User Overlay

[sourencho]

Description

System for managing and creating UI elements. See commit messages for more detail.

Four test UI elements aligned to top right, top left, bottom right and bottom left with padding.

FPS UI element on bottom right of window

Fixes

Fixes #119

Commits

[4270688] User interface overlayed over game

• You can define UI elements by extending BaseUIElement and adding them to GUIController.
• UI Elements can be aligned to the TOP_RIGHT, TOP_LEFT, BOTTOM_RIGHT and BOTTOM_LEFT parts of the window and have padding.
• Data to update the UI Elements can be passed in via the update function. GUIController will call this update in postUpdate during the game step.
• Currently all UI Elements share the same container for recieving data.
• To draw the GUI independent of the player view of the world, we created a seperate "window" view that we switch to after drawing the player view.
• We've created a TestUIElement that can be used to visual test UIElement alignment and padding. It just draws a green rectangle.

[d5141b4] Add fonts to ResourceStore

• Store/Retrieve all resources with enum keys
• Minor fixes

[1adc138] FPS UI Element

• Shows the number of updates per second on the bottom right of the client window.
• This is a good example of how to pass data to UI Elements in the update step and how to use fonts/text.