1 files changed, 72 insertions, 0 deletions
diff --git a/diplomacy/web/src/gui/maps/common/supportHold.js b/diplomacy/web/src/gui/maps/common/supportHold.js
new file mode 100644
index 0000000..9b350d2
--- /dev/null
+++ b/diplomacy/web/src/gui/maps/common/supportHold.js
@@ -0,0 +1,72 @@
+// ==============================================================================
+// 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 {centerSymbolAroundUnit, getUnitCenter} from "./common";
+import PropTypes from "prop-types";
+
+export class SupportHold extends React.Component {
+    render() {
+        const Coordinates = this.props.coordinates;
+        const SymbolSizes = this.props.symbolSizes;
+        const Colors = this.props.colors;
+        const loc = this.props.loc;
+        const dest_loc = this.props.dstLoc;
+        const symbol = 'SupportHoldUnit';
+        const [symbol_loc_x, symbol_loc_y] = centerSymbolAroundUnit(Coordinates, SymbolSizes, dest_loc, false, symbol);
+        const [loc_x, loc_y] = getUnitCenter(Coordinates, SymbolSizes, loc, false);
+        let [dest_loc_x, dest_loc_y] = getUnitCenter(Coordinates, SymbolSizes, dest_loc, false);
+
+        const delta_x = dest_loc_x - loc_x;
+        const delta_y = dest_loc_y - loc_y;
+        const vector_length = Math.sqrt(delta_x * delta_x + delta_y * delta_y);
+        const delta_dec = parseFloat(SymbolSizes[symbol].height) / 2;
+        dest_loc_x = '' + Math.round((parseFloat(loc_x) + (vector_length - delta_dec) / vector_length * delta_x) * 100.) / 100.;
+        dest_loc_y = '' + Math.round((parseFloat(loc_y) + (vector_length - delta_dec) / vector_length * delta_y) * 100.) / 100.;
+
+        return (
+            <g stroke={Colors[this.props.powerName]}>
+                <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]}/>
+                <use
+                    x={symbol_loc_x}
+                    y={symbol_loc_y}
+                    width={SymbolSizes[symbol].width}
+                    height={SymbolSizes[symbol].height}
+                    href={`#${symbol}`}
+                />
+            </g>
+        );
+    }
+}
+
+SupportHold.propTypes = {
+    loc: PropTypes.string.isRequired,
+    dstLoc: PropTypes.string.isRequired,
+    powerName: PropTypes.string.isRequired,
+    coordinates: PropTypes.object.isRequired,
+    symbolSizes: PropTypes.object.isRequired,
+    colors: PropTypes.object.isRequired
+};