flatland-client-ui 0.2.23

Engine-agnostic play client UI state (world grid, input, presentation)
Documentation 
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//! Normalized HUD layout regions (0.0–1.0 fractions of the viewport).

use crate::hud::HudViewMode;

#[derive(Debug, Clone, Copy, PartialEq)]
pub struct NormRect {
    pub x: f32,
    pub y: f32,
    pub w: f32,
    pub h: f32,
}

impl NormRect {
    pub const fn new(x: f32, y: f32, w: f32, h: f32) -> Self {
        Self { x, y, w, h }
    }

    pub fn pixel_rect(self, width: f32, height: f32) -> (f32, f32, f32, f32) {
        (
            self.x * width,
            self.y * height,
            self.w * width,
            self.h * height,
        )
    }
}

#[derive(Debug, Clone, Copy, PartialEq)]
pub struct HudLayout {
    pub world: NormRect,
    pub combat: Option<NormRect>,
    pub status: Option<NormRect>,
    pub sidebar: Option<NormRect>,
    pub log: Option<NormRect>,
}

pub fn hud_layout(combat_visible: bool, mode: HudViewMode) -> HudLayout {
    match (mode, combat_visible) {
        (HudViewMode::Normal, true) => HudLayout {
            world: NormRect::new(0.0, 0.0, 1.0, 0.52),
            combat: Some(NormRect::new(0.0, 0.52, 1.0, 0.10)),
            status: Some(NormRect::new(0.0, 0.62, 1.0, 0.04)),
            sidebar: Some(NormRect::new(0.0, 0.66, 1.0, 0.27)),
            log: Some(NormRect::new(0.0, 0.93, 1.0, 0.07)),
        },
        (HudViewMode::Normal, false) => HudLayout {
            world: NormRect::new(0.0, 0.0, 1.0, 0.56),
            combat: None,
            status: Some(NormRect::new(0.0, 0.56, 1.0, 0.04)),
            sidebar: Some(NormRect::new(0.0, 0.60, 1.0, 0.33)),
            log: Some(NormRect::new(0.0, 0.93, 1.0, 0.07)),
        },
        (HudViewMode::Compact, true) => HudLayout {
            world: NormRect::new(0.0, 0.0, 1.0, 0.70),
            combat: Some(NormRect::new(0.0, 0.70, 1.0, 0.08)),
            status: Some(NormRect::new(0.0, 0.78, 1.0, 0.04)),
            sidebar: None,
            log: Some(NormRect::new(0.0, 0.82, 1.0, 0.04)),
        },
        (HudViewMode::Compact, false) => HudLayout {
            world: NormRect::new(0.0, 0.0, 1.0, 0.88),
            combat: None,
            status: Some(NormRect::new(0.0, 0.88, 1.0, 0.04)),
            sidebar: None,
            log: Some(NormRect::new(0.0, 0.92, 1.0, 0.04)),
        },
        (HudViewMode::Map, true) => HudLayout {
            world: NormRect::new(0.0, 0.0, 1.0, 0.84),
            combat: Some(NormRect::new(0.0, 0.84, 1.0, 0.10)),
            status: Some(NormRect::new(0.0, 0.94, 1.0, 0.02)),
            sidebar: None,
            log: None,
        },
        (HudViewMode::Map, false) => HudLayout {
            world: NormRect::new(0.0, 0.0, 1.0, 0.96),
            combat: None,
            status: Some(NormRect::new(0.0, 0.96, 1.0, 0.02)),
            sidebar: None,
            log: None,
        },
    }
}