From 3b4c5b5153c30120dc7d2f1c4ff7a6e85396a23f Mon Sep 17 00:00:00 2001
From: Dominic Masters <dominic@domsplace.com>
Date: Thu, 30 Apr 2026 23:34:32 -0500
Subject: [PATCH] Added FPS meter

---
 assets/entities/cube.js      | 14 ++++++--------
 src/dusk/console/console.c   |  6 +++---
 src/dusk/display/text/text.c | 10 +++++-----
 src/dusk/display/text/text.h |  4 ++--
 src/dusk/entity/entitybase.h |  4 ++--
 src/dusk/scene/scene.c       | 19 +++++++++++++++++++
 6 files changed, 37 insertions(+), 20 deletions(-)

diff --git a/assets/entities/cube.js b/assets/entities/cube.js
index 06caa60a..cff9748d 100644
--- a/assets/entities/cube.js
+++ b/assets/entities/cube.js
@@ -1,8 +1,6 @@
 function CubeEntity() {
   Entity.call(this);
-
   this.add(POSITION);
-  this.position.position = new Vec3(1, 0, 0);
   this.add(MESH);
   this.add(MATERIAL);
 }
@@ -11,12 +9,12 @@ CubeEntity.prototype = Object.create(Entity.prototype);
 CubeEntity.prototype.constructor = CubeEntity;
 
 CubeEntity.prototype.update = function() {
-  var speed = 3.0;
-  var move = Input.axis2D(INPUT_ACTION_LEFT, INPUT_ACTION_RIGHT, INPUT_ACTION_UP, INPUT_ACTION_DOWN);
-  this.position.position.x += move.x * speed * TIME.delta;
-  this.position.position.z += move.y * speed * TIME.delta;
-  this.position.rotation.x += 3 * TIME.delta;
-  this.position.rotation.z += 2 * TIME.delta;
+  // var speed = 3.0;
+  // var move = Input.axis2D(INPUT_ACTION_LEFT, INPUT_ACTION_RIGHT, INPUT_ACTION_UP, INPUT_ACTION_DOWN);
+  // this.position.position.x += move.x * speed * TIME.delta;
+  // this.position.position.z += move.y * speed * TIME.delta;
+  // this.position.rotation.x += 3 * TIME.delta;
+  // this.position.rotation.z += 2 * TIME.delta;
   this.material.setColor(Color.rainbow());
 };
 
diff --git a/src/dusk/console/console.c b/src/dusk/console/console.c
index 59aadcc7..0cd83d72 100644
--- a/src/dusk/console/console.c
+++ b/src/dusk/console/console.c
@@ -419,11 +419,11 @@ errorret_t consoleDraw() {
 
   for(uint32_t i = 0; i < CONSOLE_HISTORY_MAX; i++) {
     errorChain(textDraw(
-      0, DEFAULT_FONT_TILESET.tileHeight * i,
+      0, FONT_TILESET_DEFAULT.tileHeight * i,
       CONSOLE.line[i],
       COLOR_WHITE,
-      &DEFAULT_FONT_TILESET,
-      &DEFAULT_FONT_TEXTURE
+      &FONT_TILESET_DEFAULT,
+      &FONT_TEXTURE_DEFAULT
     ));
   }
   errorChain(spriteBatchFlush());
diff --git a/src/dusk/display/text/text.c b/src/dusk/display/text/text.c
index 98e23776..f2eef696 100644
--- a/src/dusk/display/text/text.c
+++ b/src/dusk/display/text/text.c
@@ -13,19 +13,19 @@
 #include "asset/loader/display/assettilesetloader.h"
 #include "display/shader/shaderunlit.h"
 
-texture_t DEFAULT_FONT_TEXTURE;
-tileset_t DEFAULT_FONT_TILESET;
+texture_t FONT_TEXTURE_DEFAULT;
+tileset_t FONT_TILESET_DEFAULT;
 
 errorret_t textInit(void) {
   errorChain(assetTextureLoad(
-    "ui/minogram.png", &DEFAULT_FONT_TEXTURE, TEXTURE_FORMAT_RGBA
+    "ui/minogram.png", &FONT_TEXTURE_DEFAULT, TEXTURE_FORMAT_RGBA
   ));
-  errorChain(assetTilesetLoad("ui/minogram.dtf", &DEFAULT_FONT_TILESET));
+  errorChain(assetTilesetLoad("ui/minogram.dtf", &FONT_TILESET_DEFAULT));
   errorOk();
 }
 
 errorret_t textDispose(void) {
-  errorChain(textureDispose(&DEFAULT_FONT_TEXTURE));
+  errorChain(textureDispose(&FONT_TEXTURE_DEFAULT));
   errorOk();
 }
 
diff --git a/src/dusk/display/text/text.h b/src/dusk/display/text/text.h
index 5944e205..a70b8df0 100644
--- a/src/dusk/display/text/text.h
+++ b/src/dusk/display/text/text.h
@@ -12,8 +12,8 @@
 
 #define TEXT_CHAR_START '!'
 
-extern texture_t DEFAULT_FONT_TEXTURE;
-extern tileset_t DEFAULT_FONT_TILESET;
+extern texture_t FONT_TEXTURE_DEFAULT;
+extern tileset_t FONT_TILESET_DEFAULT;
 
 /**
  * Initializes the text system.
diff --git a/src/dusk/entity/entitybase.h b/src/dusk/entity/entitybase.h
index d14cf6c6..66a67ed5 100644
--- a/src/dusk/entity/entitybase.h
+++ b/src/dusk/entity/entitybase.h
@@ -8,8 +8,8 @@
 #pragma once
 #include "dusk.h"
 
-#define ENTITY_COUNT_MAX 6
-#define ENTITY_COMPONENT_COUNT_MAX 6
+#define ENTITY_COUNT_MAX 20
+#define ENTITY_COMPONENT_COUNT_MAX 8
 
 typedef uint8_t entityid_t;
 typedef uint8_t componentid_t;
diff --git a/src/dusk/scene/scene.c b/src/dusk/scene/scene.c
index f83ebfe0..a33734e8 100644
--- a/src/dusk/scene/scene.c
+++ b/src/dusk/scene/scene.c
@@ -46,6 +46,8 @@ errorret_t sceneUpdate(void) {
   errorOk();
 }
 
+dusktimeepoch_t LAST;
+
 errorret_t sceneRender(void) {
   entityid_t camEnts[ENTITY_COUNT_MAX];
   componentid_t camComps[ENTITY_COUNT_MAX];
@@ -141,6 +143,23 @@ errorret_t sceneRender(void) {
   errorChain(shaderSetMatrix(&SHADER_UNLIT, SHADER_UNLIT_MODEL, model));
   errorChain(consoleDraw());
 
+  // FPS
+  char_t fpsText[32];
+
+  dusktimeepoch_t now = timeGetEpoch();
+  double_t delta = now.time - LAST.time;
+  LAST = now;
+  double_t fps = delta > 0 ? 1.0 / delta : 0.0;
+  snprintf(fpsText, sizeof(fpsText), "FPS: %.2f", fps);
+
+  errorChain(spriteBatchFlush());
+  errorChain(textDraw(
+    0, 0,
+    fpsText, COLOR_WHITE,
+    &FONT_TILESET_DEFAULT, &FONT_TEXTURE_DEFAULT
+  ));
+  errorChain(spriteBatchFlush());
+
   errorOk();
 }