make things build

Signed-off-by: Xe Iaso <me@christine.website>

build.zig

@@ -1,30 +1,27 @@
 const std = @import("std");
 
-pub fn build(b: *std.build.Builder) !void {
+pub fn build(b: *std.build.Builder) void {
     const mode = b.standardReleaseOptions();
-    const lib = b.addSharedLibrary("cart", "src/main.zig", .unversioned);
 
+    const lib = b.addSharedLibrary("cart", "src/main.zig", .unversioned);
     lib.setBuildMode(mode);
     lib.setTarget(.{ .cpu_arch = .wasm32, .os_tag = .freestanding });
     lib.import_memory = true;
     lib.initial_memory = 65536;
     lib.max_memory = 65536;
-    lib.stack_size = 14752;
-
-    // Export WASM-4 symbols
+    lib.global_base = 6560;
+    lib.stack_size = 8192;
     lib.export_symbol_names = &[_][]const u8{ "start", "update" };
-
     lib.install();
 
+    const lib_artifact = b.addInstallArtifact(lib);
 
-    const run_cmd = b.addSystemCommand(&.{"w4", "run-native"});
-    run_cmd.step.dependOn(&lib.step);
-    run_cmd.addFileSourceArg(lib.getOutputSource());
-    if (b.args) |args| {
-        run_cmd.addArgs(args);
-    }
-
-    const run_step = b.step("run", "Run Cartridge with w4");
-    run_step.dependOn(&run_cmd.step);
+    const run_command = b.addSystemCommand(&.{
+        "w4", "run", "zig-out/lib/cart.wasm",
+        "--no-open",
+    });
+    run_command.step.dependOn(&lib_artifact.step);
 
+    const run_step = b.step("run", "Run the app");
+    run_step.dependOn(&run_command.step);
 }

dist/.gitignore

@@ -0,0 +1 @@
+*.wasm

release.sh

@@ -0,0 +1,9 @@
+#!/usr/bin/env bash
+
+set -e
+
+mkdir -p dist
+rm -rf dist/*
+zig build -Drelease-small=true
+wasm-opt -Oz --zero-filled-memory --strip-producers --dce ./zig-out/lib/cart.wasm -o ./dist/tamamo.wasm
+wasm-strip ./dist/tamamo.wasm

src/main.zig

@@ -11,12 +11,14 @@ const smiley = [8]u8{
     0b11000011,
 };
 
+export fn start() void {}
+
 export fn update() void {
     w4.m.colors._0 = .p1;
     w4.text("Hello from Zig!", 10, 10);
 
     const gamepad = w4.m.gamepads[0];
-    if (gamepad.x) {
+    if (gamepad.a) {
         w4.m.colors._0 = .p3;
     }