add tile example + readme typo

This commit is contained in:
ABelliqueux 2020-12-23 12:12:38 +01:00
parent 7625cc00a4
commit e4d9032eb3
2 changed files with 126 additions and 1 deletions

View File

@ -6,7 +6,7 @@ This repo is destined to host a bunch of simple examples, each describing how to
The code here will be using PsyQ, the "Official" Sony SDK, but we will not be using libGS, the Extended Graphics Library.
Instead we'll try to devises methods to reproduce libgs functions. This will not necessarly more efficient, but we'll learn
Instead we'll try to devise methods to reproduce libgs functions. This will not necessarly be more efficient, but we'll learn
a lot more stuff !

125
hello_tile.c Normal file
View File

@ -0,0 +1,125 @@
#include <sys/types.h>
#include <stdio.h>
#include <libgte.h>
#include <libetc.h>
#include <libgpu.h>
#define VMODE 0 // Video Mode : 0 : NTSC, 1: PAL
#define SCREENXRES 320
#define SCREENYRES 240
#define CENTERX SCREENXRES/2
#define CENTERY SCREENYRES/2
#define MARGINX 0 // margins for text display
#define MARGINY 32
#define FONTSIZE 8 * 7 // Text Field Height
#define OTLEN 8 // Ordering Table Length
DISPENV disp[2]; // Double buffered DISPENV and DRAWENV
DRAWENV draw[2];
u_long ot[2][OTLEN]; // double ordering table of length 8 * 32 = 256 bits / 32 bytes
char primbuff[2][32768] = {1};// double primitive buffer of length 32768 * 8 = 262.144 bits / 32,768 Kbytes
char *nextpri = primbuff[0]; // pointer to the next primitive in primbuff. Initially, points to the first bit of primbuff[0]
short db = 0; // index of which buffer is used, values 0, 1
void init(void)
{
ResetGraph(0);
SetDefDispEnv(&disp[0], 0, 0, SCREENXRES, SCREENYRES);
SetDefDispEnv(&disp[1], 0, SCREENYRES, SCREENXRES, SCREENYRES);
SetDefDrawEnv(&draw[0], 0, SCREENYRES, SCREENXRES, SCREENYRES);
SetDefDrawEnv(&draw[1], 0, 0, SCREENXRES, SCREENYRES);
if (VMODE)
{
SetVideoMode(MODE_PAL);
disp[0].screen.y += 8;
disp[1].screen.y += 8;
}
setRGB0(&draw[0], 50, 50, 50);
setRGB0(&draw[1], 50, 50, 50);
draw[0].isbg = 1;
draw[1].isbg = 1;
PutDispEnv(&disp[db]);
PutDrawEnv(&draw[db]);
FntLoad(960, 0);
FntOpen(MARGINX, SCREENYRES - MARGINY - FONTSIZE, SCREENXRES - MARGINX * 2, FONTSIZE, 0, 280 );
}
void display(void)
{
DrawSync(0);
VSync(0);
PutDispEnv(&disp[db]);
PutDrawEnv(&draw[db]);
SetDispMask(1);
DrawOTag(ot[db] + OTLEN - 1);
db = !db;
nextpri = primbuff[db];
}
int main(void)
{
TILE * blue_tile;
TILE * pink_tile;
init();
while (1)
{
ClearOTagR(ot[db], OTLEN); // Initialize the reversed ordering table. Last element will be drawn first.
blue_tile = (TILE * ) nextpri; // blue_tile is a pointer to primbuf content at adress nextpri, that's cast (type converted) to a blue_tile struc.
setTile(blue_tile); // initialize the blue_tile structure ( fill the length and tag(?) value )
setXY0(blue_tile, CENTERX - 16, CENTERY - 32); // Set X,Y
setWH(blue_tile, 32, 64); // Set Width, Height
setRGB0(blue_tile, 60, 180, 255); // Set color
addPrim(ot[db], blue_tile); // Add primitive to ordering table
nextpri += sizeof(TILE); // Increment the adress nextpri points to by the size of TILE struct
// pink_tile is after blue_tile in the code,
// but we're using a reversed ordering table
// so it is drawn before, thus bellow blue_tile.
pink_tile = (TILE * ) nextpri; // pink_tile is a pointer to primbuf content at adress nextpri, that's cast (type converted) to a TILE struc.
setTile(pink_tile); // initialize the TILE structure ( fill the length and tag(?) value )
setXY0(pink_tile, CENTERX, CENTERY - 64); // Set X,Y
setWH(pink_tile, 64, 64); // Set Width, Height
setRGB0(pink_tile, 255, 32, 255); // Set color
addPrim(ot[db], pink_tile); // Add primitive to ordering table
nextpri += sizeof(TILE);
FntPrint("Hello tile !");
FntFlush(-1);
display();
}
return 0;
}