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UN SPRITE DANS L’ESPACE - DU PLAN AU VOLUME
GAME CAMP - LILLE, FRANCE - 19 JUIN 2018
⚠ WORK IN PROGRESS ⚠
COMMENT EST-ON PASSE DE ÇA
3
À ÇA ?
L’ÉQUIPE
4
L’ÉQUIPE
CHRISTOPHE SAUVEUR
▸ Développeur bi-classé infographiste
▸ 15 ans d’XP
▸ 2014

Co-fondateur du studio Cheese Burgames
▸ Fin 2017

Lead Developer Unity C#

au sein du studio Alt Shift
▸ christophe.sauveur@altshift.fr
5
L’ÉQUIPE
LE STUDIO ALT SHIFT
▸ 2010

Fondation du studio à Montpellier
▸ 2013

Sortie de Besyde

MMO géolocalisé
▸ 2017

Sortie de Not Not sur mobile

Gros succès (9 millions de téléchargements)
▸ Fin 2018

Sortie prévue de Crying Suns
▸ Effectif actuel

8 personnes + quelques free-lances

6
« When FTL Meets Foundation »
7
ROGUE-LITE NARRATIF…
9
DANS UNE GALAXIE À L’AGONIE…
10
AUX COMBATS TACTIQUES TEMPS RÉEL À PAUSE ACTIVE !
NOS SOUHAITS
NOS SOUHAITS
PIXEL ART DÉCOMPLEXÉ
▸ Le pixel au coeur de la
direction artistique
▸ Sans s’y limiter
13
NOS SOUHAITS
VAISSEAUX AMIRAUX GIGANTESQUES
▸ Le joueur est un amiral
▸ Il contrôle une flotte depuis son vaisseau
▸ La différence de taille et le gigantisme

doivent se ressentir
14
NOS SOUHAITS
IMMENSITÉ DE L’ESPACE
▸ Avoir la sensation d’évoluer

dans une vaste galaxie
▸ Chaque choix est une question de vie

ou de mort
15
Gameplay tactique

à pause active
Vue de dessus

avec grille hexagonale
Lisibilité

de gameplay
CONTRAINTES 16
EVOLUTIONS
PROTOTYPE PRÉ-PRODUCTION
18
(Printemps 2017)
PREMIÈRE VERSION SKINÉE
19
(Octobre 2017)
EVOLUTIONS
AU DÉPART, IL Y AVAIT LA PERSPECTIVE ABSTRAITE…
20
EVOLUTIONS
REDONNER UNE COHÉRENCE…
21
… MAIS TOUJOURS PAS DE VOLUME
EVOLUTIONS
SIMULER UN VOLUME - Multi-Layered Sprite
▸ Arrivée d’un nouvel illustrateur :

Louis-Julien BERTHE (@Skaz_)
▸ Proposition d’utiliser une parallaxe

pour simuler une impression de volume
22
EVOLUTIONS
SOLUTION POLYVALENTE
23
EVOLUTIONS
RENDU DANS CRYING SUNS
24
DU VOLUME VISIBLE…
MAIS TOUJOURS DIFFICILE DE VISUALISER LA DIFFÉRENCE DE PROFONDEUR
25
MULTI-LAYERED SPRITE IN-GAME
26
(Mars 2018)
EVOLUTIONS
PROBLÉMATIQUE DE LISIBILITÉ
▸ Pour bien faire comprendre au joueur quel est son camp, nous avons incliné la
grille
▸ En bonus, la perspective donnait plus de profondeur aux vaisseaux amiraux
▸ Mais d’autres problèmes sont apparus…
27
28
29
EVOLUTIONS
MULTI-LAYERED SPRITE - PROS / CONS
▸ Simple à produire
▸ Léger en mémoire
▸ Utilisation via une simple
parallaxe…
▸ … ou dans l’espace 3D
▸ « Interieur » du volume visible
30
EVOLUTIONS
MULTI-LAYERED SPRITE - PROS / CONS
▸ Simple à produire
▸ Léger en mémoire
▸ Utilisation via une simple
parallaxe…
▸ … ou dans l’espace 3D
▸ « Interieur » du volume visible

▸ Beaucoup d’overdraw
▸ Inclinaison limitée
▸ « Intérieur » du volume visible
(aussi)
31
MULTI-LAYERED SPRITE + EXTRUSION
(OU COMMENT FAIRE DU VOXEL SANS VOXEL)
33
34
35
EVOLUTIONS
POURQUOI PAS DIRECTEMENT EN 3D ?
▸ Feeling pixel art à préserver
▸ Ressources limitées et pas de modeleur 3D dans l’équipe
▸ Processus itératif issu d’une base 2D
▸ Voxels ?
▸ Avec notre méthode, les « cubes » peuvent avoir des couleurs différentes
selon les faces
▸ Ajout de détails rapidement avec des sprites positionnés en complément
36
MISE EN LUMIÈRE
MISE EN LUMIÈRE
CONTRAINTES
▸ Sprites non éclairés par défaut dans Unity
▸ Souhait d’avoir un feeling pixel art sur la lumière également
▸ Beaucoup d’éléments produisant des lumières dynamiques
▸ Gestion des lumières en 2D (pour les cutscenes)…
▸ … et en 3D pour les phases de combat et d’exploration
38
MISE EN LUMIÈRE
SOLUTION - MODÈLE DE LUMIÈRE SPÉCIFIQUE
39
40
RÉSULTAT ACTUELENCORE EN ÉVOLUTION
42
EN CONCLUSION
▸ Parallaxe simple suffisante pour simuler un volume

(très utile notamment sur des moteurs 2D comme Game Maker)
▸ Mix Multi-Layered Sprite + Extrusion efficace dans notre workflow et en accord
avec la DA de Crying Suns
▸ Moins coûteux qu’une modélisation complexe
43
MERCI !
DES QUESTIONS ?
cryingsuns.com
fb.me/cryingsuns

twitter.com/CryingSuns

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Un sprite dans l'espace : Du plan au volume dans crying Suns - Christophe Sauveur - Game Camp France 2018