extremely primitive screen impl

2026-03-30 23:25:56 +02:00
parent 6086208879
commit 5c854e5c4a
6 changed files with 309 additions and 5 deletions
--- a/src/luaarch.c
+++ b/src/luaarch.c
@@ -281,6 +281,10 @@ static int luaArch_component_list(lua_State *L) {
 	luaArch *arch = luaArch_from(L);
 	lua_createtable(L, 64, 0);
 	size_t len = nn_countComponents(arch->computer);
+	if(len == 0) {
+		lua_createtable(L, 0, 0);
+		return 1;
+	}
 	const char *comps[len];
 	nn_getComponents(arch->computer, comps);
 	for(size_t i = 0; i < len; i++) {
@@ -377,6 +381,10 @@ static int luaArch_component_methods(lua_State *L) {
 		return 2;
 	}
 	size_t methodLen = nn_countComponentMethods(c);
+	if(methodLen == 0) {
+		lua_createtable(L, 0, 0);
+		return 1;
+	}
 	const char *methods[methodLen];
 	nn_getComponentMethods(c, methods, &methodLen);
 	lua_createtable(L, 0, methodLen);
@@ -402,6 +410,10 @@ static int luaArch_component_fields(lua_State *L) {
 		return 2;
 	}
 	size_t methodLen = nn_countComponentMethods(c);
+	if(methodLen == 0) {
+		lua_createtable(L, 0, 0);
+		return 1;
+	}
 	const char *methods[methodLen];
 	nn_getComponentMethods(c, methods, &methodLen);
 	lua_createtable(L, 0, methodLen);
--- a/src/main.c
+++ b/src/main.c
@@ -412,6 +412,19 @@ int main(int argc, char **argv) {
 	double nextSecond = 0;
 	double wattage = 0;

+	nn_Component *screen = ncl_createScreen(u, NULL, &nn_defaultScreens[3]);
+	//nn_Component *gpu = ncl_createGPU(u, NULL, &nn_defaultGPUs[3]);
+
+	{
+		// draw test
+		const char *s = "hello there";
+		for(size_t i = 0; s[i]; i++) {
+			unsigned char c = s[i];
+			ncl_ScreenState *scrstate = nn_getComponentState(screen);
+			ncl_setScreenPixel(scrstate, i+1, 1, c, 0xFFFFFF, 0x000000, false, false);
+		}
+	}
+

 restart:;
 	nn_Computer *c = nn_createComputer(u, NULL, "computer0", ramTotal, 256, 256);
@@ -426,6 +439,7 @@ restart:;
 	nn_setArchitecture(c, &arch);
 	nn_addSupportedArchitecture(c, &arch);

+	nn_mountComponent(c, screen, -1);
 	nn_mountComponent(c, ocelotCard, -1);
 	nn_mountComponent(c, eepromCard, 0);
 	nn_mountComponent(c, managedfs, 1);
@@ -436,6 +450,31 @@ restart:;
 		BeginDrawing();
 		ClearBackground(BLACK);

+		// drawing the screen
+		{
+			int offX = 0;
+			int offY = 0;
+			int cheight = 20;
+			int cwidth = MeasureText("A", cheight);
+
+			ncl_ScreenState *scrbuf = nn_getComponentState(screen);
+			ncl_lockScreen(scrbuf);
+			size_t scrw, scrh;
+			ncl_getScreenResolution(scrbuf, &scrw, &scrh);
+			for(int y = 1; y <= scrh; y++) {
+				for(int x = 1; x <= scrw; x++) {
+					ncl_Pixel p = ncl_getScreenPixel(scrbuf, x, y);
+					Vector2 pos = {
+						offX + (x - 1) * cwidth,
+						offY + (y - 1) * cheight,
+					};
+					DrawRectangle(pos.x, pos.y, cwidth, cheight, ne_processColor(p.bgColor));
+					DrawTextCodepoint(font, p.codepoint, pos, cheight, ne_processColor(p.fgColor));
+				}
+			}
+			ncl_unlockScreen(scrbuf);
+		}
+
 		int statY = 10;
 		if(sand.buf != NULL) {
 			DrawText(TextFormat("mem used: %.2f%%", (double)sand.used / sand.cap * 100), 10, statY, 20, YELLOW);
@@ -536,6 +575,8 @@ cleanup:;
 	nn_destroyComputer(c);
 	nn_dropComponent(ocelotCard);
 	nn_dropComponent(eepromCard);
+	nn_dropComponent(managedfs);
+	nn_dropComponent(screen);
 	// rip the universe
 	nn_destroyUniverse(u);
 	UnloadFont(font);
--- a/src/ncomplib.c
+++ b/src/ncomplib.c
@@ -274,7 +274,21 @@ bool ncl_remove(ncl_VFS vfs, const char *path) {
 	return vfs.handler(&req);
 }

-bool ncl_removeRecursive(ncl_VFS vfs, const char *path);
+bool ncl_removeRecursive(ncl_VFS vfs, const char *path) {
+	ncl_Stat s;
+	if(!ncl_stat(vfs, path, &s)) return false;
+	if(s.isDirectory) {
+		void *dir = ncl_opendir(vfs, path);
+		char name[NN_MAX_PATH];
+		while(ncl_readdir(vfs, dir, name)) {
+			char subpath[NN_MAX_PATH];
+			snprintf(subpath, sizeof(subpath), "%s%c%s", path, vfs.pathsep, name);
+			ncl_removeRecursive(vfs, subpath);
+		}
+		ncl_closedir(vfs, dir);
+	}
+	return ncl_remove(vfs, path);
+}

 bool ncl_mkdir(ncl_VFS vfs, const char *path) {
 	ncl_VFSRequest req;
@@ -298,6 +312,7 @@ typedef struct ncl_ScreenPixel {

 typedef struct ncl_ScreenState {
 	nn_Context *ctx;
+	nn_Lock *lock;
 	nn_ScreenConfig conf;
 	int width;
 	int height;
@@ -308,6 +323,8 @@ typedef struct ncl_ScreenState {
 	int *resolvedPalette;
 	ncl_ScreenPixel *pixels;
 	ncl_ScreenFlags flags;
+	size_t keyboardCount;
+	char *keyboards[NCL_MAX_KEYBOARD];
 } ncl_ScreenState;

 typedef struct nn_VRAMBuf {
@@ -378,7 +395,6 @@ typedef struct ncl_DriveState {
 	size_t usage;
 	size_t lastSector;
 	char *path;
-	FILE *file;
 	char label[NN_MAX_LABEL];
 	size_t labellen;
 } ncl_DriveState;
@@ -637,6 +653,23 @@ static nn_Exit ncl_fsHandler(nn_FSRequest *req) {
 		nn_unlock(ctx, state->lock);
 		return NN_OK;
 	}
+	if(req->action == NN_FS_STAT) {
+		nn_lock(ctx, state->lock);
+		char path[NN_MAX_PATH];
+		ncl_fixPath(state, req->stat.path, path);
+		ncl_Stat s;
+		if(!ncl_stat(state->vfs, path, &s)) {
+			nn_unlock(ctx, state->lock);
+			nn_setError(C, "no such file or directory");
+			return NN_EBADCALL;
+		}
+		req->stat.isDirectory = s.isDirectory;
+		req->stat.size = s.size;
+		req->stat.lastModified = s.lastModified;
+		nn_unlock(ctx, state->lock);
+		return NN_OK;
+	}
+	// TODO: mkdir, rename

 	if(C) nn_setError(C, "not implemented yet");
 	return NN_EBADCALL;
@@ -677,12 +710,16 @@ nn_Component *ncl_createFilesystem(nn_Universe *universe, const char *address, c
 		nn_free(ctx, state, sizeof(*state));
 		return NULL;
 	}
+	// TODO: handle OOM case
+	nn_setComponentTypeID(c, NCL_FS);
 	return c;
 }

 nn_Component *ncl_createDrive(nn_Universe *universe, const char *address, const char *path, const nn_Drive *drive, bool isReadonly);
 nn_Component *ncl_createEEPROM(nn_Universe *universe, const char *address, const char *codepath, const char *datapath, bool isReadonly);

+ncl_VFS ncl_setVFS(nn_Component *component, ncl_VFS vfs);
+
 static ncl_ScreenPixel ncl_getRealScreenPixel(const ncl_ScreenState *state, int x, int y) {
 	if(x < 1 || y < 1 || x >= state->width || y >= state->height) {
 		return (ncl_ScreenPixel) {
@@ -740,9 +777,99 @@ static void ncl_recomputeScreen(const ncl_ScreenState *state) {
 	}
 }

-nn_Component *ncl_createScreen(nn_Universe *universe, const char *address, const nn_ScreenConfig *config);
+static nn_Exit ncl_screenHandler(nn_ScreenRequest *req) {
+	nn_Context *ctx = req->ctx;
+	nn_Computer *C = req->computer;
+	ncl_ScreenState *state = req->state;
+	const nn_ScreenConfig *conf = req->screen;
+
+	if(req->action == NN_SCREEN_DROP) {
+		for(size_t i = 0; i < state->keyboardCount; i++) {
+			nn_strfree(ctx, state->keyboards[i]);
+		}
+		nn_destroyLock(ctx, state->lock);
+		nn_free(ctx, state->pixels, sizeof(ncl_ScreenPixel) * state->conf.maxWidth * state->conf.maxHeight);
+		nn_free(ctx, state->palette, sizeof(int) * state->conf.paletteColors);
+		nn_free(ctx, state->resolvedPalette, sizeof(int) * state->conf.paletteColors);
+		nn_free(ctx, state, sizeof(*state));
+		return NN_OK;
+	}
+
+	if(C) nn_setError(C, "ncl-screen: not implemented yet");
+	return NN_EBADCALL;
+}
+
+nn_Component *ncl_createScreen(nn_Universe *universe, const char *address, const nn_ScreenConfig *config) {
+	nn_Context *ctx = nn_getUniverseContext(universe);
+	ncl_ScreenState *screen = NULL;
+	ncl_ScreenPixel *pixels = NULL;
+	int *palette = NULL;
+	int *resolvedPalette = NULL;
+	nn_Component *c = NULL;
+	nn_Lock *lock = NULL;
+
+	screen = nn_alloc(ctx, sizeof(ncl_ScreenState));
+	if(screen == NULL) goto fail;
+
+	lock = nn_createLock(ctx);
+	if(lock == NULL) goto fail;
+
+	pixels = nn_alloc(ctx, sizeof(ncl_ScreenPixel) * config->maxWidth * config->maxHeight);
+	if(pixels == NULL) goto fail;
+
+	palette = nn_alloc(ctx, sizeof(int) * config->paletteColors);
+	if(palette == NULL) goto fail;
+	memcpy(palette, config->defaultPalette, sizeof(int) * config->paletteColors);
+	
+	resolvedPalette = nn_alloc(ctx, sizeof(int) * config->paletteColors);
+	if(resolvedPalette == NULL) goto fail;
+
+	screen->conf = *config;
+	screen->ctx = ctx;
+	screen->lock = lock;
+	screen->width = config->maxWidth;
+	screen->height = config->maxHeight;
+	screen->palette = palette;
+	screen->resolvedPalette = resolvedPalette;
+	screen->pixels = pixels;
+	screen->flags = 0;
+	screen->depth = config->maxDepth;
+	screen->viewportWidth = screen->width;
+	screen->viewportHeight = screen->height;
+	screen->keyboardCount = 0;
+
+	ncl_resetScreen(screen);
+
+	c = nn_createScreen(universe, address, config, screen, ncl_screenHandler);
+	if(c == NULL) goto fail;
+
+	if(nn_setComponentTypeID(c, NCL_SCREEN)) goto fail;
+
+	return c;
+
+fail:;
+	if(c != NULL) {
+		nn_dropComponent(c);
+		return NULL;
+	}
+	if(lock != NULL) nn_destroyLock(ctx, lock);
+	nn_free(ctx, screen, sizeof(*screen));
+	nn_free(ctx, palette, sizeof(int) * config->paletteColors);
+	nn_free(ctx, resolvedPalette, sizeof(int) * config->paletteColors);
+	nn_free(ctx, pixels, sizeof(ncl_ScreenPixel) * config->maxWidth * config->maxHeight);
+	return NULL;
+}
+
 nn_Component *ncl_createGPU(nn_Universe *universe, const char *address, const nn_GPU *gpu);

+void ncl_lockScreen(ncl_ScreenState *state) {
+	nn_lock(state->ctx, state->lock);
+}
+
+void ncl_unlockScreen(ncl_ScreenState *state) {
+	nn_unlock(state->ctx, state->lock);
+}
+
 void ncl_resetScreen(ncl_ScreenState *state) {
 	state->width = state->conf.maxWidth;
 	state->height = state->conf.maxHeight;
@@ -784,6 +911,18 @@ ncl_Pixel ncl_getScreenPixel(const ncl_ScreenState *state, int x, int y) {
 	};
 }

+void ncl_setScreenPixel(ncl_ScreenState *state, int x, int y, nn_codepoint codepoint, int fg, int bg, bool isFgPalette, bool isBgPalette) {
+	ncl_ScreenPixel p = {
+		.codepoint = codepoint,
+		.storedFg = fg,
+		.storedBg = bg,
+		.realFg = isFgPalette ? -1 : fg,
+		.realBg = isBgPalette ? -1 : bg,
+	};
+	ncl_setRealScreenPixel(state, x, y, p);
+	ncl_recomputeScreen(state);
+}
+
 ncl_ScreenFlags ncl_getScreenFlags(const ncl_ScreenState *state) {
 	return state->flags;
 }
@@ -792,6 +931,19 @@ void ncl_setScreenFlags(ncl_ScreenState *state, ncl_ScreenFlags flags) {
 	state->flags = flags;
 }

+char ncl_getScreenDepth(ncl_ScreenState *state) {
+	return state->depth;
+}
+
+void ncl_setScreenDepth(ncl_ScreenState *state, char depth) {
+	state->depth = depth;
+}
+
+nn_Exit ncl_mountKeyboard(ncl_ScreenState *state, const char *keyboardAddress);
+void ncl_unmountKeyboard(ncl_ScreenState *state, const char *keyboardAddress);
+bool ncl_hasKeyboard(ncl_ScreenState *state, const char *keyboardAddress);
+const char *ncl_getKeyboard(ncl_ScreenState *state, size_t idx);
+
 // general stuff

 void ncl_statComponent(nn_Component *component, ncl_ComponentStat *stat) {
@@ -843,6 +995,19 @@ void ncl_statComponent(nn_Component *component, ncl_ComponentStat *stat) {
 		nn_unlock(ee->ctx, ee->lock);
 		return;
 	}
+	if(strcmp(ty, NCL_SCREEN) == 0) {
+		ncl_ScreenState *screen = state;
+		nn_lock(screen->ctx, screen->lock);
+		stat->screen.conf = &screen->conf;
+		stat->screen.depth = screen->depth;
+		stat->screen.flags = screen->flags;
+		stat->screen.keyboardCount = screen->keyboardCount;
+		stat->screen.viewportWidth = screen->viewportWidth;
+		stat->screen.viewportHeight = screen->viewportHeight;
+		stat->screen.state = screen;
+		nn_unlock(screen->ctx, screen->lock);
+		return;
+	}
 }

 // For EEPROMs, filesystems, drives
--- a/src/ncomplib.h
+++ b/src/ncomplib.h
@@ -10,6 +10,7 @@
 #define NCL_SCREEN "ncl-screen"

 #define NCL_MAX_VRAMBUF 128
+#define NCL_MAX_KEYBOARD 64

 // very low-level actions
 // some environment have VFSes so
@@ -32,7 +33,7 @@ typedef struct ncl_Stat {
 	size_t diskSize;
 	// The UNIX timestamp of the last modified date
 	// of the entry.
-	size_t lastModified;
+	intptr_t lastModified;
 } ncl_Stat;

 typedef enum ncl_VFSAction {
@@ -235,6 +236,8 @@ typedef struct ncl_ComponentStat {
 			ncl_ScreenFlags flags;
 			int viewportWidth;
 			int viewportHeight;
+			char depth;
+			size_t keyboardCount;
 		} screen;
 	};
 } ncl_ComponentStat;
@@ -244,11 +247,20 @@ void ncl_statComponent(nn_Component *component, ncl_ComponentStat *stat);
 // Returns whether it was successful or not.
 bool ncl_makeReadonly(nn_Component *component);

+void ncl_lockScreen(ncl_ScreenState *state);
+void ncl_unlockScreen(ncl_ScreenState *state);
 void ncl_resetScreen(ncl_ScreenState *state);
 void ncl_getScreenResolution(const ncl_ScreenState *state, size_t *width, size_t *height);
 void ncl_getScreenViewport(const ncl_ScreenState *state, size_t *width, size_t *height);
 ncl_Pixel ncl_getScreenPixel(const ncl_ScreenState *state, int x, int y);
+void ncl_setScreenPixel(ncl_ScreenState *state, int x, int y, nn_codepoint codepoint, int fg, int bg, bool isFgPalette, bool isBgPalette);
 ncl_ScreenFlags ncl_getScreenFlags(const ncl_ScreenState *state);
 void ncl_setScreenFlags(ncl_ScreenState *state, ncl_ScreenFlags flags);
+char ncl_getScreenDepth(ncl_ScreenState *state);
+void ncl_setScreenDepth(ncl_ScreenState *state, char depth);
+nn_Exit ncl_mountKeyboard(ncl_ScreenState *state, const char *keyboardAddress);
+void ncl_unmountKeyboard(ncl_ScreenState *state, const char *keyboardAddress);
+bool ncl_hasKeyboard(ncl_ScreenState *state, const char *keyboardAddress);
+const char *ncl_getKeyboard(ncl_ScreenState *state, size_t idx);

 #endif
--- a/src/neonucleus.c
+++ b/src/neonucleus.c
@@ -1469,6 +1469,7 @@ void nn_dropComponentN(nn_Component *c, size_t n) {
 	nn_strfree(ctx, c->type);
 	nn_strfree(ctx, c->internalID);
 	nn_hashDeinit(&c->methodsMap);
+	nn_free(ctx, c, sizeof(*c));
 }

 void nn_setComponentHandler(nn_Component *c, nn_ComponentHandler *handler) {
@@ -3315,6 +3316,7 @@ static nn_Exit nn_veepromHandler(nn_EEPROMRequest *request) {
 	if(request->action == NN_EEPROM_DROP) {
 		nn_free(ctx, state->code, eeprom->size);
 		nn_free(ctx, state->data, eeprom->dataSize);
+		nn_free(ctx, state, sizeof(*state));
 		return NN_OK;
 	}
 	if(request->action == NN_EEPROM_GET) {
@@ -3384,6 +3386,12 @@ nn_Component *nn_createVEEPROM(nn_Universe *universe, const char *address, const
 	state->datalen = veeprom->datalen;
 	nn_memcpy(state->label, veeprom->label, veeprom->labellen);
 	state->labellen = veeprom->labellen;
+	if(veeprom->arch == NULL) {
+		state->archlen = 0;
+	} else {
+		state->archlen = nn_strlen(veeprom->arch);
+	}
+	nn_memcpy(state->arch, veeprom->arch, state->archlen);

 	nn_Component *c = nn_createEEPROM(universe, address, eeprom, state, nn_veepromHandler);
 	if(c == NULL) goto fail;
@@ -3767,3 +3775,53 @@ nn_Component *nn_createFilesystem(nn_Universe *universe, const char *address, co
 	nn_setComponentHandler(c, nn_fsHandler);
 	return c;
 }
+
+nn_Component *nn_createVFilesystem(nn_Universe *universe, const char *address, const nn_VFilesystem *vfs, const nn_Filesystem *fs);
+
+typedef struct nn_ScreenState {
+	nn_Context *ctx;
+	nn_ScreenConfig scrconf;
+	nn_ScreenHandler *handler;
+} nn_ScreenState;
+
+static nn_Exit nn_screenHandler(nn_ComponentRequest *req) {
+	if(req->action == NN_COMP_CHECKMETHOD) return NN_OK;
+	if(req->action == NN_COMP_SIGNAL) return NN_OK;
+	nn_Context *ctx = req->ctx;
+	nn_ScreenState *state = req->classState;
+	nn_Computer *C = req->computer;
+	nn_ScreenRequest sreq;
+	sreq.ctx = ctx;
+	sreq.state = req->state;
+	sreq.computer = C;
+	sreq.screen = &state->scrconf;
+
+	if(req->action == NN_COMP_DROP) {
+		sreq.action = NN_SCREEN_DROP;
+		state->handler(&sreq);
+		nn_free(ctx, state, sizeof(*state));
+		return NN_OK;
+	}
+
+	nn_setError(C, "screen: not yet implemented");
+	return NN_EBADCALL;
+}
+
+nn_Component *nn_createScreen(nn_Universe *universe, const char *address, const nn_ScreenConfig *scrconf, void *state, nn_ScreenHandler *handler) {
+	nn_Component *c = nn_createComponent(universe, address, "screen");
+	if(c == NULL) return NULL;
+	// TODO: methods
+	nn_Context *ctx = &universe->ctx;
+	nn_ScreenState *scrstate = nn_alloc(ctx, sizeof(*scrstate));
+	if(scrstate == NULL) {
+		nn_dropComponent(c);
+		return NULL;
+	}
+	scrstate->ctx = ctx;
+	scrstate->scrconf = *scrconf;
+	scrstate->handler = handler;
+	nn_setComponentState(c, state);
+	nn_setComponentClassState(c, scrstate);
+	nn_setComponentHandler(c, nn_screenHandler);
+	return c;
+}
--- a/src/neonucleus.h
+++ b/src/neonucleus.h
@@ -1003,7 +1003,7 @@ typedef struct nn_FSRequest {
 			bool isDirectory;
 			// in seconds. Result will be multiplied by 1000.
 			// This is because OpenOS code is garbage.
-			size_t lastModified;
+			intptr_t lastModified;
 			// size. 0 for directories.
 			size_t size;
 		} stat;
@@ -1175,6 +1175,22 @@ typedef struct nn_ScreenConfig {
 // OC has 3 tiers, NN adds a 4th one as well.
 extern const nn_ScreenConfig nn_defaultScreens[4];

+typedef enum nn_ScreenAction {
+	NN_SCREEN_DROP,
+} nn_ScreenAction;
+
+typedef struct nn_ScreenRequest {
+	nn_Context *ctx;
+	nn_Computer *computer;
+	void *state;
+	const nn_ScreenConfig *screen;
+	nn_ScreenAction action;
+} nn_ScreenRequest;
+
+typedef nn_Exit (nn_ScreenHandler)(nn_ScreenRequest *req);
+
+nn_Component *nn_createScreen(nn_Universe *universe, const char *address, const nn_ScreenConfig *scrconf, void *state, nn_ScreenHandler *handler);
+
 // GPU class

 typedef struct nn_GPU {