cleanup crate dependencies, fix spawning car from lane, reduce

mutability of debug_car

editor/Cargo.toml

@@ -8,7 +8,6 @@ edition = "2018"
 aabb-quadtree = "0.1.0"
 abstutil = { path = "../abstutil" }
 counter = "0.4.3"
-derivative = "1.0.0"
 derive-new = "0.5.6"
 downcast = "0.9.2"
 ezgui = { path = "../ezgui" }
@@ -17,14 +16,11 @@ geo = "0.11.0"
 geom = { path = "../geom" }
 kml = { path = "../kml" }
 map_model = { path = "../map_model" }
-multimap = "0.4.0"
 ordered-float = "1.0.1"
 pretty_assertions = "0.5.1"
-quick-xml = "0.13.1"
 # TODO Just for the DES model prototype
 rand = "0.6.5"
 rand_xorshift = "0.1.1"
-rayon = "1.0"
 serde = "1.0.87"
 serde_derive = "1.0.87"
 sim = { path = "../sim" }

editor/src/objects.rs

@@ -33,7 +33,7 @@ impl ID {
         }
     }
 
-    pub fn debug(&self, map: &Map, sim: &mut Sim, draw_map: &DrawMap) {
+    pub fn debug(&self, map: &Map, sim: &Sim, draw_map: &DrawMap) {
         match *self {
             ID::Road(id) => {
                 map.get_r(id).dump_debug();

editor/src/plugins/debug/debug_objects.rs

@@ -42,11 +42,7 @@ impl AmbientPlugin for DebugObjectsState {
 
         if let Some(id) = self.selected {
             if ctx.input.contextual_action(Key::D, "debug") {
-                id.debug(
-                    &ctx.primary.map,
-                    &mut ctx.primary.sim,
-                    &ctx.primary.draw_map,
-                );
+                id.debug(&ctx.primary.map, &ctx.primary.sim, &ctx.primary.draw_map);
             }
         }
     }

editor/src/plugins/debug/spawn_agent.rs

@@ -2,7 +2,6 @@ use crate::objects::{DrawCtx, ID};
 use crate::plugins::{BlockingPlugin, PluginCtx};
 use abstutil::Timer;
 use ezgui::{Color, GfxCtx, Key};
-use geom::Distance;
 use map_model::{
     BuildingID, IntersectionID, IntersectionType, LaneType, PathRequest, Pathfinder, Position,
     Trace, LANE_THICKNESS,
@@ -65,7 +64,7 @@ impl SpawnAgent {
                         .contextual_action(Key::F3, "spawn an agent starting here")
                 {
                     return Some(SpawnAgent {
-                        from: Source::Driving(Position::new(id, Distance::ZERO)),
+                        from: Source::Driving(Position::new(id, map.get_l(id).length() / 2.0)),
                         maybe_goal: None,
                     });
                 }

sim/src/sim.rs

@@ -428,7 +428,7 @@ impl Sim {
         self.driving.debug_car(id);
     }
 
-    pub fn debug_intersection(&mut self, id: IntersectionID, map: &Map) {
+    pub fn debug_intersection(&self, id: IntersectionID, map: &Map) {
         self.intersections.debug(id, map);
     }