From 3f91c1d9edb6cd7c251b51c18a5db54fe185ffed Mon Sep 17 00:00:00 2001
From: 3gg <3gg@shellblade.net>
Date: Mon, 1 Sep 2025 14:50:37 -0700
Subject: Update to match new gfx-app

---
 demos/checkerboard/checkerboard.c | 18 +++++++++++-------
 1 file changed, 11 insertions(+), 7 deletions(-)

(limited to 'demos/checkerboard/checkerboard.c')

diff --git a/demos/checkerboard/checkerboard.c b/demos/checkerboard/checkerboard.c
index b408fc2..0c8ff37 100644
--- a/demos/checkerboard/checkerboard.c
+++ b/demos/checkerboard/checkerboard.c
@@ -66,9 +66,9 @@ static void make_checkerboard(IsoGfx* iso, Tile black, Tile white) {
   }
 }
 
-static bool init(GfxAppState* state, int argc, const char** argv) {
+static bool init(GfxApp* app, GfxAppState* state, int argc, const char** argv) {
+  assert(app);
   assert(state);
-
   (void)argc;
   (void)argv;
 
@@ -100,14 +100,16 @@ static bool init(GfxAppState* state, int argc, const char** argv) {
   return true;
 }
 
-static void shutdown(GfxAppState* state) {
+static void shutdown(GfxApp* app, GfxAppState* state) {
+  assert(app);
   assert(state);
 
   iso_backend_shutdown(&state->backend);
   isogfx_del(&state->iso);
 }
 
-static void update(GfxAppState* state, double t, double dt) {
+static void update(GfxApp* app, GfxAppState* state, double t, double dt) {
+  assert(app);
   assert(state);
   (void)dt;
 
@@ -117,7 +119,7 @@ static void update(GfxAppState* state, double t, double dt) {
 
   // Get mouse position in window coordinates.
   double mouse_x, mouse_y;
-  gfx_app_get_mouse_position(&mouse_x, &mouse_y);
+  gfx_app_get_mouse_position(app, &mouse_x, &mouse_y);
 
   // Map from window coordinates to virtual screen coordinates.
   iso_backend_get_mouse_position(
@@ -128,7 +130,8 @@ static void update(GfxAppState* state, double t, double dt) {
   printf("Picked tile: (%d, %d)\n", state->xpick, state->ypick);
 }
 
-static void render(GfxAppState* state) {
+static void render(const GfxApp* app, GfxAppState* state) {
+  assert(app);
   assert(state);
 
   IsoGfx* iso = state->iso;
@@ -142,7 +145,8 @@ static void render(GfxAppState* state) {
   iso_backend_render(state->backend, iso);
 }
 
-static void resize(GfxAppState* state, int width, int height) {
+static void resize(GfxApp* app, GfxAppState* state, int width, int height) {
+  assert(app);
   assert(state);
 
   iso_backend_resize_window(state->backend, state->iso, width, height);
-- 
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