Home » Archimedes archive » Acorn User » AU 1996-Xmas.adf » Features » Arcade/!Gush/c/gush2
Arcade/!Gush/c/gush2
This website contains an archive of files for the Acorn Electron, BBC Micro, Acorn Archimedes, Commodore 16 and Commodore 64 computers, which Dominic Ford has rescued from his private collection of floppy disks and cassettes.
Some of these files were originally commercial releases in the 1980s and 1990s, but they are now widely available online. I assume that copyright over them is no longer being asserted. If you own the copyright and would like files to be removed, please contact me.
| Tape/disk: | Home » Archimedes archive » Acorn User » AU 1996-Xmas.adf » Features |
| Filename: | Arcade/!Gush/c/gush2 |
| Read OK: | ✔ |
| File size: | 10F3 bytes |
| Load address: | 0000 |
| Exec address: | 0000 |
File contents
/* Gush demo (2)
**
** Demonstrates the object handling features of Popcorn, this time with
** prototypes being used to make the code more readable, flexible etc.
*/
#include <stdlib.h>
#include <string.h>
#include "DeskLib:h.Error"
#include "DeskLib:h.File"
#include "DeskLib:h.Gfx"
#include "DeskLib:h.Kbd"
#include "DeskLib:h.SWI"
#include "Popcorn:h.Popcorn"
#define random(n) (rand() % (n))
struct object_table *blue_table, *yellow_table;
/* ball_handler and generator_handler are two typical object handlers for
** a Popcorn object. They contain separate little if() clauses to deal
** with each condition they could be called under. One or many of these
** conditions could be TRUE; a handler can be called for more than one
** reason at a time.
*/
void ball_handler(struct game_object *obj, union object_flags flags, void *ref)
{
/* Delete both balls if they collide; if the handler is being called for
** a collision, 'ref' will be a pointer to the other object
*/
if (flags.bits.collide)
{
Popcorn_DeleteObject(obj);
Popcorn_DeleteObject((struct game_object*) ref);
return;
}
if (flags.bits.attn_plotout) /* i.e. if ball is off the screen */
{
if (obj->x < 0 || obj->x > 319<<12) /* Bounce x velocity */
obj->xv = -obj->xv;
if (obj->y < 0 || obj->y > 255<<12) /* Bounce y velocity */
{
obj->yv = -obj->yv;
/*
** This next line is needed to stop jittering of objects when they hit
** the bottom of the screen. The jittering is caused by the effects of
** gravity; well, just remove this line and see what happens...
*/
obj->y = obj->y + obj->yv;
}
}
}
/* This function is so much shorter because of the prototyping system */
void generator_handler(struct game_object *obj, union object_flags flags, void *ref)
{
struct game_object *ball;
if ( (rand() & 3) == 0 ) /* This makes the spewing more erratic */
return;
ball = Popcorn_NewPrototype(obj->user_data, obj->object_id, obj->x, obj->y);
if (ball == NULL)
return; /* This happens when the table is full */
ball->xv = obj->xv + (random(4096)-2048);
ball->yv = obj->yv + (random(4096)-2048);
}
int main(void)
{
int frames = 1, start_time, end_time;
struct game_object *temp_obj;
/* Set up the address of the symbol table, load the resources, prototypes
** and the sprites.
*/
strcpy(symbol_table_filename, "<Gush$Dir>.Data.Symbols");
Error_CheckFatal(Popcorn_LoadResourceFile("<Gush$Dir>.Data.Resources"));
Error_CheckFatal(Popcorn_LoadPrototypes("<Gush$Dir>.Data.Prototypes"));
Error_CheckFatal(Popcorn_LoadGroup('LLAB'));
/* Initialise Popcorn sprite plotter, clear screen, and make space for
** two tables, one for blue balls, one for yellow. Then set the gravity
** on each to a moderate value (remember 4096 Popcorn units = 1 pixel)
*/
blue_table = Popcorn_NewTable(200, TRUE);
yellow_table = Popcorn_NewTable(200, TRUE);
blue_table->grav_y = yellow_table->grav_y = 256;
/* Change to mode 13 with space for two screen banks (OS_Byte 114,0) */
SWI(2, 0, SWI_OS_Byte, 114, 0);
GFX_Mode(13);
SWI(0, 0, SWI_OS_RemoveCursors);
SWI(2, 0, SWI_OS_Byte, 229, 1);
Popcorn_ReadScreenDetails();
Popcorn_ClearScreen(0);
/* Generator objects are now created from prototype file... easy peasy :-)
** This time their IDs are changed so that balls can be created from
** them more easily (see generator_handler above).
*/
temp_obj = Popcorn_NewPrototype(blue_table, 'RNEG', 10<<12, 10<<12);
temp_obj->object_id = 'EULB';
temp_obj->xv = temp_obj->yv = 4096;
temp_obj->user_data = blue_table;
temp_obj = Popcorn_NewPrototype(yellow_table, 'RNEG', 309<<12, 10<<12);
temp_obj->object_id = 'OLEY';
temp_obj->xv = -4096; temp_obj->yv = 4096;
temp_obj->user_data = yellow_table;
/* Main loop is unchanged */
do {
SWI(0, 1, SWI_OS_ReadMonotonicTime, &start_time);
Popcorn_ClearScreen(0);
Popcorn_Process(blue_table, TRUE, frames);
Popcorn_Process(yellow_table, TRUE, frames);
Popcorn_CollisionCheck(blue_table, yellow_table);
do {
SWI(0, 1, SWI_OS_ReadMonotonicTime, &end_time);
frames = (end_time - start_time) >> 1;
} while (frames == 0);
SWI(1, 0, SWI_OS_Byte, 19);
Popcorn_SwapBanks();
} while (!(Kbd_KeyDown(-113) && Kbd_KeyDown(-2)));
return(0);
}
00000000 2f 2a 20 47 75 73 68 20 64 65 6d 6f 20 28 32 29 |/* Gush demo (2)|
00000010 0a 2a 2a 0a 2a 2a 20 44 65 6d 6f 6e 73 74 72 61 |.**.** Demonstra|
00000020 74 65 73 20 74 68 65 20 6f 62 6a 65 63 74 20 68 |tes the object h|
00000030 61 6e 64 6c 69 6e 67 20 66 65 61 74 75 72 65 73 |andling features|
00000040 20 6f 66 20 50 6f 70 63 6f 72 6e 2c 20 74 68 69 | of Popcorn, thi|
00000050 73 20 74 69 6d 65 20 77 69 74 68 0a 2a 2a 20 70 |s time with.** p|
00000060 72 6f 74 6f 74 79 70 65 73 20 62 65 69 6e 67 20 |rototypes being |
00000070 75 73 65 64 20 74 6f 20 6d 61 6b 65 20 74 68 65 |used to make the|
00000080 20 63 6f 64 65 20 6d 6f 72 65 20 72 65 61 64 61 | code more reada|
00000090 62 6c 65 2c 20 66 6c 65 78 69 62 6c 65 20 65 74 |ble, flexible et|
000000a0 63 2e 0a 2a 2f 0a 0a 23 69 6e 63 6c 75 64 65 20 |c..*/..#include |
000000b0 3c 73 74 64 6c 69 62 2e 68 3e 0a 23 69 6e 63 6c |<stdlib.h>.#incl|
000000c0 75 64 65 20 3c 73 74 72 69 6e 67 2e 68 3e 0a 0a |ude <string.h>..|
000000d0 23 69 6e 63 6c 75 64 65 20 22 44 65 73 6b 4c 69 |#include "DeskLi|
000000e0 62 3a 68 2e 45 72 72 6f 72 22 0a 23 69 6e 63 6c |b:h.Error".#incl|
000000f0 75 64 65 20 22 44 65 73 6b 4c 69 62 3a 68 2e 46 |ude "DeskLib:h.F|
00000100 69 6c 65 22 0a 23 69 6e 63 6c 75 64 65 20 22 44 |ile".#include "D|
00000110 65 73 6b 4c 69 62 3a 68 2e 47 66 78 22 0a 23 69 |eskLib:h.Gfx".#i|
00000120 6e 63 6c 75 64 65 20 22 44 65 73 6b 4c 69 62 3a |nclude "DeskLib:|
00000130 68 2e 4b 62 64 22 0a 23 69 6e 63 6c 75 64 65 20 |h.Kbd".#include |
00000140 22 44 65 73 6b 4c 69 62 3a 68 2e 53 57 49 22 0a |"DeskLib:h.SWI".|
00000150 0a 23 69 6e 63 6c 75 64 65 20 22 50 6f 70 63 6f |.#include "Popco|
00000160 72 6e 3a 68 2e 50 6f 70 63 6f 72 6e 22 0a 0a 23 |rn:h.Popcorn"..#|
00000170 64 65 66 69 6e 65 20 72 61 6e 64 6f 6d 28 6e 29 |define random(n)|
00000180 20 28 72 61 6e 64 28 29 20 25 20 28 6e 29 29 0a | (rand() % (n)).|
00000190 0a 73 74 72 75 63 74 20 6f 62 6a 65 63 74 5f 74 |.struct object_t|
000001a0 61 62 6c 65 09 09 20 2a 62 6c 75 65 5f 74 61 62 |able.. *blue_tab|
000001b0 6c 65 2c 20 2a 79 65 6c 6c 6f 77 5f 74 61 62 6c |le, *yellow_tabl|
000001c0 65 3b 0a 0a 2f 2a 20 62 61 6c 6c 5f 68 61 6e 64 |e;../* ball_hand|
000001d0 6c 65 72 20 61 6e 64 20 67 65 6e 65 72 61 74 6f |ler and generato|
000001e0 72 5f 68 61 6e 64 6c 65 72 20 61 72 65 20 74 77 |r_handler are tw|
000001f0 6f 20 74 79 70 69 63 61 6c 20 6f 62 6a 65 63 74 |o typical object|
00000200 20 68 61 6e 64 6c 65 72 73 20 66 6f 72 0a 2a 2a | handlers for.**|
00000210 20 61 20 50 6f 70 63 6f 72 6e 20 6f 62 6a 65 63 | a Popcorn objec|
00000220 74 2e 20 20 54 68 65 79 20 63 6f 6e 74 61 69 6e |t. They contain|
00000230 20 73 65 70 61 72 61 74 65 20 6c 69 74 74 6c 65 | separate little|
00000240 20 69 66 28 29 20 63 6c 61 75 73 65 73 20 74 6f | if() clauses to|
00000250 20 64 65 61 6c 0a 2a 2a 20 77 69 74 68 20 65 61 | deal.** with ea|
00000260 63 68 20 63 6f 6e 64 69 74 69 6f 6e 20 74 68 65 |ch condition the|
00000270 79 20 63 6f 75 6c 64 20 62 65 20 63 61 6c 6c 65 |y could be calle|
00000280 64 20 75 6e 64 65 72 2e 20 20 4f 6e 65 20 6f 72 |d under. One or|
00000290 20 6d 61 6e 79 20 6f 66 20 74 68 65 73 65 0a 2a | many of these.*|
000002a0 2a 20 63 6f 6e 64 69 74 69 6f 6e 73 20 63 6f 75 |* conditions cou|
000002b0 6c 64 20 62 65 20 54 52 55 45 3b 20 61 20 68 61 |ld be TRUE; a ha|
000002c0 6e 64 6c 65 72 20 63 61 6e 20 62 65 20 63 61 6c |ndler can be cal|
000002d0 6c 65 64 20 66 6f 72 20 6d 6f 72 65 20 74 68 61 |led for more tha|
000002e0 6e 20 6f 6e 65 0a 2a 2a 20 72 65 61 73 6f 6e 20 |n one.** reason |
000002f0 61 74 20 61 20 74 69 6d 65 2e 0a 2a 2f 0a 0a 76 |at a time..*/..v|
00000300 6f 69 64 20 62 61 6c 6c 5f 68 61 6e 64 6c 65 72 |oid ball_handler|
00000310 28 73 74 72 75 63 74 20 67 61 6d 65 5f 6f 62 6a |(struct game_obj|
00000320 65 63 74 20 2a 6f 62 6a 2c 20 75 6e 69 6f 6e 20 |ect *obj, union |
00000330 6f 62 6a 65 63 74 5f 66 6c 61 67 73 20 66 6c 61 |object_flags fla|
00000340 67 73 2c 20 76 6f 69 64 20 2a 72 65 66 29 0a 7b |gs, void *ref).{|
00000350 0a 2f 2a 20 44 65 6c 65 74 65 20 62 6f 74 68 20 |./* Delete both |
00000360 62 61 6c 6c 73 20 69 66 20 74 68 65 79 20 63 6f |balls if they co|
00000370 6c 6c 69 64 65 3b 20 69 66 20 74 68 65 20 68 61 |llide; if the ha|
00000380 6e 64 6c 65 72 20 69 73 20 62 65 69 6e 67 20 63 |ndler is being c|
00000390 61 6c 6c 65 64 20 66 6f 72 0a 2a 2a 20 61 20 63 |alled for.** a c|
000003a0 6f 6c 6c 69 73 69 6f 6e 2c 20 27 72 65 66 27 20 |ollision, 'ref' |
000003b0 77 69 6c 6c 20 62 65 20 61 20 70 6f 69 6e 74 65 |will be a pointe|
000003c0 72 20 74 6f 20 74 68 65 20 6f 74 68 65 72 20 6f |r to the other o|
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000003e0 66 6c 61 67 73 2e 62 69 74 73 2e 63 6f 6c 6c 69 |flags.bits.colli|
000003f0 64 65 29 0a 20 20 7b 0a 20 20 20 20 50 6f 70 63 |de). {. Popc|
00000400 6f 72 6e 5f 44 65 6c 65 74 65 4f 62 6a 65 63 74 |orn_DeleteObject|
00000410 28 6f 62 6a 29 3b 0a 20 20 20 20 50 6f 70 63 6f |(obj);. Popco|
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00000450 72 65 74 75 72 6e 3b 0a 20 20 7d 0a 0a 20 20 69 |return;. }.. i|
00000460 66 20 28 66 6c 61 67 73 2e 62 69 74 73 2e 61 74 |f (flags.bits.at|
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00000480 2e 65 2e 20 69 66 20 62 61 6c 6c 20 69 73 20 6f |.e. if ball is o|
00000490 66 66 20 74 68 65 20 73 63 72 65 65 6e 20 2a 2f |ff the screen */|
000004a0 0a 20 20 7b 0a 20 20 20 20 69 66 20 28 6f 62 6a |. {. if (obj|
000004b0 2d 3e 78 20 3c 20 30 20 7c 7c 20 6f 62 6a 2d 3e |->x < 0 || obj->|
000004c0 78 20 3e 20 33 31 39 3c 3c 31 32 29 20 2f 2a 20 |x > 319<<12) /* |
000004d0 42 6f 75 6e 63 65 20 78 20 76 65 6c 6f 63 69 74 |Bounce x velocit|
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000004f0 78 76 20 3d 20 2d 6f 62 6a 2d 3e 78 76 3b 0a 20 |xv = -obj->xv;. |
00000500 20 20 20 69 66 20 28 6f 62 6a 2d 3e 79 20 3c 20 | if (obj->y < |
00000510 30 20 7c 7c 20 6f 62 6a 2d 3e 79 20 3e 20 32 35 |0 || obj->y > 25|
00000520 35 3c 3c 31 32 29 20 2f 2a 20 42 6f 75 6e 63 65 |5<<12) /* Bounce|
00000530 20 79 20 76 65 6c 6f 63 69 74 79 20 2a 2f 0a 20 | y velocity */. |
00000540 20 20 20 7b 0a 20 20 20 20 20 20 6f 62 6a 2d 3e | {. obj->|
00000550 79 76 20 3d 20 2d 6f 62 6a 2d 3e 79 76 3b 0a 2f |yv = -obj->yv;./|
00000560 2a 0a 2a 2a 20 54 68 69 73 20 6e 65 78 74 20 6c |*.** This next l|
00000570 69 6e 65 20 69 73 20 6e 65 65 64 65 64 20 74 6f |ine is needed to|
00000580 20 73 74 6f 70 20 6a 69 74 74 65 72 69 6e 67 20 | stop jittering |
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00000610 68 69 73 20 6c 69 6e 65 20 61 6e 64 20 73 65 65 |his line and see|
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00000660 0a 0a 2f 2a 20 54 68 69 73 20 66 75 6e 63 74 69 |../* This functi|
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00000700 0a 7b 0a 20 20 73 74 72 75 63 74 20 67 61 6d 65 |.{. struct game|
00000710 5f 6f 62 6a 65 63 74 20 20 20 20 20 2a 62 61 6c |_object *bal|
00000720 6c 3b 0a 0a 20 20 69 66 20 28 20 28 72 61 6e 64 |l;.. if ( (rand|
00000730 28 29 20 26 20 33 29 20 3d 3d 20 30 20 29 20 2f |() & 3) == 0 ) /|
00000740 2a 20 54 68 69 73 20 6d 61 6b 65 73 20 74 68 65 |* This makes the|
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00000760 72 61 74 69 63 20 2a 2f 0a 20 20 20 20 72 65 74 |ratic */. ret|
00000770 75 72 6e 3b 0a 0a 20 20 62 61 6c 6c 20 3d 20 50 |urn;.. ball = P|
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00000810 0a 20 20 62 61 6c 6c 2d 3e 78 76 20 3d 20 6f 62 |. ball->xv = ob|
00000820 6a 2d 3e 78 76 20 2b 20 28 72 61 6e 64 6f 6d 28 |j->xv + (random(|
00000830 34 30 39 36 29 2d 32 30 34 38 29 3b 0a 20 20 62 |4096)-2048);. b|
00000840 61 6c 6c 2d 3e 79 76 20 3d 20 6f 62 6a 2d 3e 79 |all->yv = obj->y|
00000850 76 20 2b 20 28 72 61 6e 64 6f 6d 28 34 30 39 36 |v + (random(4096|
00000860 29 2d 32 30 34 38 29 3b 0a 7d 0a 0a 69 6e 74 20 |)-2048);.}..int |
00000870 6d 61 69 6e 28 76 6f 69 64 29 0a 7b 0a 20 20 69 |main(void).{. i|
00000880 6e 74 20 20 20 20 20 20 20 20 20 20 20 20 20 20 |nt |
00000890 20 20 20 20 20 66 72 61 6d 65 73 20 3d 20 31 2c | frames = 1,|
000008a0 20 73 74 61 72 74 5f 74 69 6d 65 2c 20 65 6e 64 | start_time, end|
000008b0 5f 74 69 6d 65 3b 0a 20 20 73 74 72 75 63 74 20 |_time;. struct |
000008c0 67 61 6d 65 5f 6f 62 6a 65 63 74 20 20 20 20 2a |game_object *|
000008d0 74 65 6d 70 5f 6f 62 6a 3b 0a 0a 2f 2a 20 53 65 |temp_obj;../* Se|
000008e0 74 20 75 70 20 74 68 65 20 61 64 64 72 65 73 73 |t up the address|
000008f0 20 6f 66 20 74 68 65 20 73 79 6d 62 6f 6c 20 74 | of the symbol t|
00000900 61 62 6c 65 2c 20 6c 6f 61 64 20 74 68 65 20 72 |able, load the r|
00000910 65 73 6f 75 72 63 65 73 2c 20 70 72 6f 74 6f 74 |esources, protot|
00000920 79 70 65 73 0a 2a 2a 20 61 6e 64 20 74 68 65 20 |ypes.** and the |
00000930 73 70 72 69 74 65 73 2e 0a 2a 2f 0a 0a 20 20 73 |sprites..*/.. s|
00000940 74 72 63 70 79 28 73 79 6d 62 6f 6c 5f 74 61 62 |trcpy(symbol_tab|
00000950 6c 65 5f 66 69 6c 65 6e 61 6d 65 2c 20 22 3c 47 |le_filename, "<G|
00000960 75 73 68 24 44 69 72 3e 2e 44 61 74 61 2e 53 79 |ush$Dir>.Data.Sy|
00000970 6d 62 6f 6c 73 22 29 3b 0a 20 20 45 72 72 6f 72 |mbols");. Error|
00000980 5f 43 68 65 63 6b 46 61 74 61 6c 28 50 6f 70 63 |_CheckFatal(Popc|
00000990 6f 72 6e 5f 4c 6f 61 64 52 65 73 6f 75 72 63 65 |orn_LoadResource|
000009a0 46 69 6c 65 28 22 3c 47 75 73 68 24 44 69 72 3e |File("<Gush$Dir>|
000009b0 2e 44 61 74 61 2e 52 65 73 6f 75 72 63 65 73 22 |.Data.Resources"|
000009c0 29 29 3b 0a 20 20 45 72 72 6f 72 5f 43 68 65 63 |));. Error_Chec|
000009d0 6b 46 61 74 61 6c 28 50 6f 70 63 6f 72 6e 5f 4c |kFatal(Popcorn_L|
000009e0 6f 61 64 50 72 6f 74 6f 74 79 70 65 73 28 22 3c |oadPrototypes("<|
000009f0 47 75 73 68 24 44 69 72 3e 2e 44 61 74 61 2e 50 |Gush$Dir>.Data.P|
00000a00 72 6f 74 6f 74 79 70 65 73 22 29 29 3b 0a 20 20 |rototypes"));. |
00000a10 45 72 72 6f 72 5f 43 68 65 63 6b 46 61 74 61 6c |Error_CheckFatal|
00000a20 28 50 6f 70 63 6f 72 6e 5f 4c 6f 61 64 47 72 6f |(Popcorn_LoadGro|
00000a30 75 70 28 27 4c 4c 41 42 27 29 29 3b 0a 0a 2f 2a |up('LLAB'));../*|
00000a40 20 49 6e 69 74 69 61 6c 69 73 65 20 50 6f 70 63 | Initialise Popc|
00000a50 6f 72 6e 20 73 70 72 69 74 65 20 70 6c 6f 74 74 |orn sprite plott|
00000a60 65 72 2c 20 63 6c 65 61 72 20 73 63 72 65 65 6e |er, clear screen|
00000a70 2c 20 61 6e 64 20 6d 61 6b 65 20 73 70 61 63 65 |, and make space|
00000a80 20 66 6f 72 0a 2a 2a 20 74 77 6f 20 74 61 62 6c | for.** two tabl|
00000a90 65 73 2c 20 6f 6e 65 20 66 6f 72 20 62 6c 75 65 |es, one for blue|
00000aa0 20 62 61 6c 6c 73 2c 20 6f 6e 65 20 66 6f 72 20 | balls, one for |
00000ab0 79 65 6c 6c 6f 77 2e 20 20 54 68 65 6e 20 73 65 |yellow. Then se|
00000ac0 74 20 74 68 65 20 67 72 61 76 69 74 79 0a 2a 2a |t the gravity.**|
00000ad0 20 6f 6e 20 65 61 63 68 20 74 6f 20 61 20 6d 6f | on each to a mo|
00000ae0 64 65 72 61 74 65 20 76 61 6c 75 65 20 28 72 65 |derate value (re|
00000af0 6d 65 6d 62 65 72 20 34 30 39 36 20 50 6f 70 63 |member 4096 Popc|
00000b00 6f 72 6e 20 75 6e 69 74 73 20 3d 20 31 20 70 69 |orn units = 1 pi|
00000b10 78 65 6c 29 0a 2a 2f 0a 0a 20 20 62 6c 75 65 5f |xel).*/.. blue_|
00000b20 74 61 62 6c 65 20 20 20 20 20 20 3d 20 50 6f 70 |table = Pop|
00000b30 63 6f 72 6e 5f 4e 65 77 54 61 62 6c 65 28 32 30 |corn_NewTable(20|
00000b40 30 2c 20 54 52 55 45 29 3b 0a 20 20 79 65 6c 6c |0, TRUE);. yell|
00000b50 6f 77 5f 74 61 62 6c 65 20 20 20 20 3d 20 50 6f |ow_table = Po|
00000b60 70 63 6f 72 6e 5f 4e 65 77 54 61 62 6c 65 28 32 |pcorn_NewTable(2|
00000b70 30 30 2c 20 54 52 55 45 29 3b 0a 20 20 62 6c 75 |00, TRUE);. blu|
00000b80 65 5f 74 61 62 6c 65 2d 3e 67 72 61 76 5f 79 20 |e_table->grav_y |
00000b90 3d 20 79 65 6c 6c 6f 77 5f 74 61 62 6c 65 2d 3e |= yellow_table->|
00000ba0 67 72 61 76 5f 79 20 3d 20 32 35 36 3b 0a 0a 2f |grav_y = 256;../|
00000bb0 2a 20 43 68 61 6e 67 65 20 74 6f 20 6d 6f 64 65 |* Change to mode|
00000bc0 20 31 33 20 77 69 74 68 20 73 70 61 63 65 20 66 | 13 with space f|
00000bd0 6f 72 20 74 77 6f 20 73 63 72 65 65 6e 20 62 61 |or two screen ba|
00000be0 6e 6b 73 20 28 4f 53 5f 42 79 74 65 20 31 31 34 |nks (OS_Byte 114|
00000bf0 2c 30 29 20 2a 2f 0a 0a 20 20 53 57 49 28 32 2c |,0) */.. SWI(2,|
00000c00 20 30 2c 20 53 57 49 5f 4f 53 5f 42 79 74 65 2c | 0, SWI_OS_Byte,|
00000c10 20 31 31 34 2c 20 30 29 3b 0a 20 20 47 46 58 5f | 114, 0);. GFX_|
00000c20 4d 6f 64 65 28 31 33 29 3b 0a 20 20 53 57 49 28 |Mode(13);. SWI(|
00000c30 30 2c 20 30 2c 20 53 57 49 5f 4f 53 5f 52 65 6d |0, 0, SWI_OS_Rem|
00000c40 6f 76 65 43 75 72 73 6f 72 73 29 3b 0a 20 20 53 |oveCursors);. S|
00000c50 57 49 28 32 2c 20 30 2c 20 53 57 49 5f 4f 53 5f |WI(2, 0, SWI_OS_|
00000c60 42 79 74 65 2c 20 32 32 39 2c 20 31 29 3b 0a 0a |Byte, 229, 1);..|
00000c70 20 20 50 6f 70 63 6f 72 6e 5f 52 65 61 64 53 63 | Popcorn_ReadSc|
00000c80 72 65 65 6e 44 65 74 61 69 6c 73 28 29 3b 0a 20 |reenDetails();. |
00000c90 20 50 6f 70 63 6f 72 6e 5f 43 6c 65 61 72 53 63 | Popcorn_ClearSc|
00000ca0 72 65 65 6e 28 30 29 3b 0a 0a 2f 2a 20 47 65 6e |reen(0);../* Gen|
00000cb0 65 72 61 74 6f 72 20 6f 62 6a 65 63 74 73 20 61 |erator objects a|
00000cc0 72 65 20 6e 6f 77 20 63 72 65 61 74 65 64 20 66 |re now created f|
00000cd0 72 6f 6d 20 70 72 6f 74 6f 74 79 70 65 20 66 69 |rom prototype fi|
00000ce0 6c 65 2e 2e 2e 20 65 61 73 79 20 70 65 61 73 79 |le... easy peasy|
00000cf0 20 3a 2d 29 0a 2a 2a 20 54 68 69 73 20 74 69 6d | :-).** This tim|
00000d00 65 20 74 68 65 69 72 20 49 44 73 20 61 72 65 20 |e their IDs are |
00000d10 63 68 61 6e 67 65 64 20 73 6f 20 74 68 61 74 20 |changed so that |
00000d20 62 61 6c 6c 73 20 63 61 6e 20 62 65 20 63 72 65 |balls can be cre|
00000d30 61 74 65 64 20 66 72 6f 6d 0a 2a 2a 20 74 68 65 |ated from.** the|
00000d40 6d 20 6d 6f 72 65 20 65 61 73 69 6c 79 20 28 73 |m more easily (s|
00000d50 65 65 20 67 65 6e 65 72 61 74 6f 72 5f 68 61 6e |ee generator_han|
00000d60 64 6c 65 72 20 61 62 6f 76 65 29 2e 0a 2a 2f 0a |dler above)..*/.|
00000d70 0a 20 20 74 65 6d 70 5f 6f 62 6a 20 3d 20 50 6f |. temp_obj = Po|
00000d80 70 63 6f 72 6e 5f 4e 65 77 50 72 6f 74 6f 74 79 |pcorn_NewPrototy|
00000d90 70 65 28 62 6c 75 65 5f 74 61 62 6c 65 2c 20 27 |pe(blue_table, '|
00000da0 52 4e 45 47 27 2c 20 31 30 3c 3c 31 32 2c 20 31 |RNEG', 10<<12, 1|
00000db0 30 3c 3c 31 32 29 3b 0a 20 20 74 65 6d 70 5f 6f |0<<12);. temp_o|
00000dc0 62 6a 2d 3e 6f 62 6a 65 63 74 5f 69 64 20 3d 20 |bj->object_id = |
00000dd0 27 45 55 4c 42 27 3b 0a 20 20 74 65 6d 70 5f 6f |'EULB';. temp_o|
00000de0 62 6a 2d 3e 78 76 20 3d 20 74 65 6d 70 5f 6f 62 |bj->xv = temp_ob|
00000df0 6a 2d 3e 79 76 20 3d 20 34 30 39 36 3b 0a 20 20 |j->yv = 4096;. |
00000e00 74 65 6d 70 5f 6f 62 6a 2d 3e 75 73 65 72 5f 64 |temp_obj->user_d|
00000e10 61 74 61 20 3d 20 62 6c 75 65 5f 74 61 62 6c 65 |ata = blue_table|
00000e20 3b 0a 0a 20 20 74 65 6d 70 5f 6f 62 6a 20 3d 20 |;.. temp_obj = |
00000e30 50 6f 70 63 6f 72 6e 5f 4e 65 77 50 72 6f 74 6f |Popcorn_NewProto|
00000e40 74 79 70 65 28 79 65 6c 6c 6f 77 5f 74 61 62 6c |type(yellow_tabl|
00000e50 65 2c 20 27 52 4e 45 47 27 2c 20 33 30 39 3c 3c |e, 'RNEG', 309<<|
00000e60 31 32 2c 20 31 30 3c 3c 31 32 29 3b 0a 20 20 74 |12, 10<<12);. t|
00000e70 65 6d 70 5f 6f 62 6a 2d 3e 6f 62 6a 65 63 74 5f |emp_obj->object_|
00000e80 69 64 20 3d 20 27 4f 4c 45 59 27 3b 0a 20 20 74 |id = 'OLEY';. t|
00000e90 65 6d 70 5f 6f 62 6a 2d 3e 78 76 20 3d 20 2d 34 |emp_obj->xv = -4|
00000ea0 30 39 36 3b 20 74 65 6d 70 5f 6f 62 6a 2d 3e 79 |096; temp_obj->y|
00000eb0 76 20 3d 20 34 30 39 36 3b 0a 20 20 74 65 6d 70 |v = 4096;. temp|
00000ec0 5f 6f 62 6a 2d 3e 75 73 65 72 5f 64 61 74 61 20 |_obj->user_data |
00000ed0 3d 20 79 65 6c 6c 6f 77 5f 74 61 62 6c 65 3b 0a |= yellow_table;.|
00000ee0 0a 2f 2a 20 4d 61 69 6e 20 6c 6f 6f 70 20 69 73 |./* Main loop is|
00000ef0 20 75 6e 63 68 61 6e 67 65 64 20 2a 2f 0a 0a 20 | unchanged */.. |
00000f00 20 64 6f 20 7b 0a 20 20 20 20 53 57 49 28 30 2c | do {. SWI(0,|
00000f10 20 31 2c 20 53 57 49 5f 4f 53 5f 52 65 61 64 4d | 1, SWI_OS_ReadM|
00000f20 6f 6e 6f 74 6f 6e 69 63 54 69 6d 65 2c 20 26 73 |onotonicTime, &s|
00000f30 74 61 72 74 5f 74 69 6d 65 29 3b 0a 20 20 20 20 |tart_time);. |
00000f40 50 6f 70 63 6f 72 6e 5f 43 6c 65 61 72 53 63 72 |Popcorn_ClearScr|
00000f50 65 65 6e 28 30 29 3b 0a 20 20 20 20 50 6f 70 63 |een(0);. Popc|
00000f60 6f 72 6e 5f 50 72 6f 63 65 73 73 28 62 6c 75 65 |orn_Process(blue|
00000f70 5f 74 61 62 6c 65 2c 20 54 52 55 45 2c 20 66 72 |_table, TRUE, fr|
00000f80 61 6d 65 73 29 3b 0a 20 20 20 20 50 6f 70 63 6f |ames);. Popco|
00000f90 72 6e 5f 50 72 6f 63 65 73 73 28 79 65 6c 6c 6f |rn_Process(yello|
00000fa0 77 5f 74 61 62 6c 65 2c 20 54 52 55 45 2c 20 66 |w_table, TRUE, f|
00000fb0 72 61 6d 65 73 29 3b 0a 20 20 20 20 50 6f 70 63 |rames);. Popc|
00000fc0 6f 72 6e 5f 43 6f 6c 6c 69 73 69 6f 6e 43 68 65 |orn_CollisionChe|
00000fd0 63 6b 28 62 6c 75 65 5f 74 61 62 6c 65 2c 20 79 |ck(blue_table, y|
00000fe0 65 6c 6c 6f 77 5f 74 61 62 6c 65 29 3b 0a 20 20 |ellow_table);. |
00000ff0 20 20 64 6f 20 7b 0a 20 20 20 20 20 20 53 57 49 | do {. SWI|
00001000 28 30 2c 20 31 2c 20 53 57 49 5f 4f 53 5f 52 65 |(0, 1, SWI_OS_Re|
00001010 61 64 4d 6f 6e 6f 74 6f 6e 69 63 54 69 6d 65 2c |adMonotonicTime,|
00001020 20 26 65 6e 64 5f 74 69 6d 65 29 3b 0a 20 20 20 | &end_time);. |
00001030 20 20 20 66 72 61 6d 65 73 20 3d 20 28 65 6e 64 | frames = (end|
00001040 5f 74 69 6d 65 20 2d 20 73 74 61 72 74 5f 74 69 |_time - start_ti|
00001050 6d 65 29 20 3e 3e 20 31 3b 0a 20 20 20 20 7d 20 |me) >> 1;. } |
00001060 77 68 69 6c 65 20 28 66 72 61 6d 65 73 20 3d 3d |while (frames ==|
00001070 20 30 29 3b 0a 20 20 20 20 53 57 49 28 31 2c 20 | 0);. SWI(1, |
00001080 30 2c 20 53 57 49 5f 4f 53 5f 42 79 74 65 2c 20 |0, SWI_OS_Byte, |
00001090 31 39 29 3b 0a 20 20 20 20 50 6f 70 63 6f 72 6e |19);. Popcorn|
000010a0 5f 53 77 61 70 42 61 6e 6b 73 28 29 3b 0a 20 20 |_SwapBanks();. |
000010b0 7d 20 77 68 69 6c 65 20 28 21 28 4b 62 64 5f 4b |} while (!(Kbd_K|
000010c0 65 79 44 6f 77 6e 28 2d 31 31 33 29 20 26 26 20 |eyDown(-113) && |
000010d0 4b 62 64 5f 4b 65 79 44 6f 77 6e 28 2d 32 29 29 |Kbd_KeyDown(-2))|
000010e0 29 3b 0a 0a 20 20 72 65 74 75 72 6e 28 30 29 3b |);.. return(0);|
000010f0 0a 7d 0a |.}.|
000010f3 
.