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if(typeof require !== "undefined") { var jaws = require("./core.js"); }
var jaws = (function(jaws) {
/**
* @class Create and access tilebased 2D maps with very fast access of invidual tiles. "Field Summary" contains options for the TileMap()-constructor.
*
* @property {array} cell_size Size of each cell in tilemap, defaults to [32,32]
* @property {array} size Size of tilemap, defaults to [100,100]
* @property {function} sortFunction Function used by sortCells() to sort cells, defaults to no sorting
*
* @example
* var tile_map = new TileMap({size: [10, 10], cell_size: [16,16]})
* var sprite = new jaws.Sprite({x: 40, y: 40})
* var sprite2 = new jaws.Sprite({x: 41, y: 41})
* tile_map.push(sprite)
*
* tile_map.at(10,10) // []
* tile_map.at(40,40) // [sprite]
* tile_map.cell(0,0) // []
* tile_map.cell(1,1) // [sprite]
*
*/
jaws.TileMap = function TileMap(options) {
if( !(this instanceof arguments.callee) ) return new arguments.callee( options );
jaws.parseOptions(this, options, this.default_options);
this.cells = new Array(this.size[0]);
for(var col=0; col < this.size[0]; col++) {
this.cells[col] = new Array(this.size[1]);
for(var row=0; row < this.size[1]; row++) {
this.cells[col][row] = [] // populate each cell with an empty array
}
}
}
jaws.TileMap.prototype.default_options = {
cell_size: [32,32],
size: [100,100],
sortFunction: null
}
/** Clear all cells in tile map */
jaws.TileMap.prototype.clear = function() {
for(var col=0; col < this.size[0]; col++) {
for(var row=0; row < this.size[1]; row++) {
this.cells[col][row] = [];
}
}
}
/** Sort arrays in each cell in tile map according to sorter-function (see Array.sort) */
jaws.TileMap.prototype.sortCells = function(sortFunction) {
for(var col=0; col < this.size[0]; col++) {
for(var row=0; row < this.size[1]; row++) {
this.cells[col][row].sort( sortFunction )
}
}
}
/**
* Push obj (or array of objs) into our cell-grid.
*
* Tries to read obj.x and obj.y to calculate what cell to occopy
*/
jaws.TileMap.prototype.push = function(obj) {
var that = this;
if(obj.forEach) {
obj.forEach( function(item) { that.push(item) } );
return obj;
}
if(obj.rect) {
return this.pushAsRect(obj, obj.rect());
}
else {
var col = parseInt(obj.x / this.cell_size[0]);
var row = parseInt(obj.y / this.cell_size[1]);
return this.pushToCell(col, row, obj);
}
}
/**
* Push objects into tilemap.
* Disregard height and width and only use x/y when calculating cell-position
*/
jaws.TileMap.prototype.pushAsPoint = function(obj) {
if(Array.isArray(obj)) {
for(var i=0; i < obj.length; i++) { this.pushAsPoint(obj[i]) }
return obj;
}
else {
var col = parseInt(obj.x / this.cell_size[0]);
var row = parseInt(obj.y / this.cell_size[1]);
return this.pushToCell(col, row, obj);
}
}
/** push obj into cells touched by rect */
jaws.TileMap.prototype.pushAsRect = function(obj, rect) {
var from_col = parseInt(rect.x / this.cell_size[0]);
var to_col = parseInt((rect.right-1) / this.cell_size[0]); // -1
//jaws.log("rect.right: " + rect.right + " from/to col: " + from_col + " " + to_col, true)
for(var col = from_col; col <= to_col; col++) {
var from_row = parseInt(rect.y / this.cell_size[1]);
var to_row = parseInt((rect.bottom-1) / this.cell_size[1]); // -1
//jaws.log("rect.bottom " + rect.bottom + " from/to row: " + from_row + " " + to_row, true)
for(var row = from_row; row <= to_row; row++) {
// console.log("pushAtRect() col/row: " + col + "/" + row + " - " + this.cells[col][row])
this.pushToCell(col, row, obj);
}
}
return obj
}
/**
* Push obj to a specific cell specified by col and row
* If cell is already occupied we create an array and push to that
*/
jaws.TileMap.prototype.pushToCell = function(col, row, obj) {
this.cells[col][row].push(obj);
if(this.sortFunction) this.cells[col][row].sort(this.sortFunction);
return this
}
//
// READERS
//
/** Get objects in cell that exists at coordinates x / y */
jaws.TileMap.prototype.at = function(x, y) {
var col = parseInt(x / this.cell_size[0]);
var row = parseInt(y / this.cell_size[1]);
// console.log("at() col/row: " + col + "/" + row)
return this.cells[col][row];
}
/** Returns occupants of all cells touched by 'rect' */
jaws.TileMap.prototype.atRect = function(rect) {
var objects = [];
var items;
try {
var from_col = parseInt(rect.x / this.cell_size[0]);
if (from_col < 0) {
from_col = 0;
}
var to_col = parseInt(rect.right / this.cell_size[0]);
if (to_col >= this.size[0]) {
to_col = this.size[0] - 1;
}
var from_row = parseInt(rect.y / this.cell_size[1]);
if (from_row < 0) {
from_row = 0;
}
var to_row = parseInt(rect.bottom / this.cell_size[1]);
if (to_row >= this.size[1]) {
to_row = this.size[1] - 1;
}
for(var col = from_col; col <= to_col; col++) {
for(var row = from_row; row <= to_row; row++) {
this.cells[col][row].forEach( function(item, total) {
if(objects.indexOf(item) == -1) { objects.push(item) }
})
}
}
}
catch(e) {
// ... problems
}
return objects
}
/** Returns all objects in tile map */
jaws.TileMap.prototype.all = function() {
var all = [];
for(var col=0; col < this.size[0]; col++) {
for(var row=0; row < this.size[1]; row++) {
this.cells[col][row].forEach( function(element, total) {
all.push(element)
});
}
}
return all
}
/** Get objects in cell at col / row */
jaws.TileMap.prototype.cell = function(col, row) {
return this.cells[col][row]
}
/** Debugstring for TileMap() */
jaws.TileMap.prototype.toString = function() { return "[TileMap " + this.size[0] + " cols, " + this.size[1] + " rows]" }
return jaws;
})(jaws || {});
// Support CommonJS require()
if(typeof module !== "undefined" && ('exports' in module)) { module.exports = jaws.TileMap }
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