allocator: std.mem.Allocator,
moveInput: *core.Axis2dBinding = undefined,

cameraSpeed: f32 = 10.0,
moveVector: core.Vectorf = .{},
mouseMove: core.Vector2f = .{},
verticalMove: f32 = 0.0,

centerDist: f32 = 2.0,
centerDistMove: f32 = 2.0,

mouseLook: bool = true,
showWindow: bool = true,

fpcamera: *FpCamera = undefined,

// videoplayer: *VideoPlayer = undefined,
// videoplayerObject: core.Entity = undefined,

objectSpawner: *extras.ObjectSpawner = undefined,

inputEnabled: bool = true,
videoFullbright: bool = false,

//moveLight: bool = true,

tbMap: ?*bsp.maploader.TBMap = null,

// addFunc: ?*const fn (i32, i32) callconv(.C) i32 = undefined,

engineTool: *extras.EngineTool = undefined,

modules: std.AutoHashMapUnmanaged(u32, []const u8) = .{},

pub var NeonObjectTable: core.EngineObjectVTable = core.EngineObjectVTable.from(@This(), "SampleGame");

pub fn init(allocator: std.mem.Allocator) !*@This() {
    const self = try allocator.create(@This());
    self.* = .{
        .allocator = allocator,
    };
    return self;
}

const assetReferences = [_]assets.AssetImportReference{
    assets.MakeImportRefOptions(
        "Mesh",
        "m_skybox",
        .{ .path = "meshes/skybox.obj" },
    ),
    assets.MakeImportRefOptions(
        "Mesh",
        "m_fox",
        .{ .path = "gltf-samples/Fox/glTF/Fox.gltf" },
    ),
    assets.MakeImportRefOptions(
        "Texture",
        "t_fox",
        .{ .path = "gltf-samples/Fox/glTF/Texture.png" },
    ),
    assets.MakeImportRefOptions("Texture", "t_crate", .{
        .path = "textures/Crate.png",
    }),
    assets.MakeImportRefOptions(
        "Mesh",
        "m_crate",
        .{ .path = "meshes/Crate.obj" },
    ),
    assets.MakeImportRefOptions(
        "Texture",
        "t_skybox",
        .{
            .textureCube = true,
            .textureList = &.{
                "sky_air/cube_right.png", // cubemapfacePositivex, right
                "sky_air/cube_left.png", // cubemapfacePositivex, right
                "sky_air/cube_up.png", // cubemapfacePositivex, right
                "sky_air/cube_down.png", // cubemapfacePositivex, right
                "sky_air/cube_back.png", // cubemapfacePositivex, right
                "sky_air/cube_front.png", // cubemapfacePositivex, right
            },
        },
    ),
};

pub const FoxObject = struct {
    data: core.GameObjectData = undefined,
    entity: core.Entity,

    pub fn create(alloc: std.mem.Allocator) !*@This() {
        const self = try alloc.create(@This());
        const fox = try core.createEntity();
        const scene = fox.addComponent(core.Scene).?;

        scene.setScale(0.01, 0.01, 0.01);
        const mesh = fox.addComponent(rend.MeshComponent).?;
        mesh.setMesh("m_fox");
        mesh.setTexture("t_fox");

        self.entity = fox;

        return self;
    }

    pub fn getEntity(self: *@This()) core.Entity {
        return self.entity;
    }

    pub fn destroy(self: *@This()) void {
        self.entity.destroy();
        self.data.release(self);
    }
};

pub const DamagedHelmet = struct {
    data: core.GameObjectData = undefined,
    entity: core.Entity,

    var first: bool = true;
    pub fn create(alloc: std.mem.Allocator) !*@This() {
        const refs = [_]assets.AssetImportReference{ assets.MakeImportRefOptions(
            "Mesh",
            "m_damagedHelmet",
            .{ .path = "gltf-samples/DamagedHelmet/glTF/DamagedHelmet.gltf" },
        ), assets.MakeImportRefOptions(
            "Texture",
            "t_damagedHelmet",
            .{ .path = "gltf-samples/DamagedHelmet/glTF/Default_albedo.png" },
        ) };

        if (first) {
            first = false;
            try assets.loadList(refs);
        }

        const self = try alloc.create(@This());
        self.entity = try core.createEntity();
        const scene = self.entity.addComponent(core.Scene).?;
        _ = scene;

        // scene.setScale(0.01, 0.01, 0.01);
        const mesh = self.entity.addComponent(rend.MeshComponent).?;
        mesh.setMesh("m_damagedHelmet");
        mesh.setTexture("t_damagedHelmet");

        return self;
    }

    pub fn getEntity(self: *@This()) core.Entity {
        return self.entity;
    }

    pub fn destroy(self: *@This()) void {
        self.entity.destroy();
        self.data.release(self);
    }
};

pub fn prepare(self: *@This()) !void {
    core.engine_log(">>>>>>> game prepare", .{});
    var z = core.tracy.ZoneN(@src(), "PREPARING GAME");
    defer z.End();
    try core.fs().addContentPath("sampleGame");

    // try core.loadModule("externGame", true);

    try backlog.loadDynamicModules();

    self.engineTool = try extras.EngineTool.create(self.allocator);

    // core.fs().watchPath("zig-out/modules");
    // try core.fs().addFileChangedCallback(core.sharedLibName("externGame"), moduleChangedCallback, self);

    // try self.tryLoadExtern("externGame");

    // self.rendererDebugger = try extras.RendererDebug.create(self.allocator); //try core.createObject(extras.RendererDebug, .{});
    _ = try core.createObject(extras.RendererDebug, .{});

    //self.objectSpawner = try extras.ObjectSpawner.create(self.allocator);
    self.objectSpawner = try core.createObject(extras.ObjectSpawner, .{});
    try self.objectSpawner.addSpawnFunction("fox", FoxObject);
    try self.objectSpawner.addSpawnFunction("doomplayer", DoomPlayer.DoomCanvas);
    try self.objectSpawner.addSpawnFunction("empire", @import("empire.zig"));
    try self.objectSpawner.addSpawnFunction("DamagedHelmet", DamagedHelmet);

    try assets.loadList(assetReferences);
    // self.videoplayer = try VideoPlayer.create(self.allocator);
    // try self.videoplayer.startPlayback("LAPWING2.ogv");
    // self.videoplayerObject = try self.videoplayer.createVideoPlayerEntity();

    rend.setSkyboxTexture("t_skybox");

    const exitInput = try core.ActionBinding.create(core.MakeName("exit"));
    exitInput.addKey(.escape, .keyDown);
    _ = exitInput.data.addListener(null, onExit);
    exitInput.activate();

    {
        const inp = try core.ActionBinding.create(core.MakeName("slow"));
        inp.addKey(.lshift, .keyDown);
        inp.addKey(.lshift, .keyUp);
        _ = inp.data.addListener(self, slowDown);
        inp.activate();
    }

    self.fpcamera = try FpCamera.create(self.allocator);
    self.fpcamera.setPosition(.{ .z = 15 });
    self.fpcamera.activateCamera();

    const moveInput = try core.Axis2dBinding.create(core.MakeName("movement"));

    moveInput.addKey(.w, 1.0, .y);
    moveInput.addKey(.s, -1.0, .y);
    moveInput.addKey(.d, 1.0, .x);
    moveInput.addKey(.a, -1.0, .x);

    _ = moveInput.data.addListener(self, onMove);
    moveInput.activate();

    {
        const i = try core.Axis1dBinding.create(core.MakeName("rotPitch"));
        i.addKey(.f, 1.0);
        i.addKey(.v, -1.0);

        _ = i.data.addListener(self, distanceMove);
        i.activate();
    }

    {
        const verticalInput = try core.Axis1dBinding.create(core.MakeName("movementVertical"));
        verticalInput.addKey(.e, 1.0);
        verticalInput.addKey(.q, -1.0);

        _ = verticalInput.data.addListener(self, verticalMovement);
        verticalInput.activate();
    }

    {
        const mouseLook = try core.Axis2dBinding.create(core.MakeName("mouseLook"));
        mouseLook.enableMouseRelative();
        _ = mouseLook.data.addListener(self, onMouseLook);
        mouseLook.activate();
    }

    {
        const shaderReload = try core.ActionBinding.create(core.MakeName("shaderReload"));
        shaderReload.addKey(.r, .keyDown);
        _ = shaderReload.data.addListener(self, onShaderReload);
        shaderReload.activate();
    }

    {
        const input = try core.ActionBinding.create(core.MakeName("toggleDoom"));
        input.addKey(.f2, .keyDown);
        _ = input.data.addListener(self, toggleDoom);
        input.activate();
    }

    {
        const input = try core.ActionBinding.create(core.MakeName("toggleMouseLook"));
        input.addKey(.t, .keyDown);
        _ = input.data.addListener(self, toggleMouseLook);
        input.activate();
    }
    self.updateMouseLook();
}

fn onMouseLook(ctx: ?*anyopaque, axis: core.Vector2f) void {
    const self: *@This() = @ptrCast(@alignCast(ctx));

    if (self.inputEnabled) {
        self.fpcamera.addMouseMovement(axis);
    }
}

fn toggleDoom(ctx: ?*anyopaque, action: core.ActionEvent) void {
    const self: *@This() = @ptrCast(@alignCast(ctx));
    _ = action;

    self.inputEnabled = !self.inputEnabled;

    if (DoomPlayer.gDoom) |c| {
        c.inputEnabled = !self.inputEnabled;
    }
}

fn toggleMouseLook(ctx: ?*anyopaque, action: core.ActionEvent) void {
    const self: *@This() = @ptrCast(@alignCast(ctx));
    _ = action;

    self.mouseLook = !self.mouseLook;
    if (!self.mouseLook)
        self.showWindow = true;

    self.updateMouseLook();
}

fn updateMouseLook(self: *@This()) void {
    self.fpcamera.mouseLookEnabled = self.mouseLook;
    platform.setMouseRelativeMode(self.mouseLook);
    // platform.setImguiVisible(!self.mouseLook);
}

fn onShaderReload(ctx: ?*anyopaque, action: core.ActionEvent) void {
    _ = ctx;
    _ = action;

    core.engine_log("reloading shaders, this is gonna cause some leaks but thats ok", .{});
    rend.renderer.reloadShaders() catch {
        core.engine_log("unable to reload shaders", .{});
    };
}

fn slowDown(ctx: ?*anyopaque, action: core.ActionEvent) void {
    const self: *@This() = @ptrCast(@alignCast(ctx));

    if (action == .keyUp) {
        self.cameraSpeed = 10.0;
    }
    if (action == .keyDown) {
        self.cameraSpeed = 4.0;
    }
}

fn distanceMove(ctx: ?*anyopaque, axis: f32) void {
    const self: *@This() = @ptrCast(@alignCast(ctx));
    self.centerDistMove = axis;
}

fn cameraRotate(ctx: ?*anyopaque, axis: f32) void {
    const self: *@This() = @ptrCast(@alignCast(ctx));
    self.rotateAxis = axis;
}

fn verticalMovement(ctx: ?*anyopaque, axis: f32) void {
    const self: *@This() = @ptrCast(@alignCast(ctx));
    self.verticalMove = axis;
}

fn onMove(ctx: ?*anyopaque, axis: core.Vector2f) void {
    const self: *@This() = @ptrCast(@alignCast(ctx));
    self.moveVector = .{ .x = axis.x, .z = axis.y, .y = 0.0 };
}

pub fn onExit(ctx: ?*anyopaque, action: core.ActionEvent) void {
    _ = ctx;
    _ = action;

    core.exitNow();
}

pub fn getMouseMovement(self: *@This()) core.Vector2f {
    const rv = self.mouseMove;
    self.mouseMove = .{};

    return rv;
}

pub fn tryLoadExtern(self: *@This(), gameName: []const u8) !void {
    var buf = std.mem.zeroes([256]u8);

    const os_tag = @import("builtin").os.tag;

    var suffix: []const u8 = "dll";
    var prefix: []const u8 = "";
    if (os_tag == .linux) {
        prefix = "lib";
        suffix = "so";
    } else if (os_tag == .macos) {
        suffix = "dylib";
        prefix = "lib";
    }

    const path = try std.fmt.bufPrint(&buf, "zig-out/modules/{s}{s}.{s}", .{ prefix, gameName, suffix });
    var lib = try std.DynLib.open(path);
    // std.debug.print("path: {s}", .{path});

    self.addFunc = lib.lookup(@TypeOf(self.addFunc.?), "add");
}

pub fn tick(self: *@This(), dt: f64) void {
    const fdt: f32 = @floatCast(dt);

    const z4 = tracy.ZoneN(@src(), "fpCamera");
    self.fpcamera.tick(dt);
    z4.End();

    const z5 = tracy.ZoneN(@src(), "doomplayer");
    DoomPlayer.maybeTick(dt);
    z5.End();

    var movement = self.fpcamera.getForwardXZ().fmul(self.moveVector.z * fdt * self.cameraSpeed);
    movement = movement.add(self.fpcamera.getRightXZ().fmul(self.moveVector.x * fdt * self.cameraSpeed));
    movement = movement.add(.{ .y = self.verticalMove * fdt * self.cameraSpeed });
    self.centerDist += self.centerDistMove * fdt;

    const pos = self.fpcamera.getPosition().add(movement);

    if (self.inputEnabled) {
        self.fpcamera.setPosition(pos);
    }

    self.fpcamera.resolve();

    const forward = self.fpcamera.getForward();
    const debugCenter = self.fpcamera.getPosition().add(forward.fmul(self.centerDist));
    self.objectSpawner.spawnPosition = debugCenter;
    self.objectSpawner.spawnRotation = core.Rotation.eulerY(core.radians(self.fpcamera.yaw));

    self.objectSpawner.windowOpen = !self.mouseLook;
}

pub fn deinit(self: *@This()) void {
    self.modules.deinit(self.allocator);
    // self.rendererDebugger.destroy();
    DoomPlayer.DoomCanvas.cleanupDoom();
    self.fpcamera.destroy();

    // self.objectSpawner.destroy();
    // self.videoplayer.destroy();
    self.allocator.destroy(self);
}

pub fn main() anyerror!void {
    var spec = try backlog.getSpec("sampleGame");
    _ = backlog.startEngine(&NeonObjectTable, &spec);

    // try backlog.initializeAndRunStandardProgram(@This(), .{
    //   .name = "sampleGame",
    //   .enabledModules = .{
    //        .imgui = true,
    //       .physics = true,
    //      .audio = true,
    //  },
    //});
}

const DoomPlayer = @import("doomplayer");
//const VideoPlayer = @import("videoplayer");
const extras = @import("gameExtras");
const bsp = @import("bsp");

const FpCamera = extras.FpCamera;
const std = @import("std");
const backlog = @import("backlog");
const assets = backlog.assets;
const platform = backlog.platform;
const core = backlog.core;
const ig = backlog.imgui.api;
const rend = backlog.rend;
const script = core.script;
const tracy = core.tracy;
const ui = backlog.ui;