Add another typedef in the demo game.
Chris Pressey
4 years ago
| 16 | 16 | // assigned to it. |
| 17 | 17 | // |
| 18 | 18 | // This type is also used as the type for the location the old interrupt vector |
| 19 | // is backed up to, because all the game state routines "goto" the old handler | |
| 19 | // is backed up to, because all the game state routines `goto` the old handler | |
| 20 | 20 | // and the end of their own routines, so the type needs to be compatible. |
| 21 | 21 | // (In a good sense, it is a continuation.) |
| 22 | 22 | // |
| 38 | 38 | screen, screen1, screen2, screen3, screen4, colormap1, colormap2, colormap3, colormap4 |
| 39 | 39 | trashes a, x, y, c, z, n, v, ptr, save_x, compare_target |
| 40 | 40 | game_state_routine |
| 41 | ||
| 42 | // | |
| 43 | // Routines that are called to get the new state of each actor (player, enemy, etc.) | |
| 44 | // | |
| 45 | // Routines that conform to this type also follow this convention: | |
| 46 | // | |
| 47 | // Set carry if the player perished. Carry clear otherwise. | |
| 48 | // | |
| 49 | ||
| 50 | typedef routine | |
| 51 | inputs pos, delta, joy2, screen | |
| 52 | outputs pos, delta, new_pos, screen, c | |
| 53 | trashes a, x, y, z, n, v, ptr, compare_target | |
| 54 | logic_routine | |
| 41 | 55 | |
| 42 | 56 | // ---------------------------------------------------------------- |
| 43 | 57 | // System Locations |
| 250 | 264 | // Actor Logics |
| 251 | 265 | // ---------------------------------------------------------------- |
| 252 | 266 | |
| 253 | // | |
| 254 | // Sets carry if the player perished. Carry clear otherwise. | |
| 255 | // | |
| 256 | ||
| 257 | routine player_logic | |
| 258 | inputs pos, delta, joy2, screen | |
| 259 | outputs pos, delta, new_pos, screen, c | |
| 260 | trashes a, x, y, z, n, v, ptr, compare_target | |
| 267 | define player_logic logic_routine | |
| 261 | 268 | { |
| 262 | 269 | call read_stick |
| 263 | 270 | |
| 312 | 319 | } |
| 313 | 320 | } |
| 314 | 321 | |
| 315 | // | |
| 316 | // Sets carry if the player perished. Carry clear otherwise. | |
| 317 | // | |
| 318 | ||
| 319 | routine enemy_logic | |
| 320 | inputs pos, delta, screen | |
| 321 | outputs pos, delta, new_pos, screen, c | |
| 322 | trashes a, x, y, z, n, v, ptr, compare_target | |
| 322 | define enemy_logic logic_routine | |
| 323 | 323 | { |
| 324 | 324 | call calculate_new_position |
| 325 | 325 | call check_new_position_in_bounds |
| 384 | 384 | // ---------------------------------------------------------------- |
| 385 | 385 | // Game States |
| 386 | 386 | // ---------------------------------------------------------------- |
| 387 | ||
| 388 | // | |
| 389 | // Because these all `goto save_cinv` at the end, they must have the same signature as that routine. | |
| 390 | // | |
| 391 | 387 | |
| 392 | 388 | define game_state_title_screen game_state_routine |
| 393 | 389 | { |