Only limit negative z velocity by gravity instead of total negative z velocity

CHANGELOG.md

@@ -80,6 +80,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Fixed a bug where the closest item would be picked up instead of a selected item.
 - Fixed a bug where camera zoom in and zoom out distance didn't match.
 - Fixed a bug where a nearby item would also be collected when collecting collectible blocks
+- Fixed a bug where firing fast projectile at a downwards angle caused them to veer off at a higher angle
 
 ## [0.7.0] - 2020-08-15
 

common/src/sys/phys.rs

@@ -41,7 +41,9 @@ fn integrate_forces(dt: f32, mut lv: Vec3<f32>, grav: f32, damp: f32) -> Vec3<f3
     // must be interpolated accordingly
     let linear_damp = (1.0 - damp.min(1.0)).powf(dt * 60.0);
 
-    lv.z = (lv.z - grav * dt).max(-80.0);
+    // TODO: investigate if we can have air friction provide the neccessary limits
+    // here
+    lv.z = (lv.z - grav * dt).max(-80.0).min(lv.z);
     lv * linear_damp
 }