From 14c2530817f20986b51f611ef637d09f43aac23c Mon Sep 17 00:00:00 2001
From: jjanzen <jjanzen@jjanzen.ca>
Date: Wed, 22 Jan 2025 14:22:12 -0600
Subject: fix memory leak and implement stub front end
---
src/run.zig | 93 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 93 insertions(+)
create mode 100644 src/run.zig
(limited to 'src/run.zig')
diff --git a/src/run.zig b/src/run.zig
new file mode 100644
index 0000000..e20d9b5
--- /dev/null
+++ b/src/run.zig
@@ -0,0 +1,93 @@
+const std = @import("std");
+const stub = @import("frontend/stub.zig");
+const IO = @import("frontend/io_interface.zig").IOInterface;
+const Action = @import("actions.zig").Action;
+
+pub fn run(allocator: std.mem.Allocator, io: *IO) !void {
+ try io.displayMessage("Initialized");
+
+ var action = Action.illegal;
+ var tick_count: usize = 0;
+ while (action != Action.exit) {
+ const str = try std.fmt.allocPrint(allocator, "{}", .{tick_count});
+ defer allocator.free(str);
+ try io.displayMessage(str);
+
+ action = try io.waitForTick();
+ switch (action) {
+ Action.tick => {
+ tick_count += 1;
+ },
+ else => {},
+ }
+ }
+}
+
+test "can run game" {
+ const allocator = std.testing.allocator;
+
+ var as = stub.ActionStack.init(allocator);
+ defer as.deinit();
+
+ var io = try stub.IO.init(allocator, as);
+ defer io.deinit();
+
+ var res: ?anyerror = null;
+ run(allocator, &io) catch |err| {
+ res = err;
+ };
+ try std.testing.expect(res != null);
+ try std.testing.expectEqual(error.NoAvailableAction, res.?);
+}
+
+test "game exits on Action.exit" {
+ const allocator = std.testing.allocator;
+
+ var as = stub.ActionStack.init(allocator);
+ defer as.deinit();
+ try as.scheduleAction(Action.exit);
+
+ var io = try stub.IO.init(allocator, as);
+ defer io.deinit();
+
+ try run(allocator, &io);
+ const io_obj: *const stub.IO = @ptrCast(@alignCast(io.ptr));
+ var actions = io_obj.out_as;
+
+ const act = actions.next().?;
+ try std.testing.expectEqual(Action.exit, act);
+}
+
+test "game processes stream of actions" {
+ const allocator = std.testing.allocator;
+
+ var as = stub.ActionStack.init(allocator);
+ defer as.deinit();
+
+ try as.scheduleAction(Action.exit);
+ try as.scheduleAction(Action.move_right);
+ try as.scheduleAction(Action.move_left);
+ try as.scheduleAction(Action.move_down);
+ try as.scheduleAction(Action.move_up);
+ try as.scheduleAction(Action.tick);
+
+ var io = try stub.IO.init(allocator, as);
+ defer io.deinit();
+
+ try run(allocator, &io);
+ const io_obj: *const stub.IO = @ptrCast(@alignCast(io.ptr));
+ var actions = io_obj.out_as;
+
+ var act = actions.next().?;
+ try std.testing.expectEqual(Action.exit, act);
+ act = actions.next().?;
+ try std.testing.expectEqual(Action.move_right, act);
+ act = actions.next().?;
+ try std.testing.expectEqual(Action.move_left, act);
+ act = actions.next().?;
+ try std.testing.expectEqual(Action.move_down, act);
+ act = actions.next().?;
+ try std.testing.expectEqual(Action.move_up, act);
+ act = actions.next().?;
+ try std.testing.expectEqual(Action.tick, act);
+}
--
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