Added the new pong program for Sortix!

Makefile

@@ -5,7 +5,7 @@ endif
 REMOTE=192.168.2.6
 REMOTEUSER=sortie
 REMOTECOPYDIR:=/home/$(REMOTEUSER)/Desktop/MaxsiOS
-MODULES=libmaxsi hello sortix
+MODULES=libmaxsi hello pong sortix
 
 VERSION=0.4
 DEBNAME:=sortix_$(VERSION)_$(CPU)

pong/.gitignore

@@ -0,0 +1,7 @@
+*.o
+*.tmp
+*.bin
+*.iso
+*.so
+*.a
+pong

pong/Makefile

@@ -0,0 +1,15 @@
+# Set up variables such that we can easily cross-compile.
+OSROOT=..
+include ../crosscompilemakefile.mak
+
+all: pong
+
+pong: pong.o
+	$(LD) $(LDFLAGS) pong.o -o pong $(LIBS)
+
+pong.o: pong.cpp
+	$(CXX) $(CPPFLAGS) $(CXXFLAGS) -O2 -c pong.cpp -o pong.o
+
+clean:
+	rm -f pong.o pong
+

pong/pong.cpp

@@ -0,0 +1,206 @@
+#include <libmaxsi/platform.h>
+#include <libmaxsi/io.h>
+#include <libmaxsi/thread.h>
+#include <libmaxsi/keyboard.h>
+#include <libmaxsi/sortix-vga.h>
+#include <libmaxsi/sortix-keyboard.h>
+#include <libmaxsi/sortix-sound.h>
+
+using namespace Maxsi;
+using namespace Maxsi::Keyboard;
+
+int Init();
+void Reset();
+void ClearScreen();
+void Collision();
+void Goal(nat player);
+void UpdateUI();
+void Update();
+void ReadInput();
+int main(int argc, char* argv[]);
+
+const int width = 80;
+const int height = 25;
+const int padsize = 5;
+
+const unsigned goalfreq = 800;
+const unsigned collisionfreq = 1200;
+
+System::VGA::Frame* frame;
+
+int ballx;
+int bally;
+int oldballx;
+int oldbally;
+int ballvelx;
+int ballvely;
+int p1y;
+int p2y;
+bool p1vup;
+bool p1vdown;
+bool p2vup;
+bool p2vdown;
+unsigned p1score;
+unsigned p2score;
+unsigned time;
+unsigned soundleft;
+
+int Init()
+{
+	frame = System::VGA::CreateFrame();
+	if ( frame == NULL )
+	{
+		StdOut::Print("Could not create VGA frame\n");
+		return -1;
+	}
+
+	System::VGA::ChangeFrame(frame->fd);
+
+	Reset();
+
+	return 0;
+}
+
+void Reset()
+{
+	ClearScreen();
+
+	ballx = width/2;
+	bally = height/2;
+	oldballx = ballx;
+	oldbally = bally;
+	ballvelx = -1;
+	ballvely = -1;
+	p1y = (height-padsize) / 5;
+	p2y = (height-padsize) / 5;
+	p1vup = false;
+	p1vdown = false;
+	p2vup = false;
+	p2vdown = false;
+	p1score = 0;
+	p2score = 0;
+	time = 0;
+	soundleft = -1;
+}
+
+void ClearScreen()
+{
+	for ( int y = 0; y < height; y++ )
+	{
+		uint16_t color = COLOR8_BLACK << 8;
+
+		for ( int x = 0; x < width; x++ )
+		{
+			frame->text[x + y*width] = ' ' | color;
+		}
+	}
+}
+
+void Collision()
+{
+	System::Sound::SetFrequency(collisionfreq);
+	soundleft = 40;
+}
+
+void Goal(nat player)
+{
+	frame->text[ballx + bally*width] = ' ' | (COLOR8_WHITE << 8);
+
+	ballx = width/2;
+	bally = height/2;
+
+	if ( player == 1 )
+	{
+		ballvelx = 1;
+		ballvely = 1;
+		p1score++;
+	}
+	else if ( player == 2 )
+	{
+		ballvelx = -1;
+		ballvely = -1;
+		p2score++;
+	}
+
+	System::Sound::SetFrequency(goalfreq);
+	soundleft = 50;
+
+	UpdateUI();	
+}
+
+void UpdateUI()
+{
+	for ( int x = 0; x < width; x++ ) { frame->text[x] = ' ' | (COLOR8_LIGHT_GREY << 12) | (COLOR8_RED << 8); }
+}
+
+void Update()
+{
+	int p1v = 0, p2v = 0;
+
+	if ( p1vup && !p1vdown ) { p1v = -1; } else if ( !p1vup && p1vdown ) { p1v = 1; }
+	if ( p2vup && !p2vdown ) { p2v = -1; } else if ( !p2vup && p2vdown ) { p2v = 1; }
+
+	if ( p1v < 0 && p1y > 1 ) { p1y--; }
+	if ( p1v > 0 && p1y + padsize < height ) { p1y++; }
+	if ( p2v < 0 && p2y > 1 ) { p2y--; }
+	if ( p2v > 0 && p2y + padsize < height ) { p2y++; }
+
+	for ( int y = 1; y < height; y++ )
+	{
+		uint16_t color = ( y < p1y || y >= p1y + padsize ) ? COLOR8_BLACK << 12 : COLOR8_RED << 12; frame->text[y*width] = ' ' | color;
+	}
+
+	for ( int y = 1; y < height; y++ )
+	{
+		uint16_t color = ( y < p2y || y >= p2y + padsize ) ? COLOR8_BLACK << 12 : COLOR8_BLUE << 12; frame->text[width-1 + y*width] = ' ' | color;
+	}
+
+	if ( bally + ballvely <= 1 ) { ballvely = 0 - ballvely; Collision(); }
+	if ( bally + ballvely >= height ) { ballvely = 0 - ballvely; Collision(); }
+
+	if ( ballx + ballvelx < 1 ) { if ( bally + ballvely < p1y - 1 || bally + ballvely > p1y + padsize + 1 ) { Goal(2); } else { ballvelx = 0 - ballvelx; Collision(); } }
+	if ( ballx + ballvelx >= width-1 ) { if ( bally + ballvely < p2y - 1 || bally + ballvely > p2y + padsize + 1 ) { Goal(1); } else { ballvelx = 0 - ballvelx; Collision(); } }
+
+	frame->text[oldballx + oldbally*width] = ' ' | (COLOR8_WHITE << 8);
+	frame->text[ballx + bally*width] = '.' | (COLOR8_WHITE << 8);
+	oldballx = ballx; oldbally = bally;
+
+	ballx += ballvelx;
+	bally += ballvely;
+
+	frame->text[ballx + bally*width] = 'o' | (COLOR8_WHITE << 8);
+}
+
+void ReadInput()
+{
+	unsigned method = System::Keyboard::POLL;
+	uint32_t codepoint;
+	while ( (codepoint = System::Keyboard::ReceieveKeystroke(method) ) != 0 )
+	{
+		bool keyup = codepoint & DEPRESSED;
+		codepoint &= ~DEPRESSED;
+
+		if ( codepoint == '\n' && keyup ) { Reset(); }
+		if ( codepoint == 'w' || codepoint == 'W' ) { p1vup = !keyup; }
+		if ( codepoint == 's' || codepoint == 'S' ) { p1vdown = !keyup; }
+		if ( codepoint == UP ) { p2vup = !keyup; }
+		if ( codepoint == DOWN ) { p2vdown = !keyup; }
+	}
+}
+
+int main(int argc, char* argv[])
+{
+	int result = Init();
+	if ( result != 0 ) { return result; }
+
+	while (true)
+	{
+		ReadInput();
+		Update();
+		UpdateUI();
+		Thread::USleep(50 * 1000);
+	}
+
+	return 0;
+}
+