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Changes applied to support generic virtual screens

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This commit is contained in:
Raimon Zamora
2021-11-24 19:00:46 +01:00
parent 160da08c3d
commit 50090e8a17
3 changed files with 227 additions and 55 deletions
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230
mini.cpp
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@@ -3,36 +3,36 @@
#include <string.h>
#include "lua.h"
#pragma pack(1)
struct surface_t {
uint8_t *pointer;
uint8_t *p;
uint16_t w, h;
uint32_t size_in_bytes;
uint32_t size;
};
#define swap(a, b) {auto tmp=a;a=b;b=tmp;}
char window_title[256];
#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
uint16_t screen_width = 160;
uint16_t screen_height = 120;
uint8_t screen_zoom = 4;
surface_t surfaces[10];
surface_t *screen_surface = &surfaces[0];
surface_t *dest_surface = screen_surface;
surface_t *source_surface = NULL;
surface_t *map_surface = NULL;
#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]
#define DEST(x, y) dest_surface->p[x+y*dest_surface->w]
#define SOURCE(x, y) source_surface->p[x+y*source_surface->w]
#define TILES(x, y) map_surface->p[x+y*map_surface->w]
#define CURRENT(x, y) surfaces[i].p[(x)+(y)*surfaces[i].w]
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};
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};
@@ -45,12 +45,9 @@ 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 };
uint32_t palette[16] = { 0x001a1c2c, 0x005d275d, 0x00b13e53, 0x00ef7d57, 0x00ffcd75, 0x00a7f070, 0x0038b764, 0x00257179,
0x0029366f, 0x003b5dc9, 0x0041a6f6, 0x0073eff7, 0x00f4f4f4, 0x0094b0c2, 0x00566c86, 0x00333c57 };
const char base64[65] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
@@ -61,10 +58,10 @@ uint16_t font[96];
char base64glyphs[193] = "/h/AqV/hhhh/GMYYMGz/t/eS33H477wsjjswY4IOPHEFFVVVAVAVAVIc+dJHMMM/h/qBgBgVqq+//eIUi/dJzhAAhzAAA/eM"
"AMShAAAQsjAAAwsjAAAeSzAAAcU3AAAEqRAAABVaiAAMezhAAAAAMAADH4wAASb2SAAMAttAQYcefACGOe+AAAVVAAAAbbAA";
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_line_size = (screen_width/4);
int debug_num_lines = (screen_height/6);
int debug_total_size = debug_line_size*debug_num_lines;
char *debug_text = NULL;
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 };
@@ -74,7 +71,25 @@ Uint8 key_just_pressed = 0;
int mouse_x, mouse_y, mouse_wheel;
Uint32 mouse_buttons;
char* get_value(char* line) {
struct bmp_header_t {
uint16_t header; // 'BM' 0x4D42
uint32_t file_size;
uint32_t reserved; // ignore
uint32_t bmp_offset; // This is where the bmp data starts
uint32_t header_size; // Must be 40
int32_t bmp_width;
int32_t bmp_height;
uint16_t num_color_planes; // Must be 1
uint16_t bpp;
uint32_t compression; // expected 0
uint32_t image_size; // warning, can be 0. Do not trust. Only useful for compressed BMPs (in my experience, it's always the size in bytes (not pixels) of the bmp)
int32_t hres; // ignore
int32_t vres; // ignore
uint32_t num_colors; // warning, can be 0. if 0, num_colors = 2^bpp
uint32_t num_important_colors; // ignore
};
char* get_value_from_line(char* line) {
char* equal_character = strchr(line, '=');
if (equal_character == NULL) return NULL;
*equal_character = '\0';
@@ -84,12 +99,15 @@ char* get_value(char* line) {
void read_ini() {
FILE *f = fopen("game.ini", "r");
char line[256];
if (f == NULL) return;
while (fgets(line, sizeof(line), f)) {
char *value = get_value(line);
char *value = get_value_from_line(line);
if (value != NULL) {
//if (strcmp(value, "title") == 0)
value[strlen(value)-1] = '\0';
if (strcmp(line, "title") == 0) strcpy(window_title, value);
else if (strcmp(line, "width") == 0) screen_width = atoi(value);
else if (strcmp(line, "height") == 0) screen_height = atoi(value);
else if (strcmp(line, "zoom") == 0) screen_zoom = atoi(value);
}
}
fclose(f);
@@ -98,25 +116,116 @@ void read_ini() {
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;
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;
for (int i=1; i<10; ++i) {
if (surfaces[i].p != NULL) free(surfaces[i].p);
surfaces[i].p = NULL;
}
}
uint8_t newsurf(int w, int h) {
int i = 0;
while (i<10 && surfaces[i].p != NULL) ++i;
//[TODO] Gestionar el cas en que no queden surfaces lliures
surfaces[i].w = w;
surfaces[i].h = h;
surfaces[i].size = w*h;
surfaces[i].p = (uint8_t*)malloc(surfaces[i].size);
return i;
}
uint8_t loadsurf(const char* filename) {
int i = 0;
while (i<10 && surfaces[i].p != NULL) ++i;
//[TODO] Gestionar el cas en que no queden surfaces lliures
FILE *f = fopen(filename, "rb");
if (f) {
bmp_header_t header;
fread(&header, 54, 1, f);
if (header.num_colors == 0) header.num_colors = 1 << header.bpp;
header.image_size = (header.bmp_width*header.bmp_height) * (8/header.bpp);
fseek(f, header.num_colors*4, SEEK_CUR);
uint8_t buffer[header.image_size];
fread(buffer, header.image_size, 1, f);
fclose(f);
surfaces[i].w = header.bmp_width;
surfaces[i].h = header.bmp_height;
surfaces[i].size = surfaces[i].w*surfaces[i].h;
surfaces[i].p = (uint8_t*)malloc(surfaces[i].size);
for (int y=0; y<surfaces[i].h; ++y) {
switch(header.bpp) {
case 1:
for (int x=0; x<(surfaces[i].w/8); ++x) {
CURRENT(x*8 , surfaces[i].w-1-y) = buffer[x+y*(surfaces[i].w/8)] >> 7;
CURRENT(x*8+1, surfaces[i].w-1-y) = ( buffer[x+y*(surfaces[i].w/8)] >> 6 ) & 0x1;
CURRENT(x*8+2, surfaces[i].w-1-y) = ( buffer[x+y*(surfaces[i].w/8)] >> 5 ) & 0x1;
CURRENT(x*8+3, surfaces[i].w-1-y) = ( buffer[x+y*(surfaces[i].w/8)] >> 4 ) & 0x1;
CURRENT(x*8+4, surfaces[i].w-1-y) = ( buffer[x+y*(surfaces[i].w/8)] >> 3 ) & 0x1;
CURRENT(x*8+5, surfaces[i].w-1-y) = ( buffer[x+y*(surfaces[i].w/8)] >> 2 ) & 0x1;
CURRENT(x*8+6, surfaces[i].w-1-y) = ( buffer[x+y*(surfaces[i].w/8)] >> 1 ) & 0x1;
CURRENT(x*8+7, surfaces[i].w-1-y) = buffer[x+y*(surfaces[i].w/8)] & 0x1;
}
break;
case 2:
for (int x=0; x<(surfaces[i].w/4); ++x) {
CURRENT(x*4 , surfaces[i].w-1-y) = buffer[x+y*(surfaces[i].w/4)] >> 6;
CURRENT(x*4+1, surfaces[i].w-1-y) = ( buffer[x+y*(surfaces[i].w/4)] >> 4 ) & 0x3;
CURRENT(x*4+2, surfaces[i].w-1-y) = ( buffer[x+y*(surfaces[i].w/4)] >> 2 ) & 0x3;
CURRENT(x*4+3, surfaces[i].w-1-y) = buffer[x+y*(surfaces[i].w/4)] & 0x3;
}
break;
case 4:
for (int x=0; x<(surfaces[i].w/2); ++x) {
CURRENT(x*2, surfaces[i].w-1-y) = buffer[x+y*(surfaces[i].w/2)] >> 4;
CURRENT(x*2+1, surfaces[i].w-1-y) = buffer[x+y*(surfaces[i].w/2)] & 0xf;
}
break;
case 8:
for (int x=0; x<(surfaces[i].w); ++x) {
CURRENT(x, surfaces[i].w-1-y) = buffer[x+y*(surfaces[i].w)];
}
break;
}
}
}
return i;
}
void freesurf(uint8_t surface) {
if (surfaces[surface].p != NULL) free(surfaces[surface].p);
surfaces[surface].p = NULL;
}
void setdest(uint8_t surface) {
dest_surface = &surfaces[surface];
}
void setsource(uint8_t surface) {
source_surface = &surfaces[surface];
}
void setmap(uint8_t surface) {
map_surface = &surfaces[surface];
}
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");
/*FILE *f = fopen("sprites.bmp", "rb");
if (f) {
uint8_t buffer[SPRITES_SIZE_BYTES/2];
fseek(f, 118, SEEK_SET);
@@ -128,17 +237,28 @@ int main(int argc,char*argv[]){
SPRITES(x*2+1, SPRITES_WIDTH-1-y) = buffer[x+y*(SPRITES_WIDTH/2)] & 0xf;
}
}
}
}*/
read_ini();
setdest(newsurf(screen_width, screen_height));
debug_line_size = (screen_width/4);
debug_num_lines = (screen_height/6);
debug_total_size = debug_line_size*debug_num_lines;
if (debug_text != NULL) free(debug_text);
debug_text = (char*)malloc(debug_total_size);
for (int i=0; i<debug_total_size;++i) debug_text[i] = 32;
SDL_Init(49);
mini_win = SDL_CreateWindow("", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, SCREEN_WIDTH*4, SCREEN_HEIGHT*4, SDL_WINDOW_SHOWN);
mini_win = SDL_CreateWindow(window_title, SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, screen_width*screen_zoom, screen_height*screen_zoom, 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);
SDL_RenderSetLogicalSize(mini_ren, screen_width, screen_height);
mini_bak = SDL_CreateTexture(mini_ren, SDL_PIXELFORMAT_ARGB8888, SDL_TEXTUREACCESS_STREAMING, screen_width, screen_height);
bool exit = false;
SDL_Event mini_eve;
reinit();
debug("MINI SYSTEM BOOTING...");
lua_init();
lua_call_init();
@@ -180,7 +300,7 @@ int main(int argc,char*argv[]){
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]]];
for (int i=0;i<screen_surface->size;++i) pixels[i] = palette[ds::screen_palette[screen_surface->p[i]]];
SDL_UnlockTexture(mini_bak);
SDL_RenderCopy(mini_ren, mini_bak, NULL, NULL);
SDL_RenderPresent(mini_ren);
@@ -191,7 +311,7 @@ int main(int argc,char*argv[]){
}
void cls(uint8_t color) {
SDL_memset(screen, color, SCREEN_SIZE_BYTES);
SDL_memset(dest_surface->p, color, dest_surface->size);
}
void color(uint8_t color) {
@@ -226,7 +346,7 @@ void palt(uint8_t col, bool 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;
DEST(x, y) = color;
}
void pset(int x, int y) {
@@ -235,9 +355,9 @@ void pset(int x, int y) {
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];
if (!ds::trans[ds::pen_color & 0xf]) DEST(x, y) = ds::draw_palette[ds::pen_color & 0xf];
} else {
if (!ds::fill_trans) SCREEN(x, y) = ds::draw_palette[ds::pen_color >> 4];
if (!ds::fill_trans) DEST(x, y) = ds::draw_palette[ds::pen_color >> 4];
}
}
@@ -248,8 +368,8 @@ void pset(int x, int y, uint8_t color) {
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);
if (x < 0 || x > (dest_surface->w-1) || y < 0 || y > (dest_surface->h-1)) return 0;
return DEST(x, y);
}
// Bresenham Line Algorithm
@@ -470,13 +590,13 @@ void ovalfill(int x0, int y0, int x1, int y1, uint8_t color) {
}
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);
if (x < 0 || x > (source_surface->w-1) || y < 0 || y > (source_surface->h-1)) return 0;
return SOURCE(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];
if (x < 0 || x > (source_surface->w-1) || y < 0 || y > (source_surface->h-1)) return;
SOURCE(x, y) = ds::draw_palette[ds::pen_color & 0xf];
}
void sset(int x, int y, uint8_t color) {
@@ -485,8 +605,8 @@ void sset(int x, int y, uint8_t color) {
}
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 tx = (n%(source_surface->w >> 3))<<3;
int ty = (n/(source_surface->w >> 3))<<3;
int tw = w*8 - 1;
int th = h*8 - 1;
//int tx2 = tx1 + tw;
@@ -597,12 +717,12 @@ 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;
if (celx < 0 || celx > (map_surface->w-1) || cely < 0 || cely > (map_surface->h-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;
if (celx < 0 || celx > (map_surface->w-1) || cely < 0 || cely > (map_surface->h-1)) return;
TILES(celx, cely) = snum;
}