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Display message on-screen at start of game.

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This commit is contained in:
Chris Pressey 2017-12-13 12:24:11 +00:00
parent 75cc1f6b25
commit 9c7082db6e
1 changed files with 15 additions and 9 deletions
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24
eg/proto-game.60p
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@ -29,14 +29,16 @@ byte joy2 @ $dc00
pointer ptr @ 254
word pos
word delta
byte button_down : 0 // effectively static-local to check_button
byte table press_fire_msg: "PRESS`FIRE`TO`PLAY"
//
// Points to the routine that implements the current game state.
//
vector dispatch_game_state
inputs joy2, pos, button_down, dispatch_game_state
inputs joy2, pos, button_down, press_fire_msg, dispatch_game_state
outputs delta, pos, screen, screen1, button_down, dispatch_game_state
trashes a, x, y, c, z, n, v, ptr
@ -53,13 +55,13 @@ vector dispatch_game_state
//
vector cinv
inputs joy2, pos, button_down, dispatch_game_state
inputs joy2, pos, button_down, press_fire_msg, dispatch_game_state
outputs delta, pos, screen, screen1, button_down, dispatch_game_state
trashes a, x, y, c, z, n, v, ptr
@ 788
vector save_cinv
inputs joy2, pos, button_down, dispatch_game_state
inputs joy2, pos, button_down, press_fire_msg, dispatch_game_state
outputs delta, pos, screen, screen1, button_down, dispatch_game_state
trashes a, x, y, c, z, n, v, ptr
@ -163,7 +165,7 @@ routine clear_screen
//
routine game_state_play
inputs joy2, pos, button_down, dispatch_game_state
inputs joy2, pos, button_down, press_fire_msg, dispatch_game_state
outputs delta, pos, screen, screen1, button_down, dispatch_game_state
trashes a, x, y, c, z, n, v, ptr
{
@ -183,16 +185,20 @@ routine game_state_play
}
routine game_state_title_screen
inputs joy2, pos, button_down, dispatch_game_state
inputs joy2, pos, button_down, press_fire_msg, dispatch_game_state
outputs delta, pos, screen, screen1, button_down, dispatch_game_state
trashes a, x, y, c, z, n, v, ptr
{
ld y, 10
ld y, 0
repeat {
ld a, 90
ld a, press_fire_msg + y
st on, c
sub a, 64 // yuck. oh well
st a, screen1 + y
inc y
cmp y, 20
cmp y, 18
} until z
st off, c
@ -212,7 +218,7 @@ routine game_state_title_screen
// *************************
routine our_cinv
inputs joy2, pos, button_down, dispatch_game_state
inputs joy2, pos, button_down, press_fire_msg, dispatch_game_state
outputs delta, pos, screen, screen1, button_down, dispatch_game_state
trashes a, x, y, c, z, n, v, ptr
{