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Clear the screen when starting the game.

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This commit is contained in:
Chris Pressey 2017-12-13 12:32:24 +00:00
parent 9c7082db6e
commit d9c9dab9e7
1 changed files with 36 additions and 13 deletions
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49
eg/proto-game.60p
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@ -36,10 +36,18 @@ byte table press_fire_msg: "PRESS`FIRE`TO`PLAY"
//
// Points to the routine that implements the current game state.
//
// It's very arguable that screen1/2/3/4 and colormap1/2/3/4 are not REALLY inputs.
// They're only there to support the fact that game states sometimes clear the
// screen, and sometimes don't. When they don't, they preserve the screen, and
// currently the way to say "we preserve the screen" is to have it as both input
// and output. There is probably a better way to do this, but it needs thought.
//
vector dispatch_game_state
inputs joy2, pos, button_down, press_fire_msg, dispatch_game_state
outputs delta, pos, screen, screen1, button_down, dispatch_game_state
inputs joy2, pos, button_down, press_fire_msg, dispatch_game_state,
screen1, screen2, screen3, screen4, colormap1, colormap2, colormap3, colormap4
outputs delta, pos, button_down, dispatch_game_state,
screen, screen1, screen2, screen3, screen4, colormap1, colormap2, colormap3, colormap4
trashes a, x, y, c, z, n, v, ptr
//
@ -55,14 +63,18 @@ vector dispatch_game_state
//
vector cinv
inputs joy2, pos, button_down, press_fire_msg, dispatch_game_state
outputs delta, pos, screen, screen1, button_down, dispatch_game_state
inputs joy2, pos, button_down, press_fire_msg, dispatch_game_state,
screen1, screen2, screen3, screen4, colormap1, colormap2, colormap3, colormap4
outputs delta, pos, button_down, dispatch_game_state,
screen, screen1, screen2, screen3, screen4, colormap1, colormap2, colormap3, colormap4
trashes a, x, y, c, z, n, v, ptr
@ 788
vector save_cinv
inputs joy2, pos, button_down, press_fire_msg, dispatch_game_state
outputs delta, pos, screen, screen1, button_down, dispatch_game_state
inputs joy2, pos, button_down, press_fire_msg, dispatch_game_state,
screen1, screen2, screen3, screen4, colormap1, colormap2, colormap3, colormap4
outputs delta, pos, button_down, dispatch_game_state,
screen, screen1, screen2, screen3, screen4, colormap1, colormap2, colormap3, colormap4
trashes a, x, y, c, z, n, v, ptr
// ----------------------------------------------------------------
@ -165,8 +177,10 @@ routine clear_screen
//
routine game_state_play
inputs joy2, pos, button_down, press_fire_msg, dispatch_game_state
outputs delta, pos, screen, screen1, button_down, dispatch_game_state
inputs joy2, pos, button_down, press_fire_msg, dispatch_game_state,
screen1, screen2, screen3, screen4, colormap1, colormap2, colormap3, colormap4
outputs delta, pos, button_down, dispatch_game_state,
screen, screen1, screen2, screen3, screen4, colormap1, colormap2, colormap3, colormap4
trashes a, x, y, c, z, n, v, ptr
{
call read_stick
@ -185,8 +199,10 @@ routine game_state_play
}
routine game_state_title_screen
inputs joy2, pos, button_down, press_fire_msg, dispatch_game_state
outputs delta, pos, screen, screen1, button_down, dispatch_game_state
inputs joy2, pos, button_down, press_fire_msg, dispatch_game_state,
screen1, screen2, screen3, screen4, colormap1, colormap2, colormap3, colormap4
outputs delta, pos, button_down, dispatch_game_state,
screen, screen1, screen2, screen3, screen4, colormap1, colormap2, colormap3, colormap4
trashes a, x, y, c, z, n, v, ptr
{
ld y, 0
@ -205,9 +221,14 @@ routine game_state_title_screen
call check_button
if c {
// call clear_screen
call clear_screen
// call init_game
copy game_state_play, dispatch_game_state
ld a, 0 // FIXME we shouldn't need to.
ld y, 0 // FIXME we shouldn't need to.
st off, c // FIXME we shouldn't need to.
} else {
ld a, 0 // FIXME we shouldn't need to.
}
goto save_cinv
@ -218,8 +239,10 @@ routine game_state_title_screen
// *************************
routine our_cinv
inputs joy2, pos, button_down, press_fire_msg, dispatch_game_state
outputs delta, pos, screen, screen1, button_down, dispatch_game_state
inputs joy2, pos, button_down, press_fire_msg, dispatch_game_state,
screen1, screen2, screen3, screen4, colormap1, colormap2, colormap3, colormap4
outputs delta, pos, button_down, dispatch_game_state,
screen, screen1, screen2, screen3, screen4, colormap1, colormap2, colormap3, colormap4
trashes a, x, y, c, z, n, v, ptr
{
goto dispatch_game_state