Dinosaur Game with a Pushbutton
LCD Screen
Arduino
Vcc
5V
GND
GND
SDA
A4
SCL
A5
*Note: You will need to install the “LiquidCrystal_I2C” by choosing “Sketch” -> “Include Libraries” -> “Manage Libraries” Then search for “LiquidCrystal_I2C” and look for the library by Marco Schwartz and select install.
**Also notice, your I2C device has a specific address associated with it. If yours is labelled 0x27, you are fine. If yours is labelled 0x3F, you need to change the 0x27 in “LiquidCrystal_I2C lcd(0x27,16,2);” to 0x3F.
#include <LiquidCrystal_I2C.h>
#include <Wire.h>
LiquidCrystal_I2C lcd(0x27, 16, 2);
#define PIN_BUTTON 2
#define PIN_AUTOPLAY 1
#define PIN_READWRITE 10
#define PIN_CONTRAST 7
#define SPRITE_RUN1 1
#define SPRITE_RUN2 2
#define SPRITE_JUMP 3
#define SPRITE_JUMP_UPPER '.'
#define SPRITE_JUMP_LOWER 4
#define SPRITE_TERRAIN_EMPTY ' '
#define SPRITE_TERRAIN_SOLID 5
#define SPRITE_TERRAIN_SOLID_RIGHT 6
#define SPRITE_TERRAIN_SOLID_LEFT 7
#define HERO_HORIZONTAL_POSITION 1
#define TERRAIN_WIDTH 16
#define TERRAIN_EMPTY 0
#define TERRAIN_LOWER_BLOCK 1
#define TERRAIN_UPPER_BLOCK 2
#define HERO_POSITION_OFF 0
#define HERO_POSITION_RUN_LOWER_1 1
#define HERO_POSITION_RUN_LOWER_2 2
#define HERO_POSITION_JUMP_1 3 // Starting a jump
#define HERO_POSITION_JUMP_2 4 // Half-way up
#define HERO_POSITION_JUMP_3 5 // Jump is on upper row
#define HERO_POSITION_JUMP_4 6 // Jump is on upper row
#define HERO_POSITION_JUMP_5 7 // Jump is on upper row
#define HERO_POSITION_JUMP_6 8 // Jump is on upper row
#define HERO_POSITION_JUMP_7 9 // Half-way down
#define HERO_POSITION_JUMP_8 10 // About to land
#define HERO_POSITION_RUN_UPPER_1 11
#define HERO_POSITION_RUN_UPPER_2 12
static char terrainUpper[TERRAIN_WIDTH + 1];
static char terrainLower[TERRAIN_WIDTH + 1];
static bool buttonPushed = false;
void initializeGraphics() {
static byte graphics[] =
{
// Dino Run position 1
B11110,
B10111,
B11110,
B11100,
B11111,
B11100,
B10010,
B11011,
// Dino Run position 2
B11110,
B10111,
B11110,
B11100,
B11111,
B11100,
B01010,
B10011,
// Dino Jump
B11110,
B10111,
B11110,
B11100,
B11111,
B11110,
B10001,
B00000,
// Jump lower part [lower part of Dino while jumping]
B11111,
B11100,
B10010,
B11011,
B00000,
B00000,
B00000,
B00000,
// Cactus Center part
B00100,
B11111,
B00100,
B00101,
B11111,
B00100,
B00100,
B00100,
// Cactus right part
B00000,
B00011,
B00000,
B00000,
B00011,
B00000,
B00000,
B00000,
// Cactus left part
B00000,
B11000,
B00000,
B01000,
B11000,
B00000,
B00000,
B00000,
// Jump upper part [upper part of Dino while jumping]
B00000,
B00000,
B00000,
B00000,
B11110,
B10111,
B11110,
B11100,
};
int i;
for (i = 0; i < 7; ++i) {
lcd.createChar(i + 1, &graphics[i * 8]);
}
for (i = 0; i < TERRAIN_WIDTH; ++i)
{
terrainUpper[i] = SPRITE_TERRAIN_EMPTY;
terrainLower[i] = SPRITE_TERRAIN_EMPTY;
}
}
void advanceTerrain(char* terrain, byte newTerrain) {
for (int i = 0; i < TERRAIN_WIDTH; ++i) {
char current = terrain[i];
char next = (i == TERRAIN_WIDTH - 1) ? newTerrain : terrain[i + 1];
switch (current) {
case SPRITE_TERRAIN_EMPTY:
terrain[i] = (next == SPRITE_TERRAIN_SOLID) ? SPRITE_TERRAIN_SOLID_RIGHT : SPRITE_TERRAIN_EMPTY;
break;
case SPRITE_TERRAIN_SOLID:
terrain[i] = (next == SPRITE_TERRAIN_EMPTY) ? SPRITE_TERRAIN_SOLID_LEFT : SPRITE_TERRAIN_SOLID;
break;
case SPRITE_TERRAIN_SOLID_RIGHT:
terrain[i] = SPRITE_TERRAIN_SOLID;
break;
case SPRITE_TERRAIN_SOLID_LEFT:
terrain[i] = SPRITE_TERRAIN_EMPTY;
break;
}
}
}
bool drawHero(byte position, char* terrainUpper, char* terrainLower, unsigned int score)
{
bool collide = false;
char upperSave = terrainUpper[HERO_HORIZONTAL_POSITION];
char lowerSave = terrainLower[HERO_HORIZONTAL_POSITION];
byte upper, lower;
switch (position) {
case HERO_POSITION_OFF:
upper = lower = SPRITE_TERRAIN_EMPTY;
break;
case HERO_POSITION_RUN_LOWER_1:
upper = SPRITE_TERRAIN_EMPTY;
lower = SPRITE_RUN1;
break;
case HERO_POSITION_RUN_LOWER_2:
upper = SPRITE_TERRAIN_EMPTY;
lower = SPRITE_RUN2;
break;
case HERO_POSITION_JUMP_1:
case HERO_POSITION_JUMP_8:
upper = SPRITE_TERRAIN_EMPTY;
lower = SPRITE_JUMP;
break;
case HERO_POSITION_JUMP_2:
case HERO_POSITION_JUMP_7:
upper = SPRITE_JUMP_UPPER;
lower = SPRITE_JUMP_LOWER;
break;
case HERO_POSITION_JUMP_3:
case HERO_POSITION_JUMP_4:
case HERO_POSITION_JUMP_5:
case HERO_POSITION_JUMP_6:
upper = SPRITE_JUMP;
lower = SPRITE_TERRAIN_EMPTY;
break;
case HERO_POSITION_RUN_UPPER_1:
upper = SPRITE_RUN1;
lower = SPRITE_TERRAIN_EMPTY;
break;
case HERO_POSITION_RUN_UPPER_2:
upper = SPRITE_RUN2;
lower = SPRITE_TERRAIN_EMPTY;
break;
}
if (upper != ' ')
{
terrainUpper[HERO_HORIZONTAL_POSITION] = upper;
collide = (upperSave == SPRITE_TERRAIN_EMPTY) ? false : true;
}
if (lower != ' ') {
terrainLower[HERO_HORIZONTAL_POSITION] = lower;
collide |= (lowerSave == SPRITE_TERRAIN_EMPTY) ? false : true;
}
byte digits = (score > 9999) ? 5 : (score > 999) ? 4 : (score > 99) ? 3 : (score > 9) ? 2 : 1;
terrainUpper[TERRAIN_WIDTH] = '\0';
terrainLower[TERRAIN_WIDTH] = '\0';
char temp = terrainUpper[16 - digits];
terrainUpper[16 - digits] = '\0';
lcd.setCursor(0, 0);
lcd.print(terrainUpper);
terrainUpper[16 - digits] = temp;
lcd.setCursor(0, 1);
lcd.print(terrainLower);
lcd.setCursor(16 - digits, 0);
lcd.print(score);
terrainUpper[HERO_HORIZONTAL_POSITION] = upperSave;
terrainLower[HERO_HORIZONTAL_POSITION] = lowerSave;
return collide;
}
// Handle the button push as an interrupt
void buttonPush() {
buttonPushed = true;
}
void setup() {
pinMode(PIN_READWRITE, OUTPUT);
digitalWrite(PIN_READWRITE, LOW);
pinMode(PIN_CONTRAST, OUTPUT);
digitalWrite(PIN_CONTRAST, LOW);
pinMode(PIN_BUTTON, INPUT);
digitalWrite(PIN_BUTTON, HIGH);
pinMode(PIN_AUTOPLAY, OUTPUT);
digitalWrite(PIN_AUTOPLAY, HIGH);
lcd.init();
lcd.backlight();
// Digital pin 2 maps to interrupt 0
attachInterrupt(0/*PIN_BUTTON*/, buttonPush, FALLING);
initializeGraphics();
lcd.begin(16, 2);
}
void loop() {
static byte heroPos = HERO_POSITION_RUN_LOWER_1;
static byte newTerrainType = TERRAIN_EMPTY;
static byte newTerrainDuration = 1;
static bool playing = false;
static bool blink = false;
static unsigned int distance = 0;
if (!playing) {
drawHero((blink) ? HERO_POSITION_OFF : heroPos, terrainUpper, terrainLower, distance >> 3);
if (blink) {
lcd.setCursor(0, 0);
lcd.print("Press Start");
}
delay(250);
blink = !blink;
if (buttonPushed) {
initializeGraphics();
heroPos = HERO_POSITION_RUN_LOWER_1;
playing = true;
buttonPushed = false;
distance = 0;
}
return;
}
// Shift the terrain to the left
advanceTerrain(terrainLower, newTerrainType == TERRAIN_LOWER_BLOCK ? SPRITE_TERRAIN_SOLID : SPRITE_TERRAIN_EMPTY);
advanceTerrain(terrainUpper, newTerrainType == TERRAIN_UPPER_BLOCK ? SPRITE_TERRAIN_SOLID : SPRITE_TERRAIN_EMPTY);
// Make new terrain to enter on the right
if (--newTerrainDuration == 0) {
if (newTerrainType == TERRAIN_EMPTY) {
newTerrainType = (random(3) == 0) ? TERRAIN_UPPER_BLOCK : TERRAIN_LOWER_BLOCK;
newTerrainDuration = 2 + random(10);
} else {
newTerrainType = TERRAIN_EMPTY;
newTerrainDuration = 10 + random(10);
}
}
if (buttonPushed) {
if (heroPos <= HERO_POSITION_RUN_LOWER_2) heroPos = HERO_POSITION_JUMP_1;
buttonPushed = false;
}
if (drawHero(heroPos, terrainUpper, terrainLower, distance >> 3)) {
playing = false; // The hero collided with something. Too bad.
} else {
if (heroPos == HERO_POSITION_RUN_LOWER_2 || heroPos == HERO_POSITION_JUMP_8) {
heroPos = HERO_POSITION_RUN_LOWER_1;
} else if ((heroPos >= HERO_POSITION_JUMP_3 && heroPos <= HERO_POSITION_JUMP_5) && terrainLower[HERO_HORIZONTAL_POSITION] != SPRITE_TERRAIN_EMPTY) {
heroPos = HERO_POSITION_RUN_UPPER_1;
} else if (heroPos >= HERO_POSITION_RUN_UPPER_1 && terrainLower[HERO_HORIZONTAL_POSITION] == SPRITE_TERRAIN_EMPTY) {
heroPos = HERO_POSITION_JUMP_5;
} else if (heroPos == HERO_POSITION_RUN_UPPER_2) {
heroPos = HERO_POSITION_RUN_UPPER_1;
} else {
++heroPos;
}
++distance;
digitalWrite(PIN_AUTOPLAY, terrainLower[HERO_HORIZONTAL_POSITION + 2] == SPRITE_TERRAIN_EMPTY ? HIGH : LOW);
}
delay(100);
}Last updated
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