Calibrating and Coding Your Arduino Touchscreen

2nd December 2020

Adding Bluetooth to Your Arduino Projects

30th January 2021

Published by Bob at 3rd January 2021

Coding Games on an ILI9341 SPI LCD Touchscreen with Arduino

Breakout Code

Download the Breakout Sketch

#include "SPI.h"
#include "Adafruit_GFX.h"
#include "Adafruit_ILI9341.h"
#include "XPT2046_Touchscreen.h"
#include "Math.h"

// function declarations
boolean checkCollision(int x1, int y1, int width1, int height1, int x2, int y2, int width2, int height2);

// For the Adafruit shield, these are the default.
#define TFT_CS 10
#define TFT_DC 9
#define TFT_MOSI 11
#define TFT_CLK 13
#define TFT_RST 8
#define TFT_MISO 12

#define TS_CS 7

#define ROTATION 3


// Use hardware SPI (on Uno, #13, #12, #11) and the above for CS/DC/RST
Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC, TFT_RST);
XPT2046_Touchscreen ts(TS_CS);

float xCalM = 0.0, yCalM = 0.0;
float xCalC = 0.0, yCalC = 0.0;
float xPos = 0.0, yPos = 0.0;
float xPosLast = 0.0, yPosLast = 0.0;
float xVel = 0.0, yVel = 0.0;
int8_t topBorder = 20;
int8_t batWidth = 30;
int8_t batHeight = 7;
int16_t batX = 0, batY = 0;
int8_t ballSize = 3;
int playerLives = 3;
int playerScore = 0;
int gameState = 1; // 1=start 2=playing 3=gameover
int level;

int16_t tftWidth = 0, tftHeight = 0;

class ScreenPoint {
public:
int16_t x;
int16_t y;

ScreenPoint(){
// default contructor
}

ScreenPoint(int16_t xIn, int16_t yIn){
x = xIn;
y = yIn;
}
};

class Block {
public:
int x;
int y;
int width;
int height;
int colour;
int score;
boolean isActive;

// default constructor
Block(){}

Block(int xpos, int ypos, int bwidth, int bheight, int bcol, int bscore){
x = xpos;
y = ypos;
width = bwidth;
height = bheight;
colour = bcol;
score = bscore;
isActive = true;
drawBlock();
}

void drawBlock(){
tft.fillRect(x,y,width,height,colour);
}

void removeBlock(){
tft.fillRect(x,y,width,height,ILI9341_BLACK);
isActive = false;
}

boolean isHit(float x1,float y1, int w1,int h1){
if (checkCollision((int)round(x1),(int)round(y1),w1,h1,x,y,width,height)){
return true;
}
else {
return false;
}
}
};
Block blocks[5][16];

ScreenPoint getScreenCoords(int16_t x, int16_t y){
int16_t xCoord = round((x * xCalM) + xCalC);
int16_t yCoord = round((y * yCalM) + yCalC);
if(xCoord &lt; 0) xCoord = 0;
if(xCoord &gt;= tftWidth) xCoord = tftWidth - 1;
if(yCoord &lt; 0) yCoord = 0;
if(yCoord &gt;= tftHeight) yCoord = tftHeight - 1;
return(ScreenPoint(xCoord, yCoord));
}

void calibrateTouchScreen(){
TS_Point p;
int16_t x1,y1,x2,y2;

tft.fillScreen(ILI9341_BLACK);
// wait for no touch
while(ts.touched());
tft.drawFastHLine(10,20,20,ILI9341_RED);
tft.drawFastVLine(20,10,20,ILI9341_RED);
while(!ts.touched());
p = ts.getPoint();
x1 = p.x;
y1 = p.y;
tft.drawFastHLine(10,20,20,ILI9341_BLACK);
tft.drawFastVLine(20,10,20,ILI9341_BLACK);
delay(500);
while(ts.touched());
tft.drawFastHLine(tftWidth - 30,tftHeight - 20,20,ILI9341_RED);
tft.drawFastVLine(tftWidth - 20,tftHeight - 30,20,ILI9341_RED);
while(!ts.touched());
p = ts.getPoint();
x2 = p.x;
y2 = p.y;
tft.drawFastHLine(tftWidth - 30,tftHeight - 20,20,ILI9341_BLACK);
tft.drawFastVLine(tftWidth - 20,tftHeight - 30,20,ILI9341_BLACK);

int16_t xDist = tftWidth - 40;
int16_t yDist = tftHeight - 40;

// translate in form pos = m x val + c
// x
xCalM = (float)xDist / (float)(x2 - x1);
xCalC = 20.0 - ((float)x1 * xCalM);
// y
yCalM = (float)yDist / (float)(y2 - y1);
yCalC = 20.0 - ((float)y1 * yCalM);

Serial.print("x1 = ");Serial.print(x1);
Serial.print(", y1 = ");Serial.print(y1);
Serial.print("x2 = ");Serial.print(x2);
Serial.print(", y2 = ");Serial.println(y2);
Serial.print("xCalM = ");Serial.print(xCalM);
Serial.print(", xCalC = ");Serial.print(xCalC);
Serial.print("yCalM = ");Serial.print(yCalM);
Serial.print(", yCalC = ");Serial.println(yCalC);

}


void setup() {
Serial.begin(9600);

// avoid chip select contention
pinMode(TS_CS, OUTPUT);
digitalWrite(TS_CS, HIGH);
pinMode(TFT_CS, OUTPUT);
digitalWrite(TFT_CS, HIGH);

tft.begin();
tft.setRotation(ROTATION);
tft.fillScreen(ILI9341_BLACK);
tftWidth = tft.width();
tftHeight = tft.height();
ts.begin();
ts.setRotation(ROTATION);
calibrateTouchScreen();

batY = tftHeight - batHeight -30;
}

void initGame(){

tft.fillScreen(ILI9341_BLACK);
tft.drawFastHLine(0, topBorder-1, tftWidth, ILI9341_BLUE);
tft.setCursor(0,5);
tft.setTextSize(1);
tft.setTextColor(ILI9341_WHITE);
tft.print("SCORE :");
tft.setCursor((tftWidth/2), 5);
tft.print("LIVES :");
tft.setCursor(tftWidth - 75, 5);
tft.print("LEVEL :");

batY = tftHeight - batHeight -30;
playerLives = 3;
playerScore = 0;
level = 0;

drawLives();
drawScore();
drawLevel();

initGameBoard();

}

void initGameBoard() {
int row, col;
int colour, score;
clearOldBallPos();
xPosLast = xPos = 0;
yPosLast = yPos = 90;
xVel = 2;
yVel = 2 + (level);
gameState = 2;

for(row=0; row &lt; 5; row++){
for (col=0; col &lt; 16; col++){
switch(row){
case 0:
case 1:
colour = ILI9341_BLUE;
score = 50;
break;
case 2:
case 3:
colour = ILI9341_MAGENTA;
score = 30;
break;
case 4:
case 5:
colour = ILI9341_YELLOW;
score = 10;
break;
}
blocks[row][col] = Block(col*20, (row*10) + 30, 19, 9,colour,score);
}
}

}

void clearOldBallPos(){
tft.fillCircle(round(xPosLast), round(yPosLast), ballSize, ILI9341_BLACK);
}

void moveBall(){
float newX, newY;
newX = xPos + xVel;
newY = yPos + yVel;
if (newX &lt; (float)ballSize){
newX = (float)ballSize;
xVel = -xVel;
}
if (newX &gt; (float)(tftWidth - ballSize - 1)){
newX = (float)(tftWidth - ballSize - 1);
xVel = -xVel;
}
if (newY &lt; topBorder + (float)ballSize){
newY = topBorder + (float)ballSize;
yVel = -yVel;
}
if ((round(newX) != round(xPosLast)) || (round(newY) != round(yPosLast))){
// draw ball
clearOldBallPos();
tft.fillCircle(round(newX), round(newY), ballSize, ILI9341_GREEN);
xPosLast = newX;
yPosLast = newY;
}
xPos = newX;
yPos = newY;
}

void drawScore(){
// clear old score
tft.fillRect(50,5,25,10,ILI9341_BLACK);
// print new score
tft.setCursor(50,5);
tft.setTextSize(1);
tft.setTextColor(ILI9341_WHITE);
tft.print(playerScore);
}

void drawLives(){
// clear old lives
tft.fillRect((tftWidth/2)+50,5,25,10,ILI9341_BLACK);
// print new score
tft.setCursor((tftWidth/2)+50,5);
tft.setTextSize(1);
tft.setTextColor(ILI9341_WHITE);
tft.print(playerLives);
}

void drawLevel(){
// clear old level
tft.fillRect(tftWidth-25,5,25,10,ILI9341_BLACK);
// print new score
tft.setCursor(tftWidth-25,5);
tft.setTextSize(1);
tft.setTextColor(ILI9341_WHITE);
tft.print(level + 1);
}

void newBall(){
xPos = 0;
yPos = 90;
xVel = yVel = 2;
moveBall();
delay(1000);
}

boolean checkBallLost(){
if (yPos &gt; tftHeight + ballSize){
return true;
}
else {
return false;
}
}

void moveBat(){
int16_t newBatX;
ScreenPoint sp = ScreenPoint(0,0);
if (ts.touched()) {
TS_Point p = ts.getPoint();
sp = getScreenCoords(p.x, p.y);
newBatX = sp.x - (batWidth / 2);
if (newBatX &lt; 0) newBatX = 0;
if (newBatX &gt;= (tftWidth - batWidth)) newBatX = tftWidth - 1 - batWidth;
}
if (abs(newBatX - batX) &gt; 4){
tft.fillRect(batX, batY, batWidth, batHeight,ILI9341_BLACK);
batX = newBatX;
tft.fillRect(batX, batY, batWidth, batHeight,ILI9341_RED);
}
}

// bounding box collision detection
boolean checkCollision(int x1, int y1, int width1, int height1, int x2, int y2, int width2, int height2){
boolean hit = false;
if (
(((x2 + width2) &gt;= x1) &amp;&amp; (x2 &lt;= (x1 + width1)))
&amp;&amp; (((y2 + height2) &gt;= y1) &amp;&amp; (y2 &lt;= (y1 + height1)))
) {
hit = true;
}

return hit;
}

void checkHitBat(){
// check bat and bottom half of ball
float xInc;
boolean hit = checkCollision(batX, batY, batWidth, batHeight, (int)round(xPos)-ballSize, (int)round(yPos), ballSize*2, ballSize);
if (hit) {
// reverse ball y direction but increase speed
yVel += 0.05;
if (yVel &gt; 5){
yVel = 5;
}
yVel = -yVel;
// rounded bounce
xInc = (xPos - (float)(batX + (batWidth / 2))) / (float)batWidth;
xVel += 6 * xInc;
if (abs(xVel) &gt; 6){
if (xVel &lt; 0) {
xVel = -6;
}
else {
xVel = 6;
}
}
// make sure ball not hitting bat
yPos = (float)(batY - ballSize -1);
}
}

void checkHitBlock(){
int row, col;
for (row=0; row&lt;5; row++){
for (col=0; col&lt;16; col++){
if (blocks[row][col].isActive &amp;&amp; blocks[row][col].isHit(xPos,yPos, ballSize*2,ballSize*2)){
blocks[row][col].removeBlock();
playerScore += blocks[row][col].score;
drawScore();
yVel = -yVel;
return;
}
}
}
}

boolean checkAllBlocksHit(){
int row, col, actives;
actives = 0;
for (row=0; row&lt;5; row++){
for (col=0; col&lt;16; col++){
if (blocks[row][col].isActive){
return false;
}
}
}

return true; 
}

unsigned long lastFrame = millis();

void loop(void) {

// limit frame rate
while((millis() - lastFrame) &lt; 20);
lastFrame = millis();

switch(gameState){
case 1: // start
gameState = 11;
break;

case 11: // click to play
tft.fillRect((tftWidth/2)-100,(tftHeight/2)-20,200,40,ILI9341_GREEN);
tft.setCursor((tftWidth/2)-100+25,(tftHeight/2)-20+12);
tft.setTextSize(2);
tft.setTextColor(ILI9341_WHITE);
tft.print("CLICK TO PLAY");
gameState = 12;
break;

case 12: // wait for click to play
if (ts.touched()) {
TS_Point p = ts.getPoint();
ScreenPoint sp = getScreenCoords(p.x, p.y);
if (checkCollision(sp.x, sp.y,1,1,(tftWidth/2)-50,(tftHeight/2)-20,100,40)){
initGame();
gameState = 2;
}
}
break;

case 2: // play

moveBall();
moveBat();
checkHitBat();
checkHitBlock();
if (checkBallLost()){
playerLives --;
drawLives();
if (playerLives &gt; 0){
newBall();
}
else {
gameState = 3; // end game
}
}

if (checkAllBlocksHit()){
gameState = 4;
}

break;

case 4: // new blocks
delay(1000);
level ++;
drawLevel();
initGameBoard();
break;

case 3: // end
tft.fillScreen(ILI9341_BLACK);
tft.setCursor((tftWidth/2)-150,50);
tft.setTextSize(3);
tft.setTextColor(ILI9341_WHITE);
tft.print("You Scored ");
tft.print(playerScore);
gameState = 11; // click to play
break;
}




}

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#include "SPI.h"

#include "Adafruit_GFX.h"

#include "Adafruit_ILI9341.h"

#include "XPT2046_Touchscreen.h"

#include "Math.h"

// function declarations

boolean checkCollision(int x1, int y1, int width1, int height1, int x2, int y2, int width2, int height2);

// For the Adafruit shield, these are the default.

#define TFT_CS 10

#define TFT_DC 9

#define TFT_MOSI 11

#define TFT_CLK 13

#define TFT_RST 8

#define TFT_MISO 12

#define TS_CS 7

#define ROTATION 3

// Use hardware SPI (on Uno, #13, #12, #11) and the above for CS/DC/RST

Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC, TFT_RST);

XPT2046_Touchscreen ts(TS_CS);

float xCalM = 0.0, yCalM = 0.0;

float xCalC = 0.0, yCalC = 0.0;

float xPos = 0.0, yPos = 0.0;

float xPosLast = 0.0, yPosLast = 0.0;

float xVel = 0.0, yVel = 0.0;

int8_t topBorder = 20;

int8_t batWidth = 30;

int8_t batHeight = 7;

int16_t batX = 0, batY = 0;

int8_t ballSize = 3;

int playerLives = 3;

int playerScore = 0;

int gameState = 1; // 1=start 2=playing 3=gameover

int level;

int16_t tftWidth = 0, tftHeight = 0;

class ScreenPoint {

public:

int16_t x;

int16_t y;

ScreenPoint(){

// default contructor

}

ScreenPoint(int16_t xIn, int16_t yIn){

x = xIn;

y = yIn;

}

};

class Block {

public:

int x;

int y;

int width;

int height;

int colour;

int score;

boolean isActive;

// default constructor

Block(){}

Block(int xpos, int ypos, int bwidth, int bheight, int bcol, int bscore){

x = xpos;

y = ypos;

width = bwidth;

height = bheight;

colour = bcol;

score = bscore;

isActive = true;

drawBlock();

}

void drawBlock(){

tft.fillRect(x,y,width,height,colour);

}

void removeBlock(){

tft.fillRect(x,y,width,height,ILI9341_BLACK);

isActive = false;

}

boolean isHit(float x1,float y1, int w1,int h1){

if (checkCollision((int)round(x1),(int)round(y1),w1,h1,x,y,width,height)){

return true;

}

else {

return false;

}

};

Block blocks[5][16];

ScreenPoint getScreenCoords(int16_t x, int16_t y){

int16_t xCoord = round((x * xCalM) + xCalC);

int16_t yCoord = round((y * yCalM) + yCalC);

if(xCoord < 0) xCoord = 0;

if(xCoord >= tftWidth) xCoord = tftWidth - 1;

if(yCoord < 0) yCoord = 0;

if(yCoord >= tftHeight) yCoord = tftHeight - 1;

return(ScreenPoint(xCoord, yCoord));

}

void calibrateTouchScreen(){

TS_Point p;

int16_t x1,y1,x2,y2;

tft.fillScreen(ILI9341_BLACK);

// wait for no touch

while(ts.touched());

tft.drawFastHLine(10,20,20,ILI9341_RED);

tft.drawFastVLine(20,10,20,ILI9341_RED);

while(!ts.touched());

p = ts.getPoint();

x1 = p.x;

y1 = p.y;

tft.drawFastHLine(10,20,20,ILI9341_BLACK);

tft.drawFastVLine(20,10,20,ILI9341_BLACK);

delay(500);

while(ts.touched());

tft.drawFastHLine(tftWidth - 30,tftHeight - 20,20,ILI9341_RED);

tft.drawFastVLine(tftWidth - 20,tftHeight - 30,20,ILI9341_RED);

while(!ts.touched());

p = ts.getPoint();

x2 = p.x;

y2 = p.y;

tft.drawFastHLine(tftWidth - 30,tftHeight - 20,20,ILI9341_BLACK);

tft.drawFastVLine(tftWidth - 20,tftHeight - 30,20,ILI9341_BLACK);

int16_t xDist = tftWidth - 40;

int16_t yDist = tftHeight - 40;

// translate in form pos = m x val + c

// x

xCalM = (float)xDist / (float)(x2 - x1);

xCalC = 20.0 - ((float)x1 * xCalM);

// y

yCalM = (float)yDist / (float)(y2 - y1);

yCalC = 20.0 - ((float)y1 * yCalM);

Serial.print("x1 = ");Serial.print(x1);

Serial.print(", y1 = ");Serial.print(y1);

Serial.print("x2 = ");Serial.print(x2);

Serial.print(", y2 = ");Serial.println(y2);

Serial.print("xCalM = ");Serial.print(xCalM);

Serial.print(", xCalC = ");Serial.print(xCalC);

Serial.print("yCalM = ");Serial.print(yCalM);

Serial.print(", yCalC = ");Serial.println(yCalC);

}

void setup() {

Serial.begin(9600);

// avoid chip select contention

pinMode(TS_CS, OUTPUT);

digitalWrite(TS_CS, HIGH);

pinMode(TFT_CS, OUTPUT);

digitalWrite(TFT_CS, HIGH);

tft.begin();

tft.setRotation(ROTATION);

tft.fillScreen(ILI9341_BLACK);

tftWidth = tft.width();

tftHeight = tft.height();

ts.begin();

ts.setRotation(ROTATION);

calibrateTouchScreen();

batY = tftHeight - batHeight -30;

}

void initGame(){

tft.fillScreen(ILI9341_BLACK);

tft.drawFastHLine(0, topBorder-1, tftWidth, ILI9341_BLUE);

tft.setCursor(0,5);

tft.setTextSize(1);

tft.setTextColor(ILI9341_WHITE);

tft.print("SCORE :");

tft.setCursor((tftWidth/2), 5);

tft.print("LIVES :");

tft.setCursor(tftWidth - 75, 5);

tft.print("LEVEL :");

batY = tftHeight - batHeight -30;

playerLives = 3;

playerScore = 0;

level = 0;

drawLives();

drawScore();

drawLevel();

initGameBoard();

}

void initGameBoard() {

int row, col;

int colour, score;

clearOldBallPos();

xPosLast = xPos = 0;

yPosLast = yPos = 90;

xVel = 2;

yVel = 2 + (level);

gameState = 2;

for(row=0; row < 5; row++){

for (col=0; col < 16; col++){

switch(row){

case 0:

case 1:

colour = ILI9341_BLUE;

score = 50;

break;

case 2:

case 3:

colour = ILI9341_MAGENTA;

score = 30;

break;

case 4:

case 5:

colour = ILI9341_YELLOW;

score = 10;

break;

}

blocks[row][col] = Block(col*20, (row*10) + 30, 19, 9,colour,score);

}

void clearOldBallPos(){

tft.fillCircle(round(xPosLast), round(yPosLast), ballSize, ILI9341_BLACK);

}

void moveBall(){

float newX, newY;

newX = xPos + xVel;

newY = yPos + yVel;

if (newX < (float)ballSize){

newX = (float)ballSize;

xVel = -xVel;

}

if (newX > (float)(tftWidth - ballSize - 1)){

newX = (float)(tftWidth - ballSize - 1);

xVel = -xVel;

}

if (newY < topBorder + (float)ballSize){

newY = topBorder + (float)ballSize;

yVel = -yVel;

}

if ((round(newX) != round(xPosLast)) || (round(newY) != round(yPosLast))){

// draw ball

clearOldBallPos();

tft.fillCircle(round(newX), round(newY), ballSize, ILI9341_GREEN);

xPosLast = newX;

yPosLast = newY;

}

xPos = newX;

yPos = newY;

}

void drawScore(){

// clear old score

tft.fillRect(50,5,25,10,ILI9341_BLACK);

// print new score

tft.setCursor(50,5);

tft.setTextSize(1);

tft.setTextColor(ILI9341_WHITE);

tft.print(playerScore);

}

void drawLives(){

// clear old lives

tft.fillRect((tftWidth/2)+50,5,25,10,ILI9341_BLACK);

// print new score

tft.setCursor((tftWidth/2)+50,5);

tft.setTextSize(1);

tft.setTextColor(ILI9341_WHITE);

tft.print(playerLives);

}

void drawLevel(){

// clear old level

tft.fillRect(tftWidth-25,5,25,10,ILI9341_BLACK);

// print new score

tft.setCursor(tftWidth-25,5);

tft.setTextSize(1);

tft.setTextColor(ILI9341_WHITE);

tft.print(level + 1);

}

void newBall(){

xPos = 0;

yPos = 90;

xVel = yVel = 2;

moveBall();

delay(1000);

}

boolean checkBallLost(){

if (yPos > tftHeight + ballSize){

return true;

}

else {

return false;

}

void moveBat(){

int16_t newBatX;

ScreenPoint sp = ScreenPoint(0,0);

if (ts.touched()) {

TS_Point p = ts.getPoint();

sp = getScreenCoords(p.x, p.y);

newBatX = sp.x - (batWidth / 2);

if (newBatX < 0) newBatX = 0;

if (newBatX >= (tftWidth - batWidth)) newBatX = tftWidth - 1 - batWidth;

}

if (abs(newBatX - batX) > 4){

tft.fillRect(batX, batY, batWidth, batHeight,ILI9341_BLACK);

batX = newBatX;

tft.fillRect(batX, batY, batWidth, batHeight,ILI9341_RED);

}

// bounding box collision detection

boolean checkCollision(int x1, int y1, int width1, int height1, int x2, int y2, int width2, int height2){

boolean hit = false;

if (

(((x2 + width2) >= x1) && (x2 <= (x1 + width1)))

&& (((y2 + height2) >= y1) && (y2 <= (y1 + height1)))

) {

hit = true;

}

return hit;

}

void checkHitBat(){

// check bat and bottom half of ball

float xInc;

boolean hit = checkCollision(batX, batY, batWidth, batHeight, (int)round(xPos)-ballSize, (int)round(yPos), ballSize*2, ballSize);

if (hit) {

// reverse ball y direction but increase speed

yVel += 0.05;

if (yVel > 5){

yVel = 5;

}

yVel = -yVel;

// rounded bounce

xInc = (xPos - (float)(batX + (batWidth / 2))) / (float)batWidth;

xVel += 6 * xInc;

if (abs(xVel) > 6){

if (xVel < 0) {

xVel = -6;

}

else {

xVel = 6;

}

// make sure ball not hitting bat

yPos = (float)(batY - ballSize -1);

}

void checkHitBlock(){

int row, col;

for (row=0; row<5; row++){

for (col=0; col<16; col++){

if (blocks[row][col].isActive && blocks[row][col].isHit(xPos,yPos, ballSize*2,ballSize*2)){

blocks[row][col].removeBlock();

playerScore += blocks[row][col].score;

drawScore();

yVel = -yVel;

return;

}

boolean checkAllBlocksHit(){

int row, col, actives;

actives = 0;

for (row=0; row<5; row++){

for (col=0; col<16; col++){

if (blocks[row][col].isActive){

return false;

}

return true;

}

unsigned long lastFrame = millis();

void loop(void) {

// limit frame rate

while((millis() - lastFrame) < 20);

lastFrame = millis();

switch(gameState){

case 1: // start

gameState = 11;

break;

case 11: // click to play

tft.fillRect((tftWidth/2)-100,(tftHeight/2)-20,200,40,ILI9341_GREEN);

tft.setCursor((tftWidth/2)-100+25,(tftHeight/2)-20+12);

tft.setTextSize(2);

tft.setTextColor(ILI9341_WHITE);

tft.print("CLICK TO PLAY");

gameState = 12;

break;

case 12: // wait for click to play

if (ts.touched()) {

TS_Point p = ts.getPoint();

ScreenPoint sp = getScreenCoords(p.x, p.y);

if (checkCollision(sp.x, sp.y,1,1,(tftWidth/2)-50,(tftHeight/2)-20,100,40)){

initGame();

gameState = 2;

}

break;

case 2: // play

moveBall();

moveBat();

checkHitBat();

checkHitBlock();

if (checkBallLost()){

playerLives --;

drawLives();

if (playerLives > 0){

newBall();

}

else {

gameState = 3; // end game

}

if (checkAllBlocksHit()){

gameState = 4;

}

break;

case 4: // new blocks

delay(1000);

level ++;

drawLevel();

initGameBoard();

break;

case 3: // end

tft.fillScreen(ILI9341_BLACK);

tft.setCursor((tftWidth/2)-150,50);

tft.setTextSize(3);

tft.setTextColor(ILI9341_WHITE);

tft.print("You Scored ");

tft.print(playerScore);

gameState = 11; // click to play

break;

}

Calibrating and Coding Your Arduino Touchscreen

Adding Bluetooth to Your Arduino Projects

Coding Games on an ILI9341 SPI LCD Touchscreen with Arduino

Breakout Code

Links

Bob

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