139 lines
5.3 KiB
C
139 lines
5.3 KiB
C
// hello_pad example
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//
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// We're using libetc PadInit() and PadRead() that only supports the 16 buttons pad
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// but doesn't need the libpad lib. It's fine for prototyping and simple stuff.
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// Schnappy 2021
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#include <sys/types.h>
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#include <stdio.h>
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#include <libgte.h>
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#include <libetc.h>
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#include <libgpu.h>
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#define VMODE 0 // Video Mode : 0 : NTSC, 1: PAL
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#define SCREENXRES 320
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#define SCREENYRES 240
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#define CENTERX SCREENXRES/2
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#define CENTERY SCREENYRES/2
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#define MARGINX 32 // margins for text display
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#define MARGINY 32
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#define FONTSIZE 8 * 2 // Text Field Height
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#define OTLEN 8 // Ordering Table Length
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DISPENV disp[2]; // Double buffered DISPENV and DRAWENV
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DRAWENV draw[2];
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u_long ot[2][OTLEN]; // double ordering table of length 8 * 32 = 256 bits / 32 bytes
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char primbuff[2][32768]; // double primitive buffer of length 32768 * 8 = 262.144 bits / 32,768 Kbytes
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char *nextpri = primbuff[0]; // pointer to the next primitive in primbuff. Initially, points to the first bit of primbuff[0]
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short db = 0; // index of which buffer is used, values 0, 1
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void init(void)
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{
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ResetGraph(0);
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SetDefDispEnv(&disp[0], 0, 0, SCREENXRES, SCREENYRES);
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SetDefDispEnv(&disp[1], 0, SCREENYRES, SCREENXRES, SCREENYRES);
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SetDefDrawEnv(&draw[0], 0, SCREENYRES, SCREENXRES, SCREENYRES);
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SetDefDrawEnv(&draw[1], 0, 0, SCREENXRES, SCREENYRES);
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if (VMODE)
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{
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SetVideoMode(MODE_PAL);
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disp[0].screen.y += 8;
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disp[1].screen.y += 8;
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}
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SetDispMask(1); // Display on screen
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setRGB0(&draw[0], 50, 50, 50);
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setRGB0(&draw[1], 50, 50, 50);
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draw[0].isbg = 1;
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draw[1].isbg = 1;
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PutDispEnv(&disp[db]);
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PutDrawEnv(&draw[db]);
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FntLoad(960, 0);
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FntOpen(MARGINX, SCREENYRES - MARGINY - FONTSIZE, SCREENXRES - MARGINX * 2, FONTSIZE, 0, 280 );
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}
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void display(void)
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{
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DrawSync(0);
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VSync(0);
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PutDispEnv(&disp[db]);
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PutDrawEnv(&draw[db]);
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DrawOTag(&ot[db][OTLEN - 1]);
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db = !db;
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nextpri = primbuff[db];
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}
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int main(void)
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{
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TILE * PADL; // Tile primitives
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TILE * TRIGGERL;
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TILE * PADR;
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TILE * TRIGGERR;
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TILE * START, * SELECT;
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int pad = 0;
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init();
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PadInit(0); // Initialize pad. Mode is always 0
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while (1)
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{
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ClearOTagR(ot[db], OTLEN);
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// D-cross
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PADL = (TILE *)nextpri;
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setTile(PADL);
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setRGB0(PADL, 0, 0, 255);
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setXY0(PADL, CENTERX - 80, CENTERY);
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setWH(PADL, 24, 24);
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addPrim(ot[db], PADL);
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nextpri += sizeof(TILE);
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// L1+L2
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TRIGGERL = (TILE *)nextpri;
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setTile(TRIGGERL);
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setRGB0(TRIGGERL, 255, 0, 0);
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setXY0(TRIGGERL, CENTERX - 80, CENTERY - 80);
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setWH(TRIGGERL, 24, 24);
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addPrim(ot[db], TRIGGERL);
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nextpri += sizeof(TILE);
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// /\, X, O, []
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PADR = (TILE *)nextpri;
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setTile(PADR);
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setRGB0(PADR, 0, 255, 0);
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setXY0(PADR, CENTERX + 50, CENTERY);
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setWH(PADR, 24, 24);
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addPrim(ot[db], PADR);
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nextpri += sizeof(TILE);
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// R1+R2
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TRIGGERR = (TILE *)nextpri;
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setTile(TRIGGERR);
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setRGB0(TRIGGERR, 255, 0, 255);
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setXY0(TRIGGERR, CENTERX + 50, CENTERY -80);
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setWH(TRIGGERR, 24, 24);
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addPrim(ot[db], TRIGGERR);
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nextpri += sizeof(TILE);
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// START + SELECT
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START = (TILE *)nextpri;
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setTile(START);
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setRGB0(START, 240, 240, 240);
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setXY0(START, CENTERX - 16, CENTERY - 36);
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setWH(START, 24, 24);
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addPrim(ot[db], START);
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nextpri += sizeof(TILE);
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// Pad stuff
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pad = PadRead(0); // Read pads input. id is unused, always 0.
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// PadRead() returns a 32 bit value, where input from pad 1 is stored in the low 2 bytes and input from pad 2 is stored in the high 2 bytes. (https://matiaslavik.wordpress.com/2015/02/13/diving-into-psx-development/)
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// D-pad
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if(pad & PADLup) {PADL->y0 = CENTERY - 16;} // 🡩 // To access pad 2, use ( pad >> 16 & PADLup)...
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if(pad & PADLdown) {PADL->y0 = CENTERY + 16;} // 🡫
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if(pad & PADLright){PADL->x0 = CENTERX - 64;} // 🡪
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if(pad & PADLleft) {PADL->x0 = CENTERX - 96;} // 🡨
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// Buttons
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if(pad & PADRup) {PADR->y0 = CENTERY - 16;} // △
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if(pad & PADRdown) {PADR->y0 = CENTERY + 16;} // ╳
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if(pad & PADRright){PADR->x0 = CENTERX + 66;} // ⭘
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if(pad & PADRleft) {PADR->x0 = CENTERX + 34;} // ⬜
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// Shoulder buttons
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if(pad & PADL1){TRIGGERL->y0 = CENTERY - 64;} // L1
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if(pad & PADL2){TRIGGERL->y0 = CENTERY - 96;} // L2
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if(pad & PADR1){TRIGGERR->y0 = CENTERY - 64;} // R1
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if(pad & PADR2){TRIGGERR->y0 = CENTERY - 96;} // R2
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// Start & Select
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if(pad & PADstart){START->w = 32; START->h = 32;START->x0 -= 4;START->y0 -= 4;} // START
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if(pad & PADselect){START->r0 = 0;} // SELECT
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FntPrint("Hello Pad!");
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FntFlush(-1);
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display();
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}
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return 0;
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}
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