From: hgn <hgodden00@gmail.com>
Date: Mon, 30 Jan 2023 08:14:06 +0000 (+0000)
Subject: automatic camera inversing across portals
X-Git-Url: https://harrygodden.com/git/?a=commitdiff_plain;ds=sidebyside;h=2f1dca88d325b4eebd030232c694627f5791ebce;p=carveJwlIkooP6JGAAIwe30JlM.git

automatic camera inversing across portals
---

diff --git a/player_device_skate.h b/player_device_skate.h
index 566bead..13f6398 100644
--- a/player_device_skate.h
+++ b/player_device_skate.h
@@ -1199,6 +1199,8 @@ VG_STATIC void player_skate_update( player_interface *player,
       m4x3_mulv( gate->transport, s->state.cog,   s->state.cog );
       m3x3_mulv( gate->transport, s->state.cog_v, s->state.cog_v );
       m3x3_mulv( gate->transport, s->state.throw_v, s->state.throw_v );
+      m4x3_mulv( gate->transport, s->state.posl, s->state.posl );
+      m3x3_mulv( gate->transport, s->state.vl, s->state.vl );
 
 #if 0
       mixedcam_transport( &s->state.cam, gate );
diff --git a/player_interface.h b/player_interface.h
index e0830c1..93c699e 100644
--- a/player_interface.h
+++ b/player_interface.h
@@ -40,14 +40,9 @@ struct player_interface
       k_camera_mode_thirdperson
    }
    camera_mode;
-
    float camera_type_blend;
 
-   /* TODO: have an automated system for crossing the thirdperson camera 
-    * across portal boundaries. if it fails the check with the gate plane, then
-    * transform root_co and root_q, as well as final camera, BACK across the 
-    * division, using the inverse of the transport matrix
-    */
+   teleport_gate *gate_waiting;
 
    int   device_blend;
    float device_blend_time;
@@ -296,7 +291,7 @@ VG_STATIC void player_apply_transport_to_cam( m4x3f transport )
 PLAYER_DEVICE_API 
 void player_pass_gate( player_interface *player, teleport_gate *gate )
 {
-   
+   player->gate_waiting = gate;
 }
 
 VG_STATIC void player_post_update( player_interface *player )
@@ -357,6 +352,37 @@ VG_STATIC void player_pre_render( player_interface *player )
    float t = player->camera_type_blend;
    camera_lerp( &player->dev.cam_1st, &player->dev.cam_3rd, t, &player->cam );
 
+   if( player->gate_waiting )
+   {
+      /* construct plane equation for reciever gate */
+      v4f plane;
+      v3_copy( player->gate_waiting->recv_to_world[2], plane );
+      plane[3] = v3_dot( plane, player->gate_waiting->recv_to_world[3] );
+
+      /* check camera polarity */
+      if( v3_dot( player->cam.pos, plane ) < plane[3] ) 
+      {
+         vg_success( "Plane cleared\n" );
+         player_apply_transport_to_cam( player->gate_waiting->transport );
+         player->gate_waiting = NULL;
+      }
+      else
+      {
+         /* de-transform camera and player back */
+         m4x3f inverse;
+         m4x3_invert_affine( player->gate_waiting->transport, inverse );
+         m4x3_mulv( inverse, player->cam.pos, player->cam.pos );
+
+         /* TODO: Find robust method for this */
+         v3f fwd_dir = { cosf(player->cam.angles[0]),
+                         0.0f,
+                         sinf(player->cam.angles[0])};
+         m3x3_mulv( inverse, fwd_dir, fwd_dir );
+         player->cam.angles[0] = atan2f( fwd_dir[2], fwd_dir[0] );
+
+         skeleton_apply_transform( sk, inverse );
+      }
+   }
 
 #if 0
    v3_copy( player->dev.cam_1st.pos,    player->cam.pos );