OWOP Copy tool

/*
Very useful copy tool, allows you to easily copy and paste art. This makes moving art a lot easier.

By yours truly, DayDun.

P.S. only admins can use it lol.
*/

OWOP.tool.addToolObject(new OWOP.tool.class("Copy", OWOP.cursors.select, OWOP.fx.player.NONE, OWOP.RANK.NONE, function (tool) {
    function drawText(ctx, str, x, y, centered) {
        ctx.strokeStyle = "#000000", ctx.fillStyle = "#FFFFFF", ctx.lineWidth = 2.5, ctx.globalAlpha = 0.5;
        if (centered) {
            x -= ctx.measureText(str).width >> 1;
        }
        ctx.strokeText(str, x, y);
        ctx.globalAlpha = 1;
        ctx.fillText(str, x, y);
    }

    tool.setFxRenderer(function (fx, ctx, time) {
        if (!fx.extra.isLocalPlayer) return 1;
        var x = fx.extra.player.x;
        var y = fx.extra.player.y;
        var fxx = (Math.floor(x / 16) - OWOP.camera.x) * OWOP.camera.zoom;
        var fxy = (Math.floor(y / 16) - OWOP.camera.y) * OWOP.camera.zoom;
        var oldlinew = ctx.lineWidth;
        ctx.lineWidth = 1;
        if (tool.extra.end) {
            var s = tool.extra.start;
            var e = tool.extra.end;
            var x = (s[0] - OWOP.camera.x) * OWOP.camera.zoom + 0.5;
            var y = (s[1] - OWOP.camera.y) * OWOP.camera.zoom + 0.5;
            var w = e[0] - s[0];
            var h = e[1] - s[1];
            ctx.beginPath();
            ctx.rect(x, y, w * OWOP.camera.zoom, h * OWOP.camera.zoom);
            ctx.globalAlpha = 1;
            ctx.strokeStyle = "#FFFFFF";
            ctx.stroke();
            ctx.setLineDash([3, 4]);
            ctx.strokeStyle = "#000000";
            ctx.stroke();
            ctx.globalAlpha = 0.25 + Math.sin(time / 500) / 4;
            ctx.fillStyle = OWOP.renderer.patterns.unloaded;
            ctx.fill();
            ctx.setLineDash([]);
            var oldfont = ctx.font;
            ctx.font = "16px sans-serif";
            var txt = (!tool.extra.clicking ? "Right click to copy " : "") + '(' + Math.abs(w) + 'x' + Math.abs(h) + ')';
            var txtx = window.innerWidth >> 1;
            var txty = window.innerHeight >> 1;
            txtx = Math.max(x, Math.min(txtx, x + w * OWOP.camera.zoom));
            txty = Math.max(y, Math.min(txty, y + h * OWOP.camera.zoom));

            drawText(ctx, txt, txtx, txty, true);
            ctx.font = oldfont;
            ctx.lineWidth = oldlinew;
            return 0;
        } else {
            ctx.beginPath();
            ctx.moveTo(0, fxy + 0.5);
            ctx.lineTo(window.innerWidth, fxy + 0.5);
            ctx.moveTo(fxx + 0.5, 0);
            ctx.lineTo(fxx + 0.5, window.innerHeight);

            //ctx.lineWidth = 1;
            ctx.globalAlpha = 1;
            ctx.strokeStyle = "#FFFFFF";
            ctx.stroke();
            ctx.setLineDash([3]);
            ctx.strokeStyle = "#000000";
            ctx.stroke();

            ctx.setLineDash([]);
            ctx.lineWidth = oldlinew;
            return 1;
        }
    });

    tool.extra.start = null;
    tool.extra.end = null;
    tool.extra.clicking = false;

    tool.setEvent('mousedown', function (mouse, event) {
        var s = tool.extra.start;
        var e = tool.extra.end;
        var isInside = function isInside() {
            return mouse.tileX >= s[0] && mouse.tileX < e[0] && mouse.tileY >= s[1] && mouse.tileY < e[1];
        };
        if (mouse.buttons === 1 && !tool.extra.end) {
            tool.extra.start = [mouse.tileX, mouse.tileY];
            tool.extra.clicking = true;
            tool.setEvent('mousemove', function (mouse, event) {
                if (tool.extra.start && mouse.buttons === 1) {
                    tool.extra.end = [mouse.tileX, mouse.tileY];
                    return 1;
                }
            });
            var finish = function finish() {
                tool.setEvent('mousemove mouseup deselect', null);
                tool.extra.clicking = false;
                var s = tool.extra.start;
                var e = tool.extra.end;
                if (e) {
                    if (s[0] === e[0] || s[1] === e[1]) {
                        tool.extra.start = null;
                        tool.extra.end = null;
                    }
                    if (s[0] > e[0]) {
                        var tmp = e[0];
                        e[0] = s[0];
                        s[0] = tmp;
                    }
                    if (s[1] > e[1]) {
                        var tmp = e[1];
                        e[1] = s[1];
                        s[1] = tmp;
                    }
                }
                OWOP.renderer.render(OWOP.renderer.rendertype.FX);
            };
            tool.setEvent('deselect', finish);
            tool.setEvent('mouseup', function (mouse, event) {
                if (!(mouse.buttons & 1)) {
                    finish();
                }
            });
        } else if (mouse.buttons === 1 && tool.extra.end) {
            if (isInside()) {
                var offx = mouse.tileX;
                var offy = mouse.tileY;
                tool.setEvent('mousemove', function (mouse, event) {
                    var dx = mouse.tileX - offx;
                    var dy = mouse.tileY - offy;
                    tool.extra.start = [s[0] + dx, s[1] + dy];
                    tool.extra.end = [e[0] + dx, e[1] + dy];
                });
                var end = function end() {
                    tool.setEvent('mouseup deselect mousemove', null);
                };
                tool.setEvent('deselect', end);
                tool.setEvent('mouseup', function (mouse, event) {
                    if (!(mouse.buttons & 1)) {
                        end();
                    }
                });
            } else {
                tool.extra.start = null;
                tool.extra.end = null;
            }
        } else if (mouse.buttons === 2 && tool.extra.end && isInside()) {
            tool.extra.start = null;
            tool.extra.end = null;
            var x = s[0];
            var y = s[1];
            var w = e[0] - s[0];
            var h = e[1] - s[1];
            var c = document.createElement('canvas');
            c.width = w;
            c.height = h;
            var ctx = c.getContext('2d');
            var d = ctx.createImageData(w, h);
            for (var i = y; i < y + h; i++) {
                for (var j = x; j < x + w; j++) {
                    var pix = OWOP.world.getPixel(j, i);
                    if (!pix) continue;
                    d.data[4 * ((i - y) * w + (j - x))] = pix[0];
                    d.data[4 * ((i - y) * w + (j - x)) + 1] = pix[1];
                    d.data[4 * ((i - y) * w + (j - x)) + 2] = pix[2];
                    d.data[4 * ((i - y) * w + (j - x)) + 3] = 255;
                }
            }
            ctx.putImageData(d, 0, 0);
            var paste = OWOP.tool.allTools.paste;
            paste.extra.canvas = c;
            var oldSelect = paste.events.select;
            paste.events.select = function() {
                paste.events.select = oldSelect;
            };
            OWOP.player.tool = "paste";
        }
    });
}));