uberpong/dev/lib/weltmeister/tile-select.js

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ig.module(
'weltmeister.tile-select'
)
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.defines(function(){ "use strict";
wm.TileSelect = ig.Class.extend({
pos: {x:0, y:0},
layer: null,
selectionBegin: null,
init: function( layer ) {
this.layer = layer;
},
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getCurrentTile: function() {
var b = this.layer.brush;
if( b.length == 1 && b[0].length == 1 ) {
return b[0][0] - 1;
}
else {
return -1;
}
},
setPosition: function( x, y ) {
this.selectionBegin = null;
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var tile = this.getCurrentTile();
this.pos.x =
Math.floor( x / this.layer.tilesize ) * this.layer.tilesize
- Math.floor( tile * this.layer.tilesize ) % this.layer.tiles.width;
this.pos.y =
Math.floor( y / this.layer.tilesize ) * this.layer.tilesize
- Math.floor( tile * this.layer.tilesize / this.layer.tiles.width ) * this.layer.tilesize
- (tile == -1 ? this.layer.tilesize : 0);
this.pos.x = this.pos.x.limit( 0, ig.system.width - this.layer.tiles.width - (ig.system.width % this.layer.tilesize) );
this.pos.y = this.pos.y.limit( 0, ig.system.height - this.layer.tiles.height - (ig.system.height % this.layer.tilesize) );
},
beginSelecting: function( x, y ) {
this.selectionBegin = {x:x, y:y};
},
endSelecting: function( x, y ) {
var r = this.getSelectionRect( x, y);
var mw = Math.floor( this.layer.tiles.width / this.layer.tilesize );
var mh = Math.floor( this.layer.tiles.height / this.layer.tilesize );
var brush = [];
for( var ty = r.y; ty < r.y+r.h; ty++ ) {
var row = [];
for( var tx = r.x; tx < r.x+r.w; tx++ ) {
if( tx < 0 || ty < 0 || tx >= mw || ty >= mh) {
row.push( 0 );
}
else {
row.push( ty * Math.floor(this.layer.tiles.width / this.layer.tilesize) + tx + 1 );
}
}
brush.push( row );
}
this.selectionBegin = null;
return brush;
},
getSelectionRect: function( x, y ) {
var sx = this.selectionBegin ? this.selectionBegin.x : x,
sy = this.selectionBegin ? this.selectionBegin.y : y;
var
txb = Math.floor( (sx - this.pos.x) / this.layer.tilesize ),
tyb = Math.floor( (sy - this.pos.y) / this.layer.tilesize ),
txe = Math.floor( (x - this.pos.x) / this.layer.tilesize ),
tye = Math.floor( (y - this.pos.y) / this.layer.tilesize );
return {
x: Math.min( txb, txe ),
y: Math.min( tyb, tye ),
w: Math.abs( txb - txe) + 1,
h: Math.abs( tyb - tye) + 1
}
},
draw: function() {
ig.system.clear( "rgba(0,0,0,0.8)" );
if( !this.layer.tiles.loaded ) {
return;
}
// Tileset
ig.system.context.lineWidth = 1;
ig.system.context.strokeStyle = wm.config.colors.secondary;
ig.system.context.fillStyle = wm.config.colors.clear;
ig.system.context.fillRect(
this.pos.x * ig.system.scale,
this.pos.y * ig.system.scale,
this.layer.tiles.width * ig.system.scale,
this.layer.tiles.height * ig.system.scale
);
ig.system.context.strokeRect(
this.pos.x * ig.system.scale - 0.5,
this.pos.y * ig.system.scale - 0.5,
this.layer.tiles.width * ig.system.scale + 1,
this.layer.tiles.height * ig.system.scale + 1
);
this.layer.tiles.draw( this.pos.x, this.pos.y );
// Selected Tile
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var tile = this.getCurrentTile();
var tx = Math.floor( tile * this.layer.tilesize ) % this.layer.tiles.width + this.pos.x;
var ty =
Math.floor( tile * this.layer.tilesize / this.layer.tiles.width )
* this.layer.tilesize + this.pos.y
+ (tile == -1 ? this.layer.tilesize : 0);
ig.system.context.lineWidth = 1;
ig.system.context.strokeStyle = wm.config.colors.highlight;
ig.system.context.strokeRect(
tx * ig.system.scale - 0.5,
ty * ig.system.scale - 0.5,
this.layer.tilesize * ig.system.scale + 1,
this.layer.tilesize * ig.system.scale + 1
);
},
drawCursor: function( x, y ) {
var cx = Math.floor( x / this.layer.tilesize ) * this.layer.tilesize;
var cy = Math.floor( y / this.layer.tilesize ) * this.layer.tilesize;
var r = this.getSelectionRect( x, y);
ig.system.context.lineWidth = 1;
ig.system.context.strokeStyle = wm.config.colors.selection;
ig.system.context.strokeRect(
(r.x * this.layer.tilesize + this.pos.x) * ig.system.scale - 0.5,
(r.y * this.layer.tilesize + this.pos.y) * ig.system.scale - 0.5,
r.w * this.layer.tilesize * ig.system.scale + 1,
r.h * this.layer.tilesize * ig.system.scale + 1
);
}
});
});