From d6175bb84afe03327eff455feb14d85e1e02803d Mon Sep 17 00:00:00 2001
From: Tim Wundenberg <tim@wundenbergs.de>
Date: Wed, 23 Jul 2025 17:13:53 +0200
Subject: [PATCH] feat: add first loose condition

---
 src/game.zig | 23 ++++++++++++++++++++++-
 1 file changed, 22 insertions(+), 1 deletion(-)

diff --git a/src/game.zig b/src/game.zig
index 32a5a74..37513fe 100644
--- a/src/game.zig
+++ b/src/game.zig
@@ -73,6 +73,12 @@ const Game = struct {
         }
 
         const newHead = self.body.items[0] + self.direction.vector();
+        if (newHead[0] == 0 or newHead[0] == self.playFieldSize[0] or
+            newHead[1] == 0 or newHead[1] == self.playFieldSize[1])
+        {
+            self.state = State.lost;
+            return;
+        }
         try self.body.insert(0, newHead);
         _ = self.body.pop();
     }
@@ -116,7 +122,22 @@ test "should not be able to change direction to the previous position" {
     try testing.expectEqual(Direction.right, game.direction);
 }
 
-test "should loose if exiting playField" {}
+test "should loose if exiting playField right" {
+    const allocator = testing.allocator;
+
+    var game = try Game.create(allocator);
+    defer game.deinit();
+
+    for (0..10) |_| {
+        try game.tick();
+    }
+
+    const expected = [_]Vec2{ Vec2{ 19, 10 }, Vec2{ 18, 10 }, Vec2{ 17, 10 } };
+    try testing.expectEqualSlices(Vec2, &expected, game.body.items);
+
+    try testing.expectEqual(State.lost, game.state);
+}
+
 test "should loose if eating itself" {}
 test "should grow if eating food" {}
 test "should win if no space is left" {}