provide Snake POV control option in Menuconfig
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@ -9,7 +9,6 @@ comment "Animations"
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bool "Joern1" ANIMATION_JOERN1
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dep_bool_menu "Snake" ANIMATION_SNAKE $RANDOM_SUPPORT
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int "Snake Game Round Delay" SNAKE_GAME_DELAY 200
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int "Snake Anim Round Delay" SNAKE_ANIM_DELAY 100
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int "Snake Termination Delay" SNAKE_TERMINATION_DELAY 60
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uint "Snake Max Length" SNAKE_MAX_LENGTH 64
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@ -7,7 +7,13 @@ comment "Games"
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endmenu
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dep_bool "Space Invaders" GAME_SPACE_INVADERS $JOYSTICK_SUPPORT $RANDOM_SUPPORT
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dep_bool "Snake" GAME_SNAKE $JOYSTICK_SUPPORT $RANDOM_SUPPORT
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dep_bool_menu "Snake" GAME_SNAKE y $JOYSTICK_SUPPORT $RANDOM_SUPPORT
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bool "POV Controls" SNAKE_POV_CONTROL n
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int "Snake Game Round Delay" SNAKE_GAME_DELAY 200
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endmenu
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dep_bool "Breakout" GAME_BREAKOUT $JOYSTICK_SUPPORT $RANDOM_SUPPORT
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dep_bool "Kart" GAME_KART $JOYSTICK_SUPPORT $RANDOM_SUPPORT
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endmenu
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@ -37,11 +37,13 @@ game_descriptor_t snake_game_descriptor __attribute__((section(".game_descriptor
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#endif
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/**
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* If defined, joystick controls are NOT as "seen" by the snake but absolute,
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* that is, if pressing up, snake goes up, etc.
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*/
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#define SNAKE_NEWCONTROL
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#ifdef DOXYGEN
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/**
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* If defined, joystick controls are bound to the point of view of the
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* snake, i.e. only the left an right joystick direction can be used.
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*/
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#define SNAKE_POV_CONTROL
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#endif
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#if !defined USNAKE_MAX_LENGTH || defined DOXYGEN
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/** The maximum length of the snake. */
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@ -229,21 +231,10 @@ static void snake_userControl(snake_protagonist_t *pprotSnake,
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snake_dir_t *pdirLast)
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{
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snake_dir_t dirJoystick = snake_queryJoystick();
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#ifdef SNAKE_NEWCONTROL
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if (dirJoystick != SNAKE_DIR_NONE)
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{
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// valid transitions can only be uneven
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if (((pprotSnake->dir + dirJoystick) & 0x01) &&
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!pprotSnake->bJoystickLocked)
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{
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pprotSnake->dir = dirJoystick;
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}
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// we query the joystick twice as fast as we move the snake, so we
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// have to ensure that it does not bite its head with its head...uh
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pprotSnake->bJoystickLocked = true;
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}
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#else
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if ((dirJoystick ^ *pdirLast) && (dirJoystick != SNAKE_DIR_NONE))
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# ifdef SNAKE_POV_CONTROL
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if ((dirJoystick ^ *pdirLast) && (dirJoystick != SNAKE_DIR_NONE) &&
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(!pprotSnake->bJoystickLocked))
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{
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// only left or right movements are valid
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if (dirJoystick & 0x01)
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@ -257,7 +248,20 @@ static void snake_userControl(snake_protagonist_t *pprotSnake,
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pprotSnake->bJoystickLocked = true;
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}
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*pdirLast = dirJoystick;
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#endif
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# else
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if (dirJoystick != SNAKE_DIR_NONE)
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{
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// valid transitions can only be uneven
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if (((pprotSnake->dir + dirJoystick) & 0x01) &&
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!pprotSnake->bJoystickLocked)
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{
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pprotSnake->dir = dirJoystick;
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}
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// we query the joystick twice as fast as we move the snake, so we
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// have to ensure that it does not bite its head with its head...uh
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pprotSnake->bJoystickLocked = true;
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}
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# endif
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}
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#endif
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