From ef48585135194b6fd34f7e1f04fe79285bddd401 Mon Sep 17 00:00:00 2001
From: Andrew Kesterson <andrew@aklabs.net>
Date: Tue, 26 May 2026 10:37:06 -0400
Subject: [PATCH] modified assets for the new physics simulation engine, added
 velocity readouts to top left of HUD

---
 assets/characters/littleguy.json   |  8 ++++---
 assets/characters/menupointer.json |  8 ++++---
 assets/properties.json             |  4 +++-
 assets/sidescroller.tmj            |  2 +-
 deps/libakgl                       |  2 +-
 src/gamemodes.c                    | 36 ++++++++++++++++++++++++++----
 6 files changed, 47 insertions(+), 13 deletions(-)

diff --git a/assets/characters/littleguy.json b/assets/characters/littleguy.json
index dca9ae8..b438ab6 100644
--- a/assets/characters/littleguy.json
+++ b/assets/characters/littleguy.json
@@ -1,8 +1,10 @@
 {
     "name": "little guy",
-    "movementspeed": 8,
-    "velocity_x": 1,
-    "velocity_y": 1,
+    "speedtime": 8,
+    "acceleration_x": 0.001,
+    "acceleration_y": 0.001,
+    "speed_x": 1,
+    "speed_y": 1,
     "sprite_mappings": [
 	{
 	    "state": [
diff --git a/assets/characters/menupointer.json b/assets/characters/menupointer.json
index e8a61d8..78d633f 100644
--- a/assets/characters/menupointer.json
+++ b/assets/characters/menupointer.json
@@ -1,8 +1,10 @@
 {
     "name": "menupointer",
-    "movementspeed": 8,
-    "velocity_x": 0,
-    "velocity_y": 0,
+    "speedtime": 8,
+    "speed_x": 0,
+    "speed_y": 0,
+    "acceleration_x": 0,
+    "acceleration_y": 0,
     "sprite_mappings": [
 	{
 	    "state": [
diff --git a/assets/properties.json b/assets/properties.json
index c94c8b1..2a75db1 100644
--- a/assets/properties.json
+++ b/assets/properties.json
@@ -2,6 +2,8 @@
     "properties": {
 	"some.key.with.a.value": "value",
 	"game.screenwidth": "640",
-	"game.screenheight": "480"
+	"game.screenheight": "480",
+	"physics.gravity.y": "32.0",
+	"physics.gravity.terminal_y": "120.0"
     }
 }
diff --git a/assets/sidescroller.tmj b/assets/sidescroller.tmj
index cbce02b..a5436c7 100644
--- a/assets/sidescroller.tmj
+++ b/assets/sidescroller.tmj
@@ -33,7 +33,7 @@
                         {
                          "name":"state",
                          "type":"int",
-                         "value":24
+                         "value":1041
                         }],
                  "rotation":0,
                  "type":"actor",
diff --git a/deps/libakgl b/deps/libakgl
index d87c5d2..314ce5e 160000
--- a/deps/libakgl
+++ b/deps/libakgl
@@ -1 +1 @@
-Subproject commit d87c5d2c20ce4d3c1c0343459f46222305d98faa
+Subproject commit 314ce5e10d0b2d2eb55e5a53267a4cba07a5b7eb
diff --git a/src/gamemodes.c b/src/gamemodes.c
index 506f6ae..d48255a 100644
--- a/src/gamemodes.c
+++ b/src/gamemodes.c
@@ -1,4 +1,5 @@
 #include <akgltest.h>
+#include <akgl/game.h>
 
 akerr_ErrorContext AKERR_NOIGNORE *akgltest_set_gamemode_menu(akgl_Actor *appstate, SDL_Event *event)
 {
@@ -148,26 +149,53 @@ akerr_ErrorContext AKERR_NOIGNORE *akgltest_iterate_running(void)
 {
     int i = 0;
     akgl_Iterator opflags;
+    akgl_Actor *player;
+    TTF_Font *gamefont;
     char fpsText[32];
+    char velocityText[128];
+    int count;
 
     PREPARE_ERROR(e);
     PASS(e, renderer.frame_start(&renderer));
+    player = SDL_GetPointerProperty(AKGL_REGISTRY_ACTOR, "player", NULL);
+    FAIL_ZERO_RETURN(e, player, AKERR_NULLPOINTER, "player not in registry");
+    gamefont = SDL_GetPointerProperty(AKGL_REGISTRY_FONT, "C64Pro", NULL);
+    FAIL_ZERO_RETURN(e, player, AKERR_NULLPOINTER, "font not in registry");
 
     PASS(e, akgl_game_update(NULL));
 
     memset((char *)&fpsText, 0x00, 32);
     snprintf((char *)&fpsText, 31, "FPS : %d", game.fps);
     PASS(e, akgl_text_rendertextat(
-	     SDL_GetPointerProperty(
-		 AKGL_REGISTRY_FONT,
-		 "C64Pro",
-		 NULL),
+	     gamefont,
 	     (char *)&fpsText,
 	     (SDL_Color){255, 255, 255, 255},
 	     0,
 	     450,
 	     10)
 	);
+
+    memset((char *)&velocityText, 0x00, 128);
+    snprintf((char *)&velocityText, 127, "AX: %f", player->vx);
+    PASS(e, akgl_text_rendertextat(
+	     gamefont,
+	     (char *)&velocityText,
+	     (SDL_Color){255, 255, 255, 255},
+	     0,
+	     10,
+	     10)
+	);
+    memset((char *)&velocityText, 0x00, 128);
+    snprintf((char *)&velocityText, 127, "AY: %f", player->vy);
+    PASS(e, akgl_text_rendertextat(
+	     gamefont,
+	     (char *)&velocityText,
+	     (SDL_Color){255, 255, 255, 255},
+	     0,
+	     10,
+	     30)
+	);
+    
     PASS(e, renderer.frame_end(&renderer));
     SUCCEED_RETURN(e);
 }