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/*
* Copyright 2022 Frederico de Oliveira Linhares
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "camera.hpp"
#include "candy_gear.hpp"
#include "core.hpp"
#include "key.hpp"
#include "model.hpp"
#include "model/instance.hpp"
#include "sound.hpp"
#include "texture.hpp"
cg_sCore cg_core;
static void handle_error(mrb_state *mrb)
{
mrb_print_error(mrb);
cg_core.quit_game = true;
}
int main(int argc, char *argv[])
{
SDL_Event event;
Uint32 frame_start;
// Random numbers
random_number_generator.seed(random_seed());
mrb_value main_obj;
mrb_sym sym_init, sym_key_down, sym_key_up, sym_quit, sym_tick;
FILE *fp;
cg_core.config_file = argv[1];
try{ cg_sCore::loader.execute(nullptr); }
catch(const CommandError &error)
{
cg_core.log.message(Log::Level::Fatal, error.what());
return 1;
}
mrb_define_module(cg_core.mrb, "CandyGear");
cg_camera_init(cg_core.mrb);
cg_candy_gear_init(cg_core.mrb);
cg_key_init(cg_core.mrb);
cg_model_init(cg_core.mrb);
cg_model_instance_init(cg_core.mrb);
cg_sound_init(cg_core.mrb);
cg_texture_init(cg_core.mrb);
main_obj = mrb_obj_iv_inspect(cg_core.mrb, cg_core.mrb->top_self);
sym_init = mrb_intern_cstr(cg_core.mrb, "init");
sym_key_down = mrb_intern_cstr(cg_core.mrb, "key_down");
sym_key_up = mrb_intern_cstr(cg_core.mrb, "key_up");
sym_quit = mrb_intern_cstr(cg_core.mrb, "quit");
sym_tick = mrb_intern_cstr(cg_core.mrb, "tick");
fp = fopen(argv[2], "r");
mrb_load_irep_file(cg_core.mrb, fp);
fclose(fp);
if (cg_core.mrb->exc)
handle_error(cg_core.mrb);
else
{
mrb_funcall_id(cg_core.mrb, main_obj, sym_init, 0);
if (cg_core.mrb->exc) handle_error(cg_core.mrb);
}
frame_start = SDL_GetTicks();
// Game main loop.
while(!cg_core.quit_game)
{
// Get input.
while(SDL_PollEvent(&event) != 0)
{
switch(event.type)
{
case SDL_KEYDOWN:
mrb_funcall_id(
cg_core.mrb, main_obj, sym_key_down, 1,
mrb_int_value(cg_core.mrb, event.key.keysym.sym));
break;
case SDL_KEYUP:
mrb_funcall_id(
cg_core.mrb, main_obj, sym_key_up, 1,
mrb_int_value(cg_core.mrb, event.key.keysym.sym));
break;
case SDL_MOUSEMOTION:
break;
case SDL_MOUSEBUTTONDOWN:
break;
case SDL_MOUSEBUTTONUP:
break;
case SDL_QUIT:
mrb_funcall_id(cg_core.mrb, main_obj, sym_quit, 0);
break;
}
}
mrb_funcall_id(cg_core.mrb, main_obj, sym_tick, 0);
if (cg_core.mrb->exc) handle_error(cg_core.mrb);
cg_core.vk_graphics_pipeline->draw();
// Timer
{
Uint32 frame_stop, frame_duration;
frame_stop = SDL_GetTicks();
frame_duration = frame_stop - frame_start;
// If frame take less time than maximum allowed.
if(cg_core.max_frame_duration_ms > frame_duration)
SDL_Delay(cg_core.max_frame_duration_ms - frame_duration);
frame_start = frame_stop;
}
}
cg_sCore::loader.revert(nullptr);
return 0;
}
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