In-game calculator

[nourgaser]

• [x] Design

  • The arithmetic elements will be:
    • Numbers.
    • SI prefixes: p, n, μ, m, k, M, G.
    • SI units: V, A, W, Ω, F, Hz, s, and auto. Others may be added later if needed.
    • Arithmetic operators/functions: +, -, *, /, √, ^, Others may be added later if needed.
    • Unknown value, denoted by ?. Allowed only once in the expression.
    • Grouping elements: (, ). The calculator should do its best to automatically detect the intended use of the expression so that the player doesn't need to make excessive use of grouping elements.
      • Number + prefix + unit from component: A button 'C' will open a pop-up with a filterable list of all component properties in the level. Each entry should be: LevelComponent.Sprite + LevelComponent.Name + LevelComponent.PropertyN.Name,Multiplier,Value. When the player presses enter or clicks on an entry, its inserted into the expression (just a number followed by the prefix and unit).
  • All component physical properties in the game should map to one of the supported SI units.
  • The result of the ? element's unit must always be automatically calculable based on the operations and the units in the expression (even if it doesn't make any sense). (ie. A * Ω = V, V * A = W, Ω * Ω = Ω², A² * Ω = A²Ω, etc...)
  • It should consist of
    • Header (title + close button)
    • Body/frame.
    • Display, which holds the current expression, and a cursor movable by the arrow keys, or by clicking.
    • Buttons section, with buttons for all of the arithmetic elements and a keyboard shortcut for each button.
    • Consider persistence features like 'save/favorite expression', and history.
  • UI Design
    • WiP

• Implementation

  • [x] Evaluate expressions with only numbers and a single variable.
  • [x] Support SI prefixes.
  • [x] Support SI units.
  • Create the 4 pop-up search-select menus
    • [ ] Insert formula.
    • [ ] Insert SI unit.
    • [ ] Insert SI prefix.
    • [ ] Insert numerical value, prefix, and unit from component property.
  • [x] Make all the buttons interactable.
  • [ ] Add shortcuts for all the buttons and navigational actions so that the calculator is fully usable by keyboard only.
  • [x] Add editor behavior and UI button to spawn/destroy/transform the calculator.

[nourgaser]

[nourgaser]

@Hazem-Gamall let's say the SI units are fine for now, we'll improve/fix them later. So the remaining tasks are only keyboard shortcuts and the 4 pop-up menus.