PhysicsManager now has a job, CollisionManager enabled, using Player velocity instead of position for movement controls, added Entity drag, added spaces

lib/managers/collision_manager.rb

@@ -28,7 +28,7 @@ class IMICFPS
       @physics_manager.update
 
       collisions.each do |ent, list|
-        # puts "#{ent.class} -> [#{list.map{|e| e.class}.join(', ')}] (#{Gosu.milliseconds})"
+        # puts "#{ent.class} -> [#{list.map { |e| e.class }.join(', ')}] (#{Gosu.milliseconds})"
       end
     end
 
@@ -57,12 +57,12 @@ class IMICFPS
           # aabb vs aabb
           next unless entity.bounding_box.intersect?(ent.bounding_box)
           # entity model aabb tree vs ent model aabb tree
-          # ent_tree_search = ent.model.aabb_tree.search(localize_entity_bounding_box(entity, ent), true)
-          # next if ent_tree_search.size == 0
+          ent_tree_search = ent.model.aabb_tree.search(localize_entity_bounding_box(entity, ent), true)
+          next if ent_tree_search.size == 0
 
           # puts "#{ent.class} -> #{ent_tree_search.size} (#{Gosu.milliseconds})"
 
-          # entity.position.y = ent_tree_search.first.object.vertices.first.y if entity.is_a?(Player) && ent.is_a?(Terrain)
+          entity.position.y = ent_tree_search.first.object.vertices.first.y if entity.is_a?(Player) && ent.is_a?(Terrain)
 
           @collisions[entity] = _collisions
         end

lib/managers/physics_manager.rb

@@ -10,9 +10,27 @@ class IMICFPS
           resolve(entity, other)
         end
       end
+
+      simulate
     end
 
     def resolve(entity, other)
+      if other.is_a?(Terrain)
+        entity.velocity.y = 0 if entity.velocity.y < 0
+      else
+        entity.velocity.y = other.velocity.y if other.velocity.y < entity.velocity.y && entity.velocity.y < 0
+      end
+    end
+
+    def simulate
+      @collision_manager.game_state.entities.each do |entity|
+        entity.velocity.x *= entity.drag
+        entity.velocity.z *= entity.drag
+
+        entity.position.x += entity.velocity.x * entity.delta_time
+        entity.position.y += entity.velocity.y * entity.delta_time
+        entity.position.z += entity.velocity.z * entity.delta_time
+      end
     end
   end
 end