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#import "scene.hh"
#import "nes/app/application.hh"
#import "nes/app/input/input-device-keyboard.hh"
#import "nes/app/input/input-device-controller.hh"
#import "nes/app/input/input-buffer.hh"
#import "nes/common/display.hh"
#import <memory>
#import <optional>
namespace
{
class display_impl final : public nes::display
{
SKSpriteNode* node_;
NSMutableData* buffer_front_;
NSMutableData* buffer_back_;
nes::u8* bytes_back_;
public:
explicit display_impl(SKSpriteNode* node)
: node_{ node }
, buffer_front_{ make_buffer() }
, buffer_back_{ make_buffer() }
, bytes_back_{ static_cast<nes::u8*>([buffer_back_ mutableBytes]) }
{
}
~display_impl() = default;
virtual auto switch_buffers() -> void override
{
auto tmp = buffer_back_;
buffer_back_ = buffer_front_;
buffer_front_ = tmp;
bytes_back_ = static_cast<nes::u8*>([buffer_back_ mutableBytes]);
auto texture = [SKTexture textureWithData:buffer_front_ size:CGSizeMake(width, height) flipped:YES];
[texture setFilteringMode:SKTextureFilteringNearest];
[node_ setTexture:texture];
}
virtual auto set(nes::u32 x, nes::u32 y, nes::rgb value) -> void override
{
auto const offset = (y * width + x) * 4;
bytes_back_[offset + 0] = value.r;
bytes_back_[offset + 1] = value.g;
bytes_back_[offset + 2] = value.b;
bytes_back_[offset + 3] = 255;
}
virtual auto get(nes::u32 x, nes::u32 y) const -> nes::rgb override
{
auto const offset = (y * width + x) * 4;
auto res = nes::rgb{};
res.r = bytes_back_[offset + 0];
res.g = bytes_back_[offset + 1];
res.b = bytes_back_[offset + 2];
return res;
}
private:
static auto make_buffer() -> NSMutableData*
{
auto const length = NSUInteger{ width * height * 4 };
return [NSMutableData dataWithLength:length];
}
};
class input_device_keyboard_impl final : public nes::app::input_device_keyboard
{
GCKeyboardInput* profile_{ nil };
nes::app::input_buffer buffer_;
public:
explicit input_device_keyboard_impl(GCKeyboardInput* profile)
{
set_profile(profile);
}
~input_device_keyboard_impl()
{
set_profile(nil);
}
auto set_profile(GCKeyboardInput* profile) -> void
{
[profile_ setKeyChangedHandler:nil];
profile_ = profile;
[profile_ setKeyChangedHandler:^(GCKeyboardInput*, GCControllerButtonInput*, GCKeyCode key_code, BOOL pressed) {
handle_key_changed(key_code, pressed);
}];
}
auto read_key(nes::app::key const key) -> bool override { return buffer_.read_key(key); }
auto poll_event() -> nes::app::input_event override { return buffer_.poll_event(); }
private:
auto handle_key_changed(GCKeyCode const key_code, BOOL const pressed) -> void
{
auto const key = convert_key_code(key_code);
if (key)
{
if (pressed)
{
buffer_.key_down(*key);
}
else
{
buffer_.key_up(*key);
}
}
}
auto convert_key_code(GCKeyCode const key_code) -> std::optional<nes::app::key>
{
if (key_code == GCKeyCodeZero) { return nes::app::key::digit_0; }
if (key_code == GCKeyCodeOne) { return nes::app::key::digit_1; }
if (key_code == GCKeyCodeTwo) { return nes::app::key::digit_2; }
if (key_code == GCKeyCodeThree) { return nes::app::key::digit_3; }
if (key_code == GCKeyCodeFour) { return nes::app::key::digit_4; }
if (key_code == GCKeyCodeFive) { return nes::app::key::digit_5; }
if (key_code == GCKeyCodeSix) { return nes::app::key::digit_6; }
if (key_code == GCKeyCodeSeven) { return nes::app::key::digit_7; }
if (key_code == GCKeyCodeEight) { return nes::app::key::digit_8; }
if (key_code == GCKeyCodeNine) { return nes::app::key::digit_9; }
if (key_code == GCKeyCodeKeyA) { return nes::app::key::letter_a; }
if (key_code == GCKeyCodeKeyB) { return nes::app::key::letter_b; }
if (key_code == GCKeyCodeKeyC) { return nes::app::key::letter_c; }
if (key_code == GCKeyCodeKeyD) { return nes::app::key::letter_d; }
if (key_code == GCKeyCodeKeyE) { return nes::app::key::letter_e; }
if (key_code == GCKeyCodeKeyF) { return nes::app::key::letter_f; }
if (key_code == GCKeyCodeKeyG) { return nes::app::key::letter_g; }
if (key_code == GCKeyCodeKeyH) { return nes::app::key::letter_h; }
if (key_code == GCKeyCodeKeyI) { return nes::app::key::letter_i; }
if (key_code == GCKeyCodeKeyJ) { return nes::app::key::letter_j; }
if (key_code == GCKeyCodeKeyK) { return nes::app::key::letter_k; }
if (key_code == GCKeyCodeKeyL) { return nes::app::key::letter_l; }
if (key_code == GCKeyCodeKeyM) { return nes::app::key::letter_m; }
if (key_code == GCKeyCodeKeyN) { return nes::app::key::letter_n; }
if (key_code == GCKeyCodeKeyO) { return nes::app::key::letter_o; }
if (key_code == GCKeyCodeKeyP) { return nes::app::key::letter_p; }
if (key_code == GCKeyCodeKeyQ) { return nes::app::key::letter_q; }
if (key_code == GCKeyCodeKeyR) { return nes::app::key::letter_r; }
if (key_code == GCKeyCodeKeyS) { return nes::app::key::letter_s; }
if (key_code == GCKeyCodeKeyT) { return nes::app::key::letter_t; }
if (key_code == GCKeyCodeKeyU) { return nes::app::key::letter_u; }
if (key_code == GCKeyCodeKeyV) { return nes::app::key::letter_v; }
if (key_code == GCKeyCodeKeyW) { return nes::app::key::letter_w; }
if (key_code == GCKeyCodeKeyX) { return nes::app::key::letter_x; }
if (key_code == GCKeyCodeKeyY) { return nes::app::key::letter_y; }
if (key_code == GCKeyCodeKeyZ) { return nes::app::key::letter_z; }
if (key_code == GCKeyCodeEscape) { return nes::app::key::escape; }
if (key_code == GCKeyCodeHyphen) { return nes::app::key::dash; }
if (key_code == GCKeyCodeEqualSign) { return nes::app::key::equal; }
if (key_code == GCKeyCodeDeleteOrBackspace) { return nes::app::key::backspace; }
if (key_code == GCKeyCodeTab) { return nes::app::key::tab; }
if (key_code == GCKeyCodeReturnOrEnter) { return nes::app::key::enter; }
if (key_code == GCKeyCodeSemicolon) { return nes::app::key::semicolon; }
if (key_code == GCKeyCodeQuote) { return nes::app::key::apostrophe; }
if (key_code == GCKeyCodeBackslash) { return nes::app::key::backslash; }
if (key_code == GCKeyCodeComma) { return nes::app::key::comma; }
if (key_code == GCKeyCodePeriod) { return nes::app::key::period; }
if (key_code == GCKeyCodeSlash) { return nes::app::key::slash; }
if (key_code == GCKeyCodeSpacebar) { return nes::app::key::space; }
if (key_code == GCKeyCodeCapsLock) { return nes::app::key::caps_lock; }
if (key_code == GCKeyCodeOpenBracket) { return nes::app::key::bracket_open; }
if (key_code == GCKeyCodeCloseBracket) { return nes::app::key::bracket_close; }
if (key_code == GCKeyCodeLeftControl) { return nes::app::key::control_left; }
if (key_code == GCKeyCodeRightControl) { return nes::app::key::control_right; }
if (key_code == GCKeyCodeLeftShift) { return nes::app::key::shift_left; }
if (key_code == GCKeyCodeRightShift) { return nes::app::key::shift_right; }
if (key_code == GCKeyCodeLeftAlt) { return nes::app::key::alt_left; }
if (key_code == GCKeyCodeRightAlt) { return nes::app::key::alt_right; }
if (key_code == GCKeyCodeLeftArrow) { return nes::app::key::arrow_left; }
if (key_code == GCKeyCodeRightArrow) { return nes::app::key::arrow_right; }
if (key_code == GCKeyCodeUpArrow) { return nes::app::key::arrow_up; }
if (key_code == GCKeyCodeDownArrow) { return nes::app::key::arrow_down; }
if (key_code == GCKeyCodeF1) { return nes::app::key::f1; }
if (key_code == GCKeyCodeF2) { return nes::app::key::f2; }
if (key_code == GCKeyCodeF3) { return nes::app::key::f3; }
if (key_code == GCKeyCodeF4) { return nes::app::key::f4; }
if (key_code == GCKeyCodeF5) { return nes::app::key::f5; }
if (key_code == GCKeyCodeF6) { return nes::app::key::f6; }
if (key_code == GCKeyCodeF7) { return nes::app::key::f7; }
if (key_code == GCKeyCodeF8) { return nes::app::key::f8; }
if (key_code == GCKeyCodeF9) { return nes::app::key::f9; }
if (key_code == GCKeyCodeF10) { return nes::app::key::f10; }
if (key_code == GCKeyCodeF11) { return nes::app::key::f11; }
if (key_code == GCKeyCodeF12) { return nes::app::key::f12; }
return std::nullopt;
}
};
class input_device_controller_impl final : public nes::app::input_device_controller
{
GCExtendedGamepad* profile_;
public:
explicit input_device_controller_impl(GCExtendedGamepad* profile)
: profile_{ profile }
{
}
auto is_reliable() const -> bool override { return true; }
auto get_controller() const -> GCController* { return [profile_ controller]; }
auto get_name() const -> std::string_view override { return [[get_controller() vendorName] UTF8String]; }
auto get_index() const -> index override
{
switch ([get_controller() playerIndex])
{
case GCControllerPlayerIndex1:
return index::player_1;
case GCControllerPlayerIndex2:
return index::player_2;
case GCControllerPlayerIndex3:
case GCControllerPlayerIndex4:
case GCControllerPlayerIndexUnset:
break;
}
return index::unused;
}
auto set_index(index idx) -> void override
{
switch (idx)
{
case index::unused:
[get_controller() setPlayerIndex:GCControllerPlayerIndexUnset];
break;
case index::player_1:
[get_controller() setPlayerIndex:GCControllerPlayerIndex1];
break;
case index::player_2:
[get_controller() setPlayerIndex:GCControllerPlayerIndex2];
break;
}
}
auto read_buttons() -> nes::sys::button_mask override
{
auto res = nes::sys::button_mask{};
if ([[[profile_ dpad] up] isPressed]) { res.add(nes::sys::buttons::up); }
if ([[[profile_ dpad] down] isPressed]) { res.add(nes::sys::buttons::down); }
if ([[[profile_ dpad] left] isPressed]) { res.add(nes::sys::buttons::left); }
if ([[[profile_ dpad] right] isPressed]) { res.add(nes::sys::buttons::right); }
if ([[profile_ buttonA] isPressed]) { res.add(nes::sys::buttons::a); }
if ([[profile_ buttonB] isPressed]) { res.add(nes::sys::buttons::b); }
if ([[profile_ leftTrigger] isPressed]) { res.add(nes::sys::buttons::select); }
if ([[profile_ rightTrigger] isPressed]) { res.add(nes::sys::buttons::start); }
return res;
}
};
} // namespace
@implementation Scene
{
std::unique_ptr<display_impl> _display;
std::unique_ptr<input_device_keyboard_impl> _keyboard;
std::vector<std::unique_ptr<input_device_controller_impl>> _controllers;
std::unique_ptr<nes::app::application> _app;
std::optional<NSTimeInterval> _lastTimestamp;
}
- (instancetype)init
{
self = [super initWithSize:CGSizeMake(nes::display::width, nes::display::height)];
if (self)
{
auto node = [[SKSpriteNode alloc] init];
[node setAnchorPoint:CGPointZero];
[node setSize:[self size]];
[self setScaleMode:SKSceneScaleModeAspectFit];
[self addChild:node];
_display = std::make_unique<display_impl>(node);
_keyboard = std::make_unique<input_device_keyboard_impl>([[GCKeyboard coalescedKeyboard] keyboardInput]);
_app = std::make_unique<nes::app::application>(*_display, *_keyboard);
for (GCController* controller in [GCController controllers])
{
auto gamepad = [controller extendedGamepad];
if (gamepad)
{
auto adapter = std::make_unique<input_device_controller_impl>(gamepad);
_app->add_controller(*adapter);
_controllers.emplace_back(std::move(adapter));
}
}
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(handleKeyboardConnected:)
name:GCKeyboardDidConnectNotification
object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(handleControllerConnected:)
name:GCControllerDidConnectNotification
object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(handleControllerDisconnected:)
name:GCControllerDidDisconnectNotification
object:nil];
}
return self;
}
- (void)dealloc
{
[[NSNotificationCenter defaultCenter] removeObserver:self];
}
- (void)keyUp:(NSEvent*)event
{
// Handled by Game Controller
}
- (void)keyDown:(NSEvent*)event
{
// Handled by Game Controller
}
- (void)update:(NSTimeInterval)currentTime
{
auto const lastTimestamp = _lastTimestamp.value_or(currentTime);
_lastTimestamp = currentTime;
auto deltaMicroseconds = static_cast<nes::u64>((currentTime - lastTimestamp) * 1000. * 1000.);
deltaMicroseconds = std::min(deltaMicroseconds, nes::u64{ 50000 });
_app->frame(std::chrono::microseconds{ deltaMicroseconds });
}
- (void)handleKeyboardConnected:(NSNotification*)notification
{
_keyboard->set_profile([[GCKeyboard coalescedKeyboard] keyboardInput]);
}
- (void)handleControllerConnected:(NSNotification*)notification
{
auto controller = (GCController*)[notification object];
auto gamepad = [controller extendedGamepad];
if (gamepad)
{
auto adapter = std::make_unique<input_device_controller_impl>(gamepad);
_app->add_controller(*adapter);
_controllers.emplace_back(std::move(adapter));
}
}
- (void)handleControllerDisconnected:(NSNotification*)notification
{
auto controller = (GCController*)[notification object];
for (auto i = _controllers.size(); i > 0; --i)
{
auto& adapter = *_controllers[i - 1];
if (adapter.get_controller() == controller)
{
_app->remove_controller(adapter);
_controllers.erase(_controllers.begin() + static_cast<int>(i - 1));
}
}
}
@end
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