Don't spawn ladder waypoints if there's no room for the bot on top of the ladder

diff --git a/qcsrc/common/triggers/func/ladder.qc b/qcsrc/common/triggers/func/ladder.qc
index d93b77b572e46a9d3a014592ffb71bd36bfbde80..42fe0b9d302519a6a7da8d66ab0b7a3aeb3e00ce 100644 (file)
--- a/qcsrc/common/triggers/func/ladder.qc
+++ b/qcsrc/common/triggers/func/ladder.qc
@@ -42,17 +42,34 @@ void func_ladder_link(entity this)
 void func_ladder_init(entity this)
 {
        settouch(this, func_ladder_touch);
-
        trigger_init(this);
        func_ladder_link(this);
 
        if(min(this.absmax.x - this.absmin.x, this.absmax.y - this.absmin.y) > 100)
                return;
+
+       vector top_min = (this.absmin + this.absmax) / 2;
+       top_min.z = this.absmax.z;
+       vector top_max = top_min;
+       top_max.z += PL_MAX_CONST.z - PL_MIN_CONST.z;
+       tracebox(top_max + jumpstepheightvec, PL_MIN_CONST, PL_MAX_CONST, top_min, MOVE_NOMONSTERS, NULL);
+       if(trace_startsolid)
+       {
+               tracebox(top_max + stepheightvec, PL_MIN_CONST, PL_MAX_CONST, top_min, MOVE_NOMONSTERS, NULL);
+               if(trace_startsolid)
+               {
+                       tracebox(top_max, PL_MIN_CONST, PL_MAX_CONST, top_min, MOVE_NOMONSTERS, NULL);
+                       if(trace_startsolid)
+                               return;
+               }
+       }
+       if(trace_endpos.z < this.absmax.z)
+               return;
+
        this.bot_pickup = true; // allow bots to make use of this ladder
-       vector top = (this.absmin + this.absmax) / 2;
-       top.z = this.absmax.z + 1 - PL_MIN_CONST.z;
-       float cost = waypoint_getlinearcost(this.absmax.z - this.absmin.z);
-       waypoint_spawnforteleporter_boxes(this, WAYPOINTFLAG_LADDER, this.absmin, this.absmax, top, top, cost);
+       float cost = waypoint_getlinearcost(trace_endpos.z - this.absmin.z);
+       top_min = trace_endpos;
+       waypoint_spawnforteleporter_boxes(this, WAYPOINTFLAG_LADDER, this.absmin, this.absmax, top_min, top_min, cost);
 }
 
 spawnfunc(func_ladder)