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Use word tables, in game, to store the actors' positions and deltas.
This commit is contained in:
Chris Pressey
parent
d9c9dab9e7
commit
1478db0fb4
@ -27,12 +27,18 @@ byte joy2 @ $dc00
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// ----------------------------------------------------------------
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pointer ptr @ 254
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word table actor_pos
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word pos
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word table actor_delta
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word delta
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byte button_down : 0 // effectively static-local to check_button
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byte table press_fire_msg: "PRESS`FIRE`TO`PLAY"
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byte save_x
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//
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// Points to the routine that implements the current game state.
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//
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@ -44,9 +50,11 @@ byte table press_fire_msg: "PRESS`FIRE`TO`PLAY"
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//
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vector dispatch_game_state
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inputs joy2, pos, button_down, press_fire_msg, dispatch_game_state,
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screen1, screen2, screen3, screen4, colormap1, colormap2, colormap3, colormap4
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outputs delta, pos, button_down, dispatch_game_state,
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inputs joy2, button_down, press_fire_msg, dispatch_game_state, save_x,
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actor_pos, pos, actor_delta, delta,
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screen, screen1, screen2, screen3, screen4, colormap1, colormap2, colormap3, colormap4
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outputs button_down, dispatch_game_state, save_x,
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actor_pos, pos, actor_delta, delta,
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screen, screen1, screen2, screen3, screen4, colormap1, colormap2, colormap3, colormap4
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trashes a, x, y, c, z, n, v, ptr
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@ -63,17 +71,21 @@ vector dispatch_game_state
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//
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vector cinv
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inputs joy2, pos, button_down, press_fire_msg, dispatch_game_state,
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screen1, screen2, screen3, screen4, colormap1, colormap2, colormap3, colormap4
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outputs delta, pos, button_down, dispatch_game_state,
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inputs joy2, button_down, press_fire_msg, dispatch_game_state, save_x,
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actor_pos, pos, actor_delta, delta,
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screen, screen1, screen2, screen3, screen4, colormap1, colormap2, colormap3, colormap4
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outputs button_down, dispatch_game_state, save_x,
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actor_pos, pos, actor_delta, delta,
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screen, screen1, screen2, screen3, screen4, colormap1, colormap2, colormap3, colormap4
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trashes a, x, y, c, z, n, v, ptr
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@ 788
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vector save_cinv
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inputs joy2, pos, button_down, press_fire_msg, dispatch_game_state,
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screen1, screen2, screen3, screen4, colormap1, colormap2, colormap3, colormap4
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outputs delta, pos, button_down, dispatch_game_state,
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inputs joy2, button_down, press_fire_msg, dispatch_game_state, save_x,
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actor_pos, pos, actor_delta, delta,
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screen, screen1, screen2, screen3, screen4, colormap1, colormap2, colormap3, colormap4
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outputs button_down, dispatch_game_state, save_x,
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actor_pos, pos, actor_delta, delta,
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screen, screen1, screen2, screen3, screen4, colormap1, colormap2, colormap3, colormap4
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trashes a, x, y, c, z, n, v, ptr
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@ -169,18 +181,12 @@ routine clear_screen
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}
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// ----------------------------------------------------------------
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// Game States
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// Actor Logics
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// ----------------------------------------------------------------
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//
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// Because these all `goto save_cinv` at the end, they must have the same signature as that routine.
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//
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routine game_state_play
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inputs joy2, pos, button_down, press_fire_msg, dispatch_game_state,
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screen1, screen2, screen3, screen4, colormap1, colormap2, colormap3, colormap4
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outputs delta, pos, button_down, dispatch_game_state,
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screen, screen1, screen2, screen3, screen4, colormap1, colormap2, colormap3, colormap4
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routine player_logic
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inputs pos, delta, joy2, screen
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outputs pos, delta, screen
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trashes a, x, y, c, z, n, v, ptr
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{
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call read_stick
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@ -194,14 +200,68 @@ routine game_state_play
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ld y, 0
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copy 81, [ptr] + y
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}
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routine enemy_logic
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inputs pos, delta, joy2, screen
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outputs pos, delta, screen
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trashes a, x, y, c, z, n, v, ptr
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{
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}
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// ----------------------------------------------------------------
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// Game States
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// ----------------------------------------------------------------
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//
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// Because these all `goto save_cinv` at the end, they must have the same signature as that routine.
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//
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routine game_state_play
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inputs joy2, button_down, press_fire_msg, dispatch_game_state, save_x,
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actor_pos, pos, actor_delta, delta,
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screen, screen1, screen2, screen3, screen4, colormap1, colormap2, colormap3, colormap4
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outputs button_down, dispatch_game_state, save_x,
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actor_pos, pos, actor_delta, delta,
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screen, screen1, screen2, screen3, screen4, colormap1, colormap2, colormap3, colormap4
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trashes a, x, y, c, z, n, v, ptr
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{
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ld x, 0
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repeat {
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copy actor_pos + x, pos
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copy actor_delta + x, delta
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st x, save_x
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////// FIXME need VECTOR TABLEs to make this happen:
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////// copy actor_logic, x dispatch_logic
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////// call indirect_jsr_logic
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cmp x, 0
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if z {
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call player_logic
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} else {
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call enemy_logic
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}
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ld x, save_x
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copy pos, actor_pos + x
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copy delta, actor_delta + x
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inc x
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cmp x, 16
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} until z
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goto save_cinv
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}
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routine game_state_title_screen
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inputs joy2, pos, button_down, press_fire_msg, dispatch_game_state,
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screen1, screen2, screen3, screen4, colormap1, colormap2, colormap3, colormap4
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outputs delta, pos, button_down, dispatch_game_state,
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inputs joy2, button_down, press_fire_msg, dispatch_game_state, save_x,
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actor_pos, pos, actor_delta, delta,
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screen, screen1, screen2, screen3, screen4, colormap1, colormap2, colormap3, colormap4
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outputs button_down, dispatch_game_state, save_x,
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actor_pos, pos, actor_delta, delta,
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screen, screen1, screen2, screen3, screen4, colormap1, colormap2, colormap3, colormap4
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trashes a, x, y, c, z, n, v, ptr
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{
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@ -239,9 +299,11 @@ routine game_state_title_screen
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// *************************
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routine our_cinv
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inputs joy2, pos, button_down, press_fire_msg, dispatch_game_state,
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screen1, screen2, screen3, screen4, colormap1, colormap2, colormap3, colormap4
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outputs delta, pos, button_down, dispatch_game_state,
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inputs joy2, button_down, press_fire_msg, dispatch_game_state, save_x,
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actor_pos, pos, actor_delta, delta,
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screen, screen1, screen2, screen3, screen4, colormap1, colormap2, colormap3, colormap4
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outputs button_down, dispatch_game_state, save_x,
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actor_pos, pos, actor_delta, delta,
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screen, screen1, screen2, screen3, screen4, colormap1, colormap2, colormap3, colormap4
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trashes a, x, y, c, z, n, v, ptr
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{
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