Initial commit

engines/tetraedge/game/characters_shadow.cpp

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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * 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 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 <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "tetraedge/tetraedge.h"
+#include "tetraedge/game/character.h"
+#include "tetraedge/game/characters_shadow.h"
+#include "tetraedge/game/characters_shadow_opengl.h"
+#include "tetraedge/game/characters_shadow_tinygl.h"
+#include "tetraedge/te/te_light.h"
+#include "tetraedge/te/te_renderer.h"
+#include "tetraedge/te/te_3d_texture.h"
+
+
+namespace Tetraedge {
+
+/*static*/
+Te3DObject2 *CharactersShadow::_camTarget = nullptr;
+
+CharactersShadow::CharactersShadow() : _glTex(0), _texSize(0) {
+}
+
+void CharactersShadow::create(InGameScene *scene) {
+	_texSize = 720;
+	_camTarget = new Te3DObject2();
+	TeRenderer *renderer = g_engine->getRenderer();
+	renderer->enableTexture();
+	_camera = new TeCamera();
+	_camera->setProjMatrixType(2);
+	_camera->setAspectRatio(1.0);
+	_camera->setName("_shadowCam");
+	_camera->viewport(0, 0, _texSize, _texSize);
+
+	createInternal();
+
+	renderer->disableTexture();
+}
+
+void CharactersShadow::createTexture(InGameScene *scene) {
+	TeRenderer *renderer = g_engine->getRenderer();
+	renderer->enableTexture();
+	TeLight *light = scene->shadowLight();
+	if (light) {
+		const TeQuaternion q1 = TeQuaternion::fromAxisAndAngle(TeVector3f32(0, 1, 0), light->positionRadial().getX() - M_PI_2);
+		const TeQuaternion q2 = TeQuaternion::fromAxisAndAngle(TeVector3f32(1, 0, 0), light->positionRadial().getY());
+		_camera->setRotation(q2 * q1);
+		_camera->setPosition(light->position3d());
+	}
+	_camera->setFov((float)(scene->shadowFov() * M_PI / 180.0));
+	_camera->setOrthoPlanes(scene->shadowNearPlane(), scene->shadowFarPlane());
+	_camera->apply();
+
+	createTextureInternal(scene);
+
+	TeCamera::restore();
+	TeCamera::restore();
+}
+
+void CharactersShadow::destroy() {
+	deleteTexture();
+	if (_camera)
+		_camera = nullptr;
+	if (_camTarget) {
+		delete _camTarget;
+		_camTarget = nullptr;
+	}
+}
+
+/*static*/
+CharactersShadow *CharactersShadow::makeInstance() {
+	Graphics::RendererType r = g_engine->preferredRendererType();
+
+#if defined(USE_OPENGL_GAME)
+	if (r == Graphics::kRendererTypeOpenGL)
+		return new CharactersShadowOpenGL();
+#endif
+
+#if defined(USE_TINYGL)
+	if (r == Graphics::kRendererTypeTinyGL)
+		return new CharactersShadowTinyGL();
+#endif
+	error("Couldn't create CharactersShadow for selected renderer");
+}
+
+} // end namespace Tetraedge