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#include "drawing.h"
#include "sprites.h"
#define LEFT_PIN 2
#define RIGHT_PIN 4
#define DROP_PIN 11
#define ROTATE_PIN 10
#define CLICK_TIME 200
#define FALL_TIME 300
#define DEBUG_TO_SERIAL 1
#define RENDER_TO_SERIAL 0
void setup() {
#if DEBUG_TO_SERIAL == 1 or RENDER_TO_SERIAL == 1
Serial.begin(115200);
Serial.println("Starting \n\n");
#endif
/* Prepare the random generator */
randomSeed( analogRead(0) );
/* Init pins */
pinMode(CS, OUTPUT);
pinMode(CLK, OUTPUT);
pinMode(DATA_IN, OUTPUT);
pinMode(LEFT_PIN, INPUT_PULLUP);
pinMode(RIGHT_PIN, INPUT_PULLUP);
pinMode(DROP_PIN, INPUT_PULLUP);
pinMode(ROTATE_PIN, INPUT_PULLUP);
initDisplays(0);
initDisplays(1);
initSprites();
initGame();
}
void loop() {
gameLoop();
}
/*
* GAME LOGIC
*/
struct Sprite *cur_block;
int x_pos, y_pos, score;
void initGame() {
initBlock();
}
void gameLoop() {
static long loop_time;
handleButtons();
if( millis() - loop_time < FALL_TIME)
return;
/* Move the cur_block */
if( checkCollision(0, 1) ){
drawSprite(buttonLayer, x_pos, y_pos, cur_block);
/* Debug information */
#if DEBUG_TO_SERIAL == 1
Serial.print("Writing block to ");
Serial.print(x_pos);
Serial.print(", ");
Serial.println(y_pos);
#endif
/* Handle the rows, from the button */
handleFullRows(0);
/* If full end the game */
if( initBlock() )
endGame();
renderAll();
}else {
/* Free to move (one down)*/
moveBlock(0, 1);
}
loop_time = millis();
}
/* Makes a new block and returns 1 if full */
int initBlock() {
cur_block = blocks[ random(7) ];
y_pos = 0;
x_pos = 4 - cur_block->width/2;
return checkCollision(0, 0);
}
void moveBlock(int x_move, int y_move) {
x_pos += x_move;
y_pos += y_move;
/* Redraw ball */
clearBuffer(topLayer);
drawSprite(topLayer, x_pos, y_pos, cur_block);
renderAll();
}
/* Returns 1 if there is collision in specified direction */
int checkCollision(int xMove, int yMove) {
/* New position */
int xNew = x_pos + xMove;
int yNew = y_pos + yMove;
for( int i = 0; i < cur_block->height; i++ ) {
if( (cur_block->buff[i] >> xNew) & buttonLayer[i + yNew] )
return 1;
}
/* Check if border is hit */
if( xNew + cur_block->width > 8 || xNew < 0 || yNew + cur_block->height > 16 || yNew < 0 )
return 1;
return 0;
}
int rotateBlock() {
/* Switch to next cur_block if it exists */
if( cur_block->rotateNext ) {
cur_block = cur_block->rotateNext;
}
/* Render new cur_block(by abusing move block) */
moveBlock(0, 0);
}
void dropBlock() {
/* Move down until it hits something */
while( !checkCollision(0, 1) ) {
moveBlock(0, 1);
/* Add delay to make falling effect */
delay(5);
}
}
/* Check and delete full rows(starting at `start`) */
void handleFullRows(int start) {
int i = start;
while(i < 16) {
/* If row is full */
if( buttonLayer[15 - i] == 0xFF) {
/* Drop all layers ontop */
for( int j = i; j < 16; j++ ){
buttonLayer[15 - j] = buttonLayer[14 - j];
}
/* Increase score */
score++;
} else {
i++;
}
}
}
void endGame() {
/* Slowly clear screen */
for( int i = 0; i < 16; i++ ) {
buttonLayer[15 - i] = topLayer[15 - i] = 0;
renderAll();
delay(100);
}
/* Fill button of screen with score */
int xFill = score % 8;
int yFill = score / 8;
int y = 0;
#if DEBUG_TO_SERIAL == 1
Serial.print("Finished with score ");
Serial.println(score);
#endif
for( y = 0; y < yFill; y++ ){
buttonLayer[15 - y] = 0xFF;
}
for( int x = 0; x < xFill; x++ ){
buttonLayer[15 - y] = buttonLayer[15 - y] | ( 1 << x );
}
/* Replicate the DVD gliding logo thing */
cur_block = &smiley;
/* Velocity */
int xV = 1, yV = 1;
y_pos = 3;
while(1){
if( checkCollision(xV, 0) ) {
xV *= -1;
}
if( checkCollision(0, yV) ) {
yV *= -1;
}
moveBlock(xV, yV);
delay(100);
}
}
/* Draw first 8 bytes on first desplay and second 8 on last */
void renderAll() {
#if RENDER_TO_SERIAL == 1
renderToSerial();
#endif
render(0, 0);
render(1, 8);
}
/*
* Input Handling
*/
unsigned long leftLast, rightLast, dropLast, rotateLast;
void handleButtons() {
/* Read from switches */
int leftState = !digitalRead(LEFT_PIN);
int rightState = !digitalRead(RIGHT_PIN);
int dropState = !digitalRead(DROP_PIN);
int rotateState = !digitalRead(ROTATE_PIN);
/* Check if last click is over 100 ms */
if( leftState && millis() - leftLast > CLICK_TIME ) {
leftLast = millis();
/* Move left */
if( !checkCollision(1, 0) )
moveBlock(1, 0);
}
/* Repeat for others buttons */
if( rightState && millis() - rightLast > CLICK_TIME ) {
rightLast = millis();
if( !checkCollision(-1, 0) )
moveBlock(-1, 0);
}
if( dropState && millis() - dropLast > CLICK_TIME + 100 ){
dropLast = millis();
dropBlock();
}
if( rotateState && millis() - rotateLast > CLICK_TIME + 100 ){
rotateLast = millis();
rotateBlock();
}
}
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