/***************************************************************************** * Copyright (c) 2014 Ted John, Peter Hill, Duncan Frost * OpenRCT2, an open source clone of Roller Coaster Tycoon 2. * * This file is part of OpenRCT2. * * OpenRCT2 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 3 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, see . *****************************************************************************/ #include "../addresses.h" #include "../common.h" #include "../localisation/localisation.h" #include "../interface/window.h" #include "../platform/platform.h" #include "../object.h" #include "../world/water.h" #include "drawing.h" // HACK These were originally passed back through registers int gLastDrawStringX; int gLastDrawStringY; uint8* _screenDirtyBlocks = NULL; int _screenDirtyBlocksSize = 0; #define MAX_RAIN_PIXELS 0xFFFE uint32 rainPixels[MAX_RAIN_PIXELS]; //Originally 0x9ABE0C, 12 elements from 0xF3 are the peep top colour, 12 elements from 0xCA are peep trouser colour const uint8 peep_palette[0x100] = { 0x00, 0xF3, 0xF4, 0xF5, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x3B, 0x3C, 0x3D, 0x3E, 0x3F, 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F, 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x5B, 0x5C, 0x5D, 0x5E, 0x5F, 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A, 0x7B, 0x7C, 0x7D, 0x7E, 0x7F, 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8A, 0x8B, 0x8C, 0x8D, 0x8E, 0x8F, 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9A, 0x9B, 0x9C, 0x9D, 0x9E, 0x9F, 0xA0, 0xA1, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, 0xA8, 0xA9, 0xAA, 0xAB, 0xAC, 0xAD, 0xAE, 0xAF, 0xB0, 0xB1, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6, 0xB7, 0xB8, 0xB9, 0xBA, 0xBB, 0xBC, 0xBD, 0xBE, 0xBF, 0xC0, 0xC1, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA, 0xCB, 0xCC, 0xCD, 0xCE, 0xCF, 0xD0, 0xD1, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9, 0xDA, 0xDB, 0xDC, 0xDD, 0xDE, 0xDF, 0xE0, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7, 0xE8, 0xE9, 0xEA, 0xEB, 0xEC, 0xED, 0xEE, 0xEF, 0xF0, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, 0xF8, 0xF9, 0xFA, 0xFB, 0xFC, 0xFD, 0xFE, 0xFF }; //Originally 0x9ABE04 uint8 text_palette[0x8] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; // Previously 0x97FCBC use it to get the correct palette from g1_elements const uint16 palette_to_g1_offset[] = { 0x1333, 0x1334, 0x1335, 0x1336, 0x1337, 0x1338, 0x1339, 0x133A, 0x133B, 0x133C, 0x133D, 0x133E, 0x133F, 0x1340, 0x1341, 0x1342, 0x1343, 0x1344, 0x1345, 0x1346, 0x1347, 0x1348, 0x1349, 0x134A, 0x134B, 0x134C, 0x134D, 0x134E, 0x134F, 0x1350, 0x1351, 0x1352, 0x1353, 0x0C1C, 0x0C1D, 0x0C1E, 0x0C1F, 0x0C20, 0x0C22, 0x0C23, 0x0C24, 0x0C25, 0x0C26, 0x0C21, 0x1354, 0x1355, 0x1356, 0x1357, 0x1358, 0x1359, 0x135A, 0x135B, 0x135C, 0x135D, 0x135E, 0x135F, 0x1360, 0x1361, 0x1362, 0x1363, 0x1364, 0x1365, 0x1366, 0x1367, 0x1368, 0x1369, 0x136A, 0x136B, 0x136C, 0x136D, 0x136E, 0x136F, 0x1370, 0x1371, 0x1372, 0x1373, 0x1374, 0x1375, 0x1376, 0x1377, 0x1378, 0x1379, 0x137A, 0x137B, 0x137C, 0x137D, 0x137E, 0x137F, 0x1380, 0x1381, 0x1382, 0x1383, 0x1384, 0x1385, 0x1386, 0x1387, 0x1388, 0x1389, 0x138A, 0x138B, 0x138C, 0x138D, 0x138E, 0x138F, 0x1390, 0x1391, 0x1392, 0x1393, 0x1394, 0x1395, 0x1396, 0x1397, 0x1398, 0x1399, 0x139A, 0x139B, 0x139C, 0x139D, 0x139E, 0x139F, 0x13A0, 0x13A1, 0x13A2, 0x13A3, 0x13A4, 0x13A5, 0x13A6, 0x13A7, 0x13A8, 0x13A9, 0x13AA, 0x13AB, 0x13AC, 0x13AD, 0x13AE, 0x13AF, 0x13B0, 0x13B1, 0x13B2, 0x13B3, 0x13B4, 0x13B5, 0x13B6, 0x13B7, }; static void gfx_draw_dirty_blocks(int x, int y, int columns, int rows); /** * Clears the screen with the specified colour. * rct2: 0x00678A9F */ void gfx_clear(rct_drawpixelinfo *dpi, int colour) { int y, w, h; uint8* ptr; w = dpi->width >> dpi->zoom_level; h = dpi->height >> dpi->zoom_level; ptr = dpi->bits; for (y = 0; y < h; y++) { memset(ptr, colour, w); ptr += w + dpi->pitch; } } void gfx_draw_pixel(rct_drawpixelinfo *dpi, int x, int y, int colour) { gfx_fill_rect(dpi, x, y, x, y, colour); } /** * * rct2: 0x00683854 * a1 (ebx) * product (cl) */ void gfx_transpose_palette(int pal, unsigned char product) { rct_g1_element g1 = g1Elements[pal]; int width = g1.width; int x = g1.x_offset; uint8* dest_pointer = (uint8*)&(RCT2_ADDRESS(RCT2_ADDRESS_PALETTE, uint8)[x * 4]); uint8* source_pointer = g1.offset; for (; width > 0; width--) { dest_pointer[0] = (source_pointer[0] * product) >> 8; dest_pointer[1] = (source_pointer[1] * product) >> 8; dest_pointer[2] = (source_pointer[2] * product) >> 8; source_pointer += 3; dest_pointer += 4; } platform_update_palette((uint8*)RCT2_ADDRESS_PALETTE, 10, 236); } /** * * rct2: 0x006837E3 */ void load_palette(){ rct_water_type* water_type = (rct_water_type*)object_entry_groups[OBJECT_TYPE_WATER].chunks[0]; uint32 palette = 0x5FC; if ((sint32)water_type != -1){ palette = water_type->image_id; } rct_g1_element g1 = g1Elements[palette]; int width = g1.width; int x = g1.x_offset; uint8* dest_pointer = (uint8*)&(RCT2_ADDRESS(RCT2_ADDRESS_PALETTE, uint8)[x * 4]); uint8* source_pointer = g1.offset; for (; width > 0; width--) { dest_pointer[0] = source_pointer[0]; dest_pointer[1] = source_pointer[1]; dest_pointer[2] = source_pointer[2]; source_pointer += 3; dest_pointer += 4; } platform_update_palette((uint8*)RCT2_ADDRESS_PALETTE, 10, 236); } /** * * rct2: 0x006ED7E5 */ void gfx_invalidate_screen() { int width = RCT2_GLOBAL(RCT2_ADDRESS_SCREEN_WIDTH, uint16); int height = RCT2_GLOBAL(RCT2_ADDRESS_SCREEN_HEIGHT, uint16); gfx_set_dirty_blocks(0, 0, width, height); } uint8* gfx_get_dirty_blocks() { int size = RCT2_GLOBAL(RCT2_ADDRESS_DIRTY_BLOCK_COLUMNS, uint32) * RCT2_GLOBAL(RCT2_ADDRESS_DIRTY_BLOCK_ROWS, uint32); if (_screenDirtyBlocksSize != size) { if (_screenDirtyBlocks) { _screenDirtyBlocks = realloc(_screenDirtyBlocks, size); } else { _screenDirtyBlocks = malloc(size); } _screenDirtyBlocksSize = size; } return _screenDirtyBlocks; } /** * * rct2: 0x006E732D * left (ax) * top (bx) * right (dx) * bottom (bp) */ void gfx_set_dirty_blocks(sint16 left, sint16 top, sint16 right, sint16 bottom) { int x, y; uint8 *screenDirtyBlocks = gfx_get_dirty_blocks(); left = max(left, 0); top = max(top, 0); right = min(right, RCT2_GLOBAL(RCT2_ADDRESS_SCREEN_WIDTH, uint16)); bottom = min(bottom, RCT2_GLOBAL(RCT2_ADDRESS_SCREEN_HEIGHT, uint16)); if (left >= right) return; if (top >= bottom) return; right--; bottom--; left >>= RCT2_GLOBAL(0x009ABDF0, sint8); right >>= RCT2_GLOBAL(0x009ABDF0, sint8); top >>= RCT2_GLOBAL(0x009ABDF1, sint8); bottom >>= RCT2_GLOBAL(0x009ABDF1, sint8); for (y = top; y <= bottom; y++) for (x = left; x <= right; x++) screenDirtyBlocks[y * RCT2_GLOBAL(RCT2_ADDRESS_DIRTY_BLOCK_COLUMNS, uint32) + x] = 0xFF; } /** * * rct2: 0x006E73BE */ void gfx_draw_all_dirty_blocks() { unsigned int x, y, xx, yy, columns, rows; uint8 *screenDirtyBlocks = gfx_get_dirty_blocks(); for (x = 0; x < RCT2_GLOBAL(RCT2_ADDRESS_DIRTY_BLOCK_COLUMNS, uint32); x++) { for (y = 0; y < RCT2_GLOBAL(RCT2_ADDRESS_DIRTY_BLOCK_ROWS, uint32); y++) { if (screenDirtyBlocks[y * RCT2_GLOBAL(RCT2_ADDRESS_DIRTY_BLOCK_COLUMNS, uint32) + x] == 0) continue; // Determine columns for (xx = x; xx < RCT2_GLOBAL(RCT2_ADDRESS_DIRTY_BLOCK_COLUMNS, uint32); xx++) if (screenDirtyBlocks[y * RCT2_GLOBAL(RCT2_ADDRESS_DIRTY_BLOCK_COLUMNS, uint32) + xx] == 0) break; columns = xx - x; // Check rows for (yy = y; yy < RCT2_GLOBAL(RCT2_ADDRESS_DIRTY_BLOCK_ROWS, uint32); yy++) for (xx = x; xx < x + columns; xx++) if (screenDirtyBlocks[yy * RCT2_GLOBAL(RCT2_ADDRESS_DIRTY_BLOCK_COLUMNS, uint32) + xx] == 0) goto endRowCheck; endRowCheck: rows = yy - y; gfx_draw_dirty_blocks(x, y, columns, rows); } } } static void gfx_draw_dirty_blocks(int x, int y, int columns, int rows) { int left, top, right, bottom; uint8 *screenDirtyBlocks = gfx_get_dirty_blocks(); // Unset dirty blocks for (top = y; top < y + rows; top++) for (left = x; left < x + columns; left++) screenDirtyBlocks[top * RCT2_GLOBAL(RCT2_ADDRESS_DIRTY_BLOCK_COLUMNS, uint32) + left] = 0; // Determine region in pixels left = max(0, x * RCT2_GLOBAL(RCT2_ADDRESS_DIRTY_BLOCK_WIDTH, uint16)); top = max(0, y * RCT2_GLOBAL(RCT2_ADDRESS_DIRTY_BLOCK_HEIGHT, uint16)); right = min(RCT2_GLOBAL(RCT2_ADDRESS_SCREEN_WIDTH, uint16), left + (columns * RCT2_GLOBAL(RCT2_ADDRESS_DIRTY_BLOCK_WIDTH, uint16))); bottom = min(RCT2_GLOBAL(RCT2_ADDRESS_SCREEN_HEIGHT, uint16), top + (rows * RCT2_GLOBAL(RCT2_ADDRESS_DIRTY_BLOCK_HEIGHT, uint16))); if (right <= left || bottom <= top) return; // Draw region gfx_redraw_screen_rect(left, top, right, bottom); } /** * * rct2: 0x006E7499 * left (ax) * top (bx) * right (dx) * bottom (bp) */ void gfx_redraw_screen_rect(short left, short top, short right, short bottom) { rct_window* w; rct_drawpixelinfo *screenDPI = RCT2_ADDRESS(RCT2_ADDRESS_SCREEN_DPI, rct_drawpixelinfo); rct_drawpixelinfo *windowDPI = RCT2_ADDRESS(RCT2_ADDRESS_WINDOW_DPI, rct_drawpixelinfo); windowDPI->bits = screenDPI->bits + left + ((screenDPI->width + screenDPI->pitch) * top); windowDPI->x = left; windowDPI->y = top; windowDPI->width = right - left; windowDPI->height = bottom - top; windowDPI->pitch = screenDPI->width + screenDPI->pitch + left - right; for (w = g_window_list; w < RCT2_GLOBAL(RCT2_ADDRESS_NEW_WINDOW_PTR, rct_window*); w++) { if (w->flags & WF_TRANSPARENT) continue; if (right <= w->x || bottom <= w->y) continue; if (left >= w->x + w->width || top >= w->y + w->height) continue; window_draw(w, left, top, right, bottom); } } /* * * rct2: 0x006EE53B * left (ax) * width (bx) * top (cx) * height (dx) * drawpixelinfo (edi) */ bool clip_drawpixelinfo(rct_drawpixelinfo *dst, rct_drawpixelinfo *src, int x, int y, int width, int height) { int right = x + width; int bottom = y + height; dst->bits = src->bits; dst->x = src->x; dst->y = src->y; dst->width = src->width; dst->height = src->height; dst->pitch = src->pitch; dst->zoom_level = 0; if (x > dst->x) { uint16 clippedFromLeft = x - dst->x; dst->width -= clippedFromLeft; dst->x = x; dst->pitch += clippedFromLeft; dst->bits += clippedFromLeft; } int stickOutWidth = dst->x + dst->width - right; if (stickOutWidth > 0) { dst->width -= stickOutWidth; dst->pitch += stickOutWidth; } if (y > dst->y) { uint16 clippedFromTop = y - dst->y; dst->height -= clippedFromTop; dst->y = y; uint32 bitsPlus = (dst->pitch + dst->width) * clippedFromTop; dst->bits += bitsPlus; } int bp = dst->y + dst->height - bottom; if (bp > 0) { dst->height -= bp; } if (dst->width > 0 && dst->height > 0) { dst->x -= x; dst->y -= y; return true; } return false; } /*** * * rct2: 0x00684027 * * ebp used to be a parameter but it is always zero * left : eax * top : ebx * width : ecx * height : edx * x_start: edi * y_start: esi */ void gfx_draw_rain(int left, int top, int width, int height, sint32 x_start, sint32 y_start){ uint8* pattern = RCT2_GLOBAL(RCT2_ADDRESS_RAIN_PATTERN, uint8*); uint8 pattern_x_space = *pattern++; uint8 pattern_y_space = *pattern++; uint8 pattern_start_x_offset = x_start % pattern_x_space; uint8 pattern_start_y_offset = y_start % pattern_y_space; rct_drawpixelinfo* dpi = RCT2_ADDRESS(RCT2_ADDRESS_SCREEN_DPI, rct_drawpixelinfo); uint32 pixel_offset = (dpi->pitch + dpi->width)*top + left; uint8 pattern_y_pos = pattern_start_y_offset % pattern_y_space; //Stores the colours of changed pixels uint32* pixel_store = rainPixels; pixel_store += RCT2_GLOBAL(RCT2_ADDRESS_NO_RAIN_PIXELS, uint32); for (; height != 0; height--){ uint8 pattern_x = pattern[pattern_y_pos * 2]; if (pattern_x != 0xFF){ if (RCT2_GLOBAL(RCT2_ADDRESS_NO_RAIN_PIXELS, uint32) < (MAX_RAIN_PIXELS - (uint32)width)){ int final_pixel_offset = width + pixel_offset; int x_pixel_offset = pixel_offset; x_pixel_offset += ((uint8)(pattern_x - pattern_start_x_offset)) % pattern_x_space; uint8 pattern_pixel = pattern[pattern_y_pos * 2 + 1]; for (; x_pixel_offset < final_pixel_offset; x_pixel_offset += pattern_x_space){ uint8 current_pixel = dpi->bits[x_pixel_offset]; dpi->bits[x_pixel_offset] = pattern_pixel; RCT2_GLOBAL(RCT2_ADDRESS_NO_RAIN_PIXELS, uint32)++; //Store colour and position *pixel_store++ = (x_pixel_offset << 8) | current_pixel; } } } pixel_offset += dpi->pitch + dpi->width; pattern_y_pos++; pattern_y_pos %= pattern_y_space; } } /** * * rct2: 0x006843DC */ void redraw_rain() { if (RCT2_GLOBAL(0x009ABDF2, uint32) != 0) { int rain_no_pixels = RCT2_GLOBAL(RCT2_ADDRESS_NO_RAIN_PIXELS, uint32); if (rain_no_pixels == 0) { return; } rct_window *window = window_get_main(); uint32 numPixels = window->width * window->height; uint32 *rain_pixels = rainPixels; if (rain_pixels) { uint8 *screen_pixels = RCT2_ADDRESS(RCT2_ADDRESS_SCREEN_DPI, rct_drawpixelinfo)->bits; for (int i = 0; i < rain_no_pixels; i++) { uint32 pixel = rain_pixels[i]; //HACK if (pixel >> 8 > numPixels) { log_verbose("Pixel error, skipping rain draw in this frame"); break; } screen_pixels[pixel >> 8] = pixel & 0xFF; } RCT2_GLOBAL(0x009E2C78, uint32) = 1; } } RCT2_GLOBAL(RCT2_ADDRESS_NO_RAIN_PIXELS, uint32) = 0; } void gfx_invalidate_pickedup_peep() { if (RCT2_GLOBAL(0x009ABDF2, uint32) != 0) { int sprite = RCT2_GLOBAL(RCT2_ADDRESS_PICKEDUP_PEEP_IMAGE, sint32); if (sprite != -1) { sprite = sprite & 0x7FFFF; rct_g1_element *g1_elements = &g1Elements[sprite]; int left = RCT2_GLOBAL(RCT2_ADDRESS_PICKEDUP_PEEP_X, sint16) + g1_elements->x_offset; int top = RCT2_GLOBAL(RCT2_ADDRESS_PICKEDUP_PEEP_Y, sint16) + g1_elements->y_offset; int right = left + g1_elements->width; int bottom = top + g1_elements->height; gfx_set_dirty_blocks(left, top, right, bottom); } } } void gfx_draw_pickedup_peep() { if (RCT2_GLOBAL(0x009ABDF2, uint8) == 0) return; // Draw picked-up peep if (RCT2_GLOBAL(RCT2_ADDRESS_PICKEDUP_PEEP_IMAGE, uint32) != 0xFFFFFFFF) { gfx_draw_sprite( (rct_drawpixelinfo*)RCT2_ADDRESS_SCREEN_DPI, RCT2_GLOBAL(RCT2_ADDRESS_PICKEDUP_PEEP_IMAGE, uint32), RCT2_GLOBAL(RCT2_ADDRESS_PICKEDUP_PEEP_X, sint16), RCT2_GLOBAL(RCT2_ADDRESS_PICKEDUP_PEEP_Y, sint16), 0 ); } } /** * Draws the given colour image masked out by the given mask image. This can currently only cope with bitmap formatted mask and * colour images. Presumebly the original game never used RLE images for masking. Colour 0 represents transparent. * * rct2: 0x00681DE2 */ void gfx_draw_sprite_raw_masked(rct_drawpixelinfo *dpi, int x, int y, int maskImage, int colourImage) { int left, top, right, bottom, width, height; rct_g1_element *imgMask = &g1Elements[maskImage & 0x7FFFF]; rct_g1_element *imgColour = &g1Elements[colourImage & 0x7FFFF]; assert(imgMask->flags & 1); assert(imgColour->flags & 1); if (dpi->zoom_level != 0) { // TODO implement other zoom levels (probably not used though) assert(false); return; } width = min(imgMask->width, imgColour->width); height = min(imgMask->height, imgColour->height); x += imgMask->x_offset; y += imgMask->y_offset; left = max(dpi->x, x); top = max(dpi->y, y); right = min(dpi->x + dpi->width, x + width); bottom = min(dpi->y + dpi->height, y + height); width = right - left; height = bottom - top; if (width < 0 || height < 0) return; int skipX = left - x; int skipY = top - y; uint8 *maskSrc = imgMask->offset + (skipY * imgMask->width) + skipX; uint8 *colourSrc = imgColour->offset + (skipY * imgColour->width) + skipX; uint8 *dst = dpi->bits + (left - dpi->x) + ((top - dpi->y) * (dpi->width + dpi->pitch)); int maskWrap = imgMask->width - width; int colourWrap = imgColour->width - width; int dstWrap = ((dpi->width + dpi->pitch) - width); for (int y = top; y < bottom; y++) { for (int x = left; x < right; x++) { uint8 colour = (*colourSrc) & (*maskSrc); if (colour != 0) { *dst = colour; } maskSrc++; colourSrc++; dst++; } maskSrc += maskWrap; colourSrc += colourWrap; dst += dstWrap; } }