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Use a finite state machine

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This commit is contained in:
Michael Hayes
2013-10-03 16:40:02 +13:00
parent 95a291fd94
commit 3a1ce1fe20
1 changed files with 37 additions and 22 deletions
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apps/gobble7/gobble7.c
+37 -22
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@@ -15,17 +15,24 @@
#include "things.h"
#define DISPLAY_RATE 200
#define DISPLAY_TASK_RATE 200
#define NAVSWITCH_RATE 50
#define NAVSWITCH_TASK_RATE 50
#define THINGS_MOVE_RATE 10
#define THINGS_MOVE_TASK_RATE 10
#define MONSTER_FLASH_RATE 5
#define MONSTER_FLASH_TASK_RATE 5
static bool running = 0;
static bool game_over = 1;
typedef enum game_state
{
GAME_WAIT, /* Waiting to start. */
GAME_RUNNING, /* Things running around. */
GAME_PAUSED /* Things paused. */
} game_state_t;
static game_state_t game_state = GAME_WAIT;
static int duration = 0;
@@ -38,7 +45,7 @@ static void display_task (__unused__ void *data)
static void monster_flash_task (__unused__ void *data)
{
/* Flash the monster. */
if (running)
if (game_state == GAME_RUNNING)
things_monster_toggle ();
}
@@ -46,7 +53,7 @@ static void monster_flash_task (__unused__ void *data)
static void things_move_task (__unused__ void *data)
{
/* Move the things. */
if (running)
if (game_state == GAME_RUNNING)
{
duration++;
things_move ();
@@ -70,26 +77,34 @@ static void navswitch_task (__unused__ void *data)
/* Pause/resume things running around. */
if (navswitch_push_event_p (NAVSWITCH_PUSH))
{
if (! running && game_over)
switch (game_state)
{
case GAME_WAIT:
game_state = GAME_RUNNING;
srand (timer_get ());
tinygl_clear ();
things_create ();
duration = 0;
game_over = 0;
led_set (LED1, 1);
break;
case GAME_RUNNING:
game_state = GAME_PAUSED;
led_set (LED1, 0);
break;
case GAME_PAUSED:
game_state = GAME_RUNNING;
led_set (LED1, 1);
break;
}
running = !running;
led_set (LED1, running);
}
if (running && things_killed_p ())
if (game_state == GAME_RUNNING && things_killed_p ())
{
char buffer[6];
running = 0;
game_over = 1;
game_state = GAME_WAIT;
led_set (LED1, 0);
sprintf (buffer, "%d", duration);
tinygl_text (buffer);
@@ -101,10 +116,10 @@ int main (void)
{
task_t tasks[] =
{
{.func = display_task, .period = TASK_RATE / DISPLAY_RATE},
{.func = navswitch_task, .period = TASK_RATE / NAVSWITCH_RATE},
{.func = things_move_task, .period = TASK_RATE / THINGS_MOVE_RATE},
{.func = monster_flash_task, .period = TASK_RATE / MONSTER_FLASH_RATE},
{.func = display_task, .period = TASK_RATE / DISPLAY_TASK_RATE},
{.func = navswitch_task, .period = TASK_RATE / NAVSWITCH_TASK_RATE},
{.func = things_move_task, .period = TASK_RATE / THINGS_MOVE_TASK_RATE},
{.func = monster_flash_task, .period = TASK_RATE / MONSTER_FLASH_TASK_RATE},
};
@@ -113,7 +128,7 @@ int main (void)
led_init ();
led_set (LED1, 0);
tinygl_init (DISPLAY_RATE);
tinygl_init (DISPLAY_TASK_RATE);
tinygl_font_set (&font3x5_1);
tinygl_text_mode_set (TINYGL_TEXT_MODE_SCROLL);
tinygl_text_dir_set (TINYGL_TEXT_DIR_ROTATE);