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- /* Copyright (c) 1990 Commodore-Amiga, Inc.
- *
- * This example is provided in electronic form by Commodore-Amiga, Inc. for
- * use with the 1.3 revisions of the Addison-Wesley Amiga reference manuals.
- * The 1.3 Addison-Wesley Amiga Reference Manual series contains additional
- * information on the correct usage of the techniques and operating system
- * functions presented in this example. The source and executable code of
- * this example may only be distributed in free electronic form, via bulletin
- * board or as part of a fully non-commercial and freely redistributable
- * diskette. Both the source and executable code (including comments) must
- * be included, without modification, in any copy. This example may not be
- * published in printed form or distributed with any commercial product.
- * However, the programming techniques and support routines set forth in
- * this example may be used in the development of original executable
- * software products for Commodore Amiga computers.
- * All other rights reserved.
- * This example is provided "as-is" and is subject to change; no warranties
- * are made. All use is at your own risk. No liability or responsibility
- * is assumed.
- */
-
- /* vsprite.c 19oct89 CATS
- **
- ** lattice c 5.04
- ** lc -b1 -cfist -v -y vsprite.c
- ** blink FROM LIB:c.o vsprite.o /animtools/animtools.o LIB LIB:lc.lib TO vsprite
- */
- #include <exec/types.h>
- #include <intuition/intuition.h>
- #include <graphics/gels.h>
- #include <graphics/collide.h>
- #include <exec/memory.h>
- #include <libraries/dos.h>
-
- #include <proto/all.h>
- #include <stdlib.h>
-
- #include "/animtools/animtools.h"
- #include "/animtools/animtools_proto.h"
-
- VOID borderCheck(struct VSprite *hitVSprite, LONG borderflags);
- VOID process_window(struct Window *win, struct VSprite *MyVSprite);
- VOID do_VSprite(struct Window *win);
- VOID vspriteDrawGList(struct Window *win);
-
- struct GfxBase *GfxBase; /* pointer to Graphics library */
- struct IntuitionBase *IntuitionBase; /* pointer to Intuition library */
-
- int return_code;
-
- /* number of lines in the vsprite */
- #define GEL_SIZE 4
-
- /* vsprite data - there are two sets that are alternated between.
- ** note that this data is always displayed as low resolution.
- */
- WORD chip vsprite_data1[2 * GEL_SIZE] =
- { 0x7ffe, 0x80ff, 0x7c3e, 0x803f, 0x7c3e, 0x803f, 0x7ffe, 0x80ff, };
-
- WORD chip vsprite_data2[2 * GEL_SIZE] =
- { 0x7ffe, 0xff01, 0x7c3e, 0xfc01, 0x7c3e, 0xfc01, 0x7ffe, 0xff01, };
-
- WORD mySpriteAltColors[] =
- { 0x000f, 0x0f00, 0x0ff0 };
-
- WORD mySpriteColors[] =
- { 0x0000, 0x00f0, 0x0f00 };
-
- /* information for the new vsprite */
- NEWVSPRITE myNewVSprite =
- {
- vsprite_data2, /* image data */
- mySpriteColors, /* sprite color array */
- 1, /* word width (must be 1 for true vsprite) */
- GEL_SIZE, /* line height */
- 2, /* image depth (must be 2 for true vsprite) */
- 160, 100, /* x, y position */
- VSPRITE, /* flags (VSPRITE == true vsprite) */
- 1 << BORDERHIT, /* hit mask */
- 0, /* me mask */
- };
-
- /* information for the new window */
- struct NewWindow myNewWindow =
- {
- 80, 20, 400, 150, -1, -1, CLOSEWINDOW | INTUITICKS,
- ACTIVATE | WINDOWCLOSE | WINDOWDEPTH | RMBTRAP,
- NULL, NULL, "VSprite", NULL, NULL, 0, 0, 0, 0, WBENCHSCREEN
- };
-
- /*-------------------------------------------------------------
- **
- */
- VOID vspriteDrawGList(struct Window *win)
- {
- SortGList(win->RPort);
- DrawGList(win->RPort, ViewPortAddress(win));
- /* These calls are not intuition compatible...
- ** MrgCop(view);
- ** LoadView(view);
- ** use RethinkDisplay() in intuition environment.
- */
- RethinkDisplay();
- /* WaitTOF(); done by RethinkDisplay */
- }
-
- /*-------------------------------------------------------------
- ** collision routine for vsprite hitting border.
- ** note that when the collision is vsprite to vsprite (or bob
- ** to bob, bob to animOb, etc), then the parameters are both
- ** pointers to a vsprite:
- **
- ** VOID collCheck(struct VSprite *vsp1,struct VSprite *vsp2)
- */
- VOID borderCheck(struct VSprite *hitVSprite, LONG borderflags)
- {
- if (borderflags & RIGHTHIT)
- {
- hitVSprite->SprColors = mySpriteAltColors;
- hitVSprite->VUserExt = -40;
- }
- if (borderflags & LEFTHIT)
- {
- hitVSprite->SprColors = mySpriteColors;
- hitVSprite->VUserExt = 20;
- }
- }
-
- /*-------------------------------------------------------------
- ** process window and dynamically change vsprite:
- ** - get messages.
- ** - go away on CLOSEWINDOW.
- ** - update and redisplay vsprite on INTUITICKS.
- ** - wait for more messages.
- */
- VOID process_window(struct Window *win, struct VSprite *myVSprite)
- {
- struct IntuiMessage *msg;
-
- FOREVER
- {
- Wait(1L << win->UserPort->mp_SigBit);
-
- while (NULL != (msg = (struct IntuiMessage *)GetMsg(win->UserPort)))
- {
- /* only CLOSEWINDOW and INTUITICKS are active */
- if (msg->Class == CLOSEWINDOW)
- {
- ReplyMsg((struct Message *)msg);
- return;
- }
-
- /* must be an INTUITICKS: change x and y values on the fly.
- ** note offset by window left and top edge--sprite relative
- ** to the screen, not window.
- */
- myVSprite->X = win->LeftEdge + msg->MouseX + myVSprite->VUserExt;
- myVSprite->Y = win->TopEdge + msg->MouseY + 1;
- ReplyMsg((struct Message *)msg);
- }
-
- /* got a message, change image data on the fly */
- myVSprite->ImageData = (myVSprite->ImageData == vsprite_data1) ?
- vsprite_data2 : vsprite_data1;
-
- SortGList(win->RPort);
- DoCollision(win->RPort);
- vspriteDrawGList(win);
- }
- }
-
- /*-------------------------------------------------------------
- ** working with the vsprite:
- ** - setup the gel system, and get a new vsprite (makeVSprite()).
- ** - add the vsprite to the system and display.
- ** - use the vsprite.
- ** - when done, remove vsprite and update the display without the vsprite.
- ** - cleanup everything.
- */
- VOID do_VSprite(struct Window *win)
- {
- struct VSprite *myVSprite;
- struct GelsInfo *my_ginfo;
-
- if (NULL == (my_ginfo = setupGelSys(win->RPort, 0xfc)))
- return_code = RETURN_WARN;
- else
- {
- if (NULL == (myVSprite = makeVSprite(&myNewVSprite)))
- return_code = RETURN_WARN;
- else
- {
- AddVSprite(myVSprite, win->RPort);
- vspriteDrawGList(win);
-
- myVSprite->VUserExt = 20;
- SetCollision(BORDERHIT, borderCheck, win->RPort->GelsInfo);
-
- process_window(win, myVSprite);
-
- RemVSprite(myVSprite);
- freeVSprite(myVSprite);
- }
- vspriteDrawGList(win);
- cleanupGelSys(my_ginfo,win->RPort);
- }
- }
-
- /*-------------------------------------------------------------
- ** example vsprite program:
- ** - first open up the libraries and a window.
- */
- VOID main(int argc, char **argv)
- {
- struct Window *win;
-
- return_code = RETURN_OK;
-
- if (NULL == (GfxBase = (struct GfxBase *)OpenLibrary("graphics.library",33L)))
- return_code = RETURN_FAIL;
- else
- {
- if (NULL == (IntuitionBase =
- (struct IntuitionBase *)OpenLibrary("intuition.library",33L)))
- return_code = RETURN_FAIL;
- else
- {
- if (NULL == (win = OpenWindow(&myNewWindow)))
- return_code = RETURN_WARN;
- else
- {
- do_VSprite(win);
-
- CloseWindow(win);
- }
- CloseLibrary(IntuitionBase);
- }
- CloseLibrary(GfxBase);
- }
- exit(return_code);
- }
-