Ahmed Adamjee
Snake vs Block Game to be run upon K64F.
Diff: GameEngine/SnakevsBlock/SnakevsBlock.cpp
- Revision:
- 62:ebf6ecf8a6d5
- Parent:
- 61:f3c402bc2ad0
- Child:
- 63:205f0ca48473
--- a/GameEngine/SnakevsBlock/SnakevsBlock.cpp Tue Apr 30 08:32:30 2019 +0000
+++ b/GameEngine/SnakevsBlock/SnakevsBlock.cpp Tue Apr 30 14:53:38 2019 +0000
@@ -19,7 +19,9 @@
foodbuff = 0; //this makes the food fall at diffrent times when a particular level starts.
send_block_number = 0; //this is 0 when there is no collision, thus block number isn't remembered for next set (which would lead to empty blocks).
blockgap = 300; //this is the number of itterations the block will reccur after in the first level.
- for(int i=0; i<=14; i++) {b[i] = 1;} //makes all the snake beads move by default.
+ for(int i=0; i<=14; i++) {
+ b[i] = 1; //makes all the snake beads move by default.
+ }
SnakevsBlock::object_initialisations();
}
@@ -27,7 +29,9 @@
{
//This prepares the game for the next level by reseting certain variables.
foodbuff = 0;
- if(blockgap >= 50) {blockgap -= 10;} //to make progressive levels harder by making the blocks drop more frequently.
+ if(blockgap >= 50) {
+ blockgap -= 10; //to make progressive levels harder by making the blocks drop more frequently.
+ }
/*
//to clear all the memory buffer of the game object positions from the previous level.
for(int i = 0; i <=2 ; i++) {
@@ -60,32 +64,37 @@
}
device.get_values();
switch (g_mode) {
- case 1:
- _d = pad.get_direction(); //Obtains Direction pushed towards on Joystick.
- _mag = pad.get_mag(); //Obtains Magnitude of Joystick. REMOVE THIS LATER.
- break;
- case 2:
- angle = -device.get_roll_angle() - garbage;
- if (angle >= 6) {
- _d = E;
- for(int led = 4; led <= 6; led++) { pad.led(led,1); }
- }
- else if (angle <= -6) {
- _d = W;
- for(int led = 1; led <= 3; led++) { pad.led(led,1); }
- }
- else {
- _d = CENTRE;
- for(int led = 1; led <= 6; led++) { pad.led(led,0); }
- }
- break;
+ case 1:
+ _d = pad.get_direction(); //Obtains Direction pushed towards on Joystick.
+ _mag = pad.get_mag(); //Obtains Magnitude of Joystick. REMOVE THIS LATER.
+ break;
+ case 2:
+ angle = -device.get_roll_angle() - garbage;
+ if (angle >= 6) {
+ _d = E;
+ for(int led = 4; led <= 6; led++) {
+ pad.led(led,1);
+ }
+ } else if (angle <= -6) {
+ _d = W;
+ for(int led = 1; led <= 3; led++) {
+ pad.led(led,1);
+ }
+ } else {
+ _d = CENTRE;
+ for(int led = 1; led <= 6; led++) {
+ pad.led(led,0);
+ }
+ }
+ break;
}
//printf("%d",gm);
//printf("%f",angle);
//printf("%f",device.get_roll_angle());
}
-void SnakevsBlock::draw(N5110 &lcd, Gamepad &pad) {
+void SnakevsBlock::draw(N5110 &lcd, Gamepad &pad)
+{
_length = _l._getLength(); //saves the snake length into a private variable.
_s.draw(lcd, _length, level); //Draws the Snake. //Make these snake buffs relative to the snake drops which in turn relate to the game speed
if(foodbuff >= 0) {
@@ -103,29 +112,28 @@
}
//Code to print length on game screen.
_l.print_length_on_screen(lcd);
-}
+}
int SnakevsBlock::update(N5110 &lcd, Gamepad &pad, SDFileSystem &sd) //Updates objects on screen.
{
send_block_number = 0; //this is for the game to decide wether to remember the number on the block for the current itteration.
- //we dont need to remember if it has already gone past the screen.
+ //we dont need to remember if it has already gone past the screen.
CheckSnakeFoodCollision(pad); //Function checks for when the snake collides with it's food.
CheckSnakeBlockCollision(pad); //Function checks for when the snake collides with any of the blocks.
CheckSnakeBlockSidesCollision(pad); //Function checks for when the snake collides with any of the blocks' sides.
_s.update(_d, b); //_d is the direction of joystick and b controls the motion of a section of the snake relative to obstruction
_f.update();
_ff.update();
- _fff.update();
+ _fff.update();
_b.update(blocknum, blockgap, srn, send_block_number);
//_statset.read(sd); //to read the currently stored value.
if(_length == 0) {
_wl.GameOver(lcd,pad);
}
- if((pad.check_event(Gamepad::BACK_PRESSED))||(_length == 0)){ //Waits for Back button to be pressed.
+ if((pad.check_event(Gamepad::BACK_PRESSED))||(_length == 0)) { //Waits for Back button to be pressed.
back = 1;
SnakevsBlock::init();
- }
- else {
+ } else {
back = 0;
}
//printf("%d\n",_length);
@@ -144,7 +152,7 @@
// 81.000000 0.000000 top right
// 0.000000 0.000000 is top left
// 81.000000 45.000000 bottom right
- snakex = _s.get_pos().x; //this could be snake_pos[0].x or simply snake_pos[0] to represent both x&y but as it is used the most, it improves readability.
+ snakex = _s.get_pos().x; //this could be snake_pos[0].x or simply snake_pos[0] to represent both x&y but as it is used the most, it improves readability.
snakey = _s.get_pos().y; //this could be snake_pos[0].y or simply snake_pos[0] to represent both x&y but as it is used the most, it improves readability.
//printf("snakexy in GAME = %d %d \n", snakex, snakey);
//Obtains all required coordinates.
@@ -164,10 +172,11 @@
snake_pos[7] = _s.get_pos_before7(); //gets the position of the eight beed and saves in array.
snake_pos[8] = _s.get_pos_before8(); //gets the position of the ninth beed and saves in array.
snake_pos[9] = _s.get_pos_before9(); //gets the position of the last beed and saves in array.
-}
-
+}
+
-void SnakevsBlock::CheckSnakeFoodCollision(Gamepad &pad) {
+void SnakevsBlock::CheckSnakeFoodCollision(Gamepad &pad)
+{
//If statements check if the snake sprite has collided with any
//of the three food sprites, if so then the food location is reset and
//length of the snake is increased using the length variable.
@@ -176,11 +185,11 @@
for(int food_sr=0; food_sr<=2; food_sr++) { //this loop automatically detects which food we are interacting with.
if (
((snakey + y == food_pos[food_sr].y) ||
- (snakey + y == food_pos[food_sr].y + 1) ||
- (snakey + y == food_pos[food_sr].y + 2)) &&
+ (snakey + y == food_pos[food_sr].y + 1) ||
+ (snakey + y == food_pos[food_sr].y + 2)) &&
((snakex + x == food_pos[food_sr].x) ||
- (snakex + x == food_pos[food_sr].x + 1) ||
- (snakex + x == food_pos[food_sr].x + 2))
+ (snakex + x == food_pos[food_sr].x + 1) ||
+ (snakex + x == food_pos[food_sr].x + 2))
) {
//printf("snake feast working \n");
//audio feedback
@@ -196,8 +205,9 @@
_ff.set_pos(food_pos[1]);
_fff.set_pos(food_pos[2]);
}
-
-void SnakevsBlock::CheckSnakeBlockCollision(Gamepad &pad) {
+
+void SnakevsBlock::CheckSnakeBlockCollision(Gamepad &pad)
+{
//Obtains the numbers inside the block.
b_number = _b.get_number();
//If statements check if the snake sprite has collided with any
@@ -205,20 +215,21 @@
//the block has to move slower and come down after every 2/3 iterations(dependent on the snake size.(think about this)
for(int block=0; block<=83; block+=1) { //this loop automatically detects for each section of block and each combination of collision
if (((snakey == b_pos.y + 11)||
- (snakey == b_pos.y + 10)||
- (snakey == b_pos.y + 9)||
- (snakey == b_pos.y + 8))&&
- (snakex + 1 == b_pos.x + block)) {
+ (snakey == b_pos.y + 10)||
+ (snakey == b_pos.y + 9)||
+ (snakey == b_pos.y + 8))&&
+ (snakex + 1 == b_pos.x + block)) {
//the or for the block's y position is due to the fact the exact y co-ordinate might not be collided if the snake's length has increased in the same itteration.
//printf("snake collision working \n");
//audio feedback
- if(blocknum > 0) {b_pos.y = 0;} //change this to speed y = 0 when length = 10.
+ if(blocknum > 0) {
+ b_pos.y = 0; //change this to speed y = 0 when length = 10.
+ }
srn = CheckBlock(block); //this tells us which of the 5 blocks we are colliding with
blocknum = b_number[srn];
if((_length>=10)&&(b_number[srn]>0)) { //this makes the block stop moving down if it's length is more than 10 and still collides.
velocity = 0;
- }
- else {
+ } else {
velocity = 1;
}
ImplementCollision(pad);
@@ -226,25 +237,38 @@
}
}
}
-
-void SnakevsBlock::_set_velocity() {
+
+void SnakevsBlock::_set_velocity()
+{
_b.velocity.y = velocity;
_f.velocity.y = velocity;
_ff.velocity.y = velocity;
_fff.velocity.y = velocity;
}
-
-int SnakevsBlock::CheckBlock(int block) {
+
+int SnakevsBlock::CheckBlock(int block)
+{
int srn;
- if((block>=0)&&(block<=18)) {srn = 0;}
- if((block>=19)&&(block<=34)) {srn = 1;}
- if((block>=35)&&(block<=50)) {srn = 2;}
- if((block>=51)&&(block<=66)) {srn = 3;}
- if((block>=67)&&(block<=83)) {srn = 4;}
+ if((block>=0)&&(block<=18)) {
+ srn = 0;
+ }
+ if((block>=19)&&(block<=34)) {
+ srn = 1;
+ }
+ if((block>=35)&&(block<=50)) {
+ srn = 2;
+ }
+ if((block>=51)&&(block<=66)) {
+ srn = 3;
+ }
+ if((block>=67)&&(block<=83)) {
+ srn = 4;
+ }
return srn;
}
-
-void SnakevsBlock::ImplementCollision(Gamepad &pad) {
+
+void SnakevsBlock::ImplementCollision(Gamepad &pad)
+{
send_block_number = 1;
if(blocknum > 0) { // to make sure that snake doesn't decrease in _length if number on the block is less than 1;
_l.MinusLength();
@@ -258,45 +282,68 @@
{
//If statements check if the snake sprite has collided with any
//of the blocks' sides and then stop the snake moving in x axis
- int length = _length;
- if(_length>=10) {length = 10;} //to stop the snake length virtually at 10 when it goes past it.
-
for(int i=0; i<=9; i++) {
b[i] = 1;
}
for(int i=0; i<=9; i++) { //i checks for all possible collisions with the snake respective to it's length.
- for(int b_y_combination=0; b_y_combination<=10; b_y_combination++) {
- if (
- (snake_pos[i].y == b_pos.y + b_y_combination) ||
- (snake_pos[i].y + 1 == b_pos.y + b_y_combination) ||
- (snake_pos[i].y + 2 == b_pos.y + b_y_combination)) {
- for(int b_x_combination=2; b_x_combination<=82; b_x_combination+=16) {
- //For West side of walls
- if(
- ((snake_pos[i].x == b_pos.x + b_x_combination+2) || //W
- (snake_pos[i].x + 1 == b_x_combination+2))&&(_d != E)&&(length > i) //W
- ) {
- //code makes sure that the colliding part doesn't move in x axis.
- for(int snake_beed_num=0; snake_beed_num<=10; snake_beed_num++) {
- if(length == snake_beed_num + i) {
- b[snake_beed_num - 1] = 0;
- }
- }
- }
- //for East side of walls
- else if (
- ((snake_pos[i].x + 1 == b_x_combination) || //E
- (snake_pos[i].x + 2 == b_x_combination))&&(_d != W)&&(length > i) //E
- ) {
- //code makes sure that the colliding part doesn't move in x axis.
- for(int snake_beed_num=0; snake_beed_num<=10; snake_beed_num++) {
- if(length == snake_beed_num + i) {
- b[snake_beed_num - 1] = 0;
- }
- }
- }
- }
- }
+ SnakevsBlock::check_Collision_Y_axis(i); //checks if the snake and the block are at the same position in y axis.
+ }
+}
+
+void SnakevsBlock::check_Collision_Y_axis(int i) //i is the index of the snake beed and checks for all possible collisions with the snake respective to it's length.
+{
+ //This code checks if the snake and the block overlap in the Y axis.
+ for(int b_y_combination=0; b_y_combination<=10; b_y_combination++) {
+ if (
+ (snake_pos[i].y == b_pos.y + b_y_combination) ||
+ (snake_pos[i].y + 1 == b_pos.y + b_y_combination) ||
+ (snake_pos[i].y + 2 == b_pos.y + b_y_combination)) {
+
+ SnakevsBlock::check_Collision_X_axis(i); //checks if the snake and the block are at the same position in x axis.
+
+ }
+ }
+}
+
+void SnakevsBlock::check_Collision_X_axis(int i) //i is the index of the snake beed and checks for all possible collisions with the snake respective to it's length.
+{
+ for(int b_x_combination=2; b_x_combination<=82; b_x_combination+=16) {
+
+ SnakevsBlock::checkCollision_EastorWest(b_x_combination, i); //checks if the colliding wall is on east side or west side.
+ }
+}
+
+void SnakevsBlock::checkCollision_EastorWest(int b_x_combination, int i) //i checks for all possible collisions with the snake respective to it's length.
+{
+ //this makes the virtual length -> 10 for the side collision implementation because if the length is fifteen and the last beed collides, it still is the 10th beed
+ //on screen.
+ int length = _length;
+ if(_length>=10) {
+ length = 10; //to stop the snake length virtually at 10 when it goes past it.
+ }
+
+//For West side of walls
+ if(
+ ((snake_pos[i].x == b_pos.x + b_x_combination+2) || //W
+ (snake_pos[i].x + 1 == b_x_combination+2))&&(_d != E)&&(length > i) //W
+ ) {
+ SnakevsBlock::StopX_AxisMotion(length, i);
+ }
+ //for East side of walls
+ else if (
+ ((snake_pos[i].x + 1 == b_x_combination) || //E
+ (snake_pos[i].x + 2 == b_x_combination))&&(_d != W)&&(length > i) //E
+ ) {
+ SnakevsBlock::StopX_AxisMotion(length, i);
+ }
+}
+
+void SnakevsBlock::StopX_AxisMotion(int length, int i) //i is the index of the snake beed and checks for all possible collisions with the snake respective to it's length.
+{
+ //code makes sure that the colliding part doesn't move in x axis.
+ for(int snake_beed_num=0; snake_beed_num<=10; snake_beed_num++) {
+ if(length == snake_beed_num + i) {
+ b[snake_beed_num - 1] = 0;
}
}
}
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