43 lines
1.4 KiB
Rust
43 lines
1.4 KiB
Rust
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pub const ZOOM_MIN: f32 = 200.0;
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pub const ZOOM_MAX: f32 = 2000.0;
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/// Z-axis range for starfield stars
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/// This does not affect scale.
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pub const STARFIELD_Z_MIN: f32 = 100.0;
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pub const STARFIELD_Z_MAX: f32 = 200.0;
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/// Size range for starfield stars, in game units.
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/// This is scaled for zoom, but NOT for distance.
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pub const STARFIELD_SIZE_MIN: f32 = 0.2;
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pub const STARFIELD_SIZE_MAX: f32 = 1.8;
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/// Size of a square starfield tile, in game units.
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/// A tile of size STARFIELD_Z_MAX * screen-size-in-game-units
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/// will completely cover a (square) screen. This depends on zoom!
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///
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/// Use a value smaller than zoom_max for debug.
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pub const STARFIELD_SIZE: u64 = STARFIELD_Z_MAX as u64 * ZOOM_MAX as u64;
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/// Average number of stars per game unit
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pub const STARFIELD_DENSITY: f64 = 0.01;
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/// Number of stars in one starfield tile
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/// Must fit inside an i32
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pub const STARFIELD_COUNT: u64 = (STARFIELD_SIZE as f64 * STARFIELD_DENSITY) as u64;
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/// Name of starfield texture
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pub const STARFIELD_TEXTURE_NAME: &'static str = "starfield";
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/// Root directory of game content
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pub const CONTENT_ROOT: &'static str = "./content";
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/// Root directory of game textures
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pub const TEXTURE_ROOT: &'static str = "./assets/render";
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// We can draw at most this many sprites on the screen.
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// TODO: compile-time option or config file
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pub const SPRITE_INSTANCE_LIMIT: u64 = 500;
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// Must be small enough to fit in an i32
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pub const STARFIELD_INSTANCE_LIMIT: u64 = STARFIELD_COUNT * 24;
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