Game entry for the Game Programming Contest sponsored by OutrageousCircuits.com (RETRO Game Console)
Fork of Official_RETRO by
Game.cpp
- Committer:
- john_ghielec
- Date:
- 2014-11-17
- Revision:
- 1:cd8a3926f263
- Child:
- 2:6ab46f2e851a
File content as of revision 1:cd8a3926f263:
#include "Game.h" const char* Game::LOSE_1 = "You lose."; const char* Game::LOSE_2 = "Press ship to restart."; const char* Game::SPLASH = "Press ship to start."; Game::Game() : left(P0_14, PullUp), right(P0_11, PullUp), down(P0_12, PullUp), up(P0_13, PullUp), square(P0_16, PullUp), circle(P0_1, PullUp), led1(P0_9), led2(P0_8), pwm(P0_18), ain(P0_15), i2c(P0_5, P0_4) { srand(this->ain.read_u16()); this->initialize(); } void Game::initialize() { this->initializeBall(); this->paddleX = DisplayN18::WIDTH / 2 - Game::PADDLE_WIDTH / 2; this->pwmTicksLeft = 0; this->lives = 4; this->pwm.period_ms(1); this->pwm.write(0.00); this->disp.clear(); } void Game::initializeBall() { this->ballX = DisplayN18::WIDTH / 2 - Game::BALL_RADIUS; this->ballY = DisplayN18::HEIGHT / 4 - Game::BALL_RADIUS; this->ballSpeedX = rand() % (Game::MAX_BALL_SPEED * 2); this->ballSpeedY = rand() % (Game::MAX_BALL_SPEED * 2); this->ballSpeedX -= Game::MAX_BALL_SPEED; this->ballSpeedY -= Game::MAX_BALL_SPEED; if (this->ballSpeedX == 0) this->ballSpeedX++; if (this->ballSpeedY == 0) this->ballSpeedY--; } void Game::tick() { this->clearPaddle(); this->clearBall(); this->updatePaddle(); this->updateBall(); this->checkCollision(); this->drawPaddle(); this->drawBall(); this->checkPwm(); this->checkLives(); } void Game::drawString(const char* str, int y) { this->disp.drawString(DisplayN18::WIDTH / 2 - (DisplayN18::CHAR_WIDTH + DisplayN18::CHAR_SPACING) * strlen(str) / 2, y, str, DisplayN18::WHITE, DisplayN18::BLACK); } void Game::showSplashScreen() { this->drawString(Game::SPLASH, DisplayN18::HEIGHT / 2 - DisplayN18::CHAR_HEIGHT / 2); while (this->circle.read()) wait_ms(1); this->disp.clear(); } void Game::clearPaddle() { this->disp.fillRect(this->paddleX, DisplayN18::HEIGHT - Game::PADDLE_HEIGHT, Game::PADDLE_WIDTH, Game::PADDLE_HEIGHT, DisplayN18::BLACK); } void Game::drawPaddle() { this->disp.fillRect(this->paddleX, DisplayN18::HEIGHT - Game::PADDLE_HEIGHT, Game::PADDLE_WIDTH, Game::PADDLE_HEIGHT, DisplayN18::BLUE); } void Game::updatePaddle() { if (this->left.read()) this->paddleX += Game::PADDLE_SPEED; if (this->right.read()) this->paddleX -= Game::PADDLE_SPEED; } void Game::clearBall() { this->disp.fillRect(this->ballX - Game::BALL_RADIUS, ballY - Game::BALL_RADIUS, Game::BALL_RADIUS * 2, Game::BALL_RADIUS * 2, DisplayN18::BLACK); } void Game::drawBall() { this->disp.fillRect(this->ballX - Game::BALL_RADIUS, ballY - Game::BALL_RADIUS, Game::BALL_RADIUS * 2, Game::BALL_RADIUS * 2, DisplayN18::RED); } void Game::updateBall() { this->ballX += this->ballSpeedX; this->ballY += this->ballSpeedY; } void Game::checkCollision() { if (this->paddleX < 0) this->paddleX = 0; if (this->paddleX + Game::PADDLE_WIDTH > DisplayN18::WIDTH) this->paddleX = DisplayN18::WIDTH - Game::PADDLE_WIDTH; if ((this->ballX - Game::BALL_RADIUS < 0 && this->ballSpeedX < 0) || (this->ballX + Game::BALL_RADIUS >= DisplayN18::WIDTH && this->ballSpeedX > 0)) this->ballSpeedX *= -1; if (this->ballY - Game::BALL_RADIUS < 0 && this->ballSpeedY < 0) this->ballSpeedY *= -1; if (this->ballY + Game::BALL_RADIUS >= DisplayN18::HEIGHT - Game::PADDLE_HEIGHT && this->ballSpeedY > 0) { if (this->ballY + Game::BALL_RADIUS >= DisplayN18::HEIGHT) { this->initializeBall(); this->lives--; } else if (this->ballX > this->paddleX && this->ballX < this->paddleX + Game::PADDLE_WIDTH) { this->ballSpeedY *= -1; this->pwmTicksLeft = Game::BOUNCE_SOUND_TICKS; } } } void Game::checkPwm() { if (this->pwmTicksLeft == 0) { this->pwm.write(0.0); } else { this->pwmTicksLeft--; this->pwm.write(0.5); } } void Game::checkLives() { if (this->lives == 0) { this->disp.clear(); this->drawString(Game::LOSE_1, DisplayN18::HEIGHT / 2 - DisplayN18::CHAR_HEIGHT); this->drawString(Game::LOSE_2, DisplayN18::HEIGHT / 2); while (this->circle.read()) wait_ms(1); this->initialize(); } else { this->disp.drawCharacter(0, 0, static_cast<char>(this->lives + '0'), DisplayN18::WHITE, DisplayN18::BLACK); } }