C-Kurs/Pong/Musterlösung - Versionsgeschichte

PaulG: verschob „Ckurs/Pong/Musterlösung“ nach „C-Kurs/Pong/Musterlösung“

2013-03-05T17:37:15Z

verschob „Ckurs/Pong/Musterlösung“ nach „C-Kurs/Pong/Musterlösung“

Mutax: hat „Ckurs2009/Pong/Musterlösung“ nach „Ckurs/Pong/Musterlösung“ verschoben: Aufgaben sind Kurs übergreifend nutzbar

2010-07-25T11:47:11Z

hat „Ckurs2009/Pong/Musterlösung“ nach „Ckurs/Pong/Musterlösung“ verschoben: Aufgaben sind Kurs übergreifend nutzbar

Alexander Kührmann: Zusatz-KI Müsterlösung

2009-09-25T09:28:00Z

Zusatz-KI Müsterlösung

Alexander Kührmann: /* Musterlösung */

2009-09-21T19:59:52Z

‎Musterlösung

Alexander Kührmann: Die Seite wurde neu angelegt: „== Musterlösung ==

 #include   /* dimensions of the field */ #define WIDTH 40 #define HEIGHT 15 #define PADDLE_HEIGHT 3  /* positions of playing t...“

2009-09-19T16:52:59Z

Die Seite wurde neu angelegt: „== Musterlösung == <pre> #include <curses.h> ‎dimensions of the field: #define WIDTH 40 #define HEIGHT 15 #define PADDLE_HEIGHT 3 /* positions of playing t...“

Neue Seite

== Musterlösung ==
<pre>
#include <curses.h>

/* dimensions of the field */
#define WIDTH 40
#define HEIGHT 15
#define PADDLE_HEIGHT 3

/* positions of playing things */
int pos_p1_y;
int pos_p2_y;
int pos_ball_x;
int pos_ball_y;
int dir_ball_x;
int dir_ball_y;

/* scores */
int score_p1 = 0;
int score_p2 = 0;

void init() {
initscr(); // init for curses
noecho(); // don't display typed chars
cbreak(); // don't buffer terminal lines
keypad(stdscr, TRUE); // for special key (e.g. arrow keys)
halfdelay(1); // wait only for 1/10 s in getch()
}

void place_paddles() {
pos_p1_y = HEIGHT / 2 - PADDLE_HEIGHT / 2;
pos_p2_y = HEIGHT / 2 - PADDLE_HEIGHT / 2;
}

void place_ball(int dir_x) {
pos_ball_x = WIDTH / 2;
pos_ball_y = HEIGHT / 2;
dir_ball_x = dir_x;
dir_ball_y = 1;
}

void print_field() {
clear();
int x,y;

// print score
printw(" %i %i\n", score_p1, score_p2);

// print upper frame
printw("+");
for(x=0; x<WIDTH; x++) {
printw("-");
}
printw("+\n");

for (y=0; y<HEIGHT; y++) {
// first column (x==0) is for player1's paddle
if (y >= pos_p1_y && y < pos_p1_y+PADDLE_HEIGHT) {
printw("|#");
} else if (pos_ball_x == 0 && pos_ball_y == y) {
printw("|*");
} else {
printw("| ");
}

// middle columns (0 < x < WIDTH-1) anywhere the ball can be
for (x=1; x<WIDTH-1; x++) {
if (y == pos_ball_y && x == pos_ball_x) {
printw("*");
} else {
printw(" ");
}
}

// last column (x==WIDTH-1) is for player2's paddle
if (y >= pos_p2_y && y < pos_p2_y+PADDLE_HEIGHT) {
printw("#|\n");
} else if (pos_ball_x == WIDTH-1 && pos_ball_y == y) {
printw("*|\n");
} else {
printw(" |\n");
}
}

// print lower frame
printw("+");
for(x=0; x<WIDTH; x++) {
printw("-");
}
printw("+\n");

refresh();
}

void key_processing() {
int ch = getch();
if (ch == KEY_UP) {
if (pos_p1_y > 0) {
pos_p1_y--;
}
} else if (ch == KEY_DOWN) {
if (pos_p1_y < HEIGHT-PADDLE_HEIGHT) {
pos_p1_y++;
}
} else if (ch == 'w') {
if (pos_p2_y > 0) {
pos_p2_y--;
}
} else if (ch == 's') {
if (pos_p2_y < HEIGHT-PADDLE_HEIGHT) {
pos_p2_y++;
}
}
}

void detect_collision() {
// ball collides with upper/lower bounds
if (pos_ball_y <= 0 || pos_ball_y >= HEIGHT-1) {
dir_ball_y *= -1;
}

// ball collides with player1's paddle
if (pos_ball_x == 1 && pos_ball_y >= pos_p1_y && pos_ball_y < pos_p1_y + PADDLE_HEIGHT) {
dir_ball_x *= -1;
}

// ball collides with player2's paddle
if (pos_ball_x == WIDTH-2 && pos_ball_y >= pos_p2_y && pos_ball_y < pos_p2_y + PADDLE_HEIGHT) {
dir_ball_x *= -1;
}
}

void move_ball() {
pos_ball_x += dir_ball_x;
pos_ball_y += dir_ball_y;
}

int detect_ball_out() {
// ball is out on left side -> point for player2
if (pos_ball_x <= 0) {
return 2;
}

// ball is out on right side -> point for player1
if (pos_ball_x >= WIDTH-1) {
return 1;
}

return 0;
}

int play_round() {
int ball_out;
while( !(ball_out = detect_ball_out()) ) {
key_processing();
detect_collision();
move_ball();
print_field();
}
return ball_out;
}

int main() {
init();
place_paddles();
place_ball(1);

while(score_p1 < 10 && score_p2 < 10) {
int round_won = play_round();
if (round_won == 1) {
score_p1++;
place_ball(1);
} else if (round_won == 2) {
score_p2++;
place_ball(-1);
}
sleep(1);
}

if (score_p1 < score_p2) {
printw("Player 1 wins!\n");
} else {
printw("Player 2 wins!\n");
}
refresh();
sleep(3);

endwin();
}
</pre>

== Kommentare ==
Wenn du Anmerkungen zur Aufgabe hast oder Lob und Kritik loswerden möchtest, ist hier die richtige Stelle dafür. Klicke einfach ganz rechts auf "bearbeiten" und schreibe deinen Kommentar direkt ins Wiki. Keine Scheu, es geht nichts kaputt ;)

← Nächstältere Version	Version vom 5. März 2013, 17:37 Uhr
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← Nächstältere Version	Version vom 25. Juli 2010, 11:47 Uhr
(kein Unterschied)

@@ Zeile 194: / Zeile 194: @@
 	endwin();
+}
 </pre>
@@ Zeile 199: / Zeile 235: @@
 == Kommentare ==
 Wenn du Anmerkungen zur Aufgabe hast oder Lob und Kritik loswerden möchtest, ist hier die richtige Stelle dafür. Klicke einfach ganz rechts auf "bearbeiten" und schreibe deinen Kommentar direkt ins Wiki. Keine Scheu, es geht nichts kaputt ;)

@@ Zeile 1: / Zeile 1: @@
 == Musterlösung ==
 <pre>
 #include <curses.h>
@@ Zeile 8: / Zeile 9: @@
 #define PADDLE_HEIGHT 3
-/* positions of playing things */
+/* positions of play things */
 int pos_p1_y;
 int pos_p2_y;
@@ Zeile 21: / Zeile 22: @@
 void init() {
-	initscr(); // init for curses
+	initscr(); /* init for curses */
-	noecho();  // don't display typed chars
+	noecho();  /* don't display typed chars */
-	cbreak();  // don't buffer terminal lines
+	cbreak();  /* don't buffer terminal lines */
-	keypad(stdscr, TRUE);  // for special key (e.g. arrow keys)
+	keypad(stdscr, TRUE);  /* for special keys (e.g. arrow keys) */
-	halfdelay(1); // wait only for 1/10 s in getch()
+	nodelay(stdscr, TRUE); /* don't block in getch() */
+}
@@ Zeile 44: / Zeile 45: @@
 	int x,y;
-	// print score
+	/* print score */
 	printw("         %i                     %i\n", score_p1, score_p2);
-	// print upper frame
+	/* print upper frame */
 	printw("+");
 	for(x=0; x<WIDTH; x++) {
@@ Zeile 55: / Zeile 56: @@
 	for (y=0; y<HEIGHT; y++) {
-		// first column (x==0) is for player1's paddle
+		/* first column (x==0) is for player1's paddle */
 		if (y >= pos_p1_y && y < pos_p1_y+PADDLE_HEIGHT) {
 			printw("|#");
@@ Zeile 64: / Zeile 65: @@
+		}
-		// middle columns (0 < x < WIDTH-1) anywhere the ball can be
+		/* middle columns (0 < x < WIDTH-1) anywhere the ball can be */
 		for (x=1; x<WIDTH-1; x++) {
 			if (y == pos_ball_y && x == pos_ball_x) {
@@ Zeile 73: / Zeile 74: @@
+		}
-		// last column (x==WIDTH-1) is for player2's paddle
+		/* last column (x==WIDTH-1) is for player2's paddle */
 		if (y >= pos_p2_y && y < pos_p2_y+PADDLE_HEIGHT) {
 			printw("#|\n");
@@ Zeile 83: / Zeile 84: @@
+	}
-	// print lower frame
+	/* print lower frame */
 	printw("+");
 	for(x=0; x<WIDTH; x++) {
@@ Zeile 115: / Zeile 116: @@
 void detect_collision() {
-	// ball collides with upper/lower bounds
+	/* ball collides with upper/lower bounds */
 	if (pos_ball_y <= 0 || pos_ball_y >= HEIGHT-1) {
 		dir_ball_y *= -1;
+	}
-	// ball collides with player1's paddle
+	/* ball collides with player1's paddle */
 	if (pos_ball_x == 1 && pos_ball_y >= pos_p1_y && pos_ball_y < pos_p1_y + PADDLE_HEIGHT) {
 		dir_ball_x *= -1;
+	}
-	// ball collides with player2's paddle
+	/* ball collides with player2's paddle */
 	if (pos_ball_x == WIDTH-2 && pos_ball_y >= pos_p2_y && pos_ball_y < pos_p2_y + PADDLE_HEIGHT) {
 		dir_ball_x *= -1;
@@ Zeile 137: / Zeile 138: @@
 int detect_ball_out() {
-	// ball is out on left side -> point for player2
+	/* ball is out on left side -> point for player2 */
 	if (pos_ball_x <= 0) {
 		return 2;
+	}
-	// ball is out on right side -> point for player1
+	/* ball is out on right side -> point for player1 */
 	if (pos_ball_x >= WIDTH-1) {
 		return 1;
@@ Zeile 152: / Zeile 153: @@
 int play_round() {
 	int ball_out;
 	while( !(ball_out = detect_ball_out()) ) {
 		key_processing();
-		detect_collision();
+		if(count == 0) {
-		move_ball();
+			move_ball();
 		print_field();
+	}
 	return ball_out;
@@ Zeile 176: / Zeile 182: @@
+		}
 		sleep(1);
+	}
-	if (score_p1 < score_p2) {
+	if (score_p1 > score_p2) {
 		printw("Player 1 wins!\n");
 	} else {