From 9794edd155faec29e41294c55dece45a116a3b8c Mon Sep 17 00:00:00 2001 From: Javier Sancho Date: Thu, 5 Dec 2019 13:42:43 +0100 Subject: [PATCH] Custom scene node example --- examples/03.CustomSceneNode.c | 162 ++++++++++++++++++++++++++++++++++ 1 file changed, 162 insertions(+) create mode 100644 examples/03.CustomSceneNode.c diff --git a/examples/03.CustomSceneNode.c b/examples/03.CustomSceneNode.c new file mode 100644 index 0000000..d9a161a --- /dev/null +++ b/examples/03.CustomSceneNode.c @@ -0,0 +1,162 @@ +/* c-irrlicht --- C bindings for Irrlicht Engine + + Copyright (C) 2019 Javier Sancho + + This file is part of c-irrlicht. + + c-irrlicht is free software; you can redistribute it and/or modify + it under the terms of the GNU Lesser General Public License as + published by the Free Software Foundation; either version 3 of the + License, or (at your option) any later version. + + c-irrlicht 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 Lesser General Public + License along with guile-irrlicht. If not, see + . +*/ + +#include +#include +#include +#include + +int main() +{ + // ask user for driver + irr_video_E_DRIVER_TYPE driverType; + + printf("Please select the driver you want for this example:\n" \ + " (a) OpenGL 1.5\n (b) Direct3D 9.0c\n (c) Direct3D 8.1\n" \ + " (d) Burning's Software Renderer\n (e) Software Renderer\n" \ + " (f) NullDevice\n (otherKey) exit\n\n"); + + char i = getchar(); + + switch(i) + { + case 'a': driverType = irr_video_EDT_OPENGL; break; + case 'b': driverType = irr_video_EDT_DIRECT3D9; break; + case 'c': driverType = irr_video_EDT_DIRECT3D8; break; + case 'd': driverType = irr_video_EDT_BURNINGSVIDEO; break; + case 'e': driverType = irr_video_EDT_SOFTWARE; break; + case 'f': driverType = irr_video_EDT_NULL; break; + default: return 1; + } + + // create device and exit if creation failed + irr_core_dimension2d_u32 windowSize = {640, 480}; + irr_IrrlichtDevice *device = + irr_createDevice(driverType, &windowSize, 16, false, false, false); + + if (!device) + { + return 1; // could not create selected driver + } + + // create engine and camera + irr_setWindowCaption(device, "Custom Scene Node - Irrlicht Engine Demo"); + + irr_video_IVideoDriver* driver = irr_getVideoDriver(device); + irr_scene_ISceneManager* smgr = irr_getSceneManager(device); + + irr_core_vector3df position = {0, -40, 0}; + irr_core_vector3df lookat = {0, 0, 0}; + irr_scene_addCameraSceneNode(smgr, NULL, &position, &lookat, -1, true); + + // create our custom scene node + irr_scene_ISceneNode *myNode; + irr_core_aabbox3d_f32 box; + irr_video_S3DVertex vertices[] = + { + // pos, normal, color, tcoords + { {0, 0, 10}, {1, 1, 0}, {255, 0, 255, 255}, {0, 1} }, + { {10, 0, -10}, {1, 0, 0}, {255, 255, 0, 255}, {1, 1} }, + { {0, 20, 0}, {0, 1, 1}, {255, 255, 255, 0}, {1, 0} }, + { {-10, 0, -10}, {0, 0, 1}, {255, 0, 255, 0}, {0, 0} } + }; + irr_video_SMaterial material = {false, false}; + + irr_core_aabbox3d_reset(box, vertices[0].pos); + for (int i=1; i<4; i++) + { + irr_core_aabbox3d_addInternalPoint(box, vertices[i].pos); + } + + void customRender() + { + uint16_t indices[] = {0, 2, 3, 2, 1, 3, 1, 0, 3, 2, 0, 1}; + irr_video_setMaterial(driver, material); + irr_video_setTransform(driver, + irr_video_ETS_WORLD, + irr_scene_getAbsoluteTransformation(myNode)); + irr_video_drawVertexPrimitiveList(driver, + &vertices[0], 4, + &indices[0], 4, + irr_video_EVT_STANDARD, + irr_scene_EPT_TRIANGLES, + irr_video_EIT_16BIT); + } + + irr_core_aabbox3d_f32* customGetBoundingBox() + { + return &box; + } + + uint32_t customGetMaterialCount() + { + return 1; + } + + irr_video_SMaterial* customGetMaterial(unsigned int i) + { + return &material; + } + + myNode = irr_scene_addCustomSceneNode(smgr, NULL, 666, NULL, NULL, NULL, + customRender, customGetBoundingBox, + customGetMaterialCount, customGetMaterial); + + // add rotation + irr_core_vector3df rotation = {0.8, 0, 0.8}; + irr_scene_ISceneNodeAnimator* anim = + irr_scene_createRotationAnimator(smgr, &rotation); + + if (anim) + { + irr_scene_addAnimator(myNode, anim); + } + + // loop + int frames = 0; + irr_video_SColor bgcolor = {0, 100, 100, 100}; + while (irr_run(device)) + { + irr_video_beginScene(driver, true, true, &bgcolor, NULL, NULL); + irr_scene_drawAll(smgr); + irr_video_endScene(driver); + + frames++; + if (frames == 100) + { + int fps = irr_video_getFPS(driver); + const char *driverName = irr_video_getName(driver); + size_t capsize = + snprintf(NULL, 0, "Irrlicht Engine [%s] FPS:%d", + driverName, fps); + char *caption = (char*)malloc(capsize + 1); + snprintf(caption, capsize + 1, + "Irrlicht Engine [%s] FPS:%d", + driverName, fps); + + irr_setWindowCaption(device, caption); + frames = 0; + } + } + + irr_drop(device); + return 0; +} -- 2.39.5