Michael Birney
Completed Snake Program
Dependencies: N5110 PinDetect PowerControl mbed
Fork of
DocTest
by 
Craig Evans
Diff: main.cpp
- Revision:
- 4:551dea241d0a
- Parent:
- 3:478b090b7e1b
- Child:
- 5:1bfc306466db
diff -r 478b090b7e1b -r 551dea241d0a main.cpp
--- a/main.cpp Thu Apr 09 13:10:14 2015 +0000
+++ b/main.cpp Tue Apr 14 15:34:37 2015 +0000
@@ -1,50 +1,76 @@
#include "mbed.h"
#include "N5110.h"
+#include <vector>
+#include <cstddef> // std::size_t
+#include <valarray>
+#include <iostream>
-#include "PinDetect.h"
+//#include "PinDetect.h"
// change this to alter tolerance of joystick direction
-#define DIRECTION_TOLERANCE 0.2
-// VCC,SCE,RST,D/C,MOSI,SCLK,LED
+#define DIRECTION_TOLERANCE 0.1
+// VCC,SCE,RST,D/C,MOSI,SCLK,LED
N5110 lcd(p7,p8,p9,p10,p11,p13,p21);
-DigitalOut led2(LED2);
-InterruptIn pb(p16);
+BusOut myleds(LED1,LED2,LED3,LED4);
+InterruptIn startButton(p16);
+InterruptIn resetButton(p17);
+
// connections for joystick
DigitalIn button(p18);
AnalogIn xPot(p19);
AnalogIn yPot(p20);
+Serial serial(USBTX,USBRX);
+int snake[84][47];
+bool gamePlaying =0;
-bool gamePlaying =0;
+vector<int> snakeX (5);
+vector<int> snakeY (5,27);
+
+
+
+
+//snakeX[4]=21;
+
+//int snakeX[4]={21,22,23,24}; //5 pixels start position 21 22 23 24 25
+//int snakeY[4]={27,27,27,27}; //5 pixels y position 27 27 27 27 27
+
+
+void startingSnake(){
+
+ for (int i=0; i<5; i++){
+ lcd.setPixel(snakeX[i],snakeY[i]);
+ // lcd.drawRect(snakeX[i],snakeY[i],1,1,1);
+ }
+ }
+
+
// timer to regularly read the joystick
Ticker pollJoystick;
-/*pin.mode( PullDown );
- pin.attach_asserted( &keyPressed );
- pin.attach_deasserted( &keyReleased );
- pin.attach_asserted_held( &keyPressedHeld );
- pin.attach_deasserted_held( &keyReleasedHeld );
- pin.setSampleFrequency();*/
+
+Ticker startGame;
-/*
-void keyPressed( void ) {
-joystick.direction =DOWN;
-led2 = 1;
-}
+void Boundary(){
-void keyReleased( void ) {
-joystick.direction =UNKNOWN;
-led2 = 0;
+
+ for(int x = 0; x< 84; x++) {
+ lcd.setPixel(x,0);
+ }
+ for(int x = 0; x< 84; x++) {
+ lcd.setPixel(x,47);
+ }
+ for(int y = 0; y< 48; y++) {
+ lcd.setPixel(0,y);
+ }
+ for(int y = 0; y< 48; y++) {
+ lcd.setPixel(83,y);
+ }
+
+ lcd.refresh();
+
+
}
-
-void keyPressedHeld( void ) {
-led2 = 1;
-}
-
-void keyReleasedHeld( void) {
-}*/
-
-
enum Difficulty {
EASY,
MEDIUM,
@@ -55,7 +81,6 @@
Difficulty currentDifficulty=EASY;
-
// create enumerated type (0,1,2,3 etc. for direction)
// could be extended for diagonals etc.
enum DirectionName {
@@ -67,8 +92,6 @@
UNKNOWN
};
-
-
// struct for Joystick
typedef struct JoyStick Joystick;
struct JoyStick {
@@ -83,6 +106,7 @@
Joystick joystick;
+DirectionName previousDirection =RIGHT;
// read default positions of the joystick to calibrate later readings
void calibrateJoystick()
@@ -117,6 +141,106 @@
}
}
+
+void updateSnakeArray(){
+
+ if (joystick.direction==LEFT && previousDirection==RIGHT){
+ joystick.direction=RIGHT;
+ }
+
+ if (joystick.direction==RIGHT && previousDirection==LEFT){
+ joystick.direction=LEFT;
+ }
+
+ if (joystick.direction==UP && previousDirection==DOWN){
+ joystick.direction=DOWN;
+ }
+
+ if (joystick.direction==DOWN && previousDirection==UP){
+ joystick.direction=UP;
+ }
+
+ if (joystick.direction==UNKNOWN || joystick.direction==CENTRE){
+ joystick.direction= previousDirection;
+ }
+
+
+ lcd.clearPixel(snakeX[0],snakeY[0]);//delete tail
+ // lcd.drawRect(snakeX[0],snakeY[0],1,1,2);
+
+ for (int i =0; i<snakeX.size(); i++){ // shift elements
+ snakeX[i]=snakeX[i + 1]; // apart from head
+ snakeY[i]=snakeY[i+ 1];
+ }
+
+ switch(joystick.direction){
+
+ case UP:snakeX[4]=snakeX[3];
+ snakeY[4]=snakeY[3]-1;
+ break;
+
+ case DOWN:
+ snakeX[4]=snakeX[3];
+ snakeY[4]=snakeY[3]+1;
+ break;
+
+ case LEFT:
+ snakeX[4]=snakeX[3]-1;
+ snakeY[4]=snakeY[3];
+ break;
+
+ case RIGHT:
+ snakeX[4]=snakeX[3]+1;
+ snakeY[4]=snakeY[3];
+ break;
+
+ case CENTRE:
+ snakeX[4]=snakeX[3]+1;
+ snakeY[4]=snakeY[3];
+ break;
+ case UNKNOWN:
+ snakeX[4]=snakeX[3]+1;
+ snakeY[4]=snakeY[3];
+ break;
+
+
+ }
+
+ /* snakeX[0]=snakeX[1];
+ snakeX[1]=snakeX[2];
+ snakeX[2]=snakeX[3];
+ snakeX[3]=snakeX[4];
+ snakeY[0]=snakeY[1];
+ snakeY[1]=snakeY[2];
+ snakeY[2]=snakeY[3];
+ snakeY[3]=snakeY[4];
+
+
+ */
+
+}
+
+void checkForCollision(){
+
+ if (snakeX.back()==0 || snakeX.back()==83 || snakeY.back()==0 ||snakeY.back()==47){
+ startGame.detach();
+ lcd.clear();
+
+
+
+ }
+
+
+ }
+void startButtonPressed(){
+ gamePlaying=1;
+ myleds=15;
+ }
+
+ void resetButtonPressed(){
+ gamePlaying=0;
+ myleds=0;
+ }
void displaySplash()
{
// these are default settings so not strictly needed
@@ -190,81 +314,132 @@
lcd.drawCircle(10,43,2,1);
gameSpeed=1.0/8;
}
+void drawSnake() {
+
+ for(int x =10; x<15; x++) {
+ lcd.setPixel(x,25);
+ // lcd.drawRect(x,25,2,2,1);
+ snake[x][25]=1;
+ }
+}
+
+
+void checkSelectedDifficulty() {
+
+ switch(currentDifficulty) {
+ case EASY:
+
+ switch (joystick.direction) {
+
+ case UP:
+ hardSelected();
+ break;
+
+
+ case DOWN:
+ mediumSelected();
+ break;
+ }
+ break;
+ case MEDIUM:
+
+ switch (joystick.direction) {
+
+ case UP:
+ easySelected();
+ break;
+
+
+ case DOWN:
+ hardSelected();
+ break;
+ }
+
+
+
+ break;
+ case HARD:
+ switch (joystick.direction) {
+
+ case UP:
+ mediumSelected();
+ break;
+
+
+ case DOWN:
+ easySelected();
+ break;
+ }
+ break;
+ }
+ wait(0.2);
+}
+
+int updateGameFlag=0;
+void updateGameISR(){
+ updateGameFlag=1;
+ }
int main()
{
// first need to initialise display
lcd.init();
- // pb.rise(&flip);
+
displaySplash();
- wait(1);
+ wait(4);
easySelected();
joystick.direction=UNKNOWN;
calibrateJoystick(); // get centred values of joystick
- pollJoystick.attach(&updateJoystick,1.0/5.0); // read joystick 10 times per second
-
-
-
- while(1) {
-
- if (gamePlaying==0) {
-
-
- switch(currentDifficulty) {
- case EASY:
-
- switch (joystick.direction) {
-
- case UP:
- hardSelected();
- break;
-
-
- case DOWN:
- mediumSelected();
- break;
- }
- break;
-
-
- case MEDIUM:
-
- switch (joystick.direction) {
-
- case UP:
- easySelected();
- break;
-
-
- case DOWN:
- hardSelected();
- break;
- }
-
-
-
- break;
- case HARD:
- switch (joystick.direction) {
-
- case UP:
- mediumSelected();
- break;
-
-
- case DOWN:
- easySelected();
- break;
- }
- break;
- wait(0.1);
- }
-
- }
-
+ pollJoystick.attach(&updateJoystick,1.0/5.0);
+ startGame.attach(&updateGameISR,gameSpeed); // read joystick 10 times per second
+ startButton.mode(PullUp);
+ startButton.rise(&startButtonPressed);
+ resetButton.rise(&resetButtonPressed);
+ // startGame.attach(&startButtonPressed,10);
+
+ while(1) {
+ if (gamePlaying==0){
+ checkSelectedDifficulty();
}
+ else if (gamePlaying==1){
+ lcd.clear();
+ lcd.normalMode(); // normal colour mode
+ Boundary();
+ snakeX[0]=21;
+ snakeX[1]=22;
+ snakeX[2]=23;
+ snakeX[3]=24;
+ snakeX[4]=25;
+ pollJoystick.detach();
+ startGame.attach(&updateGameISR,0.1);
+ startingSnake();
+ lcd.refresh();
+ //init game start time back food
+ while (1){
+ if(updateGameFlag==1){
+ //updateJoystick();
+ updateGameFlag=0;
+ updateJoystick();
+ // lcd.clearPixel(snakeX[0],snakeY[0]);
+ // updateSnakeDirection();
+ updateSnakeArray();
+ for (int i=0;i<snakeX.size();i++){
+ // lcd.drawRect(snakeX[i],snakeY[i],1,1,1);
+ lcd.setPixel(snakeX[i],snakeY[i]);
+ }
+ lcd.refresh();
+ previousDirection=joystick.direction;
+ checkForCollision();
+ }
+
+ }
+
+ }
+ }
+
+
}
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