Alien Invasion

Uno sparatutto in stile arcade classico di NiliusJulius, in gara alla Game Boy Competition 2021. Salva la Terra: sposta il cannone lungo il fondo dello schermo e abbatti gli alieni invasori. Alcuni nemici più grossi vanno colpiti due volte. L'autore è riuscito a mettere una quarantina di nemici sullo schermo impilando due alieni in ogni sprite hardware.

Comandi

Touch: croce direzionale a sinistra, A e B a destra (puoi far scivolare il pollice dall'uno all'altro), SELECT in basso a sinistra, START in basso a destra. Più dita insieme funzionano.
Gamepad USB o Bluetooth: croce o levetta sinistra; A e Y = A; B e X = B; Start; Back/View = Select.
Tastiera USB: frecce o WASD; Spazio/X/Invio = A; Z/C/Backspace = B; P o Tab = Start; Esc = Select.
MENU (in alto a sinistra), i dorsali L/R o il tasto Guide del gamepad mettono in pausa.

Nel gioco

START avvia la partita. Sinistra/destra spostano il cannone, A spara.

Il menu di pausa

Continua, Ricomincia (spegne e riaccende la console), Zoom 4x o 3x (più piccolo, lascia più spazio ai comandi), Colori (verde, grigio, Pocket, colori stile Game Boy Color) e Esci chiude il gioco. Zoom e colori restano memorizzati. Il gesto indietro del sistema apre il menu; ripetuto, esce.

Audio

Il suono è emulato (i quattro canali del Game Boy). Se un'altra app sta usando l'altoparlante (per esempio Musica), il gioco parte muto e riprova ogni pochi secondi.

Crediti e licenze

Alien Invasion di NiliusJulius (FerrantePescara su Homebrew Hub), GPL-3.0.

La ROM è quella originale, non modificata, dal database Homebrew Hub (https://hh.gbdev.io/game/alien-invasion).

Emulatore: Peanut-GB di Mahyar Koshkouei, audio MiniGB APU di Alex Baines e Mahyar Koshkouei (licenza MIT).

Testi delle licenze:

Alien Invasion

https://github.com/NiliusJulius/Alien-Invasion

Licenza GNU General Public License, versione 3 (GPL-3.0). Il codice sorgente completo è nel repository indicato sopra.

Peanut-GB

https://github.com/deltabeard/Peanut-GB

Copyright (c) 2018-2023 Mahyar Koshkouei

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
associated documentation files (the "Software"), to deal in the Software without restriction,
including without limitation the rights to use, copy, modify, merge, publish, distribute,
sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or
substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT
NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT
OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

MiniGB APU

https://github.com/deltabeard/Peanut-GB/tree/master/examples/sdl2/minigb_apu

Copyright (c) 2017 Alex Baines
Copyright (c) 2019 Mahyar Koshkouei

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
associated documentation files (the "Software"), to deal in the Software without restriction,
including without limitation the rights to use, copy, modify, merge, publish, distribute,
sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or
substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT
NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT
OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Alien Invasion

A classic arcade-style shooter by NiliusJulius, entered in the Game Boy Competition 2021. Save the Earth: move your cannon along the bottom of the screen and shoot the invading aliens. Some larger enemies need two hits. The author squeezed about forty enemies on screen by stacking two aliens in each hardware sprite.

Controls

Touch: D-pad on the left, A and B on the right (you can slide your thumb from one to the other), SELECT bottom left, START bottom right. Several fingers at once work.
USB or Bluetooth gamepad: D-pad or left stick; A and Y = A; B and X = B; Start; Back/View = Select.
USB keyboard: arrows or WASD; Space/X/Enter = A; Z/C/Backspace = B; P or Tab = Start; Esc = Select.
MENU (top left), the L/R shoulder buttons or the pad's Guide button pause the game.

In the game

START begins a game. Left/right move the cannon, A fires.

The pause menu

Resume, Reset (power-cycles the console), Zoom 4x or 3x (smaller, more room for the controls), Colours (green, grey, Pocket, Game Boy Color style) and Exit closes the game. Zoom and colours are remembered. The system back gesture opens the menu; twice, it exits.

Sound

Sound is emulated (the Game Boy's four channels). If another app holds the speaker (the Music app, say), the game starts muted and retries every few seconds.

Credits and licenses

Alien Invasion by NiliusJulius (FerrantePescara on Homebrew Hub), GPL-3.0.

The ROM is the original, unmodified, from the Homebrew Hub database (https://hh.gbdev.io/game/alien-invasion).

Emulator: Peanut-GB by Mahyar Koshkouei, MiniGB APU sound by Alex Baines and Mahyar Koshkouei (MIT license).

License texts:

Alien Invasion

https://github.com/NiliusJulius/Alien-Invasion

Licensed under the GNU General Public License, version 3 (GPL-3.0). The complete source code is in the repository linked above.

Peanut-GB

https://github.com/deltabeard/Peanut-GB

Copyright (c) 2018-2023 Mahyar Koshkouei

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
associated documentation files (the "Software"), to deal in the Software without restriction,
including without limitation the rights to use, copy, modify, merge, publish, distribute,
sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or
substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT
NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT
OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

MiniGB APU

https://github.com/deltabeard/Peanut-GB/tree/master/examples/sdl2/minigb_apu

Copyright (c) 2017 Alex Baines
Copyright (c) 2019 Mahyar Koshkouei

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
associated documentation files (the "Software"), to deal in the Software without restriction,
including without limitation the rights to use, copy, modify, merge, publish, distribute,
sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or
substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT
NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT
OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.