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https://github.com/kichikuou/xsystem35-sdl2.git
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127 lines
3.6 KiB
C
127 lines
3.6 KiB
C
/*
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* sprite_draw.c: スプライト再描画各種
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*
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* Copyright (C) 1997-1998 Masaki Chikama (Wren) <chikama@kasumi.ipl.mech.nagoya-u.ac.jp>
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* 1998- <masaki-c@is.aist-nara.ac.jp>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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/* $Id: sprite_draw.c,v 1.4 2004/10/31 04:18:02 chikama Exp $ */
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#include "config.h"
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#include <assert.h>
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#include <stdio.h>
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#include <string.h>
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#include <SDL.h>
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#include "portab.h"
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#include "system.h"
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#include "ags.h"
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#include "sact.h"
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#include "sprite.h"
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// alphamapにしたがって、alpha値が0より大きいところを指定のdepthとする
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static void fill_dmap_mask(SDL_Surface *src, int sx, int sy, int dx ,int dy, int w, int h, uint16_t val) {
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uint8_t *sp, *dp;
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int x, y;
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assert(src->format->Amask == 0xff000000);
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dp = PIXEL_AT(sact.dmap, dx, dy);
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sp = ALPHA_AT(src, sx, sy);
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for (y = 0; y < h; y++) {
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uint8_t *yls = sp + y * src->pitch;
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uint16_t *yld = (uint16_t *)(dp + y * sact.dmap->pitch);
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for (x = 0; x < w; x++) {
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if (*yls > 0) *yld = val;
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yls += 4; yld++;
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}
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}
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}
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/*
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指定の sprite (の現在のCG)を surface0 に書く
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@param sp: 描画するスプライト
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*/
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void sp_draw(sprite_t *sp) {
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if (sp == NULL) return;
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cginfo_t *cg = sp->curcg;
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if (cg == NULL) return;
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if (cg->sf == NULL) return;
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// 更新領域の確定
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SDL_Rect cg_rect = {0, 0, cg->sf->w, cg->sf->h};
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int sx = 0;
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int sy = 0;
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int dx = sp->cur.x;
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int dy = sp->cur.y;
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int w = cg->sf->w;
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int h = cg->sf->h;
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if (!ags_clipCopyRect(&cg_rect, &sact.updaterect, &sx, &sy, &dx, &dy, &w, &h)) {
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return;
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}
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if (SDL_ISPIXELFORMAT_ALPHA(cg->sf->format->format) || sp->blendrate < 255) {
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SDL_SetSurfaceBlendMode(cg->sf, SDL_BLENDMODE_BLEND);
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SDL_SetSurfaceAlphaMod(cg->sf, sp->blendrate);
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} else {
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SDL_SetSurfaceBlendMode(cg->sf, SDL_BLENDMODE_NONE);
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}
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SDL_BlitSurface(cg->sf, &(SDL_Rect){sx, sy, w, h}, main_surface, &(SDL_Rect){dx, dy, w, h});
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SACT_DEBUG("do update no=%d, sx=%d, sy=%d, w=%d, h=%d, dx=%d, dy=%d", sp->no, sx, sy, w, h, dx, dy);
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}
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/*
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スプライトキー待ち用のdepthmap を更新
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*/
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void sp_draw_dmap(void* data, void* userdata) {
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sprite_t *sp = (sprite_t *)data;
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// 非表示状態の時は無視
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if (!sp->show) return;
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// ドラッグ中のスプライトは無視
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if (sp == sact.draggedsp) return;
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cginfo_t *cg = sp->curcg;
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if (cg == NULL) return;
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if (cg->sf == NULL) return;
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// depth map を書く領域を確定
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SDL_Rect cg_rect = {0, 0, cg->sf->w, cg->sf->h};
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SDL_Rect screen_rect = {0, 0, main_surface->w, main_surface->h};
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int sx = 0;
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int sy = 0;
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int dx = sp->cur.x;
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int dy = sp->cur.y;
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int w = cg->sf->w;
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int h = cg->sf->h;
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if (!ags_clipCopyRect(&cg_rect, &screen_rect, &sx, &sy, &dx, &dy, &w, &h)) {
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return;
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}
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if (SDL_ISPIXELFORMAT_ALPHA(cg->sf->format->format)) {
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fill_dmap_mask(cg->sf, sx, sy, dx, dy, w, h, sp->no);
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} else {
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SDL_FillRect(sact.dmap, &(SDL_Rect){dx, dy, w, h}, sp->no);
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}
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return;
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}
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