Add ship validity checking

js/data.mjs

@@ -1,3 +1,5 @@
+// Connectivity = [top, right, bottom, left] (same TRouBLe as CSS)
+
 export const modules = {
 	capsule: {
 		small: {
@@ -7,6 +9,8 @@ export const modules = {
 			type: 'capsule',
 			id: 'small',
 			mass: 2,
+			connectivity: [false, false, true, false],
+			capacity: 3,
 			rotation: 0.1
 		}
 	},
@@ -17,7 +21,8 @@ export const modules = {
 			type: 'fuel',
 			id: 'small',
 			mass: 1,
-			capacity: 3
+			connectivity: [true, false, true, false],
+			fuelCapacity: 5
 		}
 	},
 	thruster: {
@@ -28,6 +33,7 @@ export const modules = {
 			type: 'thruster',
 			id: 'light',
 			mass: 2,
+			connectivity: [true, false, false, false],
 			thrust: 10,
 			isp: 200
 		}

js/game/control.mjs

@@ -51,7 +51,7 @@ function tickPlaying() {
 }
 
 function tickEditing() {
-	if (held[mapping.exitEdit]) {
+	if (pressed[mapping.exitEdit]) {
 		events.endEditing();
 	}
 }

js/game/edit.mjs

@@ -33,7 +33,47 @@ export function init() {
 }
 
 export function end() {
+	let result = validate();
 
+	return {
+		valid: result === false,
+		reason: result
+	}
+}
+
+function validate() {
+	let capsulesFound = 0;
+	let thrustersFound = 0;
+	let unvisited = new Set();
+
+	tiles.forEach(t => {
+		if (t.type !== null) unvisited.add(t)
+	});
+
+	if (unvisited.size == 0) {
+		return 'no capsule';
+	}
+
+	let visit = (tile) => {
+		unvisited.delete(tile);
+		if (tile.type == 'capsule') capsulesFound++;
+		if (tile.type == 'thruster') thrustersFound++;
+		tile.neighbours.forEach(n => {
+			if (unvisited.has(n)) visit(n);
+		});
+	};
+
+	visit(unvisited.values().next().value);
+
+	if (unvisited.size > 0) {
+		return 'not connected'
+	} else if (capsulesFound === 0) {
+		return 'no capsule'
+	} else if (thrustersFound === 0) {
+		return 'no thruster'
+	} else {
+		return false;
+	}
 }
 
 function positionAdjust(x, y) {
@@ -68,10 +108,13 @@ export function rightClickTile(x, y) {
 
 export function getTile(x, y) {
 	let [px, py] = position;
-	let [tx, ty] = [px + x, py + y];
-	let id = posId(tx, ty);
+	return getRawTile(px + x, py + y);
+}
+
+export function getRawTile(x, y) {
+	let id = posId(x, y);
 	if (!tiles.has(id))
-		tiles.set(id, new Tile(tx, ty, null));
+		tiles.set(id, new Tile(x, y, null));
 	return tiles.get(id);
 	// TODO: Get linked tiles.
 }
@@ -81,7 +124,7 @@ function posId(x, y) {
 }
 
 function getBoundaries() {
-	return [0, 0, 0, 2];
+	return [0, 0, 0, 3];
 }
 
 class Tile {
@@ -105,6 +148,12 @@ class Tile {
 		return true;
 	}
 
+	get neighbours() {
+		return [[0, -1], [1, 0], [0, 1], [-1, 0]].filter((_, i) => {
+			return this.module.connectivity[i];
+		}).map(([dx, dy]) => getRawTile(this.x + dx, this.y + dy));
+	}
+
 	get source() {
 		return this;
 	}

js/game/events.mjs

@@ -28,10 +28,15 @@ export function editShip() {
 }
 
 export function endEditing() {
+	let {valid, reason} = edit.end();
+
+	if (valid) {
 		graphics.changePerspective('universe');
 		game.state.editing = false;
 		game.state.inventory = false;
-	edit.end();
+	} else {
+		console.log(reason);
+	}
 }
 
 export function invalidTilePlacement() {

js/gui/inventory.mjs

@@ -78,12 +78,8 @@ export default class GuiInventory extends GuiElement {
 	tileClicked(type, id, button) {
 		if (button == 'left') inventory.selectItem(type, id);
 
-		if (!state.editing) {
-			if (button == 'left') {
-				inventory.addItem(type, id);
-			} else if (button == 'right') {
-				inventory.removeitem(type, id);
-			}
+		if (!state.editing && button == 'right') {
+			inventory.removeItem(type, id);
 		}
 
 		this.updateTiles();