j"1PtSxTXHQVd5PgzCpnBuEsjV1gBs9MhXLUMº//backgroundGenerator.js
/**
Generates the backgrounds for a level.
Code by Rob Kleffner, 2011
*/
Mario.BackgroundGenerator = function(width, height, distant, type) {
this.Width = width;
this.Height = height;
this.Distant = distant;
this.Type = type;
};
Mario.BackgroundGenerator.prototype = {
SetValues: function(width, height, distant, type) {
this.Width = width;
this.Height = height;
this.Distant = distant;
this.Type = type;
},
CreateLevel: function() {
var level = new Mario.Level(this.Width, this.Height);
switch (this.Type) {
case Mario.LevelType.Overground:
this.GenerateOverground(level);
break;
case Mario.LevelType.Underground:
this.GenerateUnderground(level);
break;
case Mario.LevelType.Castle:
this.GenerateCastle(level);
break;
}
return level;
},
GenerateOverground: function(level) {
var range = this.Distant ? 4 : 6;
var offs = this.Distant ? 2 : 1;
var oh = Math.floor(Math.random() * range) + offs;
var h = Math.floor(Math.random() * range) + offs;
var x = 0, y = 0, h0 = 0, h1 = 0, s = 2;
for (x = 0; x < this.Width; x++) {
oh = h;
while (oh === h) {
h = Math.floor(Math.random() * range) + offs;
}
for (y = 0; y < this.Height; y++) {
h0 = (oh < h) ? oh : h;
h1 = (oh < h) ? h : oh;
s = 2;
if (y < h0) {
if (this.Distant){
s = 2;
if (y < 2) { s = y; }
level.SetBlock(x, y, 4 + s * 8);
} else {
level.SetBlock(x, y, 5);
}
} else if (y === h0) {
s = h0 === h ? 0 : 1;
s += this.Distant ? 2 : 0;
level.SetBlock(x, y, s);
} else if (y === h1) {
s = h0 === h ? 0 : 1;
s += this.Distant ? 2 : 0;
level.SetBlock(x, y, s + 16);
} else {
s = (y > h1) ? 1 : 0;
if (h0 === oh) { s = 1 - s; }
s += this.Distant ? 2 : 0;
level.SetBlock(x, y, s + 8);
}
}
}
},
GenerateUnderground: function(level) {
var x = 0, y = 0, t = 0, yy = 0;
if (this.Distant) {
var tt = 0;
for (x = 0; x < this.Width; x++) {
if (Math.random() < 0.75) { tt = 1 - tt; }
for (y = 0; y < this.Height; y++) {
t = tt;
yy = y - 2;
if (yy < 0 || yy > 4) {
yy = 2;
t = 0;
}
level.SetBlock(x, y, (4 + t + (3 + yy) * 8));
}
}
} else {
for (x = 0; x < this.Width; x++) {
for (y = 0; y < this.Height; y++) {
t = x % 2;
yy = y - 1;
if (yy < 0 || yy > 7) {
yy = 7;
t = 0;
}
if (t === 0 && yy > 1 && yy < 5) {
t = -1;
yy = 0;
}
level.SetBlock(x, y, (6 + t + yy * 8));
}
}
}
},
GenerateCastle: function(level) {
var x = 0, y = 0, t = 0, yy = 0;
if (this.Distant) {
for (x = 0; x < this.Width; x++) {
for (y = 0; y < this.Height; y++) {
t = x % 2;
yy = y - 1;
if (yy > 2 && yy < 5) {
yy = 2;
} else if (yy >= 5) {
yy -= 2;
}
if (yy < 0) {
t = 0;
yy = 5;
} else if (yy > 4) {
t = 1;
yy = 5;
} else if (t < 1 && yy === 3) {
t = 0;
yy = 3;
} else if (t < 1 && yy > 0 && yy < 3) {
t = 0;
yy = 2;
}
level.SetBlock(x, y, (1 + t + (yy + 4) * 8));
}
}
} else {
for (x = 0; x < this.Width; x++) {
for (y = 0; y < this.Height; y++) {
t = x % 3;
yy = y - 1;
if (yy > 2 && yy < 5) {
yy = 2;
} else if (yy >= 5) {
yy -= 2;
}
if (yy < 0) {
t = 1;
yy = 5;
} else if (yy > 4) {
t = 2;
yy = 5;
} else if (t < 2 && yy === 4) {
t = 2;
yy = 4;
} else if (t < 2 && yy > 0 && yy < 4) {
t = 4;
yy = -3;
}
level.SetBlock(x, y, (1 + t + (yy + 3) * 8));
}
}
}
}
};
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