void Board::slideLeft() {
for (int i = 0; i < 2; i++) {
Tile boardCopy[boardWidth][boardHeight];
std::copy(&board[0][0], &board[0][0] + boardWidth*boardHeight, &boardCopy[0][0]);
for (int x = 0; x < 4; x++) {
for (int y = 0; y < 4; y++) {
if (boardCopy[x][y].value == 0) {
for (int k = y+1; k < 4; k++) {
if (boardCopy[x][k].value != 0) {
boardCopy[x][y] = boardCopy[x][k];
boardCopy[x][y].xPos = x;
boardCopy[x][y].yPos = y;
boardCopy[x][k] = Tile(Tile::TileColor::EMPTY, x, k, 0);
break;
}
}
}
}
}
std::copy(&boardCopy[0][0], &boardCopy[0][0] + boardWidth*boardHeight, &board[0][0]);
if (i == 0) {
mergeLeft();
}
}
}
bool mergeMoveLeft(struct tile **board, int size, int pos_rel, int multi) {
//move so that no space between tiles
bool move = moveTileLeft(board, size, pos_rel);
//plus
bool plus = mergeLeft(board, size, pos_rel, multi);
//move again to make sure no space
moveTileLeft(board, size, pos_rel);
// Play sound when cannot move.
// if (!move && !plus){
// moving_sound(0);
// }
return move || plus;
}
/**
* Splits block b across constraint c into two new blocks, l and r (c's left
* and right sides respectively)
*/
void Blocks::split(Block *b, Block *&l, Block *&r, Constraint *c) {
b->split(l, r, c);
#ifdef RECTANGLE_OVERLAP_LOGGING
ofstream f(LOGFILE, ios::app);
f << "Split left: " << *l << endl;
f << "Split right: " << *r << endl;
#endif
r->posn = b->posn;
r->wposn = r->posn * r->weight;
mergeLeft(l);
// r may have been merged!
r = c->right->block;
r->wposn = r->desiredWeightedPosition();
r->posn = r->wposn / r->weight;
mergeRight(r);
removeBlock(b);
insert(l);
insert(r);
}
int main(void) {
int addScore, position, pauseSel;
// Initializations
PLL_Init(); // Clock set at 80 MHz
LCD_Init();
Board_Init();
Input_Init();
DAC_Init();
Random_Init(NVIC_ST_CURRENT_R);
Timer2_Init(80000000); // time interrupt
Timer1_Init(2000); // sound interrupt
EnableInterrupts();
generateRandomTile();
drawAllTiles();
writeScore(0);
writeHighscore(0);
writeTime(0);
displayHighestTile();
while(1) {
// draw arrow if ready
if (arrowReady == 1) {
// acknowledge flag
arrowReady = 0;
// draw arrow
drawArrow();
}
// write time if ready
if (timeReady == 1) {
// acknowledge flag
timeReady = 0;
// write time
writeTime(elapsedTime);
}
// Play mode and button1 is pushed
if(Button1 && !pauseMode && !gameOver) {
// Play sound
playSound = 1;
// shift and merge tiles towards arrow
position = getSliderPosition();
if (position == 1) {
shiftLeft();
addScore = mergeLeft();
shiftLeft();
}
else if (position == 2) {
shiftUp();
addScore = mergeUp();
shiftUp();
}
else if (position == 3) {
shiftRight();
addScore = mergeRight();
shiftRight();
}
else {
shiftDown();
addScore = mergeDown();
shiftDown();
}
eraseBoard();
drawAllTiles();
// update score
score += addScore;
addScore = 0;
writeScore(score);
displayHighestTile();
// delay before adding new tile
delay(200);
// create new tile
if (countEmptyTiles() != 0) {
generateRandomTile();
}
drawAllTiles();
// update highest tile image
displayHighestTile();
// check if game over
if (checkGameOver() == 1) {
gameOver = 1;
}
// unset flag
Button1 = 0;
}
// button 2 is pause
else if (Button2 && !gameOver && !pauseMode) {
pauseMode = 1;
pauseSel = 0;
// disable arrow and timer
NVIC_ST_CTRL_R = 0;
TIMER2_CTL_R = 0x00000000;
LCD_DrawFilledRect(prevX,prevY,20,20,BLACK);
// draw pause mode screen
drawPauseMode();
// acknowledge button
Button2 = 0;
// wait until button is pushed
while (pauseMode) {
// Button 1 selects current pause selection button
if (Button1) {
// acknowledge button
Button1 = 0;
Button2 = 0;
pauseMode = 0;
// if pause selection = "continue" (pauseSel = 0), continue with game
if (pauseSel == 0) {
// redraw screen
eraseBoard();
drawAllTiles();
// enable gameplay
NVIC_ST_CTRL_R = 0x07;
TIMER2_CTL_R = 0x00000001;
}
// if pause selection = "restart" (pauseSel = 0), end game
else if (pauseSel == 1) {
if (score > highscore) {
writeHighscore(score);
}
score = 0;
eraseScore();
writeScore(0);
clearBoard();
eraseBoard();
pauseMode = 0;
generateRandomTile();
drawAllTiles();
elapsedTime = 0;
eraseTime();
writeTime(0);
displayHighestTile();
NVIC_ST_CTRL_R = 0x07;
TIMER2_CTL_R = 0x00000001;
}
}
// Button 2 changes pause selection
else if (Button2) {
Button2 = 0;
if (pauseSel == 0) {
pauseSel = 1;
LCD_DrawRect(144,112,58,16,BLACK);
LCD_DrawRect(222,112,51,16,WHITE);
}
else if (pauseSel == 1) {
pauseSel = 0;
LCD_DrawRect(222,112,51,16,BLACK);
LCD_DrawRect(144,112,58,16,WHITE);
}
}
}
}
// game over
if (gameOver == 1) {
NVIC_ST_CTRL_R = 0;
TIMER2_CTL_R = 0x00000000;
LCD_DrawFilledRect(156,38,100,20,BLACK);
LCD_SetTextColor(255,255,240);
LCD_Goto(30,5);
printf("GAME OVER");
while (Button1 == 0 && Button2 == 0) {}
Button1 = 0;
Button2 = 0;
LCD_DrawFilledRect(prevX,prevY,20,20,BLACK);
drawGameOver(score, elapsedTime);
if (score > highscore) {
writeHighscore(score);
gameOverHighscore(score);
}
// wait til button is pushed
while (Button1 == 0 && Button2 == 0) {}
// acknowledge buttons
Button1 = 0;
Button2 = 0;
// start new game
score = 0;
eraseScore();
writeScore(0);
clearBoard();
eraseBoard();
pauseMode = 0;
generateRandomTile();
drawAllTiles();
elapsedTime = 0;
eraseTime();
writeTime(0);
displayHighestTile();
NVIC_ST_CTRL_R = 0x07;
TIMER2_CTL_R = 0x00000001;
// finish game over mode
gameOver = 0;
}
}
}