made vec2 and rect nicer :)

src/image.rs

@@ -74,11 +74,7 @@ impl Image {
         //todo: write proper implementation later
         for i in Vec2::zero().iter_to(src_rect.size) {
             //todo: implement better(very stupid to do per pixel)
-            if i.x + pos.x >= 0
+            if self.size.to_rect().contains(i + pos) {
-                && i.y + pos.y >= 0
-                && i.x + pos.x < self.size.x
-                && i.y + pos.y < self.size.y
-            {
                 let p = image.get_pixel(i + src_rect.pos);
                 if p > 0 {
                     self.set_pixel(i + pos, p);

src/rect.rs

@@ -2,16 +2,25 @@ use crate::vec2::Vec2;
 use num::{Num, ToPrimitive};
 
 #[derive(Copy, Clone)]
-pub struct Rect<T: Num + Copy + ToPrimitive> {
+pub struct Rect<T: Num + Copy + ToPrimitive + PartialOrd> {
     pub pos: Vec2<T>,
     pub size: Vec2<T>,
 }
 
-impl<T: Num + Copy + ToPrimitive> Rect<T> {
+impl<T: Num + Copy + ToPrimitive + PartialOrd> Rect<T> {
     pub fn new(x: T, y: T, w: T, h: T) -> Rect<T> {
         Rect {
             pos: Vec2 { x, y },
             size: Vec2 { x: w, y: h },
         }
     }
+
+    pub fn pos2(&self) -> Vec2<T> {
+        self.pos + self.size
+    }
+
+    pub fn contains(&self, point: Vec2<T>) -> bool {
+        let p2 = self.pos2();
+        point.x >= self.pos.x && point.y >= self.pos.y && point.x < p2.x && point.y < p2.y
+    }
 }

src/tileset.rs

@@ -20,23 +20,21 @@ impl Tileset {
             x: img.size().x / tile_count.x,
             y: img.size().y / tile_count.y,
         };
-        for y in 0..tile_count.y {
+        for tile in Vec2::zero().iter_to(tile_count) {
-            for x in 0..tile_count.x {
             let mut image = Image::new(size);
             image.draw_image_partial(
                 Vec2::zero(),
                 &img,
                 Rect {
                     pos: Vec2 {
-                            x: x * size.x,
+                        x: tile.x * size.x,
-                            y: y * size.y,
+                        y: tile.y * size.y,
                     },
                     size,
                 },
             );
             images.push(image);
         }
-        }
         Tileset {
             count: images.len() as i32,
             size,
@@ -48,4 +46,8 @@ impl Tileset {
     pub fn get(&self, idx: i32) -> &Image {
         &self.images[idx as usize]
     }
+
+    pub fn tile_size(&self) -> Vec2<i32> {
+        self.size
+    }
 }

src/vec2.rs

@@ -1,23 +1,23 @@
+use crate::Rect;
 use num::{Num, ToPrimitive};
 use std::cmp::Ordering;
 use std::cmp::Ordering::{Greater, Less};
-use std::iter::Step;
 use std::ops::{Add, AddAssign, Range, Sub, SubAssign};
 use Ordering::Equal;
 
 #[derive(Copy, Clone)]
-pub struct Vec2<T: Num + Copy + ToPrimitive> {
+pub struct Vec2<T: Num + Copy + ToPrimitive + PartialOrd> {
     pub x: T,
     pub y: T,
 }
 
-pub struct Vec2Iter<T: Num + Copy + ToPrimitive> {
+pub struct Vec2Iter<T: Num + Copy + ToPrimitive + PartialOrd> {
     start: Vec2<T>,
     end: Vec2<T>,
     current: Vec2<T>,
 }
 
-impl<T: Num + Copy + ToPrimitive> Vec2<T> {
+impl<T: Num + Copy + ToPrimitive + PartialOrd> Vec2<T> {
     //pub static
     pub fn zero() -> Self {
         Vec2 {
@@ -37,12 +37,20 @@ impl<T: Num + Copy + ToPrimitive> Vec2<T> {
             },
         }
     }
+
     pub fn size(&self) -> usize {
         (self.x * self.y).to_usize().unwrap()
     }
+
+    pub fn to_rect(self) -> Rect<T> {
+        Rect {
+            pos: Self::zero(),
+            size: self,
+        }
+    }
 }
 
-impl<T: Num + Copy + ToPrimitive + Default> Default for Vec2<T> {
+impl<T: Num + Copy + ToPrimitive + PartialOrd + Default> Default for Vec2<T> {
     fn default() -> Self {
         Vec2 {
             x: T::default(),
@@ -51,7 +59,7 @@ impl<T: Num + Copy + ToPrimitive + Default> Default for Vec2<T> {
     }
 }
 
-impl<T: Num + Copy + ToPrimitive> PartialEq for Vec2<T> {
+impl<T: Num + Copy + ToPrimitive + PartialOrd> PartialEq for Vec2<T> {
     fn eq(&self, other: &Self) -> bool {
         self.x == other.x && self.y == other.y
     }
@@ -73,7 +81,7 @@ impl<T: Num + Copy + ToPrimitive + PartialOrd> Iterator for Vec2Iter<T> {
     }
 }
 
-impl<T: Num + Copy + ToPrimitive> Add for Vec2<T> {
+impl<T: Num + Copy + ToPrimitive + PartialOrd> Add for Vec2<T> {
     type Output = Self;
 
     fn add(self, rhs: Self) -> Self::Output {
@@ -84,7 +92,7 @@ impl<T: Num + Copy + ToPrimitive> Add for Vec2<T> {
     }
 }
 
-impl<T: Num + Copy + ToPrimitive> Sub for Vec2<T> {
+impl<T: Num + Copy + ToPrimitive + PartialOrd> Sub for Vec2<T> {
     type Output = Self;
 
     fn sub(self, rhs: Self) -> Self::Output {
@@ -95,14 +103,14 @@ impl<T: Num + Copy + ToPrimitive> Sub for Vec2<T> {
     }
 }
 
-impl<T: Num + Copy + ToPrimitive + AddAssign> AddAssign for Vec2<T> {
+impl<T: Num + Copy + ToPrimitive + PartialOrd + AddAssign> AddAssign for Vec2<T> {
     fn add_assign(&mut self, rhs: Self) {
         self.x += rhs.x;
         self.y += rhs.y;
     }
 }
 
-impl<T: Num + Copy + ToPrimitive + SubAssign> SubAssign for Vec2<T> {
+impl<T: Num + Copy + ToPrimitive + PartialOrd + SubAssign> SubAssign for Vec2<T> {
     fn sub_assign(&mut self, rhs: Self) {
         self.x -= rhs.x;
         self.y -= rhs.y;