From 4ffa1895390066f2bbd347c0689a1b667a21fd24 Mon Sep 17 00:00:00 2001
From: 3gg <3gg@shellblade.net>
Date: Fri, 27 Jun 2025 10:17:41 -0700
Subject: Initial commit

---
 demos/isomap/isomap.c | 105 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 105 insertions(+)
 create mode 100644 demos/isomap/isomap.c

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

diff --git a/demos/isomap/isomap.c b/demos/isomap/isomap.c
new file mode 100644
index 0000000..a233659
--- /dev/null
+++ b/demos/isomap/isomap.c
@@ -0,0 +1,105 @@
+#include <isogfx/backend.h>
+#include <isogfx/isogfx.h>
+
+#include <gfx/app.h>
+
+#include <assert.h>
+#include <stdbool.h>
+
+static const int WINDOW_WIDTH  = 1408;
+static const int WINDOW_HEIGHT = 960;
+static const int MAX_FPS       = 60;
+
+// Virtual screen dimensions.
+static const int SCREEN_WIDTH  = 704;
+static const int SCREEN_HEIGHT = 480;
+
+typedef struct GfxAppState {
+  IsoBackend* backend;
+  IsoGfx*     iso;
+  int         xpick;
+  int         ypick;
+  SpriteSheet stag_sheet;
+  Sprite      stag;
+} GfxAppState;
+
+static bool init(GfxAppState* state, int argc, const char** argv) {
+  assert(state);
+  (void)argc;
+  (void)argv;
+
+  if (!(state->iso = isogfx_new(&(IsoGfxDesc){
+            .screen_width = SCREEN_WIDTH, .screen_height = SCREEN_HEIGHT}))) {
+    return false;
+  }
+  IsoGfx* iso = state->iso;
+
+  isogfx_resize(iso, SCREEN_WIDTH, SCREEN_HEIGHT);
+
+  if (!isogfx_load_world(iso, "/home/jeanne/assets/tilemaps/demo1.tm")) {
+    return false;
+  }
+
+  if (!isogfx_load_sprite_sheet(
+          iso, "/home/jeanne/assets/tilesets/scrabling/critters/stag/stag.ss",
+          &state->stag_sheet)) {
+    return false;
+  }
+
+  state->stag = isogfx_make_sprite(iso, state->stag_sheet);
+  isogfx_set_sprite_position(iso, state->stag, 5, 4);
+
+  if (!(state->backend = IsoBackendInit(iso))) {
+    return false;
+  }
+
+  return true;
+}
+
+static void shutdown(GfxAppState* state) {
+  assert(state);
+  //
+}
+
+static void update(GfxAppState* state, double t, double dt) {
+  assert(state);
+  (void)dt;
+
+  IsoGfx* iso = state->iso;
+  isogfx_update(iso, t);
+}
+
+static void render(GfxAppState* state) {
+  assert(state);
+
+  IsoGfx* iso = state->iso;
+  isogfx_render(iso);
+  IsoBackendRender(state->backend, iso);
+}
+
+static void resize(GfxAppState* state, int width, int height) {
+  assert(state);
+
+  IsoBackendResizeWindow(state->backend, state->iso, width, height);
+}
+
+int main(int argc, const char** argv) {
+  GfxAppState state = {0};
+  gfx_app_run(
+      &(GfxAppDesc){
+          .argc              = argc,
+          .argv              = argv,
+          .width             = WINDOW_WIDTH,
+          .height            = WINDOW_HEIGHT,
+          .max_fps           = MAX_FPS,
+          .update_delta_time = MAX_FPS > 0 ? 1.0 / (double)MAX_FPS : 0.0,
+          .title             = "Isometric Renderer",
+          .app_state         = &state},
+      &(GfxAppCallbacks){
+          .init     = init,
+          .update   = update,
+          .render   = render,
+          .resize   = resize,
+          .shutdown = shutdown});
+  return 0;
+}
-- 
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