void initDefaultBall(Ball *ball)
{
ball->x = FPMAKE((DEFAULT_COURT_WIDTH/2 - DEFAULT_BALL_WIDTH/2),0);
ball->y = FPMAKE((DEFAULT_COURT_HEIGHT/2 - DEFAULT_BALL_HEIGHT/2),0);
ball->xVel = 0;
ball->yVel = 0;
ball->height = FPMAKE(DEFAULT_BALL_HEIGHT,0);
ball->width = FPMAKE(DEFAULT_BALL_WIDTH,0);
}
void assembleDefaultPongGame() {
gPngGame.ball = &ball;
gPngGame.paddleOne = &paddleOne;
gPngGame.paddleTwo = &paddleTwo;
gPngGame.court = &court;
gPngGame.useGravity = 1;
gPngGame.gravity = 1;
gPngGame.epsilon = FPMAKE(2,8);
}
void initDefaultCourt(Court *court)
{
court->width = FPMAKE(DEFAULT_COURT_WIDTH,0);
court->height = FPMAKE(DEFAULT_COURT_HEIGHT,0);
court->x = FPMAKE(SCREEN_START_X, 0);
court->y = FPMAKE(SCREEN_START_Y, 0);
court->leftAccAreaWidth = FPMAKE(DEFAULT_LEFT_ACCAREA_WIDTH,0);
court->leftAccAreaX = FPMAKE(DEFAULT_LEFT_ACCAREA_X,0);
court->rightAccAreaWidth = FPMAKE(DEFAULT_RIGHT_ACCAREA_WIDTH,0);
court->rightAccAreaX = FPMAKE(DEFAULT_RIGHT_ACCAREA_X,0);
}
void initDefaultPaddleTwo(Paddle *paddle2)
{
paddle2->x = FPMAKE(DEFAULT_RIGHT_ACCAREA_X,0);
paddle2->y = FPMAKE(DEFAULT_COURT_HEIGHT/2,0);
paddle2->xVel = FPMAKE(0,0);
paddle2->yVel = FPMAKE(0,0);
paddle2->height = FPMAKE(DEFAULT_PADDLE_HEIGHT,0);
paddle2->width = FPMAKE(DEFAULT_PADDLE_WIDTH,0);
}
void initDefaultPaddleOne(Paddle *paddle1)
{
paddle1->x = FPMAKE(DEFAULT_LEFT_ACCAREA_WIDTH,0);
paddle1->y = FPMAKE(DEFAULT_COURT_HEIGHT/2,0);
paddle1->xVel = FPMAKE(0,0);
paddle1->yVel = FPMAKE(0,0);
paddle1->height = FPMAKE(DEFAULT_PADDLE_HEIGHT,0);
paddle1->width = FPMAKE(DEFAULT_PADDLE_WIDTH,0);
}
#include <stdlib.h>
#include <time.h>
static int firstTimeRandom = 1;
GravityDirection randomGravityDirection() {
int randomNumber;
if(firstTimeRandom) {
srand(time(NULL));
firstTimeRandom = 0;
}
randomNumber = rand() % 9;
return (GravityDirection)randomNumber;
}
const GPINT gravityStepPositive = FPMAKE(0,1);
const GPINT gravityStepNegative = -1 * FPMAKE(0,1);
void updateGravity(GPngGame *gPngGame) {
switch(gPngGame->gravityDirection) {
case noGravity:
gPngGame->xGravity = 0;
gPngGame->yGravity = 0;
break;
case northGravity:
gPngGame->xGravity = 0;
gPngGame->yGravity = gravityStepNegative;
break;
case northEastGravity:
gPngGame->xGravity = gravityStepPositive;
gPngGame->yGravity = gravityStepNegative;
break;
void initGameObjects(StartState startState)
{
initDefaultBall(&ball);
initDefaultCourt(&court);
initDefaultPaddleOne(&paddleOne);
initDefaultPaddleTwo(&paddleTwo);
gPngGame.isPlayerOneHuman = 0;
gPngGame.isPlayerTwoHuman = 0;
switch(startState) {
case straightLeft:
paddleTwo.x = FPMAKE(280,0);
paddleTwo.y = FPMAKE(FPINT(gPngGame.court->y), 0);
setBallXVel(-1*FPMAKE(0, 8), &ball);
break;
case straightLeftPaddleTopCollision:
paddleTwo.x = FPMAKE(280,0);
paddleTwo.y = FPMAKE(FPINT(gPngGame.court->y), 0);
paddleOne.x = FPMAKE(35,0);
paddleOne.y = FPMAKE(110,0);
paddleOne.xVel = FPMAKE(0,0);
paddleOne.yVel = FPMAKE(-1,0);
ball.x = FPMAKE(45,0);
ball.y = FPMAKE(100-DEFAULT_BALL_HEIGHT-8,0);
ball.xVel = FPMAKE(-1,0);
ball.yVel = FPMAKE(0,0);
setBallXVel(-1*FPMAKE(0, 8), &ball);
break;
case straightLeftPaddleBottomCollision:
paddleTwo.x = FPMAKE(280,0);
paddleTwo.y = FPMAKE(FPINT(gPngGame.court->y), 0);
paddleOne.x = FPMAKE(35,0);
paddleOne.y = FPMAKE(90,0);
paddleOne.xVel = FPMAKE(0,0);
paddleOne.yVel = FPMAKE(1,0);
ball.x = FPMAKE(45,0);
ball.y = FPMAKE(100+DEFAULT_PADDLE_HEIGHT+8,0);
ball.xVel = FPMAKE(-1,0);
ball.yVel = FPMAKE(0,0);
setBallXVel(-1*FPMAKE(0, 8), &ball);
break;
case straightLeftPaddleNonTopCollision:
paddleOne.x = FPMAKE(24,0);
paddleOne.y = FPMAKE(100,0);
paddleOne.yVel = 0;
paddleOne.xVel = MAX_PADDLE_SPEED_X;
ball.x = FPMAKE(34+DEFAULT_PADDLE_WIDTH,0);
ball.y = FPMAKE(100-DEFAULT_BALL_HEIGHT+1, 0);
ball.xVel = MIN_BALL_SPEED_X;
ball.yVel = 0;
break;
case straightRightNonTopCollision:
paddleOne.x = FPMAKE(344-paddleTwo.width,0);
paddleTwo.y = FPMAKE(100,0);
paddleTwo.yVel = 0;
paddleTwo.xVel = MIN_PADDLE_SPEED_X;
ball.x = FPMAKE(334-ball.width,0);
ball.y = FPMAKE(100-DEFAULT_BALL_HEIGHT+1, 0);
ball.xVel = MAX_BALL_SPEED_X;
ball.yVel = 0;
break;
case straightRightPaddleTopCollision:
paddleTwo.x = FPMAKE(280,0);
paddleTwo.y = FPMAKE(110, 0);
paddleTwo.xVel = FPMAKE(0,0);
paddleTwo.yVel = FPMAKE(-1,0);
paddleOne.x = FPMAKE(35,0);
paddleOne.y = FPMAKE(110,0);
ball.x = FPMAKE(270,0);
ball.y = FPMAKE(100-DEFAULT_BALL_HEIGHT-8,0);
ball.xVel = FPMAKE(1,0);
ball.yVel = FPMAKE(0,0);
setBallXVel(FPMAKE(0, 8), &ball);
break;
case straightRightPaddleBottomCollision:
paddleTwo.x = FPMAKE(280,0);
paddleTwo.y = FPMAKE(90,0);
paddleTwo.xVel = FPMAKE(0,0);
paddleTwo.yVel = FPMAKE(1,0);
paddleOne.x = FPMAKE(35,0);
paddleOne.y = FPMAKE(90,0);
ball.x = FPMAKE(270,0);
ball.y = FPMAKE(100+DEFAULT_PADDLE_HEIGHT+8,0);
ball.xVel = FPMAKE(1,0);
ball.yVel = FPMAKE(0,0);
setBallXVel(FPMAKE(0, 8), &ball);
break;
case straightRightPaddleRearCollision:
paddleOne.x = FPMAKE(DEFAULT_LEFT_ACCAREA_X + DEFAULT_LEFT_ACCAREA_WIDTH - DEFAULT_PADDLE_WIDTH, 0);
paddleOne.y = FPMAKE(100,0);
ball.x = FPMAKE(FPINT(paddleOne.x) - DEFAULT_BALL_WIDTH - 5, 0);
ball.y = FPMAKE(100,0);
setBallXVel(-1*FPMAKE(0, 6), &ball);
setPaddleXVel(FPMAKE(-1,0), &paddleOne);
break;
case straightLeftPaddleRearCollision:
paddleTwo.x = FPMAKE(DEFAULT_RIGHT_ACCAREA_X, 0);
paddleTwo.y = FPMAKE(100,0);
ball.x = FPMAKE(FPINT(paddleTwo.x) + DEFAULT_BALL_WIDTH + 5, 0);
ball.y = FPMAKE(100,0);
setBallXVel(FPMAKE(0, 6), &ball);
setPaddleXVel(FPMAKE(1,0), &paddleTwo);
break;
case noStartState:
gPngGame.isPlayerOneHuman = 1;
gPngGame.isPlayerTwoHuman = 0;
break;
default:
printf("default - please provide a value");
break;
}
assembleDefaultPongGame();
}
