Implement hitstun and knockback.

src/math/int.rs

@@ -4,7 +4,7 @@ pub type FGWide = fixed::FixedI128<fixed::types::extra::U32>;
 /// Angle conversions for the game's Q16.16 fixed-point values.
 pub trait FGi32Ext {
     fn to_radians(self) -> FGi32;
-    fn sin_cos(self) -> (FGi32, FGi32);
+    fn sin_cos_rads(self) -> (FGi32, FGi32);
 }
 
 impl FGi32Ext for FGi32 {
@@ -12,7 +12,7 @@ impl FGi32Ext for FGi32 {
         FGi32::from_num(FGWide::from_num(self) * FGWide::lit("0.01745329251994329576923690768489"))
     }
 
-    fn sin_cos(self) -> (FGi32, FGi32) {
+    fn sin_cos_rads(self) -> (FGi32, FGi32) {
         const PI: FGi32 = FGi32::lit("3.14159265358979323846");
         const HALF_PI: FGi32 = FGi32::lit("1.57079632679489661923");
         const TWO_PI: FGi32 = FGi32::lit("6.28318530717958647692");

src/math/segment.rs

@@ -130,9 +130,6 @@ impl FGSegment2d {
         let t = (s2_x * (p0_y - p2_y) - s2_y * (p0_x - p2_x)) / denom;
 
         if s >= FGWide::ZERO && s <= FGWide::ONE && t >= FGWide::ZERO && t <= FGWide::ONE {
-            if self.left_normal().dot(rhs.point2() - rhs.point1()) >= FGi32::ZERO {
-                return None;
-            }
             Some(FGVec2::new(
                 FGi32::from_num(p0_x + t * s1_x),
                 FGi32::from_num(p0_y + t * s1_y),