helpless/entry_randygame.c

int entry(int argc, char **argv) {
	
	window.title = STR("Randy's Game");
	window.width = 1280;
	window.height = 720;
	window.x = 200;
	window.y = 200;
	window.clear_color = hex_to_rgba(0x2a2d3aff);
	
	Gfx_Image* player = load_image_from_disk(STR("player.png"), get_heap_allocator());
	assert(player, "fuckie wucky happen");


	Vector2 player_pos = v2(0, 0);
	float64 seconds_counter = 0.0;
	s32 frame_count = 0;

	float64 last_time = os_get_current_time_in_seconds();
	while (!window.should_close) {
		reset_temporary_storage();

		draw_frame.projection = m4_make_orthographic_projection(window.width * -0.5, window.width * 0.5, window.height * -0.5, window.height * 0.5, -1, 10);
		float zoom = 5.3;
		draw_frame.view = m4_make_scale(v3(1.0/zoom, 1.0/zoom, 1.0));

		float64 now = os_get_current_time_in_seconds();
		float64 delta_t = now - last_time;
		last_time = now;
		
		os_update();

		if (is_key_just_pressed(KEY_ESCAPE)) {
			window.should_close = true;
		}

		Vector2 input_axis = v2(0, 0);
		if (is_key_down('A')) {
			input_axis.x -= 1.0;
		}
		if (is_key_down('D')) {
			input_axis.x += 1.0;
		}
		if (is_key_down('S')) {
			input_axis.y -= 1.0;
		}
		if (is_key_down('W')) {
			input_axis.y += 1.0;
		}
		input_axis = v2_normalize(input_axis);

		player_pos = v2_add(player_pos, v2_mulf(input_axis, 100.0 * delta_t));
		
		Vector2 size = v2(6.0, 8.0);
		Matrix4 xform = m4_scalar(1.0);
		xform         = m4_translate(xform, v3(player_pos.x, player_pos.y, 0));
		xform         = m4_translate(xform, v3(size.x * -0.5, 0.0, 0));
		draw_image_xform(player, xform, size, COLOR_RED);
		
		gfx_update();
		seconds_counter += delta_t;
		frame_count += 1;
		if (seconds_counter > 1.0) {
			log("fps: %i", frame_count);
			seconds_counter = 0.0;
			frame_count = 0;
		}
	}

	return 0;
}