Maxint R&D
Retro game that let's the player steer a ball through a hole filled maze. Has multiple levels of increasing difficulty.
Dependencies: LCD_ST7735 MusicEngine RETRO_BallsAndThings mbed
Ball and Holes
In this game I attempted to create somewhat natural movement of the ball by implementing gravity and friction which combined over time determine the speed of the ball. Playing with the settings (aka. the magic numbers) that are spread out all over game.cpp, gives different effects, such as an icy, rough or liquid-like surface.
It took some time to figure out how to post my very first youtube video. Sorry for the shaky recording. Trying to record the video with my phone while playing the game in one hand was quite challenging, but here it is;
The left and right buttons are used to cheat: restart the current or go to the next level. Up and down control the game-tick. During game-play the robot-button shows the accelerator graph and the ship-button mutes the sound.
BTW. If your ball happens to get stuck, tilting the console in the opposite direction will set it free. For sake of argument: these magnetic wall-ends are in the words of Bob Ross "a happy accident". Since there is no specific code for it, others might call it a bug. As it results in more interesting game-play, I didn't attempt to fix it, but left a comment for those who dare to look at the mess I call code.
Diff: Game.cpp
- Revision:
- 3:ca8b21da67dc
- Parent:
- 2:d4de5a5866fe
- Child:
- 4:4a5f33d845d9
--- a/Game.cpp Tue Feb 03 19:02:27 2015 +0000
+++ b/Game.cpp Wed Feb 04 13:10:36 2015 +0000
@@ -1,6 +1,6 @@
#include "Game.h"
-const char* Game::LOSE_1 = "You lose.";
+const char* Game::LOSE_1 = "Game over.";
const char* Game::LOSE_2 = "Press ship to restart.";
const char* Game::SPLASH_1 = "-*- Balls and paddle -*-";
const char* Game::SPLASH_2 = "Press ship to start.";
@@ -32,14 +32,13 @@
this->lastUp = false;
this->lastDown = false;
- this->mode = true;
+ this->mode = true; // mode: true=game, false=graph
+ this->nGameTickDelay=25; // game tickdelay can be adjusted using up/down
//this->aBalls[2]={ Ball(&disp), Ball(&disp) };
for(int i=0; i<NUM_BALLS; i++)
this->aBalls[i]=Ball(&(this->disp));
-
- //this->initialize();
}
void Game::printDouble(double value, int x, int y)
@@ -65,8 +64,9 @@
// this->paddleX = WIDTH / 2 - Game::PADDLE_WIDTH / 2;
this->snd.reset();
- this->nLives = 4;
+ this->nBalls = 4;
this->nScore = 0;
+ this->nTopWall = 8;
this->tWait.start(); // start the timer
@@ -76,7 +76,8 @@
void Game::initializePaddle()
{
this->paddle.initialize(WIDTH / 2 - Game::PADDLE_WIDTH/2, HEIGHT - Game::PADDLE_HEIGHT, Game::PADDLE_WIDTH, Game::PADDLE_HEIGHT);
- this->paddle.draw();
+ this->fDrawPaddle=true;
+ //this->paddle.draw();
}
@@ -98,39 +99,20 @@
}
}
-
-
-
-/*
-void Game::initializeBall()
-{
- this->ball.initialize(WIDTH / 2 - Game::BALL_RADIUS, HEIGHT / 4 - Game::BALL_RADIUS, Game::BALL_RADIUS, Color565::fromRGB(0xFF, 0x33, 0x33));
- this->ball.setSpeed(rand() % 2 ? 1 : -1, rand() % 2 ? 1 : -1);
+void Game::redrawPaddle()
+{ // redraw the paddle when moved, or when forced by this->fDrawPaddle (set at bounce)
+ this->paddle.redraw(this->fDrawPaddle);
+ this->fDrawPaddle=false;
}
-*/
-
-/*
-void Game::initializeBalls()
-{
- for(int i=0; i<NUM_BALLS; i++)
- {
- this->aBalls[i].initialize(WIDTH / 2 - Game::BALL_RADIUS, HEIGHT / 4 - Game::BALL_RADIUS, Game::BALL_RADIUS, Color565::fromRGB(i==0?0xFF:0x33, i==1?0xFF:0x33, i==2?0xFF:0x33));
- //float ftRandX=rand() % 2 ? 1 : -1;
- float ftRandX=((rand() % 20) - 10)/10 ;
- float ftRandY=rand() % 2 ? 1 : -1;
- this->aBalls[i].setSpeed(ftRandX, ftRandY);
- }
-}
-*/
void Game::setNoBalls()
-{
+{ // make sure no balls are active
for(int i=0; i<NUM_BALLS; i++)
this->aBalls[i].fActive=false;
}
void Game::newBall()
-{
+{ // add a new ball to the game
for(int i=0; i<NUM_BALLS; i++)
{
if(this->aBalls[i].fActive)
@@ -140,9 +122,9 @@
this->aBalls[i].initialize(WIDTH / 2 - Game::BALL_RADIUS, HEIGHT / 4 - Game::BALL_RADIUS, Game::BALL_RADIUS, Color565::fromRGB(i==0?0xFF:0x33, i==1?0xFF:0x33, i==2?0xFF:0x33));
//float ftRandX=rand() % 2 ? 1 : -1;
//float ftRandY=rand() % 2 ? 1 : -1;
- float ftRandX=((rand() % 20) - 10)/5.0;
- float ftRandY=((rand() % 10) - 10)/5.0;
//this->aBalls[i].setSpeed(ftRandX, ftRandY);
+ float ftRandX=((rand() % 20) - 10)/5.0; // left/right at random speed
+ float ftRandY=((rand() % 10) - 10)/5.0; // up at random speed
this->aBalls[i].vSpeed.set(ftRandX, ftRandY);
this->aBalls[i].fActive=true;
break;
@@ -160,7 +142,7 @@
this->aBalls[i].update(); // update the ball position
// add downward gravity
- if(this->aBalls[i].vSpeed.getSize() != 0 && this->aBalls[i].vSpeed.getSize()<10.0) // TODO: added if statement to allow zero speed pause of ball
+ if(this->aBalls[i].vSpeed.getSize()<10.0)
this->aBalls[i].vSpeed.add(this->vGravity); // add some gravity
}
@@ -220,13 +202,13 @@
this->checkBallsCollision();
// this->ball.redraw();
this->redrawBalls();
- this->paddle.redraw();
+ this->redrawPaddle();
this->snd.checkPwm();
//this->checkScore();
- this->checkLives();
+ this->checkBalls();
- wait_ms(25);
+ wait_ms(this->nGameTickDelay); // can be adjusted using up/down
}
else {
this->accel.updateGraph();
@@ -255,8 +237,9 @@
void Game::checkButtons()
{
- if (!this->square.read())
+ if(!this->square.read()) // note: button.read() is false (LOW/0) when pressed
{
+ wait_ms(250); // el-cheapo deboounce
this->mode = !this->mode;
//this->disp.clear();
@@ -270,6 +253,14 @@
this->led1.write(this->mode);
this->led2.write(!this->mode);
}
+ else if(!this->circle.read() && this->mode) // note: button.read() is false (LOW/0) when pressed
+ {
+ bool fMute=this->snd.getMute();
+ fMute=!fMute;
+ this->snd.setMute(fMute);
+ this->led2.write(fMute);
+ wait_ms(250); // el-cheapo deboounce
+ }
else
{
bool isUp = !this->up.read();
@@ -283,11 +274,13 @@
if (isUp)
{
- this->ball.changeSpeed(true);
+ if(this->nGameTickDelay<1000) this->nGameTickDelay=(float)this->nGameTickDelay*1.20;
+ this->printf(100, 0, "Speed: %d ", this->nGameTickDelay);
}
else if (isDown)
{
- this->ball.changeSpeed(false);
+ if(this->nGameTickDelay>5) this->nGameTickDelay=(float)this->nGameTickDelay/1.20;
+ this->printf(100, 0, "Speed: %d ", this->nGameTickDelay);
}
end:
@@ -320,7 +313,8 @@
wait_ms(1);
}
-
+ wait_ms(250); // el-cheapo deboounce
+
//this->disp.clearScreen();
this->initialize(); // start a new game
}
@@ -329,7 +323,7 @@
void Game::checkBallsCollision()
{
- Rectangle rTop=Rectangle(0, -10, WIDTH, 0); // Rectangle(0, 0, WIDTH, 1); // top wall
+ Rectangle rTop=Rectangle(0, -10, WIDTH, this->nTopWall); // Rectangle(0, 0, WIDTH, 1); // top wall
Rectangle rBottom=Rectangle(0, HEIGHT, WIDTH, HEIGHT+10); // Rectangle(0, HEIGHT, WIDTH, HEIGHT); // bottom gap
Rectangle rLeft=Rectangle(-10, 0, 0, HEIGHT); // Rectangle(0, 0, 0, HEIGHT); // left wall
Rectangle rRight=Rectangle(WIDTH, 0, WIDTH+10, HEIGHT); // Rectangle(WIDTH, 0, WIDTH, HEIGHT); // right wall
@@ -366,7 +360,7 @@
if(pBall->collides(rPaddleLeft)) pBall->vSpeed.add(Vector(-1,0)); // left side of paddle has bias to the left
if(pBall->collides(rPaddleRight)) pBall->vSpeed.add(Vector(1,0)); // right side of paddle has bias to the right
-
+ // bounce the ball
// increase the speed of the ball when hitting the paddle to increase difficulty
//pBall->Bounce(Vector(1,-1)); // bounce vertical at same speed
float ftSpeedMax=3.0;
@@ -381,15 +375,29 @@
else
pBall->Bounce(Vector(1,-1)); // bounce vertical at same speed
+ // force drawing the paddle after redrawing the bounced ball
+ this->fDrawPaddle=true;
+
+ // make sound and update the score
this->snd.beepLong();
this->nScore++;
this->printf(100, 0, "Score: %d ", this->nScore);
+ // add a new ball every 10 points
if(this->nScore>0 && this->nScore%10==0)
{
this->newBall();
- this->nLives++;
+ this->nBalls++;
}
+
+
+ // lower the ceiling every 25 points
+ if(this->nScore>0 && this->nScore%25==0)
+ {
+ this->nTopWall+=2;
+ this->disp.fillRect(rTop.getX1(), 8, rTop.getX2(), rTop.getY2(), Color565::Purple);
+ }
+
}
if(pBall->collides(rBottom) && pBall->vSpeed.isDown()) // bottom gap
{
@@ -397,7 +405,7 @@
pBall->clear(); // clear the ball from its current position
pBall->vSpeed.set(0,0);
pBall->fActive=false;
- this->nLives--;
+ this->nBalls--;
//this->initializeBall(); // start a new ball
if(countBalls()==0)
{
@@ -415,55 +423,6 @@
this->paddle.checkBoundary(rScreen);
}
-/*
-void Game::checkCollision()
-{
- Rectangle rTop=Rectangle(0, -10, WIDTH, 0); // Rectangle(0, 0, WIDTH, 1); // top wall
- Rectangle rBottom=Rectangle(0, HEIGHT, WIDTH, HEIGHT+10); // Rectangle(0, HEIGHT, WIDTH, HEIGHT); // bottom gap
- Rectangle rLeft=Rectangle(-10, 0, 0, HEIGHT); // Rectangle(0, 0, 0, HEIGHT); // left wall
- Rectangle rRight=Rectangle(WIDTH, 0, WIDTH+10, HEIGHT); // Rectangle(WIDTH, 0, WIDTH, HEIGHT); // right wall
- Rectangle rPaddle=Rectangle(paddle.pos.getX(), paddle.pos.getY(), paddle.pos.getX() + Game::PADDLE_WIDTH, HEIGHT+10); // Rectangle(this->paddleX, HEIGHT - Game::PADDLE_HEIGHT, this->paddleX + Game::PADDLE_WIDTH, HEIGHT); // paddle
- Rectangle rPaddleLeft=Rectangle(paddle.pos.getX(), paddle.pos.getY(), paddle.pos.getX() + Game::PADDLE_WIDTH/3, HEIGHT+10); // paddle left part
- Rectangle rPaddleRight=Rectangle(paddle.pos.getX()+ Game::PADDLE_WIDTH/3 + Game::PADDLE_WIDTH/3, paddle.pos.getY(), paddle.pos.getX() + Game::PADDLE_WIDTH, HEIGHT+10); // paddle right part
- Rectangle rScreen=Rectangle(0,0, WIDTH, HEIGHT); // screen boundary
-
- this->paddle.checkBoundary(rScreen);
-
- if(ball.collides(rTop) && this->ball.vSpeed.isUp()) // top wall
- {
- this->ball.Bounce(Vector(1,-1)); // bounce vertical
- this->snd.beepShort();
- }
- if(ball.collides(rRight) && this->ball.vSpeed.isRight()) // right wall
- {
- this->ball.Bounce(Vector(-1,1)); // bounce horizontal
- this->snd.beepShort();
- }
- if(ball.collides(rLeft) && this->ball.vSpeed.isLeft()) // left wall
- {
- this->ball.Bounce(Vector(-1,1)); // bounce horizontal
- this->snd.beepShort();
- }
- if(ball.collides(rPaddle) && this->ball.vSpeed.isDown()) // paddle
- {
- if(ball.collides(rPaddleLeft)) ball.vSpeed.add(Vector(-1,0)); // left side of paddle has bias to the left
- if(ball.collides(rPaddleRight)) ball.vSpeed.add(Vector(1,0)); // right side of paddle has bias to the right
-
- ball.Bounce(Vector(1,-1)); // bounce vertical at same speed
- //ball.Bounce(Vector(1,-1.05)); // bounce from paddle at higher speed
-
- this->snd.beepLong();
- this->nScore++;
- this->printf(100, 0, "Score: %d ", this->nScore);
- }
- if(ball.collides(rBottom) && this->ball.vSpeed.isDown()) // bottom gap
- {
- ball.clearPrev(); // clear the ball from its previous position
- this->nLives--;
- this->initializeBall(); // start a new ball
- }
-}
-*/
void Game::printf(int x, int y, const char *szFormat, ...)
{
@@ -477,20 +436,26 @@
}
-void Game::checkLives() {
- if (this->nLives == 0) {
+void Game::checkBalls()
+{
+ if (this->nBalls == 0)
+ { // game over
+ char buf[256];
this->disp.clearScreen();
-
+
this->drawString(Game::LOSE_1, HEIGHT / 2 - CHAR_HEIGHT);
this->drawString(Game::LOSE_2, HEIGHT / 2);
+ sprintf(buf,"Your score: %d ", this->nScore);
+ this->drawString(buf, HEIGHT / 2 + CHAR_HEIGHT / 2 + CHAR_HEIGHT );
this->snd.playTune();
while (this->circle.read())
wait_ms(1);
-
+ wait_ms(250); // el-cheapo deboounce
this->initialize();
}
- else {
- this->printf(0, 0, "%d", this->nLives);
+ else
+ {
+ this->printf(0, 0, "Balls: %d ", this->nBalls);
}
}
\ No newline at end of file