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author | Paweł Kołodziejski | 2006-05-23 23:43:52 +0000 |
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committer | Paweł Kołodziejski | 2006-05-23 23:43:52 +0000 |
commit | 107073537e4ad24e294e28a2a62f8d3ad33008ff (patch) | |
tree | 9eade8ff944f701d2676aa2ddd94e3585be9c813 /engines/agi/graphics.cpp | |
parent | 3a025038da6d351789d5daf29e4751678c47fed1 (diff) | |
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imported AGI engine
svn-id: r22588
Diffstat (limited to 'engines/agi/graphics.cpp')
-rw-r--r-- | engines/agi/graphics.cpp | 742 |
1 files changed, 742 insertions, 0 deletions
diff --git a/engines/agi/graphics.cpp b/engines/agi/graphics.cpp new file mode 100644 index 0000000000..fbe0228efa --- /dev/null +++ b/engines/agi/graphics.cpp @@ -0,0 +1,742 @@ +/* ScummVM - Scumm Interpreter + * Copyright (C) 2006 The ScummVM project + * + * Copyright (C) 1999-2003 Sarien Team + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * $URL$ + * $Id$ + * + */ + +#include "common/stdafx.h" + +#include "agi/agi.h" +#include "agi/graphics.h" + +namespace Agi { + +#define DEV_X0(x) ((x) << 1) +#define DEV_X1(x) (((x) << 1) + 1) +#define DEV_Y(x) (x) + +#ifndef MAX_INT +# define MAX_INT (int)((unsigned)~0 >> 1) +#endif + +static uint8 *agi_screen; +#ifdef USE_CONSOLE +static uint8 *console_screen; +#endif + +static unsigned char *screen; + +extern uint8 cur_font[]; + +/** + * 16 color RGB palette (plus 16 transparent colors). + * This array contains the 6-bit RGB values of the EGA palette exported + * to the console drivers. + */ +uint8 ega_palette[16 * 3] = { + 0x00, 0x00, 0x00, + 0x00, 0x00, 0x2a, + 0x00, 0x2a, 0x00, + 0x00, 0x2a, 0x2a, + 0x2a, 0x00, 0x00, + 0x2a, 0x00, 0x2a, + 0x2a, 0x15, 0x00, + 0x2a, 0x2a, 0x2a, + 0x15, 0x15, 0x15, + 0x15, 0x15, 0x3f, + 0x15, 0x3f, 0x15, + 0x15, 0x3f, 0x3f, + 0x3f, 0x15, 0x15, + 0x3f, 0x15, 0x3f, + 0x3f, 0x3f, 0x15, + 0x3f, 0x3f, 0x3f +}; + +/** + * 16 color amiga-ish palette. + */ +uint8 new_palette[16 * 3] = { + 0x00, 0x00, 0x00, + 0x00, 0x00, 0x3f, + 0x00, 0x2A, 0x00, + 0x00, 0x2A, 0x2A, + 0x33, 0x00, 0x00, + 0x2f, 0x1c, 0x37, + 0x23, 0x14, 0x00, + 0x2f, 0x2f, 0x2f, + 0x15, 0x15, 0x15, + 0x00, 0x2f, 0x3f, + 0x00, 0x33, 0x15, + 0x15, 0x3F, 0x3F, + 0x3f, 0x27, 0x23, + 0x3f, 0x15, 0x3f, + 0x3b, 0x3b, 0x00, + 0x3F, 0x3F, 0x3F +}; + +uint8 palette[32 * 3]; + +static uint16 cga_map[16] = { + 0x0000, /* 0 - black */ + 0x0d00, /* 1 - blue */ + 0x0b00, /* 2 - green */ + 0x0f00, /* 3 - cyan */ + 0x000b, /* 4 - red */ + 0x0b0d, /* 5 - magenta */ + 0x000d, /* 6 - brown */ + 0x0b0b, /* 7 - gray */ + 0x0d0d, /* 8 - dark gray */ + 0x0b0f, /* 9 - light blue */ + 0x0b0d, /* 10 - light green */ + 0x0f0d, /* 11 - light cyan */ + 0x0f0d, /* 12 - light red */ + 0x0f00, /* 13 - light magenta */ + 0x0f0b, /* 14 - yellow */ + 0x0f0f /* 15 - white */ +}; + +struct update_block { + int x1, y1; + int x2, y2; +}; + +static struct update_block update = { + MAX_INT, MAX_INT, 0, 0 +}; + +struct gfx_driver *gfx; /* graphics driver */ + +/* + * Layer 4: 640x480? ================== User display + * ^ + * | do_update(), put_block() + * | + * Layer 3: 640x480? ================== Framebuffer + * ^ + * | flush_block(), put_pixels() + * | + * Layer 2: 320x200 ================== AGI engine screen (console), put_pixel() + * | + * Layer 1: 160x168 ================== AGI screen + */ + +#ifdef USE_CONSOLE + +/** + * Draws a row of pixels in the output device framebuffer. + * This function adds the console layer using transparent colors if + * appropriate. + */ +static void put_pixels(const int x, const int y, const int w, uint8 *p) { + int i; + uint8 _b[GFX_WIDTH] = { 0 }; + uint8 *b, *c = NULL; + + if (console.y <= y) { + gfx_putpixels(x, y, w, p); + return; + } + + b = &_b[0]; + c = &console_screen[x + (y + GFX_HEIGHT - 1 - console.y) * GFX_WIDTH]; + + for (i = 0; i < w; i++, c++, p++) { + *b++ = *c ? *c : *p + 16; + } + + gfx_putpixels(x, y, w, _b); +} + +static void init_console() { + int i; + + /* Console */ + console.line[0] = (char *)calloc(CONSOLE_LINES_BUFFER, CONSOLE_LINE_SIZE + 1); + for (i = 1; i < CONSOLE_LINES_BUFFER; i++) + console.line[i] = console.line[i - 1] + CONSOLE_LINE_SIZE + 1; +} + +#else + +static void put_pixels(const int x, const int y, const int w, uint8 *p) { + gfx->put_pixels(x, y, w, p); +} + +static void init_console() +{ +} + +#endif /* USE_CONSOLE */ + +#define SHAKE_MAG 3 +static uint8 *shake_h, *shake_v; + +void shake_start() { + int i; + + if ((shake_h = (uint8 *)malloc(GFX_WIDTH * SHAKE_MAG)) == NULL) + return; + + if ((shake_v = (uint8 *)malloc(SHAKE_MAG * (GFX_HEIGHT - SHAKE_MAG))) == NULL) { + free(shake_h); + return; + } + + for (i = 0; i < GFX_HEIGHT - SHAKE_MAG; i++) { + memcpy(shake_v + i * SHAKE_MAG, agi_screen + i * GFX_WIDTH, SHAKE_MAG); + } + + for (i = 0; i < SHAKE_MAG; i++) { + memcpy(shake_h + i * GFX_WIDTH, agi_screen + i * GFX_WIDTH, GFX_WIDTH); + } +} + +void shake_screen(int n) { + int i; + + if (n == 0) { + for (i = 0; i < (GFX_HEIGHT - SHAKE_MAG); i++) { + memmove(&agi_screen[GFX_WIDTH * i], + &agi_screen[GFX_WIDTH * (i + SHAKE_MAG) + SHAKE_MAG], + GFX_WIDTH - SHAKE_MAG); + } + } else { + for (i = GFX_HEIGHT - SHAKE_MAG - 1; i >= 0; i--) { + memmove(&agi_screen[GFX_WIDTH * (i + SHAKE_MAG) + SHAKE_MAG], + &agi_screen[GFX_WIDTH * i], GFX_WIDTH - SHAKE_MAG); + } + } +} + +void shake_end() { + int i; + + for (i = 0; i < GFX_HEIGHT - SHAKE_MAG; i++) { + memcpy(agi_screen + i * GFX_WIDTH, shake_v + i * SHAKE_MAG, SHAKE_MAG); + } + + for (i = 0; i < SHAKE_MAG; i++) { + memcpy(agi_screen + i * GFX_WIDTH, shake_h + i * GFX_WIDTH, GFX_WIDTH); + } + + flush_block(0, 0, GFX_WIDTH - 1, GFX_HEIGHT - 1); + + free(shake_v); + free(shake_h); +} + +void put_text_character(int l, int x, int y, unsigned int c, int fg, int bg) { + int x1, y1, xx, yy, cc; + uint8 *p; + + p = cur_font + ((unsigned int)c * CHAR_LINES); + for (y1 = 0; y1 < CHAR_LINES; y1++) { + for (x1 = 0; x1 < CHAR_COLS; x1++) { + xx = x + x1; + yy = y + y1; + cc = (*p & (1 << (7 - x1))) ? fg : bg; +#ifdef USE_CONSOLE + if (l) { + console_screen[xx + yy * GFX_WIDTH] = cc; + } else +#endif + { + agi_screen[xx + yy * GFX_WIDTH] = cc; + } + } + + p++; + } + /* FIXME: we don't want this when we're writing on the + * console! + */ + flush_block(x, y, x + CHAR_COLS - 1, y + CHAR_LINES - 1); +} + +void draw_rectangle(int x1, int y1, int x2, int y2, int c) { + int y, w, h; + uint8 *p0; + + if (x1 >= GFX_WIDTH) + x1 = GFX_WIDTH - 1; + if (y1 >= GFX_HEIGHT) + y1 = GFX_HEIGHT - 1; + if (x2 >= GFX_WIDTH) + x2 = GFX_WIDTH - 1; + if (y2 >= GFX_HEIGHT) + y2 = GFX_HEIGHT - 1; + + w = x2 - x1 + 1; + h = y2 - y1 + 1; + p0 = &agi_screen[x1 + y1 * GFX_WIDTH]; + for (y = 0; y < h; y++) { + memset(p0, c, w); + p0 += GFX_WIDTH; + } +} + +static void draw_frame(int x1, int y1, int x2, int y2, int c1, int c2) { + int y, w; + uint8 *p0; + + /* top line */ + w = x2 - x1 + 1; + p0 = &agi_screen[x1 + y1 * GFX_WIDTH]; + memset(p0, c1, w); + + /* bottom line */ + p0 = &agi_screen[x1 + y2 * GFX_WIDTH]; + memset(p0, c2, w); + + /* side lines */ + for (y = y1; y <= y2; y++) { + agi_screen[x1 + y * GFX_WIDTH] = c1; + agi_screen[x2 + y * GFX_WIDTH] = c2; + } +} + +void draw_box(int x1, int y1, int x2, int y2, int colour1, int colour2, int m) { + x1 += m; + y1 += m; + x2 -= m; + y2 -= m; + + draw_rectangle(x1, y1, x2, y2, colour1); + draw_frame(x1 + 2, y1 + 2, x2 - 2, y2 - 2, colour2, colour2); + flush_block(x1, y1, x2, y2); +} + +void print_character(int x, int y, char c, int fg, int bg) { + x *= CHAR_COLS; + y *= CHAR_LINES; + + put_text_character(0, x, y, c, fg, bg); + // redundant! already inside put_text_character! + // flush_block (x, y, x + CHAR_COLS - 1, y + CHAR_LINES - 1); +} + +/** + * Draw button + * @param x x coordinate of the button + * @param y y coordinate of the button + * @param a set if the button has focus + * @param p set if the button is pressed + */ +void draw_button(int x, int y, char *s, int a, int p) { + int len = strlen(s); + int x1, y1, x2, y2; + + x1 = x - 3; + y1 = y - 3; + x2 = x + CHAR_COLS * len + 2; + y2 = y + CHAR_LINES + 2; + + while (*s) { + put_text_character(0, x + (!!p), y + (!!p), *s++, + a ? 15 : 0, a ? 0 : 15); + x += CHAR_COLS; + } + + x1 -= 2; + y1 -= 2; + x2 += 2; + y2 += 2; + + flush_block(x1, y1, x2, y2); +} + +#ifdef USE_MOUSE +int test_button(int x, int y, char *s) { + int len = strlen(s); + int x1, y1, x2, y2; + + x1 = x - 3; + y1 = y - 3; + x2 = x + CHAR_COLS * len + 2; + y2 = y + CHAR_LINES + 2; + + if ((int)mouse.x >= x1 && (int)mouse.y >= y1 + && (int)mouse.x <= x2 && (int)mouse.y <= y2) + return true; + + return false; +} +#endif + +void put_block(int x1, int y1, int x2, int y2) { + gfx_putblock(x1, y1, x2, y2); +} + +void put_screen() { + put_block(0, 0, GFX_WIDTH - 1, GFX_HEIGHT - 1); +} + +void poll_timer() { + agi_timer_low(); +} + +int get_key() { + return agi_get_keypress_low(); +} + +int keypress() { + return agi_is_keypress_low(); +} + +/* + * Public functions + */ + +/** + * Initialize the color palette + * This function initializes the color palette using the specified 16-color + * RGB palette and creates 16 extra palette entries with translucent colors + * for the interpreter console. + * @param p A pointer to the 16-color RGB palette. + */ +void init_palette(uint8 *p) { + int i; + + for (i = 0; i < 48; i++) { + palette[i] = p[i]; + palette[i + 48] = (p[i] + 0x30) >> 2; + } +} + +void gfx_set_palette() { + int i; + byte pal[32 * 4]; + + for (i = 0; i < 32; i++) { + pal[i * 4 + 0] = palette[i * 3 + 0] << 2; + pal[i * 4 + 1] = palette[i * 3 + 1] << 2; + pal[i * 4 + 2] = palette[i * 3 + 2] << 2; + pal[i * 4 + 3] = 0; + } + g_system->setPalette(pal, 0, 32); +} + +void gfx_putpixels(int x, int y, int w, uint8 *p) { + uint8 *p0 = screen + x + y * 320; + memcpy(p0, p, w); +} + +/* put a block onto the screen */ +void gfx_putblock(int x1, int y1, int x2, int y2) { + if (x1 >= GFX_WIDTH) + x1 = GFX_WIDTH - 1; + if (y1 >= GFX_HEIGHT) + y1 = GFX_HEIGHT - 1; + if (x2 >= GFX_WIDTH) + x2 = GFX_WIDTH - 1; + if (y2 >= GFX_HEIGHT) + y2 = GFX_HEIGHT - 1; + + // force full update until fix wrong partial updates + g_system->copyRectToScreen(screen, 320, 0, 0, 320, 200); + //g_system->copyRectToScreen(screen, 320, x1, y1, x2 - x1 + 1, y2 - y1 + 1); + //g_system->updateScreen(); +} + +static const byte mouseCursorArrow[] = { + 0x00, 0x00, 0x40, 0x00, 0x60, 0x00, 0x70, 0x00, + 0x78, 0x00, 0x7C, 0x00, 0x7E, 0x00, 0x7F, 0x00, + 0x7F, 0x80, 0x7C, 0x00, 0x6C, 0x00, 0x46, 0x00, + 0x06, 0x00, 0x03, 0x00, 0x03, 0x00, 0x00, 0x00, + 0xC0, 0x00, 0xE0, 0x00, 0xF0, 0x00, 0xF8, 0x00, + 0xFC, 0x00, 0xFE, 0x00, 0xFF, 0x00, 0xFF, 0x80, + 0xFF, 0xC0, 0xFF, 0xC0, 0xFE, 0x00, 0xFF, 0x00, + 0xCF, 0x00, 0x07, 0x80, 0x07, 0x80, 0x03, 0x80 +}; + +/** + * Initialize graphics device. + * + * @see deinit_video() + */ +int init_video() { + if (opt.egapal) + init_palette(ega_palette); + else + init_palette(new_palette); + + init_console(); + + if ((agi_screen = (uint8 *)calloc(GFX_WIDTH, GFX_HEIGHT)) == NULL) + return err_NotEnoughMemory; + +#ifdef USE_CONSOLE + if ((console_screen = (uint8 *)calloc(GFX_WIDTH, GFX_HEIGHT)) == NULL) { + free(agi_screen); + return err_NotEnoughMemory; + } +#endif + + gfx_set_palette(); + + byte mouseCursor[16 * 16]; + const byte *src = mouseCursorArrow; + for (int i = 0; i < 32; ++i) { + int offs = i * 8; + for (byte mask = 0x80; mask != 0; mask >>= 1) { + if (src[0] & mask) { + mouseCursor[offs] = 2; + } else if (src[32] & mask) { + mouseCursor[offs] = 0; + } else { + mouseCursor[offs] = 0xFF; + } + ++offs; + } + ++src; + } + g_system->setMouseCursor(mouseCursor, 16, 16, 1, 1); + + return err_OK; +} + +/** + * Deinitialize graphics device. + * + * @see init_video() + */ +int deinit_video() { + free(agi_screen); +#ifdef USE_CONSOLE + free(console_screen); +#endif + + return err_OK; +} + +int init_machine() { + screen = (unsigned char *)malloc(320 * 200); + clock_count = 0; + clock_ticks = 0; + + return err_OK; +} + +int deinit_machine() { + free(screen); + + return err_OK; +} + +/** + * Write pixels on the output device. + * This function writes a row of pixels on the output device. Only the + * lower 4 bits of each pixel in the row will be used, making this + * function suitable for use with rows from the AGI screen. + * @param x x coordinate of the row start (AGI coord.) + * @param y y coordinate of the row start (AGI coord.) + * @param n number of pixels in the row + * @param p pointer to the row start in the AGI screen + */ +void put_pixels_a(int x, int y, int n, uint8 *p) { + if (opt.cgaemu) { + for (x *= 2; n--; p++, x += 2) { + register uint16 q = (cga_map[(*p & 0xf0) >> 4] << 4) | cga_map[*p & 0x0f]; +#ifdef USE_CONSOLE + if (debug_.priority) + q >>= 4; +#endif + *(uint16 *)&agi_screen[x + y * GFX_WIDTH] = q & 0x0f0f; + } + } else { + for (x *= 2; n--; p++, x += 2) { + register uint16 q = ((uint16) * p << 8) | *p; +#ifdef USE_CONSOLE + if (debug_.priority) + q >>= 4; +#endif + *(uint16 *)&agi_screen[x + y * GFX_WIDTH] = q & 0x0f0f; + } + } +} + +#ifdef USE_HIRES + +void put_pixels_hires(int x, int y, int n, uint8 *p) { + //y += CHAR_LINES; + for (; n--; p++, x++) { + uint8 q = *p; +#ifdef USE_CONSOLE + if (debug_.priority) + q >>= 4; +#endif + agi_screen[x + y * GFX_WIDTH] = q & 0x0f; + } +} + +#endif + +/** + * Schedule blocks for blitting on the output device. + * This function gets the coordinates of a block in the AGI screen and + * schedule it to be updated in the output device. + * @param x1 x coordinate of the upper left corner of the block (AGI coord.) + * @param y1 y coordinate of the upper left corner of the block (AGI coord.) + * @param x2 x coordinate of the lower right corner of the block (AGI coord.) + * @param y2 y coordinate of the lower right corner of the block (AGI coord.) + * + * @see do_update() + */ +void schedule_update(int x1, int y1, int x2, int y2) { + if (x1 < update.x1) + update.x1 = x1; + if (y1 < update.y1) + update.y1 = y1; + if (x2 > update.x2) + update.x2 = x2; + if (y2 > update.y2) + update.y2 = y2; +} + +/** + * Update scheduled blocks on the output device. + * This function exposes the blocks scheduled for updating to the output + * device. Blocks can be scheduled at any point of the AGI cycle. + * + * @see schedule_update() + */ +void do_update() { + if (update.x1 <= update.x2 && update.y1 <= update.y2) { + gfx_putblock(update.x1, update.y1, update.x2, update.y2); + } + + /* reset update block variables */ + update.x1 = MAX_INT; + update.y1 = MAX_INT; + update.x2 = 0; + update.y2 = 0; +} + +/** + * Updates a block of the framebuffer with contents of the AGI engine screen. + * This function updates a block in the output device with the contents of + * the AGI engine screen, handling console transparency. + * @param x1 x coordinate of the upper left corner of the block + * @param y1 y coordinate of the upper left corner of the block + * @param x2 x coordinate of the lower right corner of the block + * @param y2 y coordinate of the lower right corner of the block + * + * @see flush_block_a() + */ +void flush_block(int x1, int y1, int x2, int y2) { + int y, w; + uint8 *p0; + + schedule_update(x1, y1, x2, y2); + + p0 = &agi_screen[x1 + y1 * GFX_WIDTH]; + w = x2 - x1 + 1; + + for (y = y1; y <= y2; y++) { + put_pixels(x1, y, w, p0); + p0 += GFX_WIDTH; + } +} + +/** + * Updates a block of the framebuffer receiving AGI picture coordinates. + * @param x1 x AGI picture coordinate of the upper left corner of the block + * @param y1 y AGI picture coordinate of the upper left corner of the block + * @param x2 x AGI picture coordinate of the lower right corner of the block + * @param y2 y AGI picture coordinate of the lower right corner of the block + * + * @see flush_block() + */ +void flush_block_a(int x1, int y1, int x2, int y2) { + //y1 += 8; + //y2 += 8; + flush_block(DEV_X0(x1), DEV_Y(y1), DEV_X1(x2), DEV_Y(y2)); +} + +/** + * Updates the framebuffer with contents of the AGI engine screen (console-aware). + * This function updates the output device with the contents of the AGI + * screen, handling console transparency. + */ +void flush_screen() { + flush_block(0, 0, GFX_WIDTH - 1, GFX_HEIGHT - 1); +} + +/** + * Clear the output device screen (console-aware). + * This function clears the output device screen and updates the + * output device. Contents of the AGI screen are left untouched. This + * function can be used to simulate a switch to a text mode screen in + * a graphic-only device. + * @param c color to clear the screen + */ +void clear_screen(int c) { + memset(agi_screen, c, GFX_WIDTH * GFX_HEIGHT); + flush_screen(); +} + +#ifdef USE_CONSOLE +/** + * Clear the console screen. + * This function clears the top n lines of the console screen. + * @param n number of lines to clear (in pixels) + */ +void clear_console_screen(int n) { + memset(console_screen + n * GFX_WIDTH, 0, (GFX_HEIGHT - n) * GFX_WIDTH); +} +#endif + +/** + * Save a block of the AGI engine screen + */ +void save_block(int x1, int y1, int x2, int y2, uint8 *b) { + uint8 *p0; + int w, h; + + p0 = &agi_screen[x1 + GFX_WIDTH * y1]; + w = x2 - x1 + 1; + h = y2 - y1 + 1; + while (h--) { + memcpy(b, p0, w); + b += w; + p0 += GFX_WIDTH; + } +} + +/** + * Restore a block of the AGI engine screen + */ +void restore_block(int x1, int y1, int x2, int y2, uint8 *b) { + uint8 *p0; + int w, h; + + p0 = &agi_screen[x1 + GFX_WIDTH * y1]; + w = x2 - x1 + 1; + h = y2 - y1 + 1; + while (h--) { + memcpy(p0, b, w); + b += w; + p0 += GFX_WIDTH; + } + flush_block(x1, y1, x2, y2); +} + +} // End of namespace Agi |