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map.html
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<!DOCTYPE html>
<html>
<head>
<title>world map editor</title>
<style>
canvas {
position: fixed;
left: 0;
top: 0;
width: 100%;
height: 100%;
cursor: crosshair;
z-index: 0;
}
#notice {
position: absolute;
left: 0;
top: 0;
color: red;
font: 13px monospace;
z-index: 1;
}
#download {
display: none;
}
</style>
</head>
<body>
<canvas id=screen width=512 height=256></canvas>
<div id=notice></div>
<a id=download href="" download="cave.s">download</a>
<script>
// Cheesily added after I finished to bootstrap localstorage.
var cannedMap = '111001111111111111111111111111111111111111111111111111111111111111111111111111111110111111100101111111111111101111011111111111111100001111111111111111101101101000000000100000000000110011101000001000110011100011100101101101111111101000110001110000111111110111000000000000000000000000000000111111100000110010011010011000111000001000000000011000010010010001110000011101010101000100011001100001111111111111111100111111111000000110010010000100000000111111111000010010000000000000100110011000110011010101010001000110111000000000000000000000001111100000111100110010101001111110101100100001111111111000000100001001100010011110010001000100100000101111101111111111111111111111111110000111000110101011011000001011100000000000000011111111011111001000001100110000010001001111001011111001111110001111100111001111111100111100100010000110011110110001111111111110000000000100011010010110001111001100010000000000111000001001000000010000010000110001100111000110101001001111101000111100000000111111111111110010100111111010010001001100100000001110000000000010000000000000000000001101111000001000111011010010101001000001000001100000011000101000010000110100001001011001100011111111111111111111111111111111111001001111111010010000110000001000000110110100001000000010000111000001000110000010110110011100111100100000110011001100110101101011001011010110001111101000011010111111111111110000001100000001110010010000000000101101110000011110000010000000000000000000000000011000000000001010000010001000100000000000000000001111100000100101110100111000011010000100100111101000100111111111111111111111110111111111111110100111000110100010110000011110011101111111111001011101011000100000101000001001111011001000000000000000000011111101000000000000001010000011001000110110111000111100000000000000111111010000111111111010100110111110111011000000000000000000000001010001111011001100100111000111111000101100011011101000100110000000000100011000000000101011101111101111111111111111111111111111010111111110011110001011000110000000000011001000111111111001111111101111010000001000011000111111111000000000000000000000000000000100000000000000000100100110001111111101100011011011001000001111111111111100000111000111000000001111111111111111111111111111111101111111111111111111110010000111100001000100110100000000000000001111111111110001111111111111100001100000000000000000000000000000010000000111011000010000011001110011110100101000000111111100000011001111111110011011111111111110011101111111111100000000001000001101100001100100000000001111000110001111111010010011100000011000000000001101110010000000111111100111010011011000111000011011111110011110000000001000100000011101000000110000100110111100100111110000000001001000000000000011111101100100100100000001111110110000001101111100001011011101000001011000001100110001001100001111111111100000000000000000000000000000011001000000000000000000001001111110001101111111111111111100000101000011010000110010010000011111100000000000000111110000000000001110011111111111111111111100000001100010000011100000000011110001010001100100011000100100000000001110000000000011111110000000000011100000011100000000000000011110010000000000010001011100000111100111010011001100000011000000000000110000000001111111110000000001111111100011111111111110000011110101010001000001010111111000100011110100110010000000111000000100001100000000011111111100000000111110011000000111111110111100011001011110110011110100000011000000111001101100100010011111011011100111110001111111111111000000111111100011111001100110000110001100010111111111101100011100100111001100110011000001111111111111111111111111111111111111111001111111111100000000000000000001001110001101100000000001111100010001100010011000110111011111111111111111111111111111111111111111111111111111111111111111111111000110000011011111111011000000010101100110001110011100011111111111111111111111111111111111111111111111111111100000000000000000011111000001110111011011111111111111000011111111101111010101101111111111111111111111111111111111111111111111111001111111111111100000000111111101010100000000111111111100111101001001110100010001111111111111111111111111111111111111111111111110011100000000001011111111010000010000000000011111110111101110000111000101100000001111111111111101110000000111001111101111111101100011100010001110010011000000111100000000001111111000101010101111110000011100000011111111111111001000110000100000100000000011011000001101101110001100000111111110000000001110110100000010101100011110000111000000111111111111110000010000000000000000000000010111100000011000011110000111111101100001000000000100000000101010010111110001110110001101111111111100001000100101011011001100000101111111111111000000000111111111001000010000000000000000001010001100111111111111110010011111111111000010010101010100101010100001011111111111111111111111011101100010001100010000000010001010100111101011111110000001100111111111110000100011001001101000101000010110001111100000000000000110001000000011001110000000100010101011001000111111000111110011111111111100000100000000000000000000000001110010110000000000000000100000000000110011111000001000100010111010001110100010000000001111111111000000111111111111111111110000011111100000110000000000000000000000001110010111011010011110100010100010100000110000001110111111110000000000000000000000000000000011100000001110000000000000000000000010100100111110100000100100101000001010001100000010001111111100000000000000000100010001000000101100001111100000000000000000000000001001001010001001000000100010000010100011000000011111111111000000001000000101000101010000001001001111111000000000000000000000000010010000000100111100001100100000101101011000000001111111110000000011011001110100101001000010010011001110001100000000000011000000100101111111111111000011101000000011011001100000011111111100000010000010000000000000000000111101111011110111001000100000111000000001001001000110101000100110000011111111011001111111111111011000111000000111010001101101101111001111111101110110011101011110000000111000000000000000011111110000000000000110011111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111';
function matEqual(a, b) {
if (a.length != b.length)
return false;
if (a.length && a[0].length != b[0].length)
return false;
for (var j = 0; j < a.length; j++) {
if (a[j].length != b[j].length)
return false;
for (var i = 0; i < a[j].length; i++) {
if (a[j][i] != b[j][i])
return false;
}
}
return true;
}
var world = (function() {
var MAX_WIDTH = 128;
var MAX_HEIGHT = 48;
var bitmap = [];
return {
init: function() {
if (!this.restore())
this.clearRect([0, 0, MAX_WIDTH - 1, MAX_HEIGHT - 1]);
},
restore: function() {
var savedBitmap = localStorage.getItem('bitmap') || cannedMap;
if (!savedBitmap)// || savedBitmap.length != MAX_HEIGHT * MAX_WIDTH)
return false;
var bits = savedBitmap.split('');
for (var j = 0, s = 0; j < MAX_HEIGHT; j++, s += MAX_WIDTH) {
bitmap[j] = bits.slice(s, s + MAX_WIDTH).map(function(elem) {
return parseInt(elem, 10);
});
}
return true;
},
save: function() {
localStorage.setItem('bitmap', bitmap.map(function(row) {
return row.join('')
}).join(''));
},
check: function(testBitmap) {
return matEqual(bitmap, testBitmap);
},
compress: function() {
var data = [];
var emit = function(value, count) {
data.push(((value & 15) << 4) | (count - 1));
rowSize++;
};
for (var j = 0; j < MAX_HEIGHT; j++) {
var v = 0;
var lastV = null;
var count = 1;
for (var i = 0; i < MAX_WIDTH; i += 4) {
v = 0;
for (var b = 0; b < 4; b++)
v = (v << 1) | (this.at(i + b, j));
if (v == lastV && count < 16) {
count++;
} else if (i != 0) {
emit(lastV, count);
count = 1;
}
lastV = v;
}
emit(v, count);
}
return data;
},
uncompress: function(data) {
var rows = [];
var i = 0;
var j = 0;
var expand = function(value, count) {
for (var k = 0; k < count; k++) {
var tmp = value;
for (var b = 0; b < 4; b++) {
rows[j][i++] = (tmp & 128) ? 1 : 0;
tmp = tmp << 1;
}
}
};
for (var offs = 0; offs < data.length; offs++) {
if (i == 0)
rows[j] = [];
var count = 1 + (data[offs] & 15);
expand(data[offs], count);
if (i == MAX_WIDTH) {
i = 0;
j++;
}
}
return rows;
},
compress2: function() {
var data = [];
var emit = function(value, count) {
if (count > 1) {
data.push(128 | (count - 1));
data.push(value);
} else if (count == 1) {
data.push(value);
}
};
for (var j = 0; j < MAX_HEIGHT; j++) {
var v = 0;
var lastV = 0;
var count = 1;
for (var i = 0; i < MAX_WIDTH; i += 7) {
v = 0;
for (var b = 0; b < 7; b++)
v = (v << 1) | (this.at(i + b, j));
if (v == lastV) {
count++;
} else if (i != 0) {
emit(lastV, count);
count = 1;
}
lastV = v;
}
emit(v, count);
}
return data;
},
uncompress2: function(data) {
var rows = [];
var i = 0;
var j = 0;
var expand = function(value, count) {
for (var k = 0; k < count; k++) {
var tmp = value;
for (var b = 0; b < 7; b++) {
if (i < MAX_WIDTH)
rows[j][i++] = (tmp & 64) ? 1 : 0;
tmp = tmp << 1;
}
}
};
for (var offs = 0; offs < data.length; offs++) {
if (i == 0)
rows[j] = [];
var count = 1;
if (data[offs] & 128) {
count = 1 + (data[offs] & 127); offs++;
}
expand(data[offs], count);
if (i == MAX_WIDTH) {
i = 0;
j++;
}
}
return rows;
},
encode: function() {
var data = [];
for (var j = 0; j < MAX_HEIGHT; j++) {
for (var i = 0; i < MAX_WIDTH; i += 8) {
var v = 0;
for (var b = 0; b < 8; b++) {
v = (v << 1) | (bitmap[j][i + b] & 1);
}
data.push(v);
}
}
return data;
},
decode: function(data) {
var rows = [];
var offs = 0;
for (var j = 0; j < MAX_HEIGHT; j++) {
rows[j] = [];
for (var i = 0; i < MAX_WIDTH; i += 8, offs++) {
var v = data[offs];
for (var b = 0; b < 8; b++) {
rows[j][i + b] = (v & 128) ? 1 : 0;
v = v << 1;
}
}
}
return rows;
},
at: function(i, j) {
return this.valid(i, j) ? bitmap[j][i] : 0;
},
inMagicByte: function(i, j) {
var startCol = i&~7;
return this.valid(startCol, j) && this.valid(startCol + 7, j) &&
bitmap[j].slice(startCol, startCol + 8).join('') == '10001001';
},
valid: function(i, j) {
return i >= 0 && j >= 0 && i < MAX_WIDTH && j < MAX_HEIGHT;
},
forRegion: function(rect, fn) {
for (var j = Math.min(rect[1], rect[3]);
j <= Math.max(rect[1], rect[3]); j++) {
for (var i = Math.min(rect[0], rect[2]);
i <= Math.max(rect[0], rect[2]); i++) {
fn(i, j);
}
}
},
fillRect: function(rect) {
this.forRegion(rect, this.set.bind(this));
},
clearRect: function(rect) {
this.forRegion(rect, this.reset.bind(this));
},
set: function(i, j) {
if (this.valid(i, j)) {
bitmap[j][i] = 1;
}
},
reset: function(i, j) {
if (this.valid(i, j)) {
bitmap[j][i] = 0;
}
}
};
})();
var screen = (function(canvas) {
var SCREEN_COLS = 32;
var SCREEN_ROWS = 16;
var BLOCK_HEIGHT = canvas.height / SCREEN_ROWS;
var BLOCK_WIDTH = canvas.width / SCREEN_COLS;
var startCol = 0;
var startRow = 0;
var ctx = canvas.getContext('2d');
var buttonDown = 0;
canvas.addEventListener('contextmenu', function(e) {
e.preventDefault();
});
canvas.addEventListener('mousedown', function(e) {
buttonDown = e.which;
});
canvas.addEventListener('mouseup', function() {
buttonDown = 0;
});
canvas.addEventListener('mouseout', function() {
buttonDown = 0;
});
return {
rect: null,
lastI: null,
lastJ: null,
lastButtonDown: null,
mouse: function(handler) {
var getPos = function(e) {
var pw = canvas.clientWidth / SCREEN_COLS;
var ph = canvas.clientHeight / SCREEN_ROWS;
return {i: startCol + Math.floor(e.pageX / pw),
j: startRow + Math.floor(e.pageY / ph)};
};
canvas.addEventListener('mousemove', function(e) {
var pos = getPos(e);
handler(pos.i, pos.j, buttonDown)
});
var that = this;
canvas.addEventListener('mousedown', function(e) {
var pos = getPos(e);
if (!(that.lastI == pos.i && that.lastJ == pos.j &&
that.lastButtonDown == buttonDown)) {
handler(pos.i, pos.j, buttonDown)
}
that.lastI = pos.i;
that.lastJ = pos.j;
that.lastButtonDown = buttonDown;
});
},
pan: function(world, delta) {
var newStartCol = startCol + delta[0];
var newStartRow = startRow + delta[1];
var endCol = newStartCol + SCREEN_COLS - 1;
var endRow = newStartRow + SCREEN_ROWS - 1;
if (world.valid(newStartCol, newStartRow) &&
world.valid(endCol, endRow)) {
startCol = newStartCol;
startRow = newStartRow;
this.draw(world);
}
},
draw: function(world) {
for (var j = 0, y = 0; j < SCREEN_ROWS; j++, y += BLOCK_HEIGHT) {
for (var i = 0, x = 0; i < SCREEN_COLS; i++, x += BLOCK_WIDTH) {
var value = world.at(i + startCol, j + startRow);
if (!value)
ctx.fillStyle = '#000';
else if (world.inMagicByte(i + startCol, j + startRow))
ctx.fillStyle = '#f00';
else
ctx.fillStyle = '#fff';
ctx.fillRect(x, y, BLOCK_WIDTH, BLOCK_HEIGHT);
}
}
if (this.rect) {
ctx.beginPath();
ctx.strokeStyle = '#090';
var sx = BLOCK_WIDTH * startCol;
var sy = BLOCK_HEIGHT * startRow;
ctx.moveTo(BLOCK_WIDTH * this.rect[0] - sx,
BLOCK_HEIGHT * this.rect[1] - sy);
ctx.lineTo(BLOCK_WIDTH * (this.rect[2] + 1) - sx,
BLOCK_HEIGHT * this.rect[1] - sy);
ctx.lineTo(BLOCK_WIDTH * (this.rect[2] + 1) - sx,
BLOCK_HEIGHT * (this.rect[3] + 1) - sy);
ctx.lineTo(BLOCK_WIDTH * this.rect[0] - sx,
BLOCK_HEIGHT * (this.rect[3] + 1) - sy);
ctx.lineTo(BLOCK_WIDTH * this.rect[0] - sx,
BLOCK_HEIGHT * this.rect[1] - sy);
ctx.stroke();
}
ctx.beginPath();
ctx.strokeStyle = '#f00';
var guideY = BLOCK_HEIGHT * ((128 - startRow) % SCREEN_ROWS);
ctx.moveTo(0, guideY);
ctx.lineTo(canvas.width, guideY);
var guideX = BLOCK_WIDTH * ((128 - startCol) % SCREEN_COLS);
ctx.moveTo(guideX, 0);
ctx.lineTo(guideX, canvas.height);
ctx.stroke();
}
};
})(document.getElementById('screen'));
var download = document.getElementById('download');
var notice = document.getElementById('notice');
world.init();
screen.draw(world);
screen.mouse(function(i, j, button) {
var startRect = false;
if (button == 1) {
if (screen.rect) {
world.fillRect(screen.rect);
screen.rect = null;
} else {
world.set(i, j);
}
} else if (button == 2) {
startRect = true;
} else if (button == 3) {
if (screen.rect) {
world.clearRect(screen.rect);
screen.rect = null;
} else {
world.reset(i, j);
}
}
if (screen.rect || startRect) {
screen.rect = [screen.lastI == null ? i : screen.lastI,
screen.lastJ == null ? j : screen.lastJ, i, j];
}
screen.draw(world);
world.save();
var encoded = world.encode();
if (!world.check(world.decode(encoded))) {
notice.innerHTML = 'encoding error';
} else {
notice.innerHTML = encoded.length + 'B';
}
});
function hexasm(data) {
var out = '';
var offs = 0;
var writeLine = function(num) {
if (num == 0) return;
out += ' .byte ';
var bytes = [];
for (var j = 0; j < num; j++, offs++)
bytes[j] = '$' + data[offs].toString(16);
out += bytes.join(', ');
out += '\n';
};
for (var i = 0; i < Math.floor(data.length / 8); i++)
writeLine(8);
writeLine(data.length % 8);
return out;
}
document.addEventListener('keydown', (function(){
var dirs = {
// left, h
37: [-1, 0], 72: [-1, 0],
// right, l
39: [1, 0], 76: [1, 0],
// down, j
38: [0, -1], 75: [0, -1],
// up, k
40: [0, 1], 74: [0, 1],
// pgdn
34: [0, 8],
// pgup
33: [0, -8],
};
return function(e) {
if (e.keyCode in dirs)
screen.pan(world, dirs[e.keyCode]);
if (e.keyCode == 27) { // escape
screen.rect = null;
screen.draw(world);
} else if (e.keyCode == 68) { // d
download.href = 'data:text/plain,' +
encodeURIComponent(hexasm(world.encode()));
download.click();
}
};
})());
</script>
</body>
</html>