+//DP_PHYSICS_ODE
+//idea: LordHavoc
+//darkplaces implementation: LordHavoc
+//globals:
+//new movetypes:
+const float MOVETYPE_PHYSICS = 32; // need to be set before any physics_* builtins applied
+//new solid types:
+const float SOLID_PHYSICS_BOX = 32;
+const float SOLID_PHYSICS_SPHERE = 33;
+const float SOLID_PHYSICS_CAPSULE = 34;
+const float SOLID_PHYSICS_TRIMESH = 35;
+const float SOLID_PHYSICS_CYLINDER = 36;
+//SOLID_BSP;
+//joint types:
+const float JOINTTYPE_POINT = 1;
+const float JOINTTYPE_HINGE = 2;
+const float JOINTTYPE_SLIDER = 3;
+const float JOINTTYPE_UNIVERSAL = 4;
+const float JOINTTYPE_HINGE2 = 5;
+const float JOINTTYPE_FIXED = -1;
+// common joint properties:
+// .entity aiment, enemy; // connected objects
+// .vector movedir;
+// for a spring:
+// movedir_x = spring constant (force multiplier, must be > 0)
+// movedir_y = spring dampening constant to prevent oscillation (must be > 0)
+// movedir_z = spring stop position (+/-)
+// for a motor:
+// movedir_x = desired motor velocity
+// movedir_y = -1 * max motor force to use
+// movedir_z = stop position (+/-), set to 0 for no stop
+// note that ODE does not support both in one anyway
+//field definitions:
+.float mass; // ODE mass, standart value is 1
+.vector massofs; // offsets a mass center out of object center, if not set a center of model bounds is used
+.float friction;
+.float bouncefactor;
+.float bouncestop;
+.float jointtype;
+//builtin definitions:
+void(entity e, float physics_enabled) physics_enable = #540; // enable or disable physics on object
+void(entity e, vector force, vector force_pos) physics_addforce = #541; // apply a force from certain origin, length of force vector is power of force
+void(entity e, vector torque) physics_addtorque = #542; // add relative torque
+//description: provides Open Dynamics Engine support, requires extenal dll to be present or engine compiled with statical link option
+//be sure to checkextension for it to know if library is loaded and ready, also to enable physics set "physics_ode" cvar to 1
+//note: this extension is highly experimental and may be unstable
+