47 lines
1.2 KiB
Rust
47 lines
1.2 KiB
Rust
use sdl2::rect::Rect;
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pub struct Camera {
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x: i32,
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y: i32,
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width: u32,
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height: u32,
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bounding: Rect
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}
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impl Camera {
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pub fn new(x: i32, y: i32, width: u32, height: u32, bounding: Rect) -> Camera {
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Camera {
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x: x,
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y: y,
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width: width,
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height: height,
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bounding: bounding
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}
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}
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pub fn center(&mut self, object: &Rect) {
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let mut x = (object.x() + object.width() as i32 / 2) - (self.width as i32 / 2);
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let mut y = (object.y() + object.height() as i32 / 2) - (self.height as i32 / 2);
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if x < self.bounding.x() {
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x = self.bounding.x();
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} else if x + self.width as i32 > self.bounding.width() as i32 {
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x = (self.bounding.width() - self.width) as i32;
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}
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if y < self.bounding.y() {
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y = self.bounding.y();
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} else if y + self.height as i32 > self.bounding.height() as i32 {
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y = (self.bounding.height() - self.height) as i32;
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}
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self.x = x;
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self.y = y;
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}
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pub fn to_rect(&self) -> Rect {
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Rect::new_unwrap(self.x, self.y, self.width, self.height)
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}
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}
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