Fixed ship facing angle

src/scripts/game/Ship.ts

@@ -204,8 +204,10 @@ module SpaceTac.Game {
             var dy = dest[1] - this.arena_y;
             var distance = Math.sqrt(dx * dx + dy * dy);
             var cost = distance * this.movement_cost;
+            var angle = Math.atan2(y - this.arena_y, x - this.arena_x);
 
             this.setArenaPosition(this.arena_x + dx, this.arena_y + dy);
+            this.setArenaFacingAngle(angle);
             this.useActionPoints(cost);
         }
 

src/scripts/game/events/MoveEvent.ts

@@ -3,8 +3,13 @@ module SpaceTac.Game {
 
     // Event logged when a ship moves
     export class MoveEvent extends BaseLogEvent {
+        // New facing angle, in radians
+        facing_angle: number;
+
         constructor(ship: Ship, x: number, y: number) {
             super("move", ship, Target.newFromLocation(x, y));
+
+            this.facing_angle = ship.arena_angle;
         }
     }
 }

src/scripts/game/specs/Ship.spec.ts

@@ -37,6 +37,33 @@ module SpaceTac.Game {
             expect(ship.arena_y).toEqual(50);
         });
 
+        it("computes facing angle", function () {
+            var ship = new Ship(null, "Test");
+            ship.ap_current.setMaximal(20);
+            ship.ap_current.set(20);
+            ship.movement_cost = 3;
+            ship.arena_angle = 0;
+            ship.setArenaPosition(50, 50);
+
+            ship.moveTo(50, 50);
+            expect(ship.arena_angle).toEqual(0);
+
+            ship.moveTo(51, 51);
+            expect(ship.arena_angle).toBeCloseTo(0.785398, 0.00001);
+
+            ship.moveTo(51, 52);
+            expect(ship.arena_angle).toBeCloseTo(1.5707963, 0.00001);
+
+            ship.moveTo(52, 52);
+            expect(ship.arena_angle).toEqual(0);
+
+            ship.moveTo(52, 50);
+            expect(ship.arena_angle).toBeCloseTo(-1.5707963, 0.00001);
+
+            ship.moveTo(50, 50);
+            expect(ship.arena_angle).toBeCloseTo(3.14159265, 0.00001);
+        });
+
         it("lists available actions from attached equipment", function () {
             var ship = new Ship(null, "Test");
             var actions: BaseAction[];

src/scripts/view/battle/ArenaShip.ts

@@ -70,19 +70,18 @@ module SpaceTac.View {
         }
 
         // Move the sprite to a location
-        moveTo(x: number, y: number, animate: boolean = true) {
-            var angle = Math.atan2(y - this.y, x - this.x);
+        moveTo(x: number, y: number, facing_angle: number, animate: boolean = true) {
             if (animate) {
                 var tween_group = this.game.tweens.create(this);
                 var tween_sprite = this.game.tweens.create(this.sprite);
                 tween_group.to({x: x, y: y});
                 tween_group.start();
-                tween_sprite.to({rotation: angle});
+                tween_sprite.to({rotation: facing_angle});
                 tween_sprite.start();
             } else {
                 this.x = x;
                 this.y = y;
-                this.sprite.rotation = angle;
+                this.sprite.rotation = facing_angle;
             }
         }
     }

src/scripts/view/battle/LogProcessor.ts

@@ -40,9 +40,10 @@ module SpaceTac.View {
                     this.view.action_bar.setShip(event.target.ship);
                     break;
                 case "move":
-                    var sprite = this.view.arena.findShipSprite(event.ship);
+                    var move_event: Game.MoveEvent = <Game.MoveEvent>event;
+                    var sprite = this.view.arena.findShipSprite(move_event.ship);
                     if (sprite) {
-                        sprite.moveTo(event.target.x, event.target.y);
+                        sprite.moveTo(move_event.target.x, move_event.target.y, move_event.facing_angle, true);
                     }
                     break;
             }