rust/landgen/src/template_based.rs
author unC0Rr
Fri, 02 Nov 2018 14:29:24 +0100
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child 14116 b2feb190e4bc
permissions -rw-r--r--
- Add methods to work with Rect as box - Refactor, tests, fixes
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use integral_geometry::{Point, Size};
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use land2d::Land2D;
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use LandGenerationParameters;
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use LandGenerator;
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use outline::OutlinePoints;
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use outline_template::OutlineTemplate;
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pub struct TemplatedLandGenerator {
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    outline_template: OutlineTemplate,
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}
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impl TemplatedLandGenerator {
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    pub fn new(outline_template: OutlineTemplate) -> Self {
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        Self { outline_template }
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    }
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}
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impl LandGenerator for TemplatedLandGenerator {
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    fn generate_land<T: Copy + PartialEq, I: Iterator<Item = u32>>(
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        &self,
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        parameters: LandGenerationParameters<T>,
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        random_numbers: &mut I,
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    ) -> Land2D<T> {
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        let mut land = Land2D::new(self.outline_template.size, parameters.basic);
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        let mut points =
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            OutlinePoints::from_outline_template(&self.outline_template, land.play_box(), land.size(), random_numbers);
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        // mirror
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        if self.outline_template.can_mirror {
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            if let Some(b) = random_numbers.next() {
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                if b & 1 != 0 {
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                    points
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                        .iter_mut()
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                        .for_each(|p| p.x = land.width() as i32 - 1 - p.x);
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                }
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            }
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        }
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        // flip
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        if self.outline_template.can_flip {
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            if let Some(b) = random_numbers.next() {
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                if b & 1 != 0 {
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                    points
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                        .iter_mut()
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                        .for_each(|p| p.y = land.height() as i32 - 1 - p.y);
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                }
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            }
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        }
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        points.distort(random_numbers);
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        points.draw(&mut land, parameters.zero);
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        for p in &points.fill_points {
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            land.fill(*p, parameters.zero, parameters.zero)
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        }
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        points.draw(&mut land, parameters.basic);
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        land
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    }
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}