Animate car
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4 changed files with 153 additions and 69 deletions
134
renderer.h
134
renderer.h
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@ -44,6 +44,8 @@ struct
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*/
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S3L_Model3D models[LCR_RENDERER_MODEL_COUNT];
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uint32_t frame;
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uint8_t loadedChunks[8]; ///< numbers of loaded map chunks
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S3L_Unit mapVerts[LCR_SETTING_MAX_MAP_VERTICES * 3];
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@ -68,6 +70,14 @@ struct
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int previousTriID;
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int triUVs[6];
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uint8_t texSubsampleCount;
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#if LCR_SETTING_ANIMATE_CAR
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S3L_Unit wheelRotation;
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S3L_Unit wheelTurn;
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S3L_Unit wheelRotationCenters[4];
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S3L_Unit animatedCarVerts[LCR_CAR_VERTEX_COUNT * 3];
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#endif
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} LCR_renderer;
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void LCR_pixelFunc3D(S3L_PixelInfo *pixel)
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@ -77,6 +87,10 @@ void LCR_pixelFunc3D(S3L_PixelInfo *pixel)
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{
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LCR_renderer.previousTriID = pixel->triangleID;
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#if LCR_SETTING_TEXTURE_SUBSAMPLE != 0
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LCR_renderer.texSubsampleCount = 0;
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#endif
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if (pixel->modelIndex == 8)
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{
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// car model
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@ -87,11 +101,8 @@ void LCR_pixelFunc3D(S3L_PixelInfo *pixel)
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{
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LCR_renderer.triUVs[i] =
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(LCR_carUvs[2 * LCR_carTriangleUvs[
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3 * pixel->triangleIndex + i / 2] + i % 2] * LCR_IMAGE_SIZE) / 512;
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if (i % 2)
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LCR_renderer.triUVs[i] = 64 -
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LCR_renderer.triUVs[i];
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3 * pixel->triangleIndex + i / 2] + i % 2] * (LCR_IMAGE_SIZE + 1))
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/ 512;
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}
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}
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else
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@ -102,10 +113,6 @@ void LCR_pixelFunc3D(S3L_PixelInfo *pixel)
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3 * pixel->triangleIndex;
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S3L_Unit *v[3];
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#if LCR_SETTING_TEXTURE_SUBSAMPLE != 0
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LCR_renderer.texSubsampleCount = 0;
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#endif
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for (int i = 0; i < 3; ++i)
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v[i] = LCR_renderer.mapVerts + 3 * t[i];
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@ -170,6 +177,7 @@ void LCR_pixelFunc3D(S3L_PixelInfo *pixel)
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uint16_t color;
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#if LCR_SETTING_TEXTURE_SUBSAMPLE != 0
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if (LCR_renderer.texSubsampleCount == 0)
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{
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@ -716,6 +724,8 @@ uint8_t LCR_rendererInit(void)
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{
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LCR_log("initializing renderer");
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LCR_renderer.frame = 0;
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if (!_LCR_buildMapModel())
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return 0;
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@ -725,10 +735,47 @@ uint8_t LCR_rendererInit(void)
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LCR_renderer.carModel = LCR_renderer.models + 8;
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S3L_model3DInit(
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LCR_carVertices,LCR_CAR_VERTEX_COUNT,
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#if LCR_SETTING_ANIMATE_CAR
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LCR_renderer.animatedCarVerts
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#else
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LCR_carVertices
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#endif
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,LCR_CAR_VERTEX_COUNT,
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LCR_carTriangles,LCR_CAR_TRIANGLE_COUNT,
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LCR_renderer.carModel);
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#if LCR_SETTING_ANIMATE_CAR
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for (int i = 0; i < LCR_CAR_VERTEX_COUNT * 3; ++i)
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LCR_renderer.animatedCarVerts[i] = LCR_carVertices[i];
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int count[2];
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count[0] = 0;
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count[1] = 0;
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for (int i = 0; i < 4; ++i)
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LCR_renderer.wheelRotationCenters[i] = 0;
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for (int i = 0; i < LCR_CAR_VERTEX_COUNT; ++i)
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if (LCR_carVertexTypes[i] > 0) // wheel?
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{
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uint8_t front = LCR_carVertexTypes[i] == 1;
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LCR_renderer.wheelRotationCenters[0 + 2 * front] +=
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LCR_carVertices[3 * i + 2];
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LCR_renderer.wheelRotationCenters[1 + 2 * front] +=
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LCR_carVertices[3 * i + 1];
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count[front]++;
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}
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LCR_renderer.wheelRotationCenters[0] /= count[0];
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LCR_renderer.wheelRotationCenters[1] /= count[0];
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LCR_renderer.wheelRotationCenters[2] /= count[1];
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LCR_renderer.wheelRotationCenters[3] /= count[1];
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LCR_renderer.wheelRotation = 0;
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LCR_renderer.wheelTurn = 0;
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#endif
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LCR_renderer.carModel->transform.translation.x -= 2 * LCR_RENDERER_UNIT;
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LCR_renderer.carModel->transform.scale.x = LCR_RENDERER_UNIT / 3;
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@ -1162,6 +1209,51 @@ void LCR_drawLevelFloor(void)
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#endif
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}
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void _LCR_rendererAnimateCar(void)
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{
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for (int i = 0; i < LCR_CAR_VERTEX_COUNT; ++i)
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if (LCR_carVertexTypes[i] > 0)
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{
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S3L_Unit s = S3L_sin(-1 * LCR_renderer.wheelRotation),
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c = S3L_cos(-1 * LCR_renderer.wheelRotation);
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S3L_Unit v[2], tmp;
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unsigned int index = 3 * i;
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uint8_t offset = (LCR_carVertexTypes[i] == 1) * 2;
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v[0] = LCR_carVertices[index + 2] -
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LCR_renderer.wheelRotationCenters[offset];
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v[1] = LCR_carVertices[index + 1] -
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LCR_renderer.wheelRotationCenters[offset + 1];
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tmp = v[0];
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v[0] = (v[0] * c - v[1] * s) / S3L_FRACTIONS_PER_UNIT;
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v[1] = (tmp * s + v[1] * c) / S3L_FRACTIONS_PER_UNIT;
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LCR_renderer.animatedCarVerts[index + 2] =
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v[0] + LCR_renderer.wheelRotationCenters[offset];
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LCR_renderer.animatedCarVerts[index + 1] =
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v[1] + LCR_renderer.wheelRotationCenters[offset + 1];
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if (LCR_carVertexTypes[i] > 1)
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{
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/* Turn front wheels; this is not real turning but just a fake by
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skewing in Z and X directions. */
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LCR_renderer.animatedCarVerts[index] = LCR_carVertices[index];
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LCR_renderer.animatedCarVerts[index + 2] -=
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(LCR_renderer.animatedCarVerts[index] * LCR_renderer.wheelTurn)
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/ (8 * S3L_FRACTIONS_PER_UNIT);
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LCR_renderer.animatedCarVerts[index] +=
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((LCR_renderer.animatedCarVerts[index + 2] -
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LCR_renderer.wheelRotationCenters[0]) * LCR_renderer.wheelTurn)
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/ (2 * S3L_FRACTIONS_PER_UNIT);
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}
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}
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}
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void LCR_rendererDraw(void)
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{
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LCR_renderer.previousTriID = -1;
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@ -1172,27 +1264,17 @@ void LCR_rendererDraw(void)
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LCR_rendererDrawSky(2,
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LCR_renderer.scene.camera.transform.rotation.y,
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-4 * LCR_renderer.scene.camera.transform.rotation.x);
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LCR_renderer.wheelRotation += 5;
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LCR_renderer.wheelTurn = S3L_sin(LCR_renderer.frame * 4);
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_LCR_rendererAnimateCar();
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LCR_drawLevelFloor();
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LCR_rendererDrawLOD();
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LCR_renderer.carModel->transform.translation =
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LCR_renderer.scene.camera.transform.translation;
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LCR_renderer.carModel->transform.translation.x +=
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LCR_RENDERER_UNIT * 2;
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LCR_renderer.carModel->transform.translation.z -=
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LCR_RENDERER_UNIT * 1;
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LCR_renderer.carModel->transform.translation.y -=
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LCR_RENDERER_UNIT * 2;
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S3L_drawScene(LCR_renderer.scene);
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LCR_renderer.frame++;
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}
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#endif // guard
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