117 lines
3.0 KiB
Rust
117 lines
3.0 KiB
Rust
use crate::content;
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use cgmath::{Deg, Point2, Point3, Vector2};
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/// Instructions to create a new particle
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pub struct ParticleBuilder {
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/// The sprite to use for this particle
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pub sprite: content::SpriteHandle,
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/// This object's center, in world coordinates.
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pub pos: Point2<f32>,
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/// This particle's velocity, in world coordinates
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pub velocity: Vector2<f32>,
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/// This particle's angle, in world coordinates
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pub angle: Deg<f32>,
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/// This particle's lifetime, in seconds
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pub lifetime: f32,
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/// The size of this particle,
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/// given as height in world units.
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pub size: f32,
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}
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/// The location of a UI element, in one of a few
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/// possible coordinate systems.
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///
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/// Positive Y always points up,
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/// positive X always points right.
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#[derive(Debug, Clone)]
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pub enum AnchoredUiPosition {
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/// Position of this sprite's center,
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/// relative to the nw corner of the window.
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NwC(Point2<f32>),
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/// Position of this sprite's nw corner,
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/// relative to the nw corner of the window.
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NwNw(Point2<f32>),
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/// Position of this sprite's ne corner,
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/// relative to the nw corner of the window.
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NwNe(Point2<f32>),
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/// Position of this sprite's sw corner,
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/// relative to the nw corner of the window.
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NwSw(Point2<f32>),
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/// Position of this sprite's se corner,
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/// relative to the nw corner of the window.
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NwSe(Point2<f32>),
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}
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/// A sprite that represents a ui element
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#[derive(Debug, Clone)]
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pub struct UiSprite {
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/// The sprite to draw
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pub sprite: content::SpriteHandle,
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/// This object's position, in logical (dpi-adjusted) pixels
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pub pos: AnchoredUiPosition,
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/// This sprite's color will be multiplied by this value.
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/// If this is None, color will not be changed.
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pub color: Option<[f32; 4]>,
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/// The size of this sprite, in logical (dpi-adjusted) pixels
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pub dimensions: Point2<f32>,
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/// This sprite's rotation, measured ccw
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pub angle: Deg<f32>,
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}
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/// A sprite that represents a world object:
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/// Ships, planets, debris, etc
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#[derive(Debug, Clone)]
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pub struct ObjectSprite {
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/// The sprite to draw
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pub sprite: content::SpriteHandle,
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/// This object's center, in world coordinates.
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pub pos: Point3<f32>,
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/// The size of this sprite,
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/// given as height in world units.
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pub size: f32,
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/// This sprite's rotation
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/// (relative to north, measured ccw)
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/// Note that this is different from the angle used by our physics system.
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pub angle: Deg<f32>,
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/// Sprites that should be drawn relative to this sprite.
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pub children: Option<Vec<ObjectSubSprite>>,
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}
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/// A sprite that is drawn relative to an ObjectSprite.
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#[derive(Debug, Clone)]
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pub struct ObjectSubSprite {
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/// The sprite to draw
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pub sprite: content::SpriteHandle,
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/// This object's position, in world coordinates.
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/// This is relative to this sprite's parent.
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pub pos: Point3<f32>,
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/// The size of this sprite,
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/// given as height in world units.
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pub size: f32,
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/// This sprite's rotation
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/// (relative to north, measured ccw)
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/// Just as position, this is relative to this
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/// subsprite's parent sprite.
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pub angle: Deg<f32>,
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}
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