ELEC2645 (2015/16)
My ELEC2645 project. Nikollao Sulollari. 200804685
Dependencies: N5110 SoftPWM mbed
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Treasure_Hunt
by 
ELEC2645 (2015/16)
Diff: main.cpp
- Revision:
- 21:6b02ef341358
- Parent:
- 20:59aa6189a47d
--- a/main.cpp Mon May 02 17:57:27 2016 +0000
+++ b/main.cpp Wed May 04 09:19:50 2016 +0000
@@ -9,13 +9,11 @@
int main(void)
{
lcd.init(); ///initialise LED
- init_K64F();
- init_serial();
+ init_K64F(); ///init K64F
+ init_serial(); ///initiate connection with PC port
init_game(); ///initialize game
- led_output = fsm[fsm_state];
+ led_output = fsm[fsm_state]; ///set FSM to turn on LEDs
calibrateJoystick(); ///calibrate joystick
- button.rise(&button_isr); ///assign rise with ISR
- button1.rise(&button1_isr);
game_ticker.attach(&game_timer_isr,0.2); ///attach ticker for the menu different from the main ticker
menu();
@@ -24,46 +22,34 @@
ticker.attach(&timer_isr,game_speed); ///attach ticker with ISR. Speed is selected by the user
reset = level; ///set reset = level to check later if level has increased
-
+ g_button1_flag = 0;
+ timer.start();
while (1) {
-
+
if (g_timer_flag) {///if timer flag is UP
g_timer_flag = 0; ///reset flag
- //g_button_flag = 0;
lcd.clear();
+ if (reset < level) { ///if level has increased
+ g_button1_flag = 0; ///reset weapon button
+ reset = level; ///update reset
+ rectY = 0; ///set enemies to default position
+ circleX = 0;
+ }
guidance(); ///get guidance
hero(); ///call hero
enemies(); ///generate enemies
obstacles(); ///generate obstacles
- if (g_button1_flag) { ///if heavy weapon button is pressed
-
- g_button1_flag = 0;
- rectY = 60; ///remove enemies from field
- rectX = -10;
- circleX = -10;
- circleY = 100;
- //timer.reset();
- //timer.start();
+ //float count_time = timer.read();
+
+ if (g_button1_flag) { ///the blue LED indicates if the weapon is ready to use or not
+ blue_led = 0;
+ } else {
+ blue_led = 1;
}
- //float count_time = timer.read();
- if (reset < level) { ///if level has increased
- reset = level; ///update reset
- rectY = 0; ///remove enemies from field
- circleX = 0;
- }
- if (g_button1_flag) { ///if heavy weapon button is pressed
-
- g_button1_flag = 0;
- rectY = 60; ///remove enemies from field
- rectX = -10;
- circleX = -10;
- circleY = 100;
- //timer.reset();
- //timer.start();
- }
+
checkOverlap(); ///check is hero has overlapped with enemies or obstacles
- updateJoystick();
+ updateJoystick(); ///update joystick
lcd.refresh();
}
sleep();///use sleep and timer triggered interrupt to save power
@@ -71,9 +57,7 @@
}
-
-
-
+//mbed functions
void init_serial()
@@ -95,7 +79,10 @@
// resistors that are enabled by default using InterruptIn
sw2.mode(PullNone);
sw3.mode(PullNone);
- button.mode(PullDown);
+
+ button.rise(&button_isr); ///assign rise with ISR
+ button1.rise(&button1_isr);
+ button.mode(PullDown); ///use PullDown mode
button1.mode(PullDown);
}
@@ -144,102 +131,141 @@
void enemies()
{
/// generate enemies in the screen depending on the level of difficulty
- if (level == 0) {
+ if (level == 0) { ///generate enemies at level 0
+
+ enemyRect();
+ if (g_button1_flag == 0) {
+ enemyCircle();
+ }
+ } else if (level == 1) {///generate enemies at level 1
enemyRect();
- enemyCircle();
- } else if (level == 1) {
+ if (g_button1_flag == 0) {
+ enemyCircle();
+ }
+ } else if (level == 2) {///generate enemies at level 2
+
+ enemyRocket();
+ if (g_button1_flag == 0) {
+ enemyCircle();
+ }
+ } else if (level == 3) {///generate enemies at level 3
+
+ enemyRect();
+ if (g_button1_flag == 0) {
+ enemyCircle();
+ }
+ } else if (level == 4) {///generate enemies at level 4
enemyRect();
- enemyCircle();
- } else if (level == 2) {
-
+ if (g_button1_flag == 0) {
+ enemyCircle();
+ }
+ } else if (level == 5) {///generate enemies at level 5
enemyRocket();
- } else if (level == 3) {
-
- enemyRect();
+ if (g_button1_flag == 0) {
+ enemyCircle();
+ }
+ } else if (level == 6) {///generate enemies at level 6
+ enemyRocket();
+ if (g_button1_flag == 0) {
+ enemyCircle();
+ }
+ } else if (level == 7) {///generate enemies at level 7
+ enemyRocket();
enemyCircle();
- } else if (level == 4) {
-
- enemyRect();
- enemyCircle();
- } else if (level == 5) {
- enemyRocket();
- } else if (level == 6) {
- enemyRocket();
- enemyCircle();
+ if (g_button1_flag == 1) {///if button1 is pressed don't allow to use at level 7
+ g_button1_flag = 0;
+ lcd.clear();
+ lcd.printString("Can't use now!",0,0);
+ lcd.refresh();
+ wait(1);
+ lcd.clear();
+ }
}
- else if (level == 7) {
- enemyRocket();
- enemyCircle();
- }
+
}
void enemyRect()
{
- ///generate rect shape enemy
+ ///generate rectangular shape enemy
lcd.drawRect(rectX,rectY,5,4,1);
- if (g_button1_flag == 0) {
- rectX = rectX + rand()%4 - 2;
- rectY++; ///enemy moving towards hero
+
+ rectX = rectX + rand()%4 - 2;
+ rectY++; ///enemy moving towards hero
- if (rectY > 50) {
- rectY = 0;
- }
- if (rectX > 75 || rectX < 25) {
- rectX = 40+rand()%6 - 3;
- }
+ if (rectY > 50) {///set boundaries for enemy position
+ rectY = 0;
+ }
+ if (rectX > 75 || rectX < 25) {
+ rectX = 40+rand()%6 - 3;
}
}
-void enemyRocket() {
+void enemyRocket() { ///generate a "rocket-like" enemy
lcd.drawRect(rectX,rectY,2,7,1);
lcd.drawCircle(rectX+1,rectY+1,2,1);
lcd.drawLine(rectX-2,rectY+2,rectX,rectY-1,1);
lcd.drawLine(rectX+2,rectY+2,rectX,rectY-1,1);
-
- if (g_button1_flag == 0) {
- rectX = rectX + rand()%4 - 2;
- rectY++; ///enemy moving towards hero
+
+ rectX = rectX + rand()%4 - 2;
+ rectY++; ///enemy moving towards hero
+
+ if (rectY > 50) {///set boundaries for position of enemy
+ rectY = 0;
+ }
+ if (rectX > 75 || rectX < 10) {
+ rectX = 40+rand()%6 - 3;
+ }
+}
- if (rectY > 50) {
- rectY = 0;
- }
- if (rectX > 75 || rectX < 10) {
- rectX = 40+rand()%6 - 3;
- }
+void enemyCircle()
+{
+ ///generate circle shape enemy
+ lcd.drawCircle(circleX,circleY,4,1);
+ circleY = circleY + rand() %4 - 2;
+
+ if (circleY <= 10) { ///set the boundaries of the enemy
+ circleY = 20;
}
+ if (circleY >= 35) {
+ circleY = 35;
+ }
+ if (circleX > 84) {
+ circleX = 0;
+ }
+ circleX++; ///enemy moving towards hero
}
void hero()
{
///cotrol hero
- if (joystick.direction == RIGHT) {
+ if (joystick.direction == RIGHT) { ///joystick direction points to the right
heroX--;
- } else if (joystick.direction == LEFT) {
+ } else if (joystick.direction == LEFT) {///joystick direction points to the left
heroX++;
} else {
heroX = heroX;
}
- if (joystick.direction == UP) {
+ if (joystick.direction == UP) {///joystick direction points to the top
heroY--;
- } else if (joystick.direction == DOWN) {
+ } else if (joystick.direction == DOWN) {///joystick direction points down
heroY++;
} else {
- heroY = heroY;
+ heroY = heroY; ///joystick is centred
}
- if (joystick.direction == UP_LEFT) {
+ if (joystick.direction == UP_LEFT) { ///joystick direction points up and left
heroY--;
heroX++;
- } else if (joystick.direction == UP_RIGHT) {
+ } else if (joystick.direction == UP_RIGHT) { ///joystick direction points up and right
heroY--;
heroX--;
- } else if (joystick.direction == DOWN_RIGHT) {
+ } else if (joystick.direction == DOWN_RIGHT) {///joystick direction points down and right
heroY++;
heroX--;
- } else if (joystick.direction == DOWN_LEFT) {
+ } else if (joystick.direction == DOWN_LEFT) {///joystick direction points down and left
heroY++;
heroX++;
}
@@ -253,39 +279,20 @@
}
if (heroY < -45) { ///if hero has reached the top of the screen
heroY = 0; ///hero goes back to the bottom of the screen
- level++; ///level increases by 1
+ g_button1_flag = 0;
+ level++; ///increase level of the game
}
if (heroY >= 0) {/// hero cannot go to previous level
heroY = 0;
}
///draw hero
- lcd.drawLine(40+heroX, 47+heroY, 48+heroX, 43+heroY,1);
+ lcd.drawLine(40+heroX, 47+heroY, 48+heroX, 43+heroY,1); ///variables heroX and heroY are used to control the direction of the hero
lcd.drawLine(40+heroX, 43+heroY,48+heroX, 47+heroY,1);
lcd.drawLine(44+heroX, 45+heroY,44+heroX, 41+heroY,1);
lcd.drawCircle(44+heroX, 39+heroY,2,0);
}
-void enemyCircle()
-{
- ///generate circle shape enemy
- lcd.drawCircle(circleX,circleY,4,1);
- circleY = circleY + rand() %4 - 2;
-
- if (g_button1_flag == 0) {
- if (circleY <= 10) {
- circleY = 20;
- }
- if (circleY >= 35) {
- circleY = 35;
- }
- if (circleX > 84) {
- circleX = 0;
- }
- circleX++; ///enemy moving towards hero
- }
-}
-
void init_game()
{
///initialise game
@@ -300,42 +307,47 @@
lcd.printString("Treasure Hunt!",1,3);
lcd.refresh();
//timeout.attach(&timeout_isr,3);
- //sleep();
- wait(3);
+ // sleep();
+ wait(3); ///small delay prints welcome message
lcd.clear();
}
void guidance()
{
- /// show arrow to act as guidance towards the treasure
- if (level < 7) { ///check level of difficulty
-
- lcd.drawLine(42,0,42,4,1);
+ if (level < 7) {
lcd.drawLine(42,0,40,2,1);
lcd.drawLine(42,0,44,2,1);
- } else if (level == 7) {
+ lcd.drawLine(42,0,42,3,1);
+ }
+ /// function acts as guidance towards the treasure
+ else if (level == 7) {
lcd.printString("F",42,0); /// print the treasure icon
} else if (level == 8) {
-
+
+ timer.stop(); ///stop timer
+ timer.reset();
+ float win_time = timer.read();///value reads the time taken to win the game
+ char win[80]; ///create an array of chars
+ sprintf(win,"Time:%.2f sec",win_time); ///create string
ticker.detach();
- game_ticker.attach(&game_timer_isr,0.2);
+ game_ticker.attach(&game_timer_isr,0.2);
lcd.clear();
lcd.printString("Well done!",0,0);
lcd.refresh();
wait(2);
lcd.clear();
- lcd.printString("You 're a WINNER!",0,0);
- wait(2);
+ lcd.printString(win,0,0); ///print the time taken to win the game on screen
+ wait(3);
lcd.clear();
- lcd.printString("Play again!",0,0);
+ lcd.printString("Play again!",0,0); ///provide play again option
lcd.drawCircle(70,4,2,1);
lcd.refresh();
g_button_flag = 0;
while(1) {
- if (g_button1_flag) {
-
+ if (g_button1_flag) { ///if button1 is pressed
+ ///reset
g_button1_flag = 0;
level = 0;
lcd.clear();
@@ -352,7 +364,8 @@
{
/// place obstacles in the screen
/// as level difficulty increases, more obstacles are added
- if (level == 0) {
+
+ if (level == 0) { ///obstacles are located in the ground and they change from one level to another
lcd.drawRect(10,15,2,2,1);
lcd.drawRect(74,15,2,2,1);
@@ -364,11 +377,11 @@
lcd.drawRect(74,28,2,2,1);
} else if (level == 2) {
- lcd.drawCircle(37,25,5,0);
- lcd.drawCircle(47,25,5,0);
- lcd.drawCircle(42,11,3,1);
- lcd.drawCircle(37,25,3,1);
- lcd.drawCircle(47,25,3,1);
+ lcd.drawCircle(25,25,5,0);
+ lcd.drawCircle(65,25,5,0);
+ lcd.drawCircle(45,11,3,1);
+ lcd.drawCircle(25,25,3,1);
+ lcd.drawCircle(65,25,3,1);
lcd.drawRect(80,2,2,42,1);
lcd.drawRect(2,2,2,42,1);
@@ -384,7 +397,7 @@
lcd.drawRect(52,30,2,2,1);
} else if (level == 4) {
- lcd.drawRect(5+rand() %4 - 2 ,12+rand() %4 - 2,2,2,1);
+ lcd.drawRect(5+rand() %4 - 2 ,12+rand() %4 - 2,2,2,1); ///make obstacles moveable by adding a small random variance in position
lcd.drawRect(79 + rand() %4 - 2,12 + rand() %4 - 2,2,2,1);
lcd.drawRect(5+ rand() %4 - 2,30+rand() %4 - 2 ,2,2,1);
lcd.drawRect(79 + rand() %4 - 2,30+rand() %4 - 2,2,2,1);
@@ -526,10 +539,10 @@
option++;
break;
}
- if (option < 0) {
+ if (option < 0) { /// if the last (down) option is set for selection and user presses joystick down, selector moves at the top
option = 2;
}
- if (option > 2) {
+ if (option > 2) { /// if the first (up) option is set for selection and user presses joystick up, selector moves at the bottom
option = 0;
}
@@ -564,24 +577,24 @@
lcd.printString("Game speed",0,0); ///print settings menu
lcd.printString("Lcd:Inverse",0,1);
lcd.printString("Sound:ON",0,2);
- lcd.printString("Back",0,3);
+ lcd.printString("Back",0,4);
} else {
lcd.printString("Game speed",0,0); ///print settings menu
lcd.printString("Lcd:Inverse",0,1);
lcd.printString("Sound:OFF",0,2);
- lcd.printString("Back",0,3);
+ lcd.printString("Back",0,4);
}
} else {
if (sound) {
lcd.printString("Game speed",0,0); ///print settings menu
lcd.printString("Lcd:Normal",0,1);
lcd.printString("Sound:ON",0,2);
- lcd.printString("Back",0,3);
+ lcd.printString("Back",0,4);
} else {
lcd.printString("Game speed",0,0); ///print settings menu
lcd.printString("Lcd:Normal",0,1);
lcd.printString("Sound:OFF",0,2);
- lcd.printString("Back",0,3);
+ lcd.printString("Back",0,4);
}
}
switch (joystick.direction) {
@@ -610,7 +623,7 @@
} else if (option == 2) {
lcd.drawCircle(70,20,2,1);
} else {
- lcd.drawCircle(35,27,2,1);
+ lcd.drawCircle(35,36,2,1);
}
if (g_button_flag) { ///if button is pressed
g_button_flag = 0; ///reset button
@@ -624,20 +637,20 @@
updateJoystick();
lcd.clear();
if (speed == 0) {
- lcd.printString("Slow!",0,0); ///print game speed menu
+ lcd.printString("Slow<",0,0); ///print game speed menu
lcd.printString("Normal",0,1);
lcd.printString("Fast",0,2);
- lcd.printString("Back",0,3);
+ lcd.printString("Back",0,4);
} else if (speed == 1) {
- lcd.printString("Slow",0,0); ///print game speed menu
- lcd.printString("Normal!",0,1);
+ lcd.printString("Slow",0,0); //print game speed menu
+ lcd.printString("Normal<",0,1);
lcd.printString("Fast",0,2);
- lcd.printString("Back",0,3);
+ lcd.printString("Back",0,4);
} else if (speed == 2) {
- lcd.printString("Slow",0,0); ///print game speed menu
+ lcd.printString("Slow",0,0); //print game speed menu
lcd.printString("Normal",0,1);
- lcd.printString("Fast!",0,2);
- lcd.printString("Back",0,3);
+ lcd.printString("Fast<",0,2);
+ lcd.printString("Back",0,4);
}
switch (joystick.direction) {
@@ -665,20 +678,20 @@
} else if (option == 2) {
lcd.drawCircle(35,20,2,1);
} else {
- lcd.drawCircle(35,27,2,1);
+ lcd.drawCircle(35,36,2,1);
}
if (g_button_flag) {
g_button_flag = 0;
if (option == 0) {
- game_speed = 0.1;
+ game_speed = 0.1; ///slow
speed = 0;
} else if (option == 1) {
- game_speed = 0.05;
+ game_speed = 0.05; ///normal
speed = 1;
} else if (option == 2) {
- game_speed = 0.04;
+ game_speed = 0.04; ///fast
speed = 2;
} else if (option == 3) {
break;
@@ -699,10 +712,13 @@
sound =! sound;
- if (sound)
- buzzer.write(0.5);
- else
+ if (sound) {
+ //buzzer.write(0.5);
+ // buzzer.period(1/4000);
+ }
+ else {
buzzer.write(0.0);
+ }
// buzzer.period(1/400);
} else if(option == 3) { ///go back to main menu
break;
@@ -753,19 +769,19 @@
void checkOverlap()
{
- for (int i=40+heroX; i<50+heroX; i++) {
+ for (int i=40+heroX; i<50+heroX; i++) { ///loop follows the hero and checks for overlap around him
for (int j=35+heroY; j<48+heroY; j++) {
- int check = intersection(i,j);
+ int check = intersection(i,j); ///int gets number of pixels around the hero
//lcd.setPixel(i,j);
char bit[50];
sprintf(bit,"Pixels: %d",check);
- for(int i = 40; i < 50; i++) {
+ for(int i = 40; i < 50; i++) { ///provides safety if hero is in default position he doesn't get killed by enemies
for (int j = 35; j < 47; j++) {
- if (lcd.getPixel(i,j) && check > 6) {
+ if (lcd.getPixel(i,j) && check > 6) { ///6 is the offset of the neigbours, as hero has his own neighbours pixels
check = 6;
}
}
@@ -773,14 +789,20 @@
if (check > 7) {
tries--;
//if tries
-
- lcd.printString("BANG!",0,0);
+ lcd.printString("BANG!",0,0); ///Bang message is displayed when overlap has occured
+ if (sound) {
+ buzzer.write(0.5);
+ //buzzer.pulsewidth(0.9);
+ } else {
+ buzzer.write(0.0);
+ }
lcd.refresh();
wait(2);
lcd.clear();
if (tries == 2) {
-
+
+ g_button1_flag = 0;
lcd.printString("Ready.",20,1);
lcd.refresh();
wait(0.5);
@@ -790,29 +812,33 @@
lcd.printString("Ready...",20,1);
lcd.refresh();
wait(1);
- lcd.printString("GO!",31,2);
+ lcd.printString("GO!",31,3);
lcd.refresh();
wait(1);
lcd.clear();
fsm_state = 1; ///2 lives left
} else if (tries == 1) {
-
+
+ g_button1_flag = 0;
lcd.clear();
lcd.printString("Last Chance!",10,2);
lcd.refresh();
wait(1);
fsm_state = 2; //1 life left
} else if (tries == 0) {
-
+
+ g_button1_flag = 0;
fsm_state = 3;
led_output=fsm[fsm_state];
lcd.clear();
lcd.printString("Game Over!",10,2);
+ timer.stop();
+ timer.reset();
lcd.refresh();
wait(2);
ticker.detach();
- game_ticker.attach(&game_timer_isr,0.2);
+ game_ticker.attach(&game_timer_isr,0.2); ///attach a slower ticker to save power while not playing
lcd.clear();
lcd.printString("Play again!",0,0);
lcd.drawCircle(70,4,2,1);
@@ -820,19 +846,21 @@
g_button_flag = 0;
while(1) {
- if (g_button1_flag) {
+ if (g_button1_flag) { ///if button1 is pressed
- g_button1_flag = 0;
- level = 0;
+ g_button1_flag = 0; ///reset button1 flag
+ level = 0; ///reset parameters
tries = 3;
fsm_state = 0;
led_output=fsm[fsm_state];
+ buzzer.write(0.0);
lcd.clear();
+ ///reset values
heroX = 0;
heroY = 0;
rectY = 0;
circleX = 0;
- main();
+ main(); ///call main
}
sleep();
}
@@ -843,25 +871,15 @@
rectY = 0;
circleX = 0;
led_output=fsm[fsm_state];
+ buzzer.write(0.0);
}
}
}
}
-void error()
-{
- /// display error message
- while (1) {
-
- lcd.printString("Error!",0,0);
- r_led = 0;
- wait(0.2);
- r_led = 1;
- wait(0.2);
- }
-}
+