make movies load faster

src/movie.cpp

@@ -113,15 +113,26 @@ void MovieRecord::dumpJoy(std::ostream* os, uint8 joystate)
 
 void MovieRecord::parseJoy(std::istream* is, uint8& joystate)
 {
+	char buf[8];
+	is->read(buf,8);
 	joystate = 0;
-	for(int bit=7;bit>=0;bit--)
+	for(int i=0;i<8;i++)
 	{
-		int c = is->get();
-		if(c == -1)
-			return;
-		if(c != ' ')
-			joystate |= (1<<bit);
+		joystate <<= 1;
+		joystate |= ((buf[i]!=' ')?1:0);
 	}
+	
+	//older, slower(?) way:
+
+	//joystate = 0;
+	//for(int bit=7;bit>=0;bit--)
+	//{
+	//	int c = is->get();
+	//	if(c == -1)
+	//		return;
+	//	if(c != ' ')
+	//		joystate |= (1<<bit);
+	//}
 }
 
 void MovieRecord::parse(MovieData* md, std::istream* is)
@@ -129,7 +140,7 @@ void MovieRecord::parse(MovieData* md, std::istream* is)
 	//by the time we get in here, the initial pipe has already been extracted
 
 	//extract the commands
-	*is >> commands;
+	commands = uintDecFromIstream(is);
 	is->get(); //eat the pipe
 
 	//a special case: if fourscore is enabled, parse four gamepads
@@ -150,6 +161,7 @@ void MovieRecord::parse(MovieData* md, std::istream* is)
 			{
 				int x,y,b;
 				*is >> x >> y >> b;
+				//todo: test uintDecFromIstream
 				zappers[port].x = x;
 				zappers[port].y = y;
 				zappers[port].b = b;

src/utils/xstring.cpp

@@ -462,3 +462,19 @@ char *U8ToHexStr(uint8 a)
 	TempArray[2] = 0;
 	return TempArray;
 }
+
+unsigned int uintDecFromIstream(std::istream* is)
+{
+	unsigned int ret = 0;
+
+	for(;;)
+	{
+		int d = is->get() - '0';
+		if(d<0 || d>9)
+			break;
+		ret *= 10;
+		ret += d;
+	}
+	is->unget();
+	return ret;
+}

src/utils/xstring.h

@@ -21,6 +21,7 @@
 #include <string.h>
 #include <stdlib.h>
 #include <vector>
+#include <iostream>
 
 #include "../types.h"
 
@@ -53,3 +54,6 @@ char *U32ToDecStr(char* buf, uint32 a);
 char *U8ToDecStr(uint8 a);
 char *U8ToHexStr(uint8 a);
 char *U16ToHexStr(uint16 a);
+
+//extracts a decimal uint from an istream
+unsigned int uintDecFromIstream(std::istream* is);