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mini/mini.cpp

700 lines
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C++
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#include "mini.h"
#include <stdio.h>
#include "lua.h"
#define swap(a, b) {auto tmp=a;a=b;b=tmp;}
#define SCREEN_WIDTH 160
#define SCREEN_HEIGHT 120
#define SCREEN_SIZE_BYTES SCREEN_WIDTH*SCREEN_HEIGHT
#define SPRITES_WIDTH 128
#define SPRITES_HEIGHT 128
#define SPRITES_SIZE_BYTES SPRITES_WIDTH*SPRITES_HEIGHT
#define SPRITES_PER_LINE SPRITES_WIDTH/8
#define SPRITES_PER_ROW SPRITES_HEIGHT/8
#define TILES_WIDTH 128
#define TILES_HEIGHT 128
#define TILES_SIZE_BYTES TILES_WIDTH*TILES_HEIGHT
#define SCREEN(x, y) screen[x+(y)*SCREEN_WIDTH]
#define SPRITES(x, y) sprites[x+(y)*SPRITES_WIDTH]
#define TILES(x, y) tiles[x+(y)*TILES_WIDTH]
namespace ds {
uint8_t pen_color = 6;
int cam[2] = {0, 0};
int clip[4] = {0, 0, SCREEN_WIDTH, SCREEN_HEIGHT};
int clp[4] = {0, 0, SCREEN_WIDTH-1, SCREEN_HEIGHT-1};
uint8_t draw_palette[16] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
uint8_t screen_palette[16] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
bool trans[16] = {true, false, false, false, false, false, false, false, false, false, false, false, false, false, false, false};
uint16_t fill_pattern = 0b1111111111111111;
bool fill_trans = false;
}
SDL_Window *mini_win;
SDL_Renderer *mini_ren;
SDL_Texture *mini_bak;
Uint32 *pixels;
int pitch;
uint8_t screen[SCREEN_SIZE_BYTES];
uint8_t sprites[SPRITES_SIZE_BYTES];
uint8_t tiles[TILES_SIZE_BYTES];
uint32_t palette[16] = { 0x1a1c2c00, 0x5d275d00, 0xb13e5300, 0xef7d5700, 0xffcd7500, 0xa7f07000, 0x38b76400, 0x25717900,
0x29366f00, 0x3b5dc900, 0x41a6f600, 0x73eff700, 0xf4f4f400, 0x94b0c200, 0x566c8600, 0x333c5700 };
char base64font[241] = "00@B@]0X__OnZDYK[G10:9BTDEG5j20@1h000RB:_]OBjW?odl]Wlil9_oTT__omT@@02:DA477ADid@Z=nm]_[g9a[]oIi?;a9m]_mBjGB[M]99o_][]e]M"
"_?A]c_[eiLGBZ]e]mZ]o]Z]mlW:O9IABdTdZ000hR00__H[7?iH]3Oih;1?mXm5GjhB3M]897o]H]5^Mhm1ZchM5>LhB2]eXm2]oXZ5mlh<gJbBBJbJP?0Zm";
uint16_t font[96];
const int debug_line_size = (SCREEN_WIDTH/4);
const int debug_num_lines = (SCREEN_HEIGHT/6);
const int debug_total_size = debug_line_size*debug_num_lines;
char debug_text[debug_total_size];
int debug_cursor = 0;
//Uint8 keymapping[6] = { SDL_SCANCODE_LEFT, SDL_SCANCODE_RIGHT, SDL_SCANCODE_UP, SDL_SCANCODE_DOWN, SDL_SCANCODE_Z, SDL_SCANCODE_X };
const Uint8 *keys;
Uint8 key_just_pressed = 0;
int mouse_x, mouse_y;
Uint32 mouse_buttons;
void reinit() {
ds::pen_color = 6;
ds::cam[0] = ds::cam[1] = 0;
ds::clip[0] = ds::clip[1] = 0; ds::clip[2] = SCREEN_WIDTH; ds::clip[3] = SCREEN_HEIGHT;
ds::clp[0] = ds::clp[1] = 0; ds::clp[2] = SCREEN_WIDTH-1; ds::clp[3] = SCREEN_HEIGHT-1;
for(int i=0;i<16;++i)ds::draw_palette[i]=i;
for(int i=0;i<16;++i)ds::screen_palette[i]=i;
ds::trans[0]=true;for(int i=1;i<16;++i)ds::trans[i]=false;
ds::fill_pattern = 0b1111111111111111;
ds::fill_trans = false;
}
int main(int argc,char*argv[]){
for (int i=0; i<debug_total_size;++i) debug_text[i] = 32;
int bi = 0;
for (int ci=0; ci<96; ci+=2) {
font[ci] = base64font[bi]-48+(base64font[bi+1]-48<<6)+((base64font[bi+2]-48&7)<<12);
font[ci+1] = (base64font[bi+2]-48>>3)+(base64font[bi+3]-48<<3)+(base64font[bi+4]-48<<9);
bi += 5;
}
FILE *f = fopen("sprites.bmp", "rb");
if (f) {
uint8_t buffer[SPRITES_SIZE_BYTES/2];
fseek(f, 118, SEEK_SET);
fread(buffer, SPRITES_SIZE_BYTES/2, 1, f);
fclose(f);
for (int y=0; y<SPRITES_HEIGHT; ++y) {
for (int x=0; x<(SPRITES_WIDTH/2); ++x) {
SPRITES(x*2, SPRITES_WIDTH-1-y) = buffer[x+y*(SPRITES_WIDTH/2)] >> 4;
SPRITES(x*2+1, SPRITES_WIDTH-1-y) = buffer[x+y*(SPRITES_WIDTH/2)] & 0xf;
}
}
}
SDL_Init(49);
mini_win = SDL_CreateWindow("", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, SCREEN_WIDTH*4, SCREEN_HEIGHT*4, SDL_WINDOW_SHOWN);
mini_ren = SDL_CreateRenderer(mini_win, -1, SDL_RENDERER_PRESENTVSYNC);
//SDL_CreateWindowAndRenderer(512,512,0,&mini_win,&mini_ren);
SDL_RenderSetLogicalSize(mini_ren, SCREEN_WIDTH, SCREEN_HEIGHT);
mini_bak = SDL_CreateTexture(mini_ren, SDL_PIXELFORMAT_RGBA8888, SDL_TEXTUREACCESS_STREAMING, SCREEN_WIDTH, SCREEN_HEIGHT);
bool exit = false;
SDL_Event mini_eve;
debug("MINI SYSTEM BOOTING...");
lua_init();
lua_call_init();
while(!exit) {
key_just_pressed = 0;
while(SDL_PollEvent(&mini_eve)) {
if (mini_eve.type == SDL_QUIT) { exit=true; break; }
if (mini_eve.type == SDL_KEYDOWN) {
if (mini_eve.key.keysym.scancode == SDL_SCANCODE_ESCAPE) {
if (lua_is_playing()) {
lua_quit();
reinit();
} else {
lua_init();
lua_call_init();
}
} else if (mini_eve.key.keysym.scancode == SDL_SCANCODE_F5) {
lua_quit();
reinit();
lua_init();
lua_call_init();
} else {
key_just_pressed = mini_eve.key.keysym.scancode;
}
}
}
keys = SDL_GetKeyboardState(NULL);
mouse_buttons = SDL_GetMouseState(&mouse_x, &mouse_y);
mouse_x /= 4; mouse_y /= 4;
if (lua_is_playing()) {
lua_call_update();
} else {
loop();
}
SDL_LockTexture(mini_bak, NULL, (void**)&pixels, &pitch);
for (int i=0;i<SCREEN_SIZE_BYTES;++i) pixels[i] = palette[ds::screen_palette[screen[i]]];
SDL_UnlockTexture(mini_bak);
SDL_RenderCopy(mini_ren, mini_bak, NULL, NULL);
SDL_RenderPresent(mini_ren);
}
lua_quit();
SDL_Quit();
return 0;
}
void cls(uint8_t color) {
SDL_memset(screen, color, SCREEN_SIZE_BYTES);
}
void color(uint8_t color) {
ds::pen_color=color;
}
void pal() {
for (int i=0; i<16; ++i) {
ds::draw_palette[i] = i;
ds::screen_palette[i] = i;
}
palt();
}
void pal(uint8_t c0, uint8_t c1, uint8_t p) {
if (p==0) ds::draw_palette[c0] = c1; else if (p==1) ds::screen_palette[c0]=c1;
}
void palt() {
ds::trans[0] = true;
for (int i=1; i<16; ++i) ds::trans[i] = false;
}
void palt(uint16_t bits) {
for (int i=0; i<16; ++i) ds::trans[i] = (bits & (1<<i));
}
void palt(uint8_t col, bool t) {
ds::trans[col] = t;
}
void simple_pset(int x, int y, uint8_t color) {
x -= ds::cam[0]; y -= ds::cam[1];
if (x < ds::clp[0] || x > ds::clp[2] || y < ds::clp[1] || y > ds::clp[3]) return;
SCREEN(x, y) = color;
}
void pset(int x, int y) {
x -= ds::cam[0]; y -= ds::cam[1];
if (x < ds::clp[0] || x > ds::clp[2] || y < ds::clp[1] || y > ds::clp[3]) return;
int pbx = x % 4, pby = y % 4;
int pb = pbx+pby*4;
if (ds::fill_pattern & (1 << pb)) {
if (!ds::trans[ds::pen_color & 0xf]) SCREEN(x, y) = ds::draw_palette[ds::pen_color & 0xf];
} else {
if (!ds::fill_trans) SCREEN(x, y) = ds::draw_palette[ds::pen_color >> 4];
}
}
void pset(int x, int y, uint8_t color) {
ds::pen_color = color;
pset(x, y);
}
uint8_t pget(int x, int y) {
x -= ds::cam[0]; y -= ds::cam[1];
if (x < 0 || x > (SCREEN_WIDTH-1) || y < 0 || y > (SCREEN_HEIGHT-1)) return 0;
return SCREEN(x, y);
}
// Bresenham Line Algorithm
void line(int x0, int y0, int x1, int y1) {
int x, y;
int dx, dy;
int incx, incy;
int balance;
if (x1 >= x0) { dx = x1 - x0; incx = 1; } else { dx = x0 - x1; incx = -1; }
if (y1 >= y0) { dy = y1 - y0; incy = 1; } else { dy = y0 - y1; incy = -1; }
x = x0; y = y0;
if (dx >= dy) {
dy <<= 1;
balance = dy - dx;
dx <<= 1;
while (x != x1) {
pset(x, y);
if (balance >= 0) { y += incy; balance -= dx; }
balance += dy;
x += incx;
}
pset(x, y);
} else {
dx <<= 1;
balance = dx - dy;
dy <<= 1;
while (y != y1) {
pset(x, y);
if (balance >= 0) { x += incx; balance -= dy; }
balance += dx;
y += incy;
}
pset(x, y);
}
}
void line(int x0, int y0, int x1, int y1, uint8_t color) {
ds::pen_color = color;
line(x0, y0, x1, y1);
}
void hline(int x0, int y, int x1) {
if (x0>x1) swap(x0, x1);
for (int x=x0; x<=x1; ++x) pset(x, y);
}
void hline(int x0, int y, int x1, uint8_t color) {
ds::pen_color = color;
hline(x0, y, x1);
}
void vline(int x, int y0, int y1) {
if (y0>y1) swap(y0, y1);
for (int y=y0; y<=y1; ++y) pset(x, y);
}
void vline(int x, int y0, int y1, uint8_t color) {
ds::pen_color = color;
vline(x, y0, y1);
}
void rect(int x0, int y0, int x1, int y1) {
hline(x0, y0, x1);
hline(x0, y1, x1);
vline(x0, y0, y1);
vline(x1, y0, y1);
}
void rect(int x0, int y0, int x1, int y1, uint8_t color) {
ds::pen_color = color;
rect(x0, y0, x1, y1);
}
void rectfill(int x0, int y0, int x1, int y1) {
for (int y=y0; y<=y1; ++y) hline(x0, y, x1);
}
void rectfill(int x0, int y0, int x1, int y1, uint8_t color) {
ds::pen_color = color;
rectfill(x0, y0, x1, y1);
}
void fillp(uint16_t pat, bool transparent) {
ds::fill_trans = transparent;
ds::fill_pattern = pat;
}
void print_char(char chr, int x, int y) {
int xi = 0, yi = 0;
uint16_t val = 1;
while(1) {
if (font[chr-32] & val) pset(x+xi, y+yi);
if (xi<2) xi++; else { if (yi==4) return; else { xi=0; yi++; } }
val <<= 1;
}
}
void print(const char *str, int x, int y) {
for (int i=0; i < SDL_strlen(str); ++i) print_char(str[i], x+i*4, y);
}
void print(const char *str, int x, int y, uint8_t color) {
ds::pen_color=color;
print(str, x, y);
}
void clip(int x, int y, int w, int h) {
ds::clip[0] = x; ds::clip[1] = y; ds::clip[2] = w; ds::clip[3] = h;
ds::clp[0] = x; ds::clp[1] = y; ds::clp[2] = w-x-1; ds::clp[3] = h-y-1;
}
void camera(int x, int y) {
ds::cam[0] = x;
ds::cam[1] = y;
}
void _drawcirc(int xc, int yc, int x, int y) {
pset(xc+x, yc+y);
pset(xc-x, yc+y);
pset(xc+x, yc-y);
pset(xc-x, yc-y);
pset(xc+y, yc+x);
pset(xc-y, yc+x);
pset(xc+y, yc-x);
pset(xc-y, yc-x);
}
void _fillcirc(int xc, int yc, int x, int y) {
hline(xc-x, yc+y, xc+x);
hline(xc-x, yc-y, xc+x);
hline(xc-y, yc+x, xc+y);
hline(xc-y, yc-x, xc+y);
}
void _anycirc(int x, int y, uint8_t r, void (*fun_ptr)(int, int, int, int)) {
int xi=0, yi=r;
int d=3-2*r;
(*fun_ptr)(x, y, xi, yi);
while (yi>=xi++) {
d += d>0 ? 4*(xi-yi--)+10 : 4*xi+6;
(*fun_ptr)(x, y, xi, yi);
}
}
void circ(int x, int y, uint8_t r) {
_anycirc(x, y, r, &_drawcirc);
}
void circ(int x, int y, uint8_t r, uint8_t color) {
ds::pen_color=color;
circ(x, y, r);
}
void circfill(int x, int y, uint8_t r) {
_anycirc(x, y, r, &_fillcirc);
}
void circfill(int x, int y, uint8_t r, uint8_t color) {
ds::pen_color=color;
circfill(x, y, r);
}
void _drawoval(int xc, int yc, int x, int y, float xf, float yf) {
pset((xc+x)*xf, (yc+y)*yf);
pset((xc-x)*xf, (yc+y)*yf);
pset((xc+x)*xf, (yc-y)*yf);
pset((xc-x)*xf, (yc-y)*yf);
pset((xc+y)*xf, (yc+x)*yf);
pset((xc-y)*xf, (yc+x)*yf);
pset((xc+y)*xf, (yc-x)*yf);
pset((xc-y)*xf, (yc-x)*yf);
}
void _filloval(int xc, int yc, int x, int y, float xf, float yf) {
hline((xc-x)*xf, (yc+y)*yf, (xc+x)*xf);
hline((xc-x)*xf, (yc-y)*yf, (xc+x)*xf);
hline((xc-y)*xf, (yc+x)*yf, (xc+y)*xf);
hline((xc-y)*xf, (yc-x)*yf, (xc+y)*xf);
}
void _anyoval(int x0, int y0, int x1, int y1, void (*fun_ptr)(int, int, int, int, float, float)) {
int rx = (x1-x0)/2;
int ry = (y1-y0)/2;
int r = rx;
int x = x0 + rx;
int y = y0 + ry;
float xf = 1.0f, yf = 1.0f;
if (rx>=ry) {r=rx;yf=float(ry)/float(rx);} else {r=ry;xf=float(rx)/float(ry);}
int xi=0, yi=r;
int d=3-2*r;
(*fun_ptr)(x, y, xi, yi, xf, yf);
while (yi>=xi++) {
d += d>0 ? 4*(xi-yi--)+10 : 4*xi+6;
(*fun_ptr)(x, y, xi, yi, xf, yf);
}
}
void oval(int x0, int y0, int x1, int y1) {
_anyoval(x0, y0, x1, y1, &_drawoval);
}
void oval(int x0, int y0, int x1, int y1, uint8_t color) {
ds::pen_color=color;
oval(x0, y0, x1, y1);
}
void ovalfill(int x0, int y0, int x1, int y1) {
_anyoval(x0, y0, x1, y1, &_filloval);
}
void ovalfill(int x0, int y0, int x1, int y1, uint8_t color) {
ds::pen_color=color;
ovalfill(x0, y0, x1, y1);
}
uint8_t sget(int x, int y) {
if (x < 0 || x > (SPRITES_WIDTH-1) || y < 0 || y > (SPRITES_HEIGHT-1)) return 0;
return SPRITES(x, y);
}
void sset(int x, int y) {
if (x < 0 || x > (SPRITES_WIDTH-1) || y < 0 || y > (SPRITES_HEIGHT-1)) return;
SPRITES(x, y) = ds::draw_palette[ds::pen_color & 0xf];
}
void sset(int x, int y, uint8_t color) {
ds::pen_color=color;
sset(x, y);
}
void spr(uint8_t n, int x, int y, float w, float h, bool flip_x, bool flip_y) {
int tx = (n%(SPRITES_PER_LINE))<<3;
int ty = (n/(SPRITES_PER_LINE))<<3;
int tw = w*8 - 1;
int th = h*8 - 1;
//int tx2 = tx1 + tw;
//int ty2 = ty1 + th;
int txd = 1;
int tyd = 1;
if (flip_x) {tx+=tw;txd=-1;}
if (flip_y) {ty+=th;tyd=-1;}
for (int yi=0; yi<=th; ++yi) {
int ttx = tx;
for (int xi=0; xi<=tw; ++xi) {
pset(x+xi, y+yi, sget(ttx, ty));
ttx += txd;
}
ty += tyd;
}
}
void sspr(int sx, int sy, int sw, int sh, int dx, int dy, int dw, int dh, bool flip_x, bool flip_y) {
if (dw==0)dw=sw; if (dh==0)dh=sh;
float sdx = float(sw)/float(dw);
float sdy = float(sh)/float(dh);
float ssx = sx; float ssy = sy;
if (flip_x) { sdx = -sdx; ssx += sw+sdx; }
if (flip_y) { sdy = -sdy; ssy += sh+sdy; }
float csx = ssx;
float csy = ssy;
for(int y=dy;y<dy+dh;++y) {
csx = ssx;
for(int x=dx;x<dx+dw;++x) {
pset(x, y, sget(SDL_max(sx, csx), SDL_max(sy,csy)));
csx += sdx;
}
csy += sdy;
}
}
void tline(int x0, int y0, int x1, int y1, float mx, float my, float mdx, float mdy) {
int x, y;
int dx, dy;
int incx, incy;
int balance;
if (x1 >= x0) { dx = x1 - x0; incx = 1; } else { dx = x0 - x1; incx = -1; }
if (y1 >= y0) { dy = y1 - y0; incy = 1; } else { dy = y0 - y1; incy = -1; }
x = x0; y = y0;
if (dx >= dy) {
dy <<= 1;
balance = dy - dx;
dx <<= 1;
while (x != x1) {
pset(x, y, sget(mx*8, my*8));
if (balance >= 0) { y += incy; balance -= dx; }
balance += dy;
x += incx;
mx += mdx;
my += mdy;
}
pset(x, y, sget(mx*8, my*8));
} else {
dx <<= 1;
balance = dx - dy;
dy <<= 1;
while (y != y1) {
pset(x, y, sget(mx*8, my*8));
if (balance >= 0) { x += incx; balance -= dy; }
balance += dx;
y += incy;
mx += mdx;
my += mdy;
}
pset(x, y, sget(mx*8, my*8));
}
}
void thline(int x0, int y, int x1, float mx, float my, float mdx, float mdy) {
if (x0>x1) swap(x0, x1);
for (int x=x0; x<=x1; ++x) {
pset(x, y, sget(mx*8, my*8));
mx += mdx;
my += mdy;
}
}
void tvline(int x, int y0, int y1, float mx, float my, float mdx, float mdy) {
if (y0>y1) swap(y0, y1);
for (int y=y0; y<=y1; ++y) {
pset(x, y, sget(mx*8, my*8));
mx += mdx;
my += mdy;
}
}
void cline(int x0, int y0, int x1, int y1, uint8_t c0, uint8_t c1) {
}
void chline(int x0, int y, int x1, uint8_t c0, uint8_t c1) {
}
void cvline(int x, int y0, int y1, uint8_t c0, uint8_t c1) {
}
uint8_t mget(uint8_t celx, uint8_t cely) {
if (celx < 0 || celx > (TILES_WIDTH-1) || cely < 0 || cely > (TILES_HEIGHT-1)) return 0;
return TILES(celx, cely);
}
void mset(uint8_t celx, uint8_t cely, uint8_t snum) {
if (celx < 0 || celx > (TILES_WIDTH-1) || cely < 0 || cely > (TILES_HEIGHT-1)) return;
TILES(celx, cely) = snum;
}
void map(uint8_t celx, uint8_t cely, int sx, int sy, uint8_t celw, uint8_t celh, uint8_t layer) {
//if (celw <= 0 || celh <= 0 || celw >= TILES_WIDTH || celh >= TILES_HEIGHT) return;
sx -= ds::cam[0]; sy -= ds::cam[1];
if (sx+celw*8 < ds::clp[0] || sx > ds::clp[2] || sy+celh*8 < ds::clp[1] || sy > ds::clp[3]) return;
if (sx<0) {
int diff = -sx/8;
celx += diff;
celw -= diff;
sx += diff*8;
}
if (sy<0) {
int diff = -sy/8;
cely += diff;
celh -= diff;
sy += diff*8;
}
sx += ds::cam[0]; sy += ds::cam[1];
for (int y=0; y<celh; ++y) {
for (int x=0; x<celw; ++x) {
spr(mget(celx+x, cely+y), sx+x*8, sy+y*8);
}
}
}
bool btn(uint8_t i) {
return keys[i];
}
bool btnp(uint8_t i) {
return key_just_pressed == i;
}
int mouseX() {
return mouse_x;
}
int mouseY() {
return mouse_y;
}
bool mouseButton(uint8_t i) {
return mouse_buttons & SDL_BUTTON(i);
}
float time() {
return float(SDL_GetTicks())/1000.0f;
}
/*float abs(float x) {
return SDL_fabsf(x);
}*/
float flr(float x) {
return SDL_floorf(x);
}
float sgn(float x) {
return x >= 0 ? 1 : -1;
}
#ifndef __LINUX__
float ceil(float x) {
return SDL_ceilf(x);
}
float sin(float x) {
return SDL_sinf(x);
}
float cos(float x) {
return SDL_cosf(x);
}
float atan2(float dx, float dy) {
return SDL_atan2f(dx, dy);
}
float sqrt(float x) {
return SDL_sqrtf(x);
}
#endif
float max(float x, float y) {
return SDL_max(x, y);
}
float mid(float x, float y, float z) {
return max(x, min(y, z));
}
float min(float x, float y) {
return SDL_min(x, y);
}
int rnd(int x) {
return rand()%x;
}
/*void srand(int x) {
srand(x);
}*/
void debug_one_line_up() {
for (int i=0; i<debug_total_size-debug_line_size;++i) debug_text[i] = debug_text[i+debug_line_size];
for (int i=debug_total_size-debug_line_size; i<debug_total_size;++i) debug_text[i] = 32;
debug_cursor = debug_total_size-debug_line_size;
}
void debug(const char *str) {
const int len = SDL_strlen(str);
for (int i=0; i<len;++i) {
debug_text[debug_cursor++] = str[i];
if (debug_cursor >= debug_total_size) debug_one_line_up();
}
debug_cursor = (int(debug_cursor/debug_line_size)+1)*debug_line_size;
if (debug_cursor >= debug_total_size) debug_one_line_up();
}
void pdebug() {
int i=0;
for (int y=0; y<debug_num_lines;++y) {
for (int x=0; x<debug_line_size;++x) {
print_char(debug_text[i++], x*4, y*6);
}
}
}
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