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#include <stdint.h>
#include <unistd.h>
#include "game.h"
#include "SDL_keycode.h"
#include "game/physics/movement.h"
#include "game/world/bsp.h"
#include "game/world/draw.h"
#include "render/gl_2d.h"
#include "render/gl_3d.h"
#include "render/gl_2d_font.h"
#include "editor/editor.h"
#include "game/assets.h"
#include "game/vars.h"
#include "game/objlist.h"
#include "game/world/map.h"
#include "gui.h"
#include "render/gl_batch.h"
#include "util.h"
#include "util/input.h"
#include "util/profiler.h"
#include "util/time.h"
CVAR* g_timescale = var_new( "g_timescale", 1.f );
static void game_realtime_resize_repaint( void* userdata );
GAME_DATA* game_init( GL_DATA* gl ) {
GAME_DATA* game = (GAME_DATA*)malloc( sizeof( GAME_DATA ) );
memset( game, 0, sizeof(GAME_DATA) );
game->gl = gl;
profiler_init();
VEC2 screensize = { (F32)gl->canvas_size[0], (F32)gl->canvas_size[1] };
game->shaders.gl2d = gl_2d_init( gl, screensize, "2d" );
game->shaders.gl3d = gl_3d_init( gl, screensize, "3d" );
game_create_batches( game );
assets_init( game );
assets_on_frame( game );
objl = objl_init();
gmove_init( game );
#if IS_EDITOR
game->editor = editor_create( game );
#else
gui_create( game );
game->state.ingame = 1;
#endif
gl_set_resize_repaint_callback( gl, game_realtime_resize_repaint, game );
return game;
}
void game_create_batches( GAME_DATA *game ) {
game->render.batch_2d = gl_batch_create( game->gl, game->shaders.gl2d, &gl_2d_batch_setup );
game->render.batch_3d = gl_batch_create( game->gl, game->shaders.gl3d, &gl_3d_batch_setup );
}
#if defined(DEBUG) && !IS_EDITOR
void game_draw_fpsoverlay( GAME_DATA* game ) {
GL_DATA* gl = game->gl;
char buf[256];
sprintf( buf, "fps: %1.3f (%2.5f ms) %dx%d", gl->fps, gl->frametime, canvas[0], canvas[1] );
VEC2 dim = gl_font_dim( game->assets.font, buf );
gl_font_draw(
game->assets.font,
game->shaders.gl2d_texcoord,
s_tr({ -dim.x - 30.f, dim.y + 5.f }),
buf,
(CLR){ 1.f, 1.f, 1.f, 1.f }
);
}
void game_draw_fontoverlay( GAME_DATA* game ) {
for( U32 i = 0; i < 255; ++i ) {
char str[64];
sprintf( str, "%d:%c", i, (char)i );
gl_font_draw(
game->assets.jpn12,
game->shaders.gl2d_texcoord,
s_tl({ 10.f + ( i % 18 ) * 33,
280.f + floorf( i / 18.f ) * 14.f }),
str,
CLR::WHITE()
);
}
}
#endif
WORLD_MAP* game_load_map( GAME_DATA* game, const char* mapname ) {
WORLD_MAP* m = map_from_file( game, mapname );
if( !m ) {
dlog( "game_load_map() : failed to load file %s", mapname );
return 0;
}
bsp_build_map( m );
objl_load_world( game, m );
game->state.map = m;
return m;
}
void game_unload_map( GAME_DATA* game ) {
map_free( game, game->state.map );
game->state.map = 0;
objl_clear( 1 );
}
void game_draw( GAME_DATA* game ) {
if( !objl->pl || !objl->world ) {
dlog( "game_draw() : no world" );
return;
}
VEC2 window = { 270.f, 25.f };
VEC2 winsize = { 480.f, 360.f };
gl_2d_rect( game->shaders.gl2d, window, winsize, (CLR){ 0.3f, 0.3f, 0.3f, 1.f } );
world_draw( game, objl->world, window, winsize );
}
void game_realtime_resize_repaint( void* userdata ) {
GAME_DATA* game = (GAME_DATA*)userdata;
if( !game || !game->gl )
return;
GL_DATA* gl = game->gl;
GL_SHADER_PROGRAM* gl2d = game->shaders.gl2d;
if( !assets_on_frame( game ) )
return;
gl_sync_window_size( gl );
#if IS_EDITOR
if( game->editor && game->editor->wnd ) {
if( game->editor->wnd->w != gl->canvas_size[0]
|| game->editor->wnd->h != gl->canvas_size[1] ) {
editor_resize( game->editor, gl->canvas_size[0], gl->canvas_size[1] );
}
}
#endif
gl_beginframe( gl );
gl_2d_frect( gl2d, s_tl(), s_br(), { 0.f, 0.f, 0.f, 1.f } );
if( game->state.ingame )
game_draw( game );
gui_draw( game );
#if defined(DEBUG) && !IS_EDITOR
game_draw_fpsoverlay( game );
#endif
SDL_GL_SwapWindow( gl->window );
}
U8 game_main_loop( GAME_DATA* game ) { _profiled
GL_DATA* gl = game->gl;
GL_SHADER_PROGRAM* gl2d = game->shaders.gl2d;
if( !OK( gl_poll_events( gl ) ) )
return 1;
if( !assets_on_frame( game ) )
return 0;
gl_sync_window_size( gl );
gl_beginframe( gl );
#if IS_EDITOR
if( game->editor && game->editor->wnd ) {
if( game->editor->wnd->w != gl->canvas_size[0]
|| game->editor->wnd->h != gl->canvas_size[1] ) {
editor_resize( game->editor, gl->canvas_size[0], gl->canvas_size[1] );
}
}
#endif
gl_2d_frect( gl2d, s_tl(), s_br(), { 0.f, 0.f, 0.f, 1.f } );
player_input( game, objl->pl );
if( game->state.ingame ) {
game_on_tick( game );
game_draw( game );
}
gui_onframe( game );
profiler_draw_tree( game->assets.jpn12 );
#if defined(DEBUG) && !IS_EDITOR
game_draw_fpsoverlay( game );
#endif
if( !OK( gl_endframe( gl ) ) )
return 1;
return input_is_key_down( SDLK_ESCAPE );
}
void game_on_tick( GAME_DATA* game ) { _profiled
U64 tick = u_tick();
U64 ticks = TICK_INTERVAL * TICK_RESOLUTION;
F32 ts = var_getf( g_timescale );
if( ts != 1.f && ts > 0.f )
ticks *= (1.f / ts);
else if( !ts )
ticks = INT64_MAX;
if( tick - game->state.last_tick > ticks ) {
player_move( game, objl->pl );
game->state.last_tick = tick;
}
}
void game_destroy( GAME_DATA *game ) {
gl_batch_destroy( game->render.batch_2d );
gl_batch_destroy( game->render.batch_3d );
free( game );
}
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