Startpoint widget implemented

tilorswift/js/Terrain.js

@@ -10,6 +10,8 @@ export default class Terrain
         this.fields = [];
         this.tilesX = tilesX;
         this.tilesY = tilesY;
+        this.entranceTileX = undefined;
+        this.entranceTileY = undefined;
         this.backgroundColor = backgroundColor;
         this.htmlElement = document.createElement('table');
         this.brushTileIndex = 0;
@@ -62,6 +64,38 @@ export default class Terrain
         this.fields[y][x].setIndex(index);
     }
 
+    setEntrancePoint(tileX, tileY)
+    {
+        if (this.fields[tileY][tileX].index === -1) {
+            if (this.entranceTileX !== undefined && this.entranceTileY !== undefined) {
+                this.fields[this.entranceTileY][this.entranceTileX].setEntrancePoint(false);
+            }
+
+            this.entranceTileX = tileX;
+            this.entranceTileY = tileY;
+
+            this.fields[tileY][tileX].setEntrancePoint(true);
+        }
+    }
+
+    getFieldCoordinates(field)
+    {
+        for (let y = 0; y < this.fields.length; y++) {
+            for (let x = 0; x < this.fields[y].length; x++) {
+                if (this.fields[y][x] === field) {
+                    return {x: x, y: y};
+                }
+            }
+        }
+
+        return undefined;
+    }
+
+    hasEntrancePoint()
+    {
+        return this.entranceTileX !== undefined && this.entranceTileY !== undefined;
+    }
+
     static createFromJson(json)
     {
         let terrainData = JSON.parse(json);