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https://github.com/RevCurtisP/C02.git
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78 lines
2.2 KiB
Plaintext
78 lines
2.2 KiB
Plaintext
/*********************************
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* SPRDEMO - Vera Sprite Demo *
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*********************************/
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//Specify System Header using -H option
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#include <stddef.h02>
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#include <stdlib.h02>
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#include <intlib.h02>
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#include <stdio.h02>
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#include <stdiox.h02>
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#include <memory.h02>
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#include <nybble.h02>
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#include "include/veramem.h02" //Vera Memory Access
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#include "include/veraspr.h02" //Vera Sprites
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char spindx; //Sprite Index
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int spaddr; //Sprite Address
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char spxlo,spxhi; //Sprite X-Coordinate
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char spylo,spyhi; //Sprite Y-Coordinate
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struct spregs spctrl; //Sprite Control Registers
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struct sprite spattr; //Sprite Attributes
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const char happy =
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{0,0,7,7,7,7,0,0,
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0,7,7,7,7,7,7,0,
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7,7,0,7,7,0,7,7,
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7,7,7,7,7,7,7,7,
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7,7,7,7,7,7,7,7,
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7,0,7,7,7,7,0,7,
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0,7,0,0,0,0,7,7,
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0,0,7,7,7,7,0,0};
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/*Print Sprite Control Registers*/
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void prtspk() {
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printf(spctrl.ctrl, "CTRL=%b, ");
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printf(spctrl.clsn, "CLSN=%b%n");
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}
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/*Print Sprite Attributes */
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void prtspr() {
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printf(setdst(spattr.addr),"ADR=$%w, ");
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printf(setdst(spattr.horz),"HRZ=%i, ");
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printf(setdst(spattr.vert),"VRT=%i, ");
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printf(spattr.ctrl,"CTL=$%h, ");
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printf(spattr.size,"SIZ=$%h%n");
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}
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main:
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spxlo=0; spxhi=0; spylo=0; spyhi=0;
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for (spindx=0; spindx<#MAXSPR; spindx++) {
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spaddr=&$800;
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setspa(spaddr); //Set Vera Address to Sprite Address
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setmem(@happy,&happy); //Write Sprite Data to Vera
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setspd(spindx,spaddr); //Set Sprite Address
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setspb(spindx,1); //Set Mode to 8 Bits per Pixel
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setspx(spindx,spxhi,spxlo); //Set Sprite X-Coordinate
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setspy(spindx,spyhi,spylo); //Set Sprite Y-Coordinate
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setspz(spindx,3); //Display in Front of Layer 1
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setspe(#TRUE); //Enable Sprites
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spxlo=spxlo+16; if (!spxlo) spylo=spylo+16;
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}
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getspk(&spctrl); //Read Sprite Control Registers
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puts("SPRITES: ");
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prtspk(); //Print Sprite Control Registers
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getspr(spindx,&spattr); //Read Sprite Attributes
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printf(spindx,"SPRITE %d ");
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prtspr(); //Print Sprite Attributes
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goto exit;
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