From 21a0d0c1c424f7db90c3282aad4bf6ad4ef809b7 Mon Sep 17 00:00:00 2001
From: 3gg <3gg@shellblade.net>
Date: Sat, 8 Jul 2023 14:37:29 -0700
Subject: Load tile maps and tile sets from files.

---
 gfx-iso/app/main.c | 185 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 185 insertions(+)
 create mode 100644 gfx-iso/app/main.c

(limited to 'gfx-iso/app/main.c')

diff --git a/gfx-iso/app/main.c b/gfx-iso/app/main.c
new file mode 100644
index 0000000..fa5a76b
--- /dev/null
+++ b/gfx-iso/app/main.c
@@ -0,0 +1,185 @@
+#include "app.h"
+#include "checkerboard.h"
+#include "isogfx-demo.h"
+
+#include <isogfx/isogfx.h>
+
+#include <gfx/gfx.h>
+#include <gfx/gfx_app.h>
+#include <gfx/render_backend.h>
+#include <gfx/renderer.h>
+#include <gfx/scene.h>
+#include <gfx/util/geometry.h>
+#include <gfx/util/shader.h>
+
+#include <assert.h>
+#include <stdbool.h>
+#include <stdlib.h>
+
+static const int SCREEN_WIDTH  = 1408;
+static const int SCREEN_HEIGHT = 960;
+
+typedef struct State {
+  Gfx*      gfx;
+  IsoGfx*   iso;
+  IsoGfxApp app;
+  Texture*  screen_texture;
+  Scene*    scene;
+} State;
+
+static bool init(const GfxAppDesc* desc, void** app_state) {
+  State* state = calloc(1, sizeof(State));
+  if (!state) {
+    return false;
+  }
+
+  if (!(state->iso = isogfx_new(&(IsoGfxDesc){
+            .screen_width = SCREEN_WIDTH, .screen_height = SCREEN_HEIGHT}))) {
+    goto cleanup;
+  }
+  //  if (!make_checkerboard_app(state->iso, &state->app)) {
+  //    goto cleanup;
+  //  }
+  if (!make_demo_app(state->iso, &state->app)) {
+    goto cleanup;
+  }
+  if (!(state->gfx = gfx_init())) {
+    goto cleanup;
+  }
+  RenderBackend* render_backend = gfx_get_render_backend(state->gfx);
+
+  if (!(state->screen_texture = gfx_make_texture(
+            render_backend, &(TextureDesc){
+                                .width     = SCREEN_WIDTH,
+                                .height    = SCREEN_HEIGHT,
+                                .dimension = Texture2D,
+                                .format    = TextureSRGBA8,
+                                .filtering = NearestFiltering,
+                                .wrap      = ClampToEdge,
+                                .mipmaps   = false}))) {
+    goto cleanup;
+  }
+
+  ShaderProgram* shader = gfx_make_view_texture_shader(render_backend);
+  if (!shader) {
+    goto cleanup;
+  }
+
+  Geometry* geometry = gfx_make_quad_11(render_backend);
+  if (!geometry) {
+    goto cleanup;
+  }
+
+  MaterialDesc material_desc = (MaterialDesc){.num_uniforms = 1};
+  material_desc.uniforms[0]  = (ShaderUniform){
+       .type          = UniformTexture,
+       .value.texture = state->screen_texture,
+       .name          = sstring_make("Texture")};
+  Material* material = gfx_make_material(&material_desc);
+  if (!material) {
+    return false;
+  }
+
+  const MeshDesc mesh_desc =
+      (MeshDesc){.geometry = geometry, .material = material, .shader = shader};
+  Mesh* mesh = gfx_make_mesh(&mesh_desc);
+  if (!mesh) {
+    goto cleanup;
+  }
+
+  SceneObject* object = gfx_make_object();
+  if (!object) {
+    goto cleanup;
+  }
+  gfx_add_object_mesh(object, mesh);
+
+  state->scene    = gfx_make_scene();
+  SceneNode* node = gfx_make_object_node(object);
+  SceneNode* root = gfx_get_scene_root(state->scene);
+  gfx_set_node_parent(node, root);
+
+  *app_state = state;
+  return true;
+
+cleanup:
+  if (state->gfx) {
+    gfx_destroy(&state->gfx);
+  }
+  free(state);
+  return false;
+}
+
+static void shutdown(void* app_state) {
+  assert(app_state);
+  State* state = (State*)(app_state);
+
+  if (state->app.state) {
+    assert(state->iso);
+    (*state->app.shutdown)(state->iso, state->app.state);
+  }
+  isogfx_del(&state->iso);
+  gfx_destroy(&state->gfx);
+  free(app_state);
+}
+
+static void update(void* app_state, double t, double dt) {
+  assert(app_state);
+  State* state = (State*)(app_state);
+
+  assert(state->app.update);
+  (*state->app.update)(state->iso, state->app.state, t, dt);
+}
+
+static void render(void* app_state) {
+  assert(app_state);
+  State* state = (State*)(app_state);
+
+  assert(state->app.render);
+  (*state->app.render)(state->iso, state->app.state);
+
+  const Pixel* screen = isogfx_get_screen_buffer(state->iso);
+  assert(screen);
+  gfx_update_texture(
+      state->screen_texture, &(TextureDataDesc){.pixels = screen});
+
+  RenderBackend* render_backend = gfx_get_render_backend(state->gfx);
+  Renderer*      renderer       = gfx_get_renderer(state->gfx);
+
+  gfx_start_frame(render_backend);
+  gfx_render_scene(
+      renderer, &(RenderSceneParams){
+                    .mode = RenderDefault, .scene = state->scene, .camera = 0});
+  gfx_end_frame(render_backend);
+}
+
+static void resize(void* app_state, int width, int height) {
+  assert(app_state);
+  State* state = (State*)(app_state);
+
+  RenderBackend* render_backend = gfx_get_render_backend(state->gfx);
+  gfx_set_viewport(render_backend, width, height);
+}
+
+int main(int argc, const char** argv) {
+  const int initial_width  = SCREEN_WIDTH;
+  const int initial_height = SCREEN_HEIGHT;
+  const int max_fps        = 60;
+
+  gfx_app_run(
+      &(GfxAppDesc){
+          .argc              = argc,
+          .argv              = argv,
+          .width             = initial_width,
+          .height            = initial_height,
+          .max_fps           = max_fps,
+          .update_delta_time = max_fps > 0 ? 1.0 / (double)max_fps : 0.0,
+          .title             = "Isometric Renderer"},
+      &(GfxAppCallbacks){
+          .init     = init,
+          .update   = update,
+          .render   = render,
+          .resize   = resize,
+          .shutdown = shutdown});
+
+  return 0;
+}
-- 
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