Super Tux - Game Loop!
- by Bill Kendrick
+ by Bill Kendrick & Tobias Glaesser
bill@newbreedsoftware.com
http://www.newbreedsoftware.com/supertux/
- April 11, 2000 - January 1st, 2004
+ April 11, 2000 - February 1st, 2004
*/
#include <stdio.h>
SDLKey key;
char level_subset[100];
char str[60];
-timer_type time_left;
float fps_fps;
/* Local function prototypes: */
clearscreen(0, 0, 0);
sprintf(str, "LEVEL %d", level);
- drawcenteredtext(str, 200, letters_red, NO_UPDATE, 1);
+ text_drawf(&red_text, str, 0, 200, A_HMIDDLE, A_TOP, 1, NO_UPDATE);
sprintf(str, "%s", current_level.name);
- drawcenteredtext(str, 224, letters_gold, NO_UPDATE, 1);
+ text_drawf(&gold_text, str, 0, 224, A_HMIDDLE, A_TOP, 1, NO_UPDATE);
sprintf(str, "TUX x %d", tux.lives);
- drawcenteredtext(str, 256, letters_blue, NO_UPDATE, 1);
+ text_drawf(&blue_text, str, 0, 256, A_HMIDDLE, A_TOP, 1, NO_UPDATE);
flipscreen();
void start_timers(void)
{
timer_start(&time_left,current_level.time_left*1000);
+ st_pause_ticks_init();
+ update_time = st_get_ticks();
}
void activate_bad_guys(void)
/* Check for menu-events, if the menu is shown */
if(show_menu)
- menu_event(key);
+ menu_event(&event.key.keysym);
+
+ if(player_keydown_event(&tux,key))
+ break;
- if(player_keydown_event(&tux,key))
- break;
-
switch(key)
{
case SDLK_ESCAPE: /* Escape: Open/Close the menu: */
if(!game_pause)
{
if(show_menu)
+ {
show_menu = 0;
+ st_pause_ticks_stop();
+ }
else
+ {
show_menu = 1;
+ st_pause_ticks_start();
+ }
}
break;
default:
break;
case SDL_KEYUP: /* A keyrelease! */
key = event.key.keysym.sym;
-
- if(player_keyup_event(&tux,key))
- break;
-
+
+ if(player_keyup_event(&tux,key))
+ break;
+
switch(key)
{
case SDLK_p:
if(!show_menu)
{
if(game_pause)
+ {
game_pause = 0;
+ st_pause_ticks_stop();
+ }
else
+ {
game_pause = 1;
+ st_pause_ticks_start();
+ }
}
break;
case SDLK_TAB:
if(debug_mode == YES)
timer_start(&tux.invincible_timer,TUX_INVINCIBLE_TIME);
break;
+ case SDLK_l:
+ if(debug_mode == YES)
+ --tux.lives;
+ break;
+ case SDLK_s:
+ if(debug_mode == YES)
+ score += 1000;
+ break;
default:
break;
}
switch(event.jaxis.axis)
{
case JOY_X:
- printf("X: %d\n", event.jaxis.value);
if (event.jaxis.value < -1024)
tux.input.left = DOWN;
else if (event.jaxis.value > 1024)
level++;
next_level = 0;
drawresultscreen();
- player_level_begin(&tux);
+ player_level_begin(&tux);
}
else
{
{
drawendscreen();
- if (score > highscore)
+ if (score > hs_score)
save_hs(score);
unloadlevelgfx();
unloadlevelsong();
/* --- GAME DRAW! --- */
-void game_draw()
+void game_draw(void)
{
- int x, y, i;
+ int x, y, i, s;
/* Draw screen: */
if (tux.dying && (frame % 4) == 0)
clearscreen(255, 255, 255);
+ else if(timer_check(&super_bkgd_timer))
+ texture_draw(&img_super_bkgd, 0, 0, NO_UPDATE);
else
{
- if (timer_check(&super_bkgd_timer))
- texture_draw(&img_super_bkgd, 0, 0, NO_UPDATE);
+ /* Draw the real background */
+ if(current_level.bkgd_image[0] != '\0')
+ {
+ s = scroll_x / 30;
+ texture_draw_part(&img_bkgd,s,0,0,0,img_bkgd.w - s, img_bkgd.h, NO_UPDATE);
+ texture_draw_part(&img_bkgd,0,0,screen->w - s ,0,s,img_bkgd.h, NO_UPDATE);
+ }
else
- clearscreen(current_level.bkgd_red, current_level.bkgd_green, current_level.bkgd_blue);
+ {
+ clearscreen(current_level.bkgd_red, current_level.bkgd_green, current_level.bkgd_blue);
+ }
}
/* Draw background: */
if(game_pause)
- drawcenteredtext("PAUSE",230,letters_red, NO_UPDATE, 1);
+ text_drawf(&red_text, "PAUSE", 0, 230, A_HMIDDLE, A_TOP, 1, NO_UPDATE);
if(show_menu)
done = drawmenu();
{
/*Uint32 last_time, now_time*/
- int fps_cnt;
+ int fps_cnt, jump;
timer_type fps_timer, frame_timer;
/* Clear screen: */
loadlevelgfx(¤t_level);
activate_bad_guys();
loadlevelsong();
- highscore = load_hs();
+ load_hs();
player_init(&tux);
/* --- MAIN GAME LOOP!!! --- */
+ jump = NO;
done = 0;
quit = 0;
frame = 0;
game_draw();
do
{
- /*last_time = SDL_GetTicks();*/
+ jump = NO;
+
+ /* Set the time the last update and the time of the current update */
+ last_update_time = update_time;
+ update_time = st_get_ticks();
+
+ /* Calculate the movement-factor */
+ frame_ratio = ((double)(update_time-last_update_time))/((double)FRAME_RATE);
+
if(!timer_check(&frame_timer))
- {
- timer_start(&frame_timer,25);
- ++frame;
- }
+ {
+ timer_start(&frame_timer,25);
+ ++frame;
+ }
/* Handle events: */
tux.input.old_fire = tux.input.fire;
+ printf("%lf\n",frame_ratio);
+
game_event();
}
else
SDL_Delay(50);
-
+
+ if(tux.input.down == DOWN)
+ SDL_Delay(30);
+
/*Draw the current scene to the screen */
+ /*If the machine running the game is too slow
+ skip the drawing of the frame (so the calculations are more precise and
+ the FPS aren't affected).*/
+ /*if( ! fps_fps < 50.0 )
+ game_draw();
+ else
+ jump = YES;*/ /*FIXME: Implement this tweak right.*/
game_draw();
/* Time stops in pause mode */
continue;
}
- /* Pause til next frame: */
+ /* Pause till next frame, if the machine running the game is too fast: */
+ /* FIXME: Works great for in OpenGl mode, where the CPU doesn't have to do that much. But
+ the results in SDL mode aren't perfect (thought the 100 FPS are reached), even on an AMD2500+. */
+ if(last_update_time >= update_time - 12 && jump != YES )
+ SDL_Delay(10);
- /*now_time = SDL_GetTicks();
- if (now_time < last_time + FPS)
- SDL_Delay(last_time + FPS - now_time);*/
- /*printf("%d",timer_get_left(&frame_timer));*/
- /*SDL_Delay(timer_get_left(&frame_timer) );*/
- SDL_Delay(10);
-
/* Handle time: */
/* Calculate frames per second */
if(show_fps)
{
- fps_fps = ((float)1000 / (float)timer_get_gone(&fps_timer)) * (float)fps_cnt;
- ++fps_cnt;
+ ++fps_cnt;
+ fps_fps = (1000.0 / (float)timer_get_gone(&fps_timer)) * (float)fps_cnt;
if(!timer_check(&fps_timer))
{
else if (c >= 'c' && c <= 'f')
texture_draw(&img_cloud[1][c - 'c'], x, y, NO_UPDATE);
else if (c >= 'G' && c <= 'J')
- texture_draw(&img_bkgd[0][c - 'G'], x, y, NO_UPDATE);
+ texture_draw(&img_bkgd_tile[0][c - 'G'], x, y, NO_UPDATE);
else if (c >= 'g' && c <= 'j')
- texture_draw(&img_bkgd[1][c - 'g'], x, y, NO_UPDATE);
+ texture_draw(&img_bkgd_tile[1][c - 'g'], x, y, NO_UPDATE);
else if (c == '#')
texture_draw(&img_solid[0], x, y, NO_UPDATE);
else if (c == '[')
int i;
sprintf(str, "%d", score);
- drawtext("SCORE", 0, 0, letters_blue, NO_UPDATE, 1);
- drawtext(str, 96, 0, letters_gold, NO_UPDATE, 1);
-
- sprintf(str, "%d", highscore);
- drawtext("HIGH", 0, 20, letters_blue, NO_UPDATE, 1);
- drawtext(str, 96, 20, letters_gold, NO_UPDATE, 1);
+ text_draw(&blue_text, "SCORE", 0, 0, 1, NO_UPDATE);
+ text_draw(&gold_text, str, 96, 0, 1, NO_UPDATE);
+ sprintf(str, "%d", hs_score);
+ text_draw(&blue_text, "HIGH", 0, 20, 1, NO_UPDATE);
+ text_draw(&gold_text, str, 96, 20, 1, NO_UPDATE);
+
if (timer_get_left(&time_left) > TIME_WARNING || (frame % 10) < 5)
{
sprintf(str, "%d", timer_get_left(&time_left) / 1000 );
- drawtext("TIME", 224, 0, letters_blue, NO_UPDATE, 1);
- drawtext(str, 304, 0, letters_gold, NO_UPDATE, 1);
+ text_draw(&blue_text, "TIME", 224, 0, 1, NO_UPDATE);
+ text_draw(&gold_text, str, 304, 0, 1, NO_UPDATE);
}
sprintf(str, "%d", distros);
- drawtext("DISTROS", screen->h, 0, letters_blue, NO_UPDATE, 1);
- drawtext(str, 608, 0, letters_gold, NO_UPDATE, 1);
+ text_draw(&blue_text, "DISTROS", screen->h, 0, 1, NO_UPDATE);
+ text_draw(&gold_text, str, 608, 0, 1, NO_UPDATE);
- drawtext("LIVES", screen->h, 20, letters_blue, NO_UPDATE, 1);
+ text_draw(&blue_text, "LIVES", screen->h, 20, 1, NO_UPDATE);
if(show_fps)
{
- drawtext("FPS", screen->h, 40, letters_blue, NO_UPDATE, 1);
sprintf(str, "%f", fps_fps);
- if(use_gl) /* FIXME: We need this check as text doesn't work in OpenGl mode. */
- printf("%f\n",fps_fps);
- drawtext(str, screen->h + 60, 40, letters_gold, NO_UPDATE, 1);
+ text_draw(&blue_text, "FPS", screen->h, 40, 1, NO_UPDATE);
+ text_draw(&blue_text, str, screen->h + 60, 40, 1, NO_UPDATE);
}
for(i=0; i < tux.lives; ++i)
clearscreen(0, 0, 0);
- drawcenteredtext("GAMEOVER", 200, letters_red, NO_UPDATE, 1);
+ text_drawf(&blue_text, "GAMEOVER", 0, 200, A_HMIDDLE, A_TOP, 1, NO_UPDATE);
sprintf(str, "SCORE: %d", score);
- drawcenteredtext(str, 224, letters_gold, NO_UPDATE, 1);
+ text_drawf(&gold_text, str, 0, 224, A_HMIDDLE, A_TOP, 1, NO_UPDATE);
sprintf(str, "DISTROS: %d", distros);
- drawcenteredtext(str, 256, letters_blue, NO_UPDATE, 1);
+ text_drawf(&gold_text, str, 0, 256, A_HMIDDLE, A_TOP, 1, NO_UPDATE);
flipscreen();
SDL_Delay(2000);
clearscreen(0, 0, 0);
- drawcenteredtext("Result:", 200, letters_red, NO_UPDATE, 1);
+ text_drawf(&red_text, "Result:", 0, 200, A_HMIDDLE, A_TOP, 1, NO_UPDATE);
sprintf(str, "SCORE: %d", score);
- drawcenteredtext(str, 224, letters_gold, NO_UPDATE, 1);
+ text_drawf(&gold_text, str, 0, 224, A_HMIDDLE, A_TOP, 1, NO_UPDATE);
sprintf(str, "DISTROS: %d", distros);
- drawcenteredtext(str, 256, letters_blue, NO_UPDATE, 1);
+ text_drawf(&gold_text, str, 0, 256, A_HMIDDLE, A_TOP, 1, NO_UPDATE);
flipscreen();
SDL_Delay(2000);
projects / supertux.git / blobdiff