Merge pull request #214 from kichikuou/DrawEffect

Implement DrawEffect HLL

CMakeLists.txt

@@ -133,6 +133,7 @@ target_sources(xsystem4 PRIVATE
   src/hll/Data.c
   src/hll/DataFile.c
   src/hll/DrawDungeon.c
+  src/hll/DrawEffect.c
   src/hll/DrawGraph.c
   src/hll/DrawMovie.c
   src/hll/DrawPluginManager.c

src/ffi.c

@@ -421,6 +421,7 @@ extern struct static_library lib_Data;
 extern struct static_library lib_DataFile;
 extern struct static_library lib_DrawDungeon;
 extern struct static_library lib_DrawDungeon14;
+extern struct static_library lib_DrawEffect;
 extern struct static_library lib_DrawGraph;
 extern struct static_library lib_DrawMovie;
 extern struct static_library lib_DrawMovie2;
@@ -527,6 +528,7 @@ static struct static_library *static_libraries[] = {
 	&lib_DataFile,
 	&lib_DrawDungeon,
 	&lib_DrawDungeon14,
+	&lib_DrawEffect,
 	&lib_DrawGraph,
 	&lib_DrawMovie,
 	&lib_DrawMovie2,

src/hll/DrawEffect.c

@@ -0,0 +1,69 @@
+/* Copyright (C) 2024 kichikuou <KichikuouChrome@gmail.com>
+ *
+ * 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, see <http://gnu.org/licenses/>.
+ */
+
+#include "effect.h"
+#include "hll.h"
+#include "sact.h"
+#include "xsystem4.h"
+
+static struct {
+	bool on;
+	int type;
+	int dst;
+	int old;
+	int new;
+} draw_effect = {false};
+
+bool DrawEffect_Begin(int writeSurface, int wx, int wy, int destSurface, int dx, int dy, int srcSurface, int sx, int sy, int width, int height, int effect)
+{
+	// Only support fullscreen effects
+	if (wx || wy || dx || dy || sx || sy || width != config.view_width || height != config.view_height)
+		return false;
+	draw_effect.on = true;
+	draw_effect.type = effect;
+	draw_effect.dst = writeSurface;
+	draw_effect.old = destSurface;
+	draw_effect.new = srcSurface;
+	return true;
+}
+
+void DrawEffect_Draw(int time, int totalTime)
+{
+	if (!draw_effect.on)
+		return;
+	struct sact_sprite *dst = sact_try_get_sprite(draw_effect.dst);
+	struct sact_sprite *old = sact_try_get_sprite(draw_effect.old);
+	struct sact_sprite *new = sact_try_get_sprite(draw_effect.new);
+	if (!dst || !old || !new)
+		return;
+
+	Texture *dst_tex = sprite_get_texture(dst);
+	Texture *old_tex = sprite_get_texture(old);
+	Texture *new_tex = sprite_get_texture(new);
+	effect_update_texture(draw_effect.type, dst_tex, old_tex, new_tex, (float)time / (float)totalTime);
+	sprite_dirty(dst);
+}
+
+void DrawEffect_End(void)
+{
+	draw_effect.on = false;
+}
+
+HLL_LIBRARY(DrawEffect,
+	    HLL_EXPORT(Begin, DrawEffect_Begin),
+	    HLL_EXPORT(Draw, DrawEffect_Draw),
+	    HLL_EXPORT(End, DrawEffect_End)
+	    );

src/meson.build

@@ -87,6 +87,7 @@ xsystem4 = [version_h,
             'hll/Data.c',
             'hll/DataFile.c',
             'hll/DrawDungeon.c',
+            'hll/DrawEffect.c',
             'hll/DrawGraph.c',
             'hll/DrawMovie.c',
             'hll/DrawPluginManager.c',