrb[2];
-extern uchar *prg, *chr;
-extern int nprg, nchr;
 u16int pput, ppuv;
 u8int ppusx;
 static int vramlatch = 1, keylatch = 0xFF;
-extern int keys, nmi, map, mirr;
 
 static void
 nrom(int p, u8int)
diff --git a/sys/src/games/nes/ppu.c b/sys/src/games/nes/ppu.c
index 197f70748..2301d5565 100644
--- a/sys/src/games/nes/ppu.c
+++ b/sys/src/games/nes/ppu.c
@@ -2,12 +2,12 @@
 #include <libc.h>
 #include <thread.h>
 #include <draw.h>
+#include <mouse.h>
 #include "dat.h"
 #include "fns.h"
 
 int ppuy, ppux, odd;
 uchar pic[256*240*4*9];
-extern uchar oam[256];
 
 static void
 pixel(int x, int y, int val, int back)
@@ -248,8 +248,21 @@ static void
 flush(void)
 {
 	extern Rectangle picr;
-	extern Image *tmp;
+	extern Image *tmp, *bg;
+	extern Mousectl *mc;
+	Mouse m;
+	Point p;
 
+	while(nbrecv(mc->c, &m) > 0)
+		;
+	if(nbrecvul(mc->resizec) > 0){
+		if(getwindow(display, Refnone) < 0)
+			sysfatal("resize failed: %r");
+		p = divpt(addpt(screen->r.min, screen->r.max), 2);
+		picr = (Rectangle){subpt(p, Pt(scale * 128, scale * 120)), addpt(p, Pt(scale * 128, scale * 120))};
+		bg = allocimage(display, Rect(0, 0, 1, 1), screen->chan, 1, 0xCCCCCCFF);
+		draw(screen, screen->r, bg, nil, ZP);
+	}
 	if(tmp){
 		loadimage(tmp, tmp->r, pic, 256*240*4*scale*scale);
 		draw(screen, picr, tmp, nil, ZP);