Testing + First event listener

.vscode/settings.json

@@ -13,6 +13,12 @@
         "flecs.h": "c",
         "stdlib.h": "c",
         "math.h": "c",
-        "stdio.h": "c"
+        "stdio.h": "c",
+        "sokol_memtrack.h": "c",
+        "type_traits": "cpp",
+        "limits": "cpp",
+        "ratio": "cpp",
+        "sokol_log.h": "c",
+        "syslog.h": "c"
     }
 }

build.bat

@@ -1 +1 @@
-emcc -O3 src/main.c -o app.html -sUSE_WEBGL2 -sWASM_BIGINT -pthread -I../sokol -I../sokol_gp -I../flecs/distr --shell-file=shell.html -sFILESYSTEM=0
+emcc -O3 src/main.c -o app.html -sUSE_WEBGL2 -sWASM_BIGINT -sALLOW_MEMORY_GROWTH -pthread -I../sokol -I../sokol_gp -I../flecs/distr --shell-file=shell.html -sFILESYSTEM=0

debug.bat

@@ -1 +1 @@
-emcc src/main.c -o app.html -sUSE_WEBGL2 -sASSERTIONS -sWASM_BIGINT -pthread -I../sokol -I../sokol_gp -I../flecs/distr --shell-file=shell.html -sFILESYSTEM=0 -g
+emcc src/main.c -o app.html -sUSE_WEBGL2 -sASSERTIONS -sWASM_BIGINT -sALLOW_MEMORY_GROWTH -pthread -I../sokol -I../sokol_gp -I../flecs/distr --shell-file=shell.html -sFILESYSTEM=0 -g

src/main.c

@@ -3,22 +3,52 @@
 // Includes Sokol GFX, Sokol GP and Sokol APP, doing all implementations.
 #define SOKOL_IMPL
 #define SOKOL_GLES3
-#define FLECS_CUSTOM_BUILD
+
 #include "sokol_gfx.h"
 #include "sokol_gp.h"
 #include "sokol_app.h"
 #include "sokol_glue.h"
+#include "sokol_log.h"
+#include "util/sokol_memtrack.h"
 
-#include "flecs.c"
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+#include <stdarg.h>
 
-#include <stdio.h> // for fprintf()
-#include <stdlib.h> // for exit()
-#include <math.h> // for sinf() and cosf()
+#define ALLOC(arg) smemtrack_alloc(arg, NULL)
+#define FREE(arg) smemtrack_free(arg, NULL)
 
-ecs_world_t *world;
+void js_log(int severity, const char* format, ...)
+{
+    char buffer[_SLOG_LINE_LENGTH];
+
+    va_list va;
+    va_start(va, format);
+
+    int size = vsnprintf(buffer, _SLOG_LINE_LENGTH, format, va);
+
+    va_end(va);
+    slog_js_log(severity, buffer);
+}
+
+typedef struct position_t
+{
+    float x, y;
+} position_t;
+
+typedef struct userdata_t
+{
+    position_t* cells;
+    position_t pan;
+    float zoom;
+    sg_pipeline* pipeline;
+} userdata_t;
 
 // Called on every frame of the application.
-static void frame(void) {
+static void frame(void* _userdata)
+{
+    userdata_t* userdata = (userdata_t*) _userdata;
     // Get current window size.
     int width = sapp_width(), height = sapp_height();
     float ratio = width/(float)height;
@@ -30,16 +60,18 @@ static void frame(void) {
     // Set drawing coordinate space to (left=-ratio, right=ratio, top=1, bottom=-1).
     sgp_project(-ratio, ratio, 1.0f, -1.0f);
 
+    sgp_translate(userdata->pan.x, userdata->pan.y);
+    sgp_scale(userdata->zoom, userdata->zoom);
+
     // Clear the frame buffer.
-    sgp_set_color(0.1f, 0.1f, 0.1f, 1.0f);
+    sgp_set_color(0.0f, 0.0f, 0.0f, 1.0f);
     sgp_clear();
 
     // Draw an animated rectangle that rotates and changes its colors.
-    float time = sapp_frame_count() * sapp_frame_duration();
-    float r = sinf(time)*0.5+0.5, g = cosf(time)*0.5+0.5;
-    sgp_set_color(r, g, 0.3f, 1.0f);
-    sgp_rotate_at(time, 0.0f, 0.0f);
-    sgp_draw_filled_rect(-0.5f, -0.5f, 1.0f, 1.0f);
+    /*float time = sapp_frame_count() * sapp_frame_duration();*/
+    sgp_state* state = sgp_query_state();
+    state->thickness = 0.01f;
+    sgp_set_color(0.5f, 0.6f, 0.3f, 1.0f);
 
     // Begin a render pass.
     sg_pass pass = {.swapchain = sglue_swapchain()};
@@ -55,7 +87,10 @@ static void frame(void) {
 }
 
 // Called when the application is initializing.
-static void init(void) {
+static void init(void* _userdata)
+{
+    userdata_t* userdata = (userdata_t*) _userdata;
+
     // Initialize Sokol GFX.
     sg_desc sgdesc = {
         .environment = sglue_environment(),
@@ -73,27 +108,76 @@ static void init(void) {
         fprintf(stderr, "Failed to create Sokol GP context: %s\n", sgp_get_error_message(sgp_get_last_error()));
         exit(-1);
     }
-
-    world = ecs_init();
 }
 
 // Called when the application is shutting down.
-static void cleanup(void) {
-    ecs_fini(world);
+static void cleanup(void* _userdata)
+{
+    userdata_t* userdata = (userdata_t*) _userdata;
+
+    FREE(userdata->cells);
+    FREE(userdata);
 
     // Cleanup Sokol GP and Sokol GFX resources.
     sgp_shutdown();
     sg_shutdown();
+
+    smemtrack_info_t info = smemtrack_info();
+    //info.num_allocs
+}
+
+static void event(const sapp_event* event, void* _userdata)
+{
+    userdata_t* userdata = (userdata_t*) _userdata;
+    switch(event->type)
+    {
+        case SAPP_EVENTTYPE_MOUSE_DOWN:
+
+            break;
+        case SAPP_EVENTTYPE_MOUSE_UP:
+
+            break;
+        case SAPP_EVENTTYPE_MOUSE_MOVE:
+
+            break;
+        case SAPP_EVENTTYPE_MOUSE_SCROLL:
+            if((userdata->zoom >= 3.0f && event->scroll_y > 0.0f) || (userdata->zoom <= 0.1f && event->scroll_y < 0.0f))
+                return;
+
+            const float diff = expf(event->scroll_y * 0.01f);
+            const float width = sapp_widthf(), height = sapp_heightf();
+
+            userdata->pan.x = userdata->pan.x - (event->mouse_x / (diff * userdata->zoom) - event->mouse_x / userdata->zoom);
+            userdata->pan.y = userdata->pan.y - (event->mouse_x / (diff * userdata->zoom) - event->mouse_x / userdata->zoom);
+            userdata->zoom = _sg_clamp(userdata->zoom * diff, 0.1f, 3.0f);
+
+            js_log(3, "Zoom: %f", userdata->zoom);
+
+            break;
+        default:
+            break;
+    }
 }
 
 // Implement application main through Sokol APP.
-sapp_desc sokol_main(int argc, char* argv[]) {
+sapp_desc sokol_main(int argc, char* argv[])
+{
+    userdata_t* userdata = (userdata_t*) ALLOC(sizeof(userdata_t));
+    userdata->pan = (position_t) { .x = 0, .y = 0 };
+    userdata->zoom = 1;
+
     (void)argc;
     (void)argv;
     return (sapp_desc){
-        .init_cb = init,
-        .frame_cb = frame,
-        .cleanup_cb = cleanup,
+        .user_data = userdata,
+        .init_userdata_cb = init,
+        .frame_userdata_cb = frame,
+        .cleanup_userdata_cb = cleanup,
+        .event_userdata_cb = event,
         .window_title = "Rectangle (Sokol GP)",
+        .allocator = {
+            .alloc_fn = smemtrack_alloc,
+            .free_fn = smemtrack_free,
+        },
     };
 }