var snake = new Array;
var board = new Array;
var links = new Array;
var scheduledDirections = new Array;
var numRows = 1;
var numColumns = 1;
var linkComponent = Qt.createComponent("content/Link.qml");
var cookieComponent = Qt.createComponent("content/Cookie.qml");
var cookie;
var linksToGrow = 0;
var linksToDie = 0;
var waitForCookie = 0;
var growType = 0;
var skullMovementsBeforeDirectionChange = 0;
function rand(n)
{
return (Math.floor(Math.random() * n));
}
function scheduleDirection(dir)
{
direction = dir;
if(scheduledDirections[scheduledDirections.length-1]!=direction)
scheduledDirections.push(direction);
}
function startNewGame()
{
if (state == "starting")
return;
if (activeGame) {
endGame();
startNewGameTimer.running = true;
state = "";
return;
}
state = "starting";
numRows = numRowsAvailable;
numColumns = numColumnsAvailable;
board = new Array(numRows * numColumns);
snake = new Array;
scheduledDirections = new Array;
growType = 0;
skull.z = numRows * numColumns + 1;
for (var i = 0; i < numRows * numColumns; ++i) {
if (i < links.length) {
var link = links[i];
link.spawned = false;
link.dying = false;
} else {
if(linkComponent.status != Component.Ready) {
if(linkComponent.status == Component.Error)
console.log(linkComponent.errorString());
else
console.log("Still loading linkComponent");
continue;
}
var link = linkComponent.createObject(playfield);
link.z = numRows * numColumns + 1 - i;
link.type = i == 0 ? 2 : 0;
link.spawned = false;
link.dying = false;
links.push(link);
}
}
head = links[0];
snake.push(head);
head.row = numRows/2 -1;
head.column = numColumns/2 -1;
head.spawned = true;
linksToGrow = 5;
linksToDie = 0;
waitForCookie = 5;
score = 0;
startHeartbeatTimer.running = true;
}
function endGame()
{
activeGame = false;
for(var i in snake)
snake[i].dying = true;
if (cookie) {
cookie.dying = true;
cookie = 0;
}
lastScore = score;
highScores.saveScore(lastScore);
state = "";
}
function move() {
if (!head)
return;
var dir = direction;
if (scheduledDirections.length) {
dir = scheduledDirections.shift();
}
if (state == "starting") {
var turn = (dir - headDirection);
head.rotation += turn == -3 ? 1 : (turn == 3 ? -1 : turn );
headDirection = dir;
return;
}
var row = head.row;
var column = head.column;
if (dir == 0) {
row = row - 1;
} else if (dir == 1) {
column = column + 1
} else if (dir == 2) {
row = row + 1;
} else if (dir == 3) {
column = column - 1;
}
if (row < 0 || row >= numRows
|| column < 0 || column >= numColumns
|| (row == skull.row && column == skull.column)
|| !isFree(row, column)) {
var turn = (dir - headDirection);
head.rotation += turn == -3 ? 1 : (turn == 3 ? -1 : turn );
headDirection = dir;
endGame();
return;
}
var newLink;
if (linksToGrow > 0) {
--linksToGrow;
newLink = links[snake.length];
newLink.spawned = false;
newLink.rotation = snake[snake.length-1].rotation;
newLink.type = growType;
newLink.dying = false;
snake.push(newLink);
} else {
var lastLink = snake[snake.length-1];
board[lastLink.row * numColumns + lastLink.column] = undefined;
}
if (waitForCookie > 0) {
if (--waitForCookie == 0)
createCookie(cookie? (cookie.value+1) : 1);
}
for (var i = snake.length-1; i > 0; --i) {
snake[i].row = snake[i-1].row;
snake[i].column = snake[i-1].column;
snake[i].rotation = snake[i-1].rotation;
}
if (newLink) {
newLink.spawned = true;
}
head.row = row;
head.column = column;
board[row * numColumns + column] = head;
var turn = (dir - headDirection);
head.rotation += turn == -3 ? 1 : (turn == 3 ? -1 : turn );
headDirection = dir;
var value = testCookie(row, column);
if (value > 0) {
linksToGrow += value;
score += value;
}
}
function isFree(row, column)
{
return board[row * numColumns + column] == undefined;
}
function isHead(row, column)
{
return head.column == column && head.row == row;
}
function testCookie(row, column)
{
if (cookie && !cookie.dying && cookie.row == row && cookie.column == column) {
var value = cookie.value;
waitForCookie = value;
growType = snake[snake.length-1].type == 1 ? 0 : 1;
cookie.dying = true;
cookie.z = numRows * numColumns + 2;
return value;
}
return 0;
}
function moveSkull()
{
if (linksToDie > 0) {
--linksToDie;
var link = snake.pop();
link.dying = true;
board[link.row * numColumns + link.column] = undefined;
if (score > 0)
--score;
if (snake.length == 0) {
endGame();
return;
}
}
var row = skull.row;
var column = skull.column;
if (isHead(row, column)) {
endGame();
return;
}
row += skull.verticalMovement;
column += skull.horizontalMovement;
var attempts = 4;
while (skullMovementsBeforeDirectionChange == 0 || row < 0 || row >= numRows
|| column < 0 || column >= numColumns
|| (!isFree(row, column) && !isHead(row, column))) {
var d = rand(8);
skull.verticalMovement = 0;
skull.horizontalMovement = 0;
skullMovementsBeforeDirectionChange = rand(20)+1;
if (d == 0) {
skull.verticalMovement = -1
} else if (d == 1) {
skull.horizontalMovement = -1;
} else if (d == 2) {
skull.verticalMovement = 1
} else if (d == 3){
skull.horizontalMovement = 1;
} else if (cookie) {
var rd = cookie.row - skull.row;
var rc = cookie.column - skull.column;
if (Math.abs(rd) > Math.abs(rc)) {
skull.verticalMovement = rd > 0 ? 1 : -1;
skullMovementsBeforeDirectionChange = Math.abs(rd);
} else {
skull.horizontalMovement= rc > 0 ? 1 : -1;
skullMovementsBeforeDirectionChange = Math.abs(rc);
}
}
row = skull.row + skull.verticalMovement;
column = skull.column + skull.horizontalMovement;
if (--attempts == 0)
return;
}
skull.row = row;
skull.column = column;
--skullMovementsBeforeDirectionChange;
var value = testCookie(row, column);
if (value > 0)
linksToDie += value/2;
if (isHead(row, column))
endGame();
}
function createCookie(value) {
if (numRows * numColumns - snake.length < 10)
return;
var column = rand(numColumns);
var row = rand(numRows);
while (!isFree(row, column)) {
column++;
if (column == numColumns) {
column = 0;
row++;
if (row == numRows)
row = 0;
}
}
if(cookieComponent.status != Component.Ready) {
if(cookieComponent.status == Component.Error)
console.log(cookieComponent.errorString());
else
console.log("Still loading cookieComponent");
return;
}
cookie = cookieComponent.createObject(head.parent);
cookie.value = value;
cookie.row = row;
cookie.column = column;
}