1 files changed, 73 insertions, 0 deletions
diff --git a/diplomacy/web/src/gui/maps/standard/supportHold.js b/diplomacy/web/src/gui/maps/standard/supportHold.js
new file mode 100644
index 0000000..bfa2656
--- /dev/null
+++ b/diplomacy/web/src/gui/maps/standard/supportHold.js
@@ -0,0 +1,73 @@
+// ==============================================================================
+// Copyright (C) 2019 - Philip Paquette, Steven Bocco
+//
+//  This program is free software: you can redistribute it and/or modify it under
+//  the terms of the GNU Affero General Public License as published by the Free
+//  Software Foundation, either version 3 of the License, or (at your option) any
+//  later version.
+//
+//  This program is distributed in the hope that it will be useful, but WITHOUT
+//  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+//  FOR A PARTICULAR PURPOSE.  See the GNU Affero General Public License for more
+//  details.
+//
+//  You should have received a copy of the GNU Affero General Public License along
+//  with this program.  If not, see <https://www.gnu.org/licenses/>.
+// ==============================================================================
+import React from "react";
+import {Colors, Coordinates, offset} from "./common";
+import PropTypes from "prop-types";
+
+export class SupportHold extends React.Component {
+    render() {
+        const loc = this.props.loc;
+        const dest_loc = this.props.dstLoc;
+        const loc_x = offset(Coordinates[loc].unit[0], 10);
+        const loc_y = offset(Coordinates[loc].unit[1], 10);
+        let dest_loc_x = offset(Coordinates[dest_loc].unit[0], 10);
+        let dest_loc_y = offset(Coordinates[dest_loc].unit[1], 10);
+
+        const delta_x = parseFloat(dest_loc_x) - parseFloat(loc_x);
+        const delta_y = parseFloat(dest_loc_y) - parseFloat(loc_y);
+        const vector_length = Math.sqrt(delta_x * delta_x + delta_y * delta_y);
+        dest_loc_x = '' + Math.round((parseFloat(loc_x) + (vector_length - 35.) / vector_length * delta_x) * 100.) / 100.;
+        dest_loc_y = '' + Math.round((parseFloat(loc_y) + (vector_length - 35.) / vector_length * delta_y) * 100.) / 100.;
+
+        const polygon_coord = [];
+        const poly_loc_x = offset(Coordinates[dest_loc].unit[0], 8.5);
+        const poly_loc_y = offset(Coordinates[dest_loc].unit[1], 9.5);
+        for (let ofs of [
+            [15.9, -38.3], [38.3, -15.9], [38.3, 15.9], [15.9, 38.3], [-15.9, 38.3], [-38.3, 15.9],
+            [-38.3, -15.9], [-15.9, -38.3]
+        ]) {
+            polygon_coord.push(offset(poly_loc_x, ofs[0]) + ',' + offset(poly_loc_y, ofs[1]));
+        }
+        return (
+            <g>
+                <line x1={loc_x}
+                      y1={loc_y}
+                      x2={dest_loc_x}
+                      y2={dest_loc_y}
+                      className={'shadowdash'}/>
+                <line x1={loc_x}
+                      y1={loc_y}
+                      x2={dest_loc_x}
+                      y2={dest_loc_y}
+                      className={'supportorder'}
+                      stroke={Colors[this.props.powerName]}/>
+                <polygon className={'shadowdash'}
+                         points={polygon_coord.join(' ')}/>
+                <polygon className={'supportorder'}
+                         points={polygon_coord.join(' ')}
+                         stroke={Colors[this.props.powerName]}
+                />
+            </g>
+        );
+    }
+}
+
+SupportHold.propTypes = {
+    loc: PropTypes.string.isRequired,
+    dstLoc: PropTypes.string.isRequired,
+    powerName: PropTypes.string.isRequired,
+};