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lcd_full.c
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//Bit Racer LCD Game using AVR
#define F_CPU 1000000UL
#include<avr/io.h> //including required libraries
#include<util/delay.h>
#include<stdlib.h>
#include<avr/interrupt.h>
#include "lcd.h"
//declaration of variables
uint8_t y=0;
uint8_t rep2=0,rep3=0,rep4=0,rep51=0,rep52=0,rep6=0; //for repeat; eg. rep2 is for repeating level 2
uint8_t i,j,k,l;
uint8_t score=0;
char r[4];
int main(void)
{
DDRB |= 0b11111111; //Connect LCD data pins on PORTB
DDRD |= 0b00000011; //Setting output for RS and EN
DDRD &= ~(1<<PIND2); //Button at pind2 for ext interrupt
PORTD |= (1<<PIND2);
GICR = (1<<INT0); // Enable INT0
MCUCR = (1<<ISC01) | (1<<ISC00); // Trigger INT0 on rising edge
sei();
DDRA |= (1<<PINA0);
PORTA |= (1<<PINA0);
Lcd4_Init(); //Initialize the LCD in 4bit mode
while(1)
{
////////////////////////////////////////////////GAME INTRO///////////////////////////////////////
Lcd4_Set_Cursor(0,0); //Game Title
SendString("B"); _delay_ms(200);
SendString("i"); _delay_ms(200);
SendString("T"); _delay_ms(200);
SendString(" "); _delay_ms(200);
SendString("R"); _delay_ms(200);
SendString("a"); _delay_ms(200);
SendString("c"); _delay_ms(200);
SendString("e"); _delay_ms(200);
SendString("r"); _delay_ms(200);
_delay_ms(500);
//End Title
/////////////////////////////////////////GAME START///////////////////////////////////////////////
Lcd4_Clear(); //for clear screen
Lcd4_Set_Cursor(0,0); //Put @ at (0,0)
Lcd4_Write_String("@");
/////////////////////////////////////////OBSTACLE LEVELS/////////////////////////////////////////
///////////////////////////////Classic Level(0)/////////////////////
//obstacles come at normal speed
obslvl01:
for(i=15;i>=0;i--) //Obstacle Level 0 1
{
if(i>0)
{
Lcd4_Set_Cursor(i,0);
Lcd4_Write_String("# ");
_delay_ms(300);
}
else
{
if(i==0 && y==1)
{
Lcd4_Set_Cursor(0,0);
Lcd4_Write_String("# ");
_delay_ms(300);
Lcd4_Set_Cursor(0,0);
Lcd4_Write_String(" ");
goto obslvl02;
}
if(i==0 && y==0) //Collision Detection
{
goto end1;
}
}
}
obslvl02:
for(i=15;i>=0;i--) //Obstacle Level 0 2
{
if(i>0)
{
Lcd4_Set_Cursor(i,1);
Lcd4_Write_String("# ");
_delay_ms(300);
}
else
{
if(i==0 && y==0)
{
Lcd4_Set_Cursor(0,1);
Lcd4_Write_String("# ");
_delay_ms(300);
Lcd4_Set_Cursor(0,1);
Lcd4_Write_String(" ");
goto obslvl11;
}
if(i==0 && y==1) //Collision Detection
{
goto end2;
}
}
}
////////////////////////////////////////////////////Classic Fast(1)///////////////////////////////////
//obstacles come faster
obslvl11:
score++; //increment score
for(i=15;i>=0;i--) //Obstacle Level 1 1
{
if(i>0)
{
Lcd4_Set_Cursor(i,0);
Lcd4_Write_String("# ");
_delay_ms(100);
}
else
{
if(i==0 && y==1)
{
Lcd4_Set_Cursor(0,0);
Lcd4_Write_String("# ");
_delay_ms(100);
Lcd4_Set_Cursor(0,0);
Lcd4_Write_String(" ");
goto obslvl12;
}
if(i==0 && y==0) //Collision Detection
{
goto end1;
}
}
}
obslvl12:
for(i=15;i>=0;i--) //Obstacle Level 1 2
{
if(i>0)
{
Lcd4_Set_Cursor(i,1);
Lcd4_Write_String("# ");
_delay_ms(100);
}
else
{
if(i==0 && y==0)
{
Lcd4_Set_Cursor(0,1);
Lcd4_Write_String("# ");
_delay_ms(100);
Lcd4_Set_Cursor(0,1);
Lcd4_Write_String(" ");
goto obslvl2;
}
if(i==0 && y==1) //Collision Detection
{
goto end2;
}
}
}
//////////////////////////////////////////////Classic Continuous(2)//////////////////////////////////////
//obstacles come continuously
obslvl2:
score++;
for(i=15,j=20,k=25,l=30;i>=0,j>=0,k>=0,l>=0;i--,j--,k--,l--) //Obstacle Level 2
{
if(i>0) /////1
{
Lcd4_Set_Cursor(i,0);
Lcd4_Write_String("# ");
_delay_ms(30);
if(i==5)
{
k=15;
}
}
else
{
if(i==0 && y==1)
{
Lcd4_Set_Cursor(0,0);
Lcd4_Write_String("# ");
_delay_ms(30);
Lcd4_Set_Cursor(0,0);
Lcd4_Write_String(" ");
}
if(i==0 && y==0) //Collision Detection
{
goto end1;
}
}
//////2
if(j>0)
{
Lcd4_Set_Cursor(j,1);
Lcd4_Write_String("# ");
_delay_ms(30);
if(j==5)
{
l=15;
}
}
else
{
if(j==0 && y==0)
{
Lcd4_Set_Cursor(0,1);
Lcd4_Write_String("# ");
_delay_ms(30);
Lcd4_Set_Cursor(0,1);
Lcd4_Write_String(" ");
}
if(j==0 && y==1) //Collision Detection
{
goto end2;
}
}
///3
if(k>0)
{
Lcd4_Set_Cursor(k,0);
Lcd4_Write_String("# ");
_delay_ms(30);
if(k==5)
{
i=15;
}
}
else
{
if(k==0 && y==1)
{
Lcd4_Set_Cursor(0,0);
Lcd4_Write_String("# ");
_delay_ms(30);
Lcd4_Set_Cursor(0,0);
Lcd4_Write_String(" ");
}
if(k==0 && y==0) //Collision Detection
{
goto end2;
}
}
////4
if(l>0)
{
Lcd4_Set_Cursor(l,1);
Lcd4_Write_String("# ");
_delay_ms(30);
if(l==5)
{
j=15;
}
}
else
{
if(l==0 && y==0)
{
Lcd4_Set_Cursor(0,1);
Lcd4_Write_String("# ");
_delay_ms(30);
Lcd4_Set_Cursor(0,1);
Lcd4_Write_String(" ");
}
if(l==0 && y==1) //Collision Detection
{
goto end2;
}
}
if(rep2==64)
{
/*LCDInitialize();*/
Lcd4_Clear();
goto obslvl31;
}
rep2++;
}
//////////////////////////////////////////////////For placing the @ at correct position/////////////////////////////////
if(y==0)
{
Lcd4_Set_Cursor(0,0);
Lcd4_Write_String("@"); //Put @ at (0,0)
}
if(y==1)
{
Lcd4_Set_Cursor(0,1);
Lcd4_Write_String("@"); //Put @ at 0,1
}
_delay_ms(500);
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////VARIABLE SPEED(3)////////////////////////////////////////////////
//the obstacle's speed varies
obslvl31:
score++;
for(i=15;i>=0;i--) //Obstacle Level 3 1
{
if(i>0)
{
Lcd4_Set_Cursor(i,1);
Lcd4_Write_String("# ");
if(i%4==0)
{
_delay_ms(200);
}
else
{
_delay_ms(50);
}
}
else
{
if(i==0 && y==0)
{
Lcd4_Set_Cursor(0,1);
Lcd4_Write_String("# ");
_delay_ms(50);
Lcd4_Set_Cursor(0,1);
Lcd4_Write_String(" ");
goto obslvl32;
}
if(i==0 && y==1) //Collision Detection
{
goto end2;
}
}
}
obslvl32:
for(i=15;i>=0;i--) //Obstacle Level 3 2
{
if(i>0)
{
Lcd4_Set_Cursor(i,0);
Lcd4_Write_String("# ");
if(i%4==0)
{
_delay_ms(200);
}
else
{
_delay_ms(50);
}
}
else
{
if(i==0 && y==1)
{
Lcd4_Set_Cursor(0,0);
Lcd4_Write_String("# ");
_delay_ms(50);
Lcd4_Set_Cursor(0,0);
Lcd4_Write_String(" ");
if(rep3<2)
{
rep3++;
goto obslvl31;
}
else
{
goto obslvl41;
}
}
if(i==0 && y==0) //Collision Detection
{
goto end1;
}
}
}
/////////////////////////////////////////////////UP AND DOWN(4)//////////////////////////////////////////////////////
//the obstacles move up and down, while also moving closer
obslvl41:
score++;
for(i=15;i>=0;i--) //Obstacle Level 4 1
{
if(i>0)
{
if(i%2==0)
{
Lcd4_Set_Cursor(i+1,0);
Lcd4_Write_String(" ");
Lcd4_Set_Cursor(i,1);
Lcd4_Write_String("#");
_delay_ms(150);
}
else
{
Lcd4_Set_Cursor(i+1,1);
Lcd4_Write_String(" ");
Lcd4_Set_Cursor(i,0);
Lcd4_Write_String("#");
_delay_ms(150);
}
}
else
{
if(i==0 && y==0)
{
Lcd4_Set_Cursor(1,0);
Lcd4_Write_String(" ");
Lcd4_Set_Cursor(0,1);
Lcd4_Write_String("#");
_delay_ms(150);
Lcd4_Set_Cursor(0,1);
Lcd4_Write_String(" ");
goto obslvl42;
}
if(i==0 && y==1) //Collision Detection
{
goto end2;
}
}
}
obslvl42:
for(i=15;i>=0;i--) //Obstacle Level 4 2
{
if(i>0)
{
if(i%2==0)
{
Lcd4_Set_Cursor(i+1,1);
Lcd4_Write_String(" ");
Lcd4_Set_Cursor(i,0);
Lcd4_Write_String("#");
_delay_ms(150);
}
else
{
Lcd4_Set_Cursor(i+1,0);
Lcd4_Write_String(" ");
Lcd4_Set_Cursor(i,1);
Lcd4_Write_String("#");
_delay_ms(150);
}
}
else
{
if(i==0 && y==1)
{
Lcd4_Set_Cursor(1,1);
Lcd4_Write_String(" ");
Lcd4_Set_Cursor(0,0);
Lcd4_Write_String("#");
_delay_ms(150);
Lcd4_Set_Cursor(0,0);
Lcd4_Write_String(" ");
if(rep4<2)
{
rep4++;
goto obslvl41;
}
else
{
goto obslvl51;
}
}
if(i==0 && y==0) //Collision Detection
{
goto end1;
}
}
}
//////////////////////////////////////////////////////////EVIL TWIN(5)/////////////////////////////////////////
//there are 2 obstacles(#), you can pass through one of them
obslvl51:
score++;
for(i=15;i>=0;i--) //Obstacle Level 5 1
{
if(i>0)
{
if(i%4==0)
{
Lcd4_Set_Cursor(i,0);
Lcd4_Write_String("# ");
Lcd4_Set_Cursor(i,1);
Lcd4_Write_String(" ");
_delay_ms(100);
}
else
{
Lcd4_Set_Cursor(i,0);
Lcd4_Write_String("# ");
Lcd4_Set_Cursor(i,1);
Lcd4_Write_String("# ");
_delay_ms(100);
}
}
else
{
if(i==0 && y==1)
{
Lcd4_Set_Cursor(0,0);
Lcd4_Write_String("# ");
Lcd4_Set_Cursor(1,1);
Lcd4_Write_String(" ");
_delay_ms(100);
Lcd4_Set_Cursor(0,0);
Lcd4_Write_String(" ");
if(rep51<2)
{
rep51++;
goto obslvl51;
}
else
{
goto obslvl52;
}
}
if(i==0 && y==0) //Collision Detection
{
goto end1;
}
}
}
obslvl52:
for(i=15;i>=0;i--) //Obstacle Level 5 2
{
if(i>0)
{
if(i%4==0)
{
Lcd4_Set_Cursor(i,1);
Lcd4_Write_String("# ");
Lcd4_Set_Cursor(i,0);
Lcd4_Write_String(" ");
_delay_ms(100);
}
else
{
Lcd4_Set_Cursor(i,1);
Lcd4_Write_String("# ");
Lcd4_Set_Cursor(i,0);
Lcd4_Write_String("# ");
_delay_ms(100);
}
}
else
{
if(i==0 && y==0)
{
Lcd4_Set_Cursor(0,1);
Lcd4_Write_String("# ");
Lcd4_Set_Cursor(1,0);
Lcd4_Write_String(" ");
_delay_ms(100);
Lcd4_Set_Cursor(0,1);
Lcd4_Write_String(" ");
if(rep52<2)
{
rep52++;
goto obslvl52;
}
else
{
goto obslvl61;
}
}
if(i==0 && y==1) //Collision Detection
{
goto end2;
}
}
}
///////////////////////////////////////////////////////LIGHTS OUT(6)///////////////////////////////////////
//the backlight of the LCD turns on and off
obslvl61:
score++;
for(i=15;i>=0;i--) //Obstacle Level 6 1
{
if(i>0)
{
Lcd4_Set_Cursor(i,0);
Lcd4_Write_String("# ");
_delay_ms(100);
if(i==10)
{
PORTA &= ~(1<<PINA0);
}
if(i==5)
{
PORTA |= 1<<PINA0;
}
}
else
{
if(i==0 && y==1)
{
Lcd4_Set_Cursor(0,0);
Lcd4_Write_String("# ");
_delay_ms(100);
Lcd4_Set_Cursor(0,0);
Lcd4_Write_String(" ");
goto obslvl62;
}
if(i==0 && y==0) //Collision Detection
{
goto end1;
}
}
}
obslvl62:
for(i=15;i>=0;i--) //Obstacle Level 6 2
{
if(i>0)
{
Lcd4_Set_Cursor(i,1);
Lcd4_Write_String("# ");
_delay_ms(100);
if(i==10)
{
PORTA &= ~(1<<PINA0);
}
if(i==5)
{
PORTA |= 1<<PINA0;
}
}
else
{
if(i==0 && y==0)
{
Lcd4_Set_Cursor(0,1);
Lcd4_Write_String("# ");
_delay_ms(100);
Lcd4_Set_Cursor(0,1);
Lcd4_Write_String(" ");
if(rep6<2)
{
rep6++;
goto obslvl61;
}
else
{
goto obslvl71;
}
}
if(i==0 && y==1) //Collision Detection
{
goto end2;
}
}
}
//////////////////////////////////////////////////////////HELL(7)////////////////////////////////////
//combination of level 5 and 6
obslvl71:
score++;
for(i=15;i>=0;i--) //Obstacle Level 7 1
{
if(i>0)
{
if(i%4==0)
{
Lcd4_Set_Cursor(i,0);
Lcd4_Write_String("# ");
Lcd4_Set_Cursor(i,1);
Lcd4_Write_String(" ");
_delay_ms(50);
}
else
{
Lcd4_Set_Cursor(i,0);
Lcd4_Write_String("# ");
Lcd4_Set_Cursor(i,1);
Lcd4_Write_String("# ");
_delay_ms(50);
if(i==10)
{
PORTA &= ~(1<<PINA0);
}
if(i==5)
{
PORTA |= 1<<PINA0;
}
}
}
else
{
if(i==0 && y==1)
{
Lcd4_Set_Cursor(0,0);
Lcd4_Write_String("# ");
Lcd4_Set_Cursor(1,1);
Lcd4_Write_String(" ");
_delay_ms(50);
Lcd4_Set_Cursor(0,0);
Lcd4_Write_String(" ");
goto obslvl72;
}
if(i==0 && y==0) //Collision Detection
{
goto end1;
}
}
}
obslvl72:
for(i=15;i>=0;i--) //Obstacle Level 7 2
{
if(i>0)
{
if(i%4==0)
{
Lcd4_Set_Cursor(i,1);
Lcd4_Write_String("# ");
Lcd4_Set_Cursor(i,0);
Lcd4_Write_String(" ");
_delay_ms(50);
}
else
{
Lcd4_Set_Cursor(i,1);
Lcd4_Write_String("# ");
Lcd4_Set_Cursor(i,0);
Lcd4_Write_String("# ");
_delay_ms(50);
}
if(i==10)
{
PORTA &= ~(1<<PINA0);
}
if(i==5)
{
PORTA |= 1<<PINA0;
}
}
else
{
if(i==0 && y==0)
{
Lcd4_Set_Cursor(0,1);
Lcd4_Write_String("# ");
Lcd4_Set_Cursor(1,0);
Lcd4_Write_String(" ");
_delay_ms(50);
Lcd4_Set_Cursor(0,1);
Lcd4_Write_String(" ");
goto obslvl71; //go back to level 7 1
}
if(i==0 && y==1) //Collision Detection
{
goto end2;
}
}
}
/////////////////////////////////////////////////////////////INFINITE OBSTACLES////////////////////////////////
//obstacles keep on repeating from level 7 1
} //End Of while(1)
/////////////////////////////////////////////GAME ENDINGS//////////////////////////////////////////////
end1: //Game Over! 1
Lcd4_Set_Cursor(0,0);
Lcd4_Write_String("@#");
Lcd4_Write_String(" Game Over!");
Lcd4_Set_Cursor(0,1);
Lcd4_Write_String("Score:");
itoa(score*100,r,10);
Lcd4_Write_String(r);
goto theend;
end2: //Game Over! 2
Lcd4_Set_Cursor(0,1);
Lcd4_Write_String("@#");
Lcd4_Write_String(" Game Over!");
Lcd4_Set_Cursor(0,0);
Lcd4_Write_String("Score:");
itoa(score*100,r,10);
Lcd4_Write_String(r);
goto theend;
theend:
; //blank statement
} //End Of main()
///////////////////////////////////////////////////////INTERRUPT FUNCTION/////////////////////////////////
ISR(INT0_vect)
{
if(y==0)
{
Lcd4_Set_Cursor(0,0);
Lcd4_Write_String(" ");
Lcd4_Set_Cursor(0,1);
Lcd4_Write_String("@");
y=1;
PORTD |= 1<<PD2;
}
else if(y==1)
{
Lcd4_Set_Cursor(0,1);
Lcd4_Write_String(" ");
Lcd4_Set_Cursor(0,0);
Lcd4_Write_String("@");
y=0;
PORTD |= 1<<PD2;
}
}