sdr velo

sdr.diff

diff --git a/bin/data/profiles/default.ini b/bin/data/profiles/default.ini
index d8ae7f5..2a0ac1a 100644
--- a/bin/data/profiles/default.ini
+++ b/bin/data/profiles/default.ini
@@ -122,6 +122,14 @@ velo_font_size=48
 # This is the color of the text.
 velo_color=200 200 200 255
 
+# The RGBA color components between 0 and 255.
+# This is the color of the text used when velocity is increasing.
+velo_color_inc=0 255 255 255
+
+# The RGBA color components between 0 and 255.
+# This is the color of the text used when velocity is decreasing.
+velo_color_dec=255 0 255 255
+
 # The RGBA color components between 0 and 255.
 # This is the color of the text border.
 velo_border_color=0 0 0 255
@@ -157,6 +165,9 @@ velo_anchor=center
 # Length of which velocity to show. Possible values are: xy, xyz, z.
 velo_length=xy
 
+# How often to update the velocity. Every 1-60 frames.
+velo_frames=10
+
 #################################################################
 # Input overlay
 #################################################################
diff --git a/src/svr_game/proc_profile.cpp b/src/svr_game/proc_profile.cpp
index aeb7588..712646a 100644
--- a/src/svr_game/proc_profile.cpp
+++ b/src/svr_game/proc_profile.cpp
@@ -189,6 +189,9 @@ bool ProcState::movie_load_profile(const char* name)
     ret &= OPT_STR(&ini_root, "velo_font", movie_profile.velo_font);
     ret &= OPT_S32(&ini_root, "velo_font_size", 16, 192, &movie_profile.velo_font_size);
     ret &= OPT_COLOR(&ini_root, "velo_color", &movie_profile.velo_font_color);
+    ret &= OPT_COLOR(ini_root, "velo_color_inc", &movie_profile.velo_font_color_inc);
+    ret &= OPT_COLOR(ini_root, "velo_color_dec", &movie_profile.velo_font_color_dec);
+    ret &= OPT_S32(ini_root, "velo_frames", 1, 60, &movie_profile.velo_frames);
     ret &= OPT_COLOR(&ini_root, "velo_border_color", &movie_profile.velo_font_border_color);
     ret &= OPT_S32(&ini_root, "velo_border_size", 0, 192, &movie_profile.velo_font_border_size);
     ret &= OPT_S32(&ini_root, "velo_shadow_offset", 0, 192, &movie_profile.velo_shadow_offset);
diff --git a/src/svr_game/proc_state.h b/src/svr_game/proc_state.h
index e80f7cb..792328d 100644
--- a/src/svr_game/proc_state.h
+++ b/src/svr_game/proc_state.h
@@ -51,9 +51,12 @@ struct MovieProfile
 
     // Velo options:
     s32 velo_enabled;
+    s32 velo_frames;
     char velo_font[128];
     s32 velo_font_size;
     SvrVec4I velo_font_color;
+    SvrVec4I velo_font_color_inc;
+    SvrVec4I velo_font_color_dec;
     SvrVec4I velo_font_border_color;
     s32 velo_font_border_size;
     s32 velo_shadow_offset;
diff --git a/src/svr_game/proc_velo.cpp b/src/svr_game/proc_velo.cpp
index d4f3bcb..2b66fa0 100644
--- a/src/svr_game/proc_velo.cpp
+++ b/src/svr_game/proc_velo.cpp
@@ -133,11 +133,22 @@ void ProcState::velo_draw()
         }
     }
 
-    float length = velo_get_length(front);
-    s32 speed = (s32)(sqrtf(length) + 0.5f);
+    static SvrVec4I color;
+    static s32 draw_speed = 0;
+    static s32 skip_update = 1;
+    // Only update drawn velocity every <configured velo_frames> frames.
+    if (--skip_update == 0)
+    {
+        float length = velo_get_length();
+        s32 speed = (s32)(sqrtf(length) + 0.5f);
+        s32 speed_diff = draw_speed - speed;
+        color = speed_diff > 0 ? movie_profile.velo_font_color_inc : speed_diff < 0 ? movie_profile.velo_font_color_dec : movie_profile.velo_font_color;
+        draw_speed = speed;
+        skip_update = movie_profile.velo_frames;
+    }
 
     char buf[128];
-    s32 text_length = SVR_SNPRINTF(buf, "%d", speed);
+    s32 text_length = SVR_SNPRINTF(buf, "%d", draw_speed);
 
     UINT16* idxs = SVR_ALLOCA_NUM(UINT16, text_length);
     float* advances = SVR_ALLOCA_NUM(float, text_length);
@@ -190,7 +201,7 @@ void ProcState::velo_draw()
             vid_d2d1_context->SetTransform(D2D1::Matrix3x2F::Translation(pos.x + advance_x, pos.y));
 
             // Draw the fill.
-            vid_d2d1_solid_brush->SetColor(vid_convert(movie_profile.velo_font_color));
+            vid_d2d1_solid_brush->SetColor(vid_fill_d2d1_color(color));
             vid_d2d1_context->FillGeometry(geom, vid_d2d1_solid_brush);
 
             // Draw the border.
@@ -223,7 +234,7 @@ void ProcState::velo_draw()
             vid_d2d1_context->DrawGlyphRun(vid_convert(pos_copy), &run, vid_d2d1_solid_brush);
         }
 
-        vid_d2d1_solid_brush->SetColor(vid_convert(movie_profile.velo_font_color));
+        vid_d2d1_solid_brush->SetColor(vid_fill_d2d1_color(color));
         vid_d2d1_context->DrawGlyphRun(vid_convert(pos), &run, vid_d2d1_solid_brush);
 
         // vid_d2d1_solid_brush->SetColor(D2D1::ColorF(1.0f, 0.0f, 0.0f, 0.2f));