lib.js Example File
maze/lib.js//global variables var labyrinth = null; var dimension = 24; var cellDimension = 13; var won; var objectArray = null; var sec = 0.0 //Allocate labyrinth arrays and create labyrinth and way reflected in the labyrinth array function createLabyrinth() { won = false; //create the labyrinth matrix labyrinth = null; labyrinth = new Array(dimension); for (var x = 0; x < dimension; x++ ){ labyrinth[x] = new Array(dimension); for (var y = 0; y < dimension; y++ ){ labyrinth[x][y] = 0; } } createWay(); createLab(); } //Create a way where the mouse can reach the cheese function createWay() { //Create rnd way to have at least one solution //A way square is marked as a 2 in the labyrinth array var x = 0; var y = 0; var ox = x; var oy = y; labyrinth[0][0] = 2; while (x < dimension && y < dimension){ var rnd = Math.floor(Math.random()*5); if (Math.floor(Math.random()*2) == 1){ if (rnd == 0) x--; if (rnd >= 1) x++; if (x < 0) x++; if (x >= dimension){ x = ox; break; } } else { if (rnd == 0) y--; if (rnd >= 1) y++; if (y < 0) y++; if (y >= dimension){ y = oy; break; } } /*avoid to have [2]2| |2|2|*/ if (x < (dimension - 1) && y < (dimension - 1)){ if (labyrinth[x + 1][y] == 2 && labyrinth[x][y + 1] == 2 && labyrinth[x + 1][y + 1] == 2){ y = oy; x = ox; continue; } } /*avoid to have |2[2] |2|2|*/ if (x > 0 && y < (dimension - 1)){ if (labyrinth[x - 1][y] == 2 && labyrinth[x][y + 1] == 2 && labyrinth[x - 1][y + 1] == 2){ y = oy; x = ox; continue; } } /*avoid to have |2|2| [2]2|*/ if (x < (dimension - 1) && y > 0){ if (labyrinth[x + 1][y] == 2 && labyrinth[x][y - 1] == 2 && labyrinth[x + 1][y - 1] == 2){ y = oy; x = ox; continue; } } /*avoid to have |2|2| |2[2]*/ if (x > 0 && y > 0){ if (labyrinth[x - 1][y] == 2 && labyrinth[x][y - 1] == 2 && labyrinth[x - 1][y - 1] == 2){ y = oy; x = ox; continue; } } labyrinth[x][y] = 2; ox = x; oy = y; } //finish way while (x < (dimension - 1)){ labyrinth[x][y] = 2; x++; } while (y < (dimension - 1)){ labyrinth[x][y] = 2; y++; } } //Create the labyrinth with rnd values function createLab() { //A wall square is marked as a 1 in the labyrinth array //Not a wall square is marked as a 0 in the labyrinth array //The Cheese square is marked as a 3 in the labyrinth array //The start is marked as a -1 in the labyrinth array for (var x = 0; x < dimension; x++ ){ var rnd = 0; for (var y = 0; y < dimension; y++){ //But don't overwrite the way if (labyrinth[x][y] != 2){ var rnd = Math.floor(Math.random()*2); var xy = 0; var xxy = 0; var xyy = 0; var xxyy = 0; if (x > 0 && y > 0){ xy = labyrinth[x - 1][y - 1]; if (xy == 2) xy = 0; xyy = labyrinth[x - 1][y]; if (xyy == 2) xyy = 0; xxy = labyrinth[x][y - 1]; if (xxy == 2) xxy = 0; xxyy = rnd; if (xxyy == 2) xxyy = 0; //avoid to have to many |0|1| or |1|0| [xy ][xxy ] // |1[0] |0[1] [xyy ][xxyy] if (xyy == xxy && xy == xxyy && xy != xxy){ if (rnd == 1) rnd = 0; else rnd = 1; } //avoid to have to many |1|1| or |0|0| // |1[1] |0[0] if (xy == xxy && xxy == xxyy && xxyy == xyy){ if (rnd == 1) rnd = 0; else rnd = 1; } } else if (x == 0 && y > 0){ xy = labyrinth[x][y - 1]; if (xy == 2) xy = 0; xyy = rnd; if (xyy == 2) xyy = 0; xxy = labyrinth[x + 1][y - 1]; if (xxy == 2) xxy = 0; xxyy = labyrinth[x + 1][y]; if (xxyy == 2) xxyy = 0; //avoid to have to many |1|1| or |0|0| // |1[1] |0[0] if (xy == xxy && xxy == xxyy && xxyy == xyy){ if (rnd == 1) rnd = 0; else rnd = 1; } //avoid to have to many |0|1| or |1|0| [xy ][xxy ] // |1[0] |0[1] [xyy ][xxyy] if (xyy == xxy && xy == xxyy && xy != xxy){ if (rnd == 1) rnd = 0; else rnd = 1; } } labyrinth[x][y] = rnd; } } } //set start and end labyrinth[0][0] = -1; labyrinth[0][1] = 0; labyrinth[1][0] = 0; labyrinth[1][1] = 0; labyrinth[dimension - 2][dimension - 2] = 0; labyrinth[dimension - 2][dimension - 1] = 0; labyrinth[dimension - 1][dimension - 2] = 0; labyrinth[dimension - 1][dimension - 1] = 3; } //Function that checks if the mouse can be moved in x and y function canMove(x, y) { //Check if movement is allowed var xcenter = x + (cellDimension / 2); var ycenter = y + (cellDimension / 2); //try to get the index var idx = Math.floor(xcenter / cellDimension); var idy = Math.floor(ycenter / cellDimension); var dx = xcenter - (idx * cellDimension + ( cellDimension / 2 )); var dy = ycenter - (idy * cellDimension + ( cellDimension / 2 )); if (dx > 0){ if (labyrinth[idx][idy] == 1) return false; } if (dx < 0){ if (labyrinth[idx][idy] == 1) return false; } if (dy > 0){ if (labyrinth[idx][idy] == 1) return false; } if (dy < 0){ if (labyrinth[idx][idy] == 1) return false; } //check if won if (idx == (dimension - 1) && idy == (dimension - 1)) won = true; return true; } //Function that prints out the labyrith array values in the console function printLab() { //for debug purposes print out lab n console var iy = 0; for (var y = 0; y < dimension; y++ ){ var line = ""; for (var x = 0; x < dimension; x++ ){ line += labyrinth[x][y]; } console.log(line); } }
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