Area Erase Tool

OWOP.tool.addToolObject(new OWOP.tool.class("Area Erase", OWOP.cursors.selectprotect, OWOP.fx.player.NONE, OWOP.RANK.ADMIN, 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.round(x / 256) * 16 - OWOP.camera.x) * OWOP.camera.zoom;
        var fxy = (Math.round(y / 256) * 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] * 16 - OWOP.camera.x) * OWOP.camera.zoom + 0.5;
            var y = (s[1] * 16 - OWOP.camera.y) * OWOP.camera.zoom + 0.5;
            var rw = e[0] - s[0];
            var rh = e[1] - s[1];
            var w = rw * OWOP.camera.zoom * 16;
            var h = rh * OWOP.camera.zoom * 16;
            ctx.beginPath();
            ctx.rect(x, y, w, h);
            ctx.globalAlpha = 1;
            ctx.strokeStyle = "#FFFFFF";
            ctx.stroke();
            ctx.setLineDash([3, 4]);
            ctx.strokeStyle = "#000000";
            ctx.stroke();
            if (tool.extra.isSure) {
                ctx.globalAlpha = 0.6;
                ctx.fillStyle = "#00EE00";
                ctx.fill();
            }
            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.isSure ? "Click again to confirm. " : !tool.extra.clicking ? "Click to erase. " : "") + '(' + Math.abs(rw) + 'x' + Math.abs(rh) + ')';
            var txtx = window.innerWidth >> 1;
            var txty = window.innerHeight >> 1;
            txtx = Math.max(x, Math.min(txtx, x + w));
            txty = Math.max(y, Math.min(txty, y + h));

            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.extra.isSure = false;

    var timeout = null;

    var sure = function sure() {
        if (tool.extra.isSure) {
            clearTimeout(timeout);
            timeout = null;
            tool.extra.isSure = false;
            return true;
        }
        tool.extra.isSure = true;
        setTimeout(function () {
            tool.extra.isSure = false;
            timeout = null;
        }, 1000);
        return false;
    };

    tool.setEvent('mousedown', function (mouse, event) {
        var get = {
            rx: function rx() {
                return mouse.tileX / 16;
            },
            ry: function ry() {
                return mouse.tileY / 16;
            },
            x: function x() {
                return Math.round(mouse.tileX / 16);
            },
            y: function y() {
                return Math.round(mouse.tileY / 16);
            }
        };
        var s = tool.extra.start;
        var e = tool.extra.end;
        var isInside = function isInside() {
            return get.rx() >= s[0] && get.rx() < e[0] && get.ry() >= s[1] && get.ry() < e[1];
        };
        if (mouse.buttons === 1 && !tool.extra.end) {
            tool.extra.start = [get.x(), get.y()];
            tool.extra.clicking = true;
            tool.setEvent('mousemove', function (mouse, event) {
                if (tool.extra.start && mouse.buttons === 1) {
                    tool.extra.end = [get.x(), get.y()];
                    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() && sure()) {
                tool.extra.start = null;
                tool.extra.end = null;
                var _ref = [s[0], s[1], e[0] - s[0], e[1] - s[1]],
                    x = _ref[0],
                    y = _ref[1],
                    w = _ref[2],
                    h = _ref[3];

                for (var i = x; i < x + w; i++) {
                    for (var j = y; j < y + h; j++) {
                        OWOP.net.protocol.clearChunk(i, j, [255, 255, 255]);
                    }
                }
            } else if (!isInside()) {
                tool.extra.start = null;
                tool.extra.end = null;
            }
        }
    });
}));