From: James Bunton <jamesbunton@fastmail.fm>
Date: Sat, 23 Jun 2007 11:57:25 +0000 (+1000)
Subject: Optional AI, scores now reset when they hit 9
X-Git-Url: https://code.delx.au/pong/commitdiff_plain/d1366e791c4c99aff584ad4c400c7f81aee76031?hp=892a3db8c3df3ef9fae4711a0d75d620956c36c3

Optional AI, scores now reset when they hit 9
---

diff --git a/pong.c b/pong.c
index ad2abda..6f2ec4c 100644
--- a/pong.c
+++ b/pong.c
@@ -16,6 +16,7 @@
 #define PADDLESIZE  10
 #define HEIGHT      100
 
+static int AI = 0;
 static int p1move = 0;
 static int p2move = 0;
 static int score1 = 0;
@@ -39,6 +40,16 @@ static void initball(void) {
 }
 
 static void run(void) {
+	// AI
+	if(AI) {
+		if(ballY < paddle2 - PADDLESIZE)
+			p2move = -1;
+		else if(ballY > paddle2 + PADDLESIZE)
+			p2move = 1;
+		else
+			p2move = 0;
+	}
+
 	// Move the paddles
 	paddle1 += p1move * PADDLESPEED;
 	paddle2 += p2move * PADDLESPEED;
@@ -66,17 +77,25 @@ static void run(void) {
 	if(ballX >= HEIGHT) {
 		++score1;
 		initball();
-		return;
 	}
 	if(ballX <= -HEIGHT) {
 		++score2;
 		initball();
-		return;
 	}
 
 	// Move the ball
 	ballX += ballVecX;
 	ballY += ballVecY;
+
+	// Check scores for winners..
+	if(score1 == 9) {
+		// Player 1 wins
+		score1 = score2 = 0;
+	}
+	if(score2 == 9) {
+		// Player 2 wins
+		score1 = score2 = 0;
+	}
 }
 
 static void display(void) {
@@ -175,6 +194,10 @@ static void init(void) {
 }
 
 int main(int argc, char *argv[]) {
+	if(argc == 2 && *argv[1] == '1') {
+		AI = 1;
+	}
+
 	glutInitWindowPosition(100, 100);
 	glutInitWindowSize(640, 480);
 	glutInit(&argc, argv);