the coolest fucking thing ive ever made
[carveJwlIkooP6JGAAIwe30JlM.git] / player.h
index f03747a5098cf5afc8effde12f13fc0dce416a8b..442d03e0ab7a783fd1b71bba44762e9675cb6e20 100644 (file)
--- a/player.h
+++ b/player.h
@@ -1,15 +1,12 @@
 /*
- * Copyright 2021-2022 (C) Mount0 Software, Harry Godden - All Rights Reserved
- * -----------------------------------------------------------------------------
- *
- * Player head module
- *
- * -----------------------------------------------------------------------------
+ * Copyright (C) 2021-2022 Mt.ZERO Software, Harry Godden - All Rights Reserved
  */
 
 #ifndef PLAYER_H
 #define PLAYER_H
 
+#define PLAYER_REWIND_FRAMES 60*4
+
 #include "audio.h"
 #include "common.h"
 #include "world.h"
 #include "bvh.h"
 
 static float 
-   k_walkspeed             = 7.0f,  /* no longer used */
-   k_runspeed              = 14.0f,
+   k_walkspeed             = 20.0f,  /* no longer used */
+   k_runspeed              = 20.0f,
    k_board_radius          = 0.3f,
    k_board_length          = 0.45f,
    k_board_allowance       = 0.04f,
-   k_friction_lat          = 8.8f,
+   //k_friction_lat          = 8.8f,
+   k_friction_lat          = 12.0f,
    k_friction_resistance   = 0.01f,
    k_max_push_speed        = 16.0f,
    k_push_accel            = 10.0f,
@@ -32,11 +30,12 @@ static float
    k_steer_air_lerp        = 0.3f,
    k_pump_force            = 0.0f,
    k_downforce             = 5.0f,
+   k_walk_downforce        = 8.0f,
    k_jump_charge_speed     = (1.0f/1.0f),
    k_jump_force            = 5.0f,
    k_pitch_limit           = 1.5f,
    k_look_speed            = 2.0f,
-   k_walk_accel            = 5.0f,
+   k_walk_accel            = 150.0f,
    k_walk_friction         = 8.0f;
 
 static int freecam = 0;
@@ -65,7 +64,8 @@ static struct gplayer
       float vswitch, slip, slip_last,
             reverse;
 
-      float grab, jump;
+      float grab, jump, pushing, push_time;
+      double start_push;
       int in_air, on_board, jump_charge, jump_dir;
 
       m3x3f vr,vr_pstep;
@@ -73,8 +73,10 @@ static struct gplayer
    phys, 
    phys_gate_frame;
 
-   float pushing, push_time;
-   int is_dead;
+   m4x3f visual_transform,
+         inv_visual_transform;
+
+   int is_dead, death_tick_allowance, rewinding;
 
    v3f land_target;
    v3f land_target_log[22];
@@ -89,7 +91,17 @@ static struct gplayer
    
    v3f camera_pos, smooth_localcam;
    v2f angles;
-   m4x3f camera, camera_inverse;
+
+   struct rewind_frame
+   {
+      v3f pos;
+      v2f ang;
+   }
+   *rewind_buffer;
+   u32 rewind_incrementer,
+       rewind_length;
+
+   float rewind_time;
 
    /* animation */
    double jump_time;
@@ -102,8 +114,10 @@ static struct gplayer
          fsetup,
          walk_timer,
          fjump,
-         fonboard;
+         fonboard,
+         frun;
 
+   float walk;
    int step_phase;
 
    /* player model */
@@ -118,7 +132,8 @@ static struct gplayer
                            *anim_push, *anim_push_reverse,
                            *anim_ollie, *anim_ollie_reverse,
                            *anim_grabs, *anim_stop,
-                           *anim_walk, *anim_run, *anim_idle;
+                           *anim_walk, *anim_run, *anim_idle,
+                           *anim_jump;
 
       u32 id_hip,
           id_ik_hand_l,
@@ -161,6 +176,7 @@ static void player_kill(void);
 static float *player_cam_pos(void);
 static void player_save_frame(void);
 static void player_restore_frame(void);
+static void player_save_rewind_frame(void);
 
 /* 
  * Submodules
@@ -228,21 +244,46 @@ static void player_init(void)                                            /* 1 */
                .function = reset_player
        });
 
+   player.rewind_length = 0;
+   player.rewind_buffer = vg_alloc( sizeof(struct rewind_frame) 
+                                       * PLAYER_REWIND_FRAMES );
+
    /* other systems */
    vg_loader_highwater( player_model_init, player_model_free, NULL );
 }
 
-static void player_update(void)                                          /* 2 */
+static void player_save_rewind_frame(void)
+{
+   if( player.rewind_length < PLAYER_REWIND_FRAMES )
+   {
+      struct rewind_frame *fr = 
+         &player.rewind_buffer[ player.rewind_length ++ ];
+
+      v2_copy( player.angles, fr->ang );
+      v3_copy( player.camera_pos, fr->pos );
+
+      player.rewind_incrementer = 0;
+   }
+}
+
+/* Deal with input etc */
+static void player_update_pre(void)
 {
    struct player_phys *phys = &player.phys;
 
-   for( int i=0; i<player.land_log_count; i++ )
-      vg_line_cross( player.land_target_log[i], 
-            player.land_target_colours[i], 0.25f);
+   if( player.rewinding )
+   {
+      return;
+   }
 
-   if( vg_get_axis("grabl")>0.0f)
+   if( vg_get_button_down( "reset" ) )
    {
+      player.rewinding = 1;
+      player.rewind_time = (float)player.rewind_length - 0.0001f;
+      player_save_rewind_frame();
+
       player.is_dead = 0;
+      player.death_tick_allowance = 30;
       player_restore_frame();
 
       if( !phys->on_board )
@@ -255,24 +296,57 @@ static void player_update(void)                                          /* 2 */
       player.mdl.shoes[1] = 1;
 
       world_routes_notify_reset();
+
+      /* apply 1 frame of movement */
+      player_do_motion();
    }
 
    if( vg_get_button_down( "switchmode" ) )
    {
       phys->on_board ^= 0x1;
+
+      if( phys->on_board )
+      {
+         v3_muladds( phys->rb.v, phys->rb.forward, 0.2f, phys->rb.v );
+      }
    }
+}
+
+static void player_update_fixed(void)                                    /* 2 */
+{
+   if( player.rewinding )
+      return;
+
+   if( player.death_tick_allowance )
+      player.death_tick_allowance --;
+
+   struct player_phys *phys = &player.phys;
 
-#if 0
-   if( (glfwGetKey( vg_window, GLFW_KEY_O ) ))
+   if( player.is_dead )
    {
-      player_ragdoll_copy_model( phys->rb.v );
-      player.is_dead = 1;
+      player_ragdoll_iter();
+   }
+   else
+   {
+      player.rewind_incrementer ++;
+
+      if( player.rewind_incrementer > (u32)(0.25/VG_TIMESTEP_FIXED) )
+      {
+         player_save_rewind_frame();
+      }
+
+      player_do_motion();
    }
-#endif
+}
+
+static void player_update_post(void)
+{
+   for( int i=0; i<player.land_log_count; i++ )
+      vg_line_cross( player.land_target_log[i], 
+            player.land_target_colours[i], 0.25f);
 
    if( player.is_dead )
    {
-      player_ragdoll_iter();
       player_debug_ragdoll();
 
       if( !freecam )
@@ -280,7 +354,6 @@ static void player_update(void)                                          /* 2 */
    }
    else
    {
-      player_do_motion();
       player_animate();
 
       if( !freecam )
@@ -290,11 +363,84 @@ static void player_update(void)                                          /* 2 */
    if( freecam )
       player_freecam();
 
-   player_camera_update();
+
+   /* CAMERA POSITIONING: LAYER 0 */
+   v2_copy( player.angles, camera_angles );
+   v3_copy( player.camera_pos, camera_pos );
+
+   if( player.rewinding )
+   {
+      if( player.rewind_time <= 0.0f )
+      {
+         player.rewinding = 0;
+         player.rewind_length = 1;
+         world.sky_target_rate = 1.0;
+      }
+      else
+      {
+         world.sky_target_rate = -100.0;
+         assert( player.rewind_length > 0 );
+
+         v2f override_angles;
+         v3f override_pos;
+
+         float budget         = vg.time_delta,
+               overall_length = player.rewind_length;
+
+         world_routes_rollback_time( player.rewind_time / overall_length );
+
+         for( int i=0; (i<10)&&(player.rewind_time>0.0f)&&(budget>0.0f); i ++ )
+         {
+            /* Interpolate frames */
+            int i0 = floorf( player.rewind_time ),
+                i1 = VG_MIN( i0+1, player.rewind_length-1 );
+            
+            struct rewind_frame *fr =  &player.rewind_buffer[i0],
+                                *fr1 = &player.rewind_buffer[i1];
+
+            float dist = vg_maxf( v3_dist( fr->pos, fr1->pos ), 0.001f ),
+                  subl = vg_fractf( player.rewind_time ) + 0.001f,
+
+                  sramp= 3.0f-(1.0f/(0.4f+0.4f*player.rewind_time)),
+                  speed = sramp*28.0f + 0.5f*player.rewind_time,
+                  mod  = speed * (budget / dist),
+
+                  advl = vg_minf( mod, subl ),
+                  advt = (advl / mod) * budget;
+
+            player.rewind_time -= advl;
+            budget -= advt;
+         }
+
+         player.rewind_time = vg_maxf( 0.0f, player.rewind_time );
+         
+         int i0 = floorf( player.rewind_time ),
+             i1 = VG_MIN( i0+1, player.rewind_length-1 );
+         
+         struct rewind_frame *fr =  &player.rewind_buffer[i0],
+                             *fr1 = &player.rewind_buffer[i1];
+         
+         float sub = vg_fractf(player.rewind_time);
+
+         v3_lerp( fr->pos, fr1->pos, sub, override_pos );
+         override_angles[0] = vg_alerpf( fr->ang[0], fr1->ang[0], sub );
+         override_angles[1] = vg_lerpf ( fr->ang[1], fr1->ang[1], sub );
+
+         /* CAMERA POSITIONING: LAYER 1 */
+         float blend = (4.0f-player.rewind_time) * 0.25f,
+               c     = vg_clampf( blend, 0.0f, 1.0f );
+
+         camera_angles[0] = vg_alerpf(override_angles[0], player.angles[0], c);
+         camera_angles[1] = vg_lerpf (override_angles[1], player.angles[1], c);
+         v3_lerp( override_pos, player.camera_pos, c, camera_pos );
+      }
+   }
+
+   camera_update();
    player_audio();
 }
 
-static void draw_player(void)                                            /* 3 */
+static void draw_player( m4x3f cam )
 {
    if( player.is_dead )
       player_model_copy_ragdoll();
@@ -302,8 +448,8 @@ static void draw_player(void)                                            /* 3 */
    shader_viewchar_use();
    vg_tex2d_bind( &tex_characters, 0 );
    shader_viewchar_uTexMain( 0 );
-   shader_viewchar_uCamera( player.camera[3] );
-   shader_viewchar_uPv( vg_pv );
+   shader_viewchar_uCamera( cam[3] );
+   shader_viewchar_uPv( vg.pv );
    shader_link_standard_ub( _shader_viewchar.id, 2 );
    glUniformMatrix4x3fv( _uniform_viewchar_uTransforms, 
                          player.mdl.sk.bone_count,
@@ -327,8 +473,11 @@ static float *player_get_pos(void)
 
 static void player_kill(void)
 {
-   player.is_dead = 1;
-   player_ragdoll_copy_model( player.phys.rb.v );
+   if( player.death_tick_allowance == 0 )
+   {
+      player.is_dead = 1;
+      player_ragdoll_copy_model( player.phys.rb.v );
+   }
 }
 
 static float *player_cam_pos(void)