Presentation on theme: "User Interfaces By Mathieu Leduc. What is the User Interface(UI)? Knows about any input/output hardware Translates player actions into actions in the."— Presentation transcript:
What is the User Interface(UI)? Knows about any input/output hardware Translates player actions into actions in the game world Presents data needed by the player in the current situation of the game world
General Principles Be consistent Give good feedback The player is in control Limit the steps to take action Allow easy reversal of actions Minimize physical stress Don’t strain short-term memory Group up related controls Provide shortcuts for experienced players
What the Player needs to know Where am I? What am I doing right now? What challenges am I facing? Did my action fail or succeed? What do I need to play successfully? Am I in danger of losing? Am I making progress? What should I do next? How did I do?
What the Player wants to do Move Look around Interact physically with the world Pick up/drop objects Manipulate fixed objects Construct/destroy objects Give orders to units/characters Conversation with NPC Customize vehicle/character
What the Player wants to do (cont.) Talk to friends online Pause (even if temporary) Set up game options Save the game Exit the game
Define gameplay modes Define primary gameplay mode (camera model, interaction model, gameplay style) Define all the modes used in the game Understand how game moves from mode to mode (flowchart)
Designing gameplay user interface 1.Choosing the screen layout 2.Select visual elements that transfer info to the player 3.Define inputs
Choosing the screen layout Subset of screen Overlay with the main view Find a balance between amount of space for main view and for feedback elements.
Telling the player what they need to know What critical info needs to be showed to the player? Appropriate feedback elements Optional info which can be displayed
Letting the player do what they want to do Devise control mechanisms to allow player to interact with game Ex: Move camera, participate in story, express themselves, talk to others Map input devices to player input (Use similar games to help you map)
Camera Models – First Person Perspective Advantages: – Don’t display avatar often, save money on animations/textures – No AI for camera, all player controlled – Easier to aim weapons; Screen not blocked by avatar and no need to correct for perspective differences – May allow easier interaction with environment Disadvantages: – Can not see avatar, customization not as enjoyable – Hard to display body language and facial expressions, less immersion – No use of camera for dramatic effect – Harder to perform some manoeuvers (jumping off cliffs) – Rapid movements can create motion sickness in some players
Camera Models - Third Person Perspective Camera Behaviours: – Can follow avatar direction, mostly used in flight simulators, can cause motion sickness – Camera slowly turns to face same direction as avatar (Super Mario 64) – Camera orients itself behind only after avatar has stopped moving, less common
Cameral Models (cont.) Active/Passive: Allow player to orient camera themselves Intruding landscapes: – Make objects semi-transparent – Move camera up so it is behind player and wall Once the player moves, return camera to original position smoothly
Aerial Perspective 1.Aerial 2.Top Down 3.Free Roaming 4.Context Sensitive
Top Down Can only see top of buildings Player feels distanced from action Easy to implement using 2D graphics
Isometric About 30 ~ 45 degrees from horizon If player can control camera, draw correct number of tiles for objects Allows player to see more of buildings and units, feels closer to action
Free Roaming Allows user to explore world at their leisure Difficult to implement camera controls and teach them to player
Context Sensitive Camera moves intelligently to follow action Generally used in avatar/party based games Must define every angle for every possible character position Can allow designer to create rich visual experience for player
Other 2D Options Single screen: Whole world displayed, camera does not move Side Scrolling Top Scrolling: Jamestown Painted Backgrounds
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