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#include "pong.h"
#include "screen.h"
#include <time.h>
#include <math.h>
static uint8_t delay = 10;
static uint8_t rightScore = 0;
static uint8_t leftScore = 0;
void Delay ( const uint8_t seconds ) {
const clock_t start = clock();
while ( clock() < start + seconds * 1000 )
;
}
void PrintScore ( void ) {
printf( "Left: %3d\tRight: %3d\n", leftScore, rightScore );
}
void Score ( uint8_t * const score, ball_t * const ball ) {
(*score)++;
PrintScore();
Reset( ball );
if ( delay > 2 ) {
delay += ( abs( rightScore - leftScore ) > 5 ) ? -1 : 0;
}
}
int main ( void ) {
paddle_t leftPaddle = { { 0, 0 }, { 0, 0 }, 16, 48 },
rightPaddle = { { SCREEN_WIDTH - 16, 0 }, { 0, 0 }, 16, 48 };
ball_t ball = { { SCREEN_WIDTH >> 1, SCREEN_HEIGHT >> 1 }, { 1, 1 }, 16, 16 };
bool quit = false;
SDL_Event e;
if ( !InitScreen() ) {
printf( "Failed to initalize!\n" );
return -1;
}
Draw( ball, ballSurface );
SDL_UpdateWindowSurface( gWindow );
Draw( leftPaddle, leftPaddleSurface);
SDL_UpdateWindowSurface( gWindow );
Draw( rightPaddle, rightPaddleSurface );
SDL_UpdateWindowSurface( gWindow );
while ( quit == false ) {
UpdatePosition( &ball.position, ball.velocity );
ClearScreen();
Draw( ball, ballSurface );
if ( CheckGroundCollision( ball ) || CheckCeilingCollision( ball ) ) {
ball.velocity.y *= -1;
} else if ( CheckLeftWallCollision( ball ) ) {
Score( &rightScore, &ball );
} else if ( CheckRightWallCollision( ball ) ) {
Score( &leftScore, &ball );
}else if ( CheckMoveableCollision( leftPaddle, ball ) || CheckMoveableCollision( ball, rightPaddle ) ) {
ball.velocity.x *= -1;
}
while ( SDL_PollEvent( &e ) != 0 ) {
if ( e.type == SDL_QUIT ) {
quit = true;
} else if ( e.type == SDL_KEYDOWN ) {
switch ( e.key.keysym.sym ) {
case SDLK_UP:
if ( CheckCeilingCollision( rightPaddle ) ) {
rightPaddle.velocity.y = 0;
rightPaddle.position.y = 0;
} else {
rightPaddle.velocity.y = -10;
UpdatePosition( &rightPaddle.position, rightPaddle.velocity );
}
break;
case SDLK_DOWN:
if ( CheckGroundCollision( rightPaddle ) ) {
rightPaddle.velocity.y = 0;
rightPaddle.position.y = SCREEN_HEIGHT - rightPaddle.height;
} else {
rightPaddle.velocity.y = 10;
UpdatePosition( &rightPaddle.position, rightPaddle.velocity );
}
break;
case SDLK_w:
if ( CheckCeilingCollision( leftPaddle ) ) {
leftPaddle.velocity.y = 0;
leftPaddle.position.y = 0;
} else {
leftPaddle.velocity.y = -10;
UpdatePosition( &leftPaddle.position, leftPaddle.velocity );
}
break;
case SDLK_s:
if ( CheckGroundCollision( leftPaddle ) ) {
leftPaddle.velocity.y = 0;
leftPaddle.position.y = SCREEN_HEIGHT - leftPaddle.height;
} else {
leftPaddle.velocity.y = 10;
UpdatePosition( &leftPaddle.position, leftPaddle.velocity );
}
break;
default:
break;
}
} else if ( e.type == SDL_KEYUP ) {
switch ( e.key.keysym.sym ) {
case SDLK_UP:
case SDLK_DOWN:
rightPaddle.velocity.y = 0;
break;
case SDLK_w:
case SDLK_s:
leftPaddle.velocity.y = 0;
break;
default:
break;
}
}
}
Draw ( rightPaddle, rightPaddleSurface );
Draw ( leftPaddle, leftPaddleSurface );
SDL_UpdateWindowSurface( gWindow );
Delay( delay );
}
Close();
return 0;
}
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