mirror of
https://github.com/libretro/scummvm.git
synced 2025-01-25 04:01:03 +00:00
027dc4c38c
actors can be now partially illuminated (per slice), it iss visible in scene rc02 in the right part of the room
328 lines
12 KiB
C++
328 lines
12 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#include "bladerunner/light.h"
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#include "common/util.h"
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namespace BladeRunner {
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Light::Light() {
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_animationData = nullptr;
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}
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Light::~Light() {
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if (_animationData != nullptr) {
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delete[] _animationData;
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}
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}
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void Light::read(Common::ReadStream *stream, int framesCount, int frame, int animated) {
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_framesCount = framesCount;
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_animated = animated;
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int size = stream->readUint32LE();
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size = size - 32;
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stream->read(_name, 20);
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_animatedParameters = stream->readUint32LE();
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if (_animationData != nullptr) {
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delete[] _animationData;
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}
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int floatsCount = size / 4;
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_animationData = new float[floatsCount];
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for (int i = 0; i < floatsCount; i++) {
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_animationData[i] = stream->readFloatLE();
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}
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_m11ptr = _animationData;
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_m12ptr = _m11ptr + (_animatedParameters & 0x1 ? framesCount : 1);
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_m13ptr = _m12ptr + (_animatedParameters & 0x2 ? framesCount : 1);
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_m14ptr = _m13ptr + (_animatedParameters & 0x4 ? framesCount : 1);
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_m21ptr = _m14ptr + (_animatedParameters & 0x8 ? framesCount : 1);
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_m22ptr = _m21ptr + (_animatedParameters & 0x10 ? framesCount : 1);
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_m23ptr = _m22ptr + (_animatedParameters & 0x20 ? framesCount : 1);
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_m24ptr = _m23ptr + (_animatedParameters & 0x40 ? framesCount : 1);
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_m31ptr = _m24ptr + (_animatedParameters & 0x80 ? framesCount : 1);
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_m32ptr = _m31ptr + (_animatedParameters & 0x100 ? framesCount : 1);
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_m33ptr = _m32ptr + (_animatedParameters & 0x200 ? framesCount : 1);
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_m34ptr = _m33ptr + (_animatedParameters & 0x400 ? framesCount : 1);
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_colorRPtr = _m34ptr + (_animatedParameters & 0x800 ? framesCount : 1);
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_colorGPtr = _colorRPtr + (_animatedParameters & 0x1000 ? framesCount : 1);
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_colorBPtr = _colorGPtr + (_animatedParameters & 0x2000 ? framesCount : 1);
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_falloffStartPtr = _colorBPtr + (_animatedParameters & 0x4000 ? framesCount : 1);
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_falloffEndPtr = _falloffStartPtr + (_animatedParameters & 0x8000 ? framesCount : 1);
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_angleStartPtr = _falloffEndPtr + (_animatedParameters & 0x10000 ? framesCount : 1);
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_angleEndPtr = _angleStartPtr + (_animatedParameters & 0x20000 ? framesCount : 1);
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setupFrame(frame);
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}
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void Light::readVqa(Common::ReadStream *stream, int framesCount, int frame, int animated) {
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_framesCount = framesCount;
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_animated = animated;
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_animatedParameters = stream->readUint32LE();
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int size = stream->readUint32LE();
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if(_animationData != nullptr) {
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delete[] _animationData;
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}
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int floatsCount = size / 4;
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_animationData = new float[floatsCount];
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for (int i = 0; i < floatsCount; i++) {
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_animationData[i] = stream->readFloatLE();
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}
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_m11ptr = _animationData;
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_m12ptr = _m11ptr + (_animatedParameters & 0x1 ? framesCount : 1);
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_m13ptr = _m12ptr + (_animatedParameters & 0x2 ? framesCount : 1);
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_m14ptr = _m13ptr + (_animatedParameters & 0x4 ? framesCount : 1);
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_m21ptr = _m14ptr + (_animatedParameters & 0x8 ? framesCount : 1);
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_m22ptr = _m21ptr + (_animatedParameters & 0x10 ? framesCount : 1);
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_m23ptr = _m22ptr + (_animatedParameters & 0x20 ? framesCount : 1);
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_m24ptr = _m23ptr + (_animatedParameters & 0x40 ? framesCount : 1);
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_m31ptr = _m24ptr + (_animatedParameters & 0x80 ? framesCount : 1);
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_m32ptr = _m31ptr + (_animatedParameters & 0x100 ? framesCount : 1);
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_m33ptr = _m32ptr + (_animatedParameters & 0x200 ? framesCount : 1);
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_m34ptr = _m33ptr + (_animatedParameters & 0x400 ? framesCount : 1);
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_colorRPtr = _m34ptr + (_animatedParameters & 0x800 ? framesCount : 1);
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_colorGPtr = _colorRPtr + (_animatedParameters & 0x1000 ? framesCount : 1);
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_colorBPtr = _colorGPtr + (_animatedParameters & 0x2000 ? framesCount : 1);
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_falloffStartPtr = _colorBPtr + (_animatedParameters & 0x4000 ? framesCount : 1);
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_falloffEndPtr = _falloffStartPtr + (_animatedParameters & 0x8000 ? framesCount : 1);
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_angleStartPtr = _falloffEndPtr + (_animatedParameters & 0x10000 ? framesCount : 1);
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_angleEndPtr = _angleStartPtr + (_animatedParameters & 0x20000 ? framesCount : 1);
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setupFrame(frame);
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}
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void Light::setupFrame(int frame) {
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int offset = frame % _framesCount;
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_matrix._m[0][0] = (_animatedParameters & 0x1 ? _m11ptr[offset] : *_m11ptr);
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_matrix._m[0][1] = (_animatedParameters & 0x2 ? _m12ptr[offset] : *_m12ptr);
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_matrix._m[0][2] = (_animatedParameters & 0x4 ? _m13ptr[offset] : *_m13ptr);
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_matrix._m[0][3] = (_animatedParameters & 0x8 ? _m14ptr[offset] : *_m14ptr);
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_matrix._m[1][0] = (_animatedParameters & 0x10 ? _m21ptr[offset] : *_m21ptr);
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_matrix._m[1][1] = (_animatedParameters & 0x20 ? _m22ptr[offset] : *_m22ptr);
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_matrix._m[1][2] = (_animatedParameters & 0x40 ? _m23ptr[offset] : *_m23ptr);
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_matrix._m[1][3] = (_animatedParameters & 0x80 ? _m24ptr[offset] : *_m24ptr);
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_matrix._m[2][0] = (_animatedParameters & 0x100 ? _m31ptr[offset] : *_m31ptr);
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_matrix._m[2][1] = (_animatedParameters & 0x200 ? _m32ptr[offset] : *_m32ptr);
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_matrix._m[2][2] = (_animatedParameters & 0x400 ? _m33ptr[offset] : *_m33ptr);
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_matrix._m[2][3] = (_animatedParameters & 0x800 ? _m34ptr[offset] : *_m34ptr);
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_color.r = (_animatedParameters & 0x1000 ? _colorRPtr[offset] : *_colorRPtr);
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_color.g = (_animatedParameters & 0x2000 ? _colorGPtr[offset] : *_colorGPtr);
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_color.b = (_animatedParameters & 0x4000 ? _colorBPtr[offset] : *_colorBPtr);
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_falloffStart = (_animatedParameters & 0x8000 ? _falloffStartPtr[offset] : *_falloffStartPtr);
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_falloffEnd = (_animatedParameters & 0x10000 ? _falloffEndPtr[offset] : *_falloffEndPtr);
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_angleStart = (_animatedParameters & 0x20000 ? _angleStartPtr[offset] : *_angleStartPtr);
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_angleEnd = (_animatedParameters & 0x40000 ? _angleEndPtr[offset] : *_angleEndPtr);
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}
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float Light::calculate(Vector3 start, Vector3 end) {
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return calculateFalloutCoefficient(_matrix * start, _matrix * end, _falloffStart, _falloffEnd);
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}
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void Light::calculateColor(Color *outColor, Vector3 position) {
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Vector3 positionT = _matrix * position;
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float att = attenuation(_falloffStart, _falloffEnd, positionT.length());
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outColor->r = _color.r * att;
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outColor->g = _color.g * att;
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outColor->b = _color.b * att;
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}
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float Light::calculateFalloutCoefficient(Vector3 start, Vector3 end, float falloffStart, float falloffEnd) {
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if (falloffEnd == 0.0f) {
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return 1.0e30f;
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}
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if (falloffStart * falloffStart >= start.length() && falloffStart * falloffStart >= end.length()) {
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return 1.0e30f;
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}
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float diff = (end - start).length();
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float v31 = 0.0f;
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if (diff != 0.0f) {
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Vector3 v27 = Vector3::cross(start, (end - start));
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v31 = v27.length() / diff;
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}
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if (v31 < falloffEnd) {
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return 1.0f / (1.0f - (v31 / falloffEnd));
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}
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return 1.0e30f;
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}
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float Light::attenuation(float min, float max, float distance) {
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if (max == 0.0f) {
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return 1.0f;
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}
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if (min < max) {
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distance = CLIP(distance, min, max);
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float x = (max - distance) / (max - min);
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return x * x * (3.0f - 2.0f * x);
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}
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if (distance < min) {
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return 1.0f;
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}
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return 0.0f;
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}
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float Light1::calculate(Vector3 start, Vector3 end) {
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start = _matrix * start;
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end = _matrix * end;
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float v40 = 0.0f;
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if (_falloffEnd != 0.0f) {
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v40 = calculateFalloutCoefficient(start, end, _falloffStart, _falloffEnd);
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}
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float v41 = atan2(sqrt(start.x * start.x + start.y * start.y), -start.z);
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float v42 = atan2(sqrt(end.x * end.x + end.y * end.y), -end.z);
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float v43;
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if ((_angleStart >= v41 && _angleStart >= v42) || (_angleEnd <= v41 && _angleEnd <= v42)) {
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v43 = 1.0e30f;
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} else {
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v43 = 2.0;
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}
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if (v43 < v40) {
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return v40;
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} else {
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return v43;
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}
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}
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void Light1::calculateColor(Color *outColor, Vector3 position) {
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Vector3 positionT = _matrix * position;
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outColor->r = 0.0f;
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outColor->g = 0.0f;
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outColor->b = 0.0f;
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if (positionT.z < 0.0f) {
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float v12 = attenuation(_angleStart, _angleEnd, atan2(sqrt(positionT.x * positionT.x + positionT.y * positionT.y), -positionT.z));
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float v13 = attenuation(_falloffStart, _falloffEnd, positionT.length());
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outColor->r = v12 * v13 * _color.r;
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outColor->g = v12 * v13 * _color.g;
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outColor->b = v12 * v13 * _color.b;
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}
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}
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float Light2::calculate(Vector3 start, Vector3 end) {
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start = _matrix * start;
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end = _matrix * end;
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float v54 = 0.0f;
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if (_falloffEnd != 0.0f) {
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v54 = calculateFalloutCoefficient(start, end, _falloffStart, _falloffEnd);
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}
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float v55 = atan2(fabs(start.x), -start.z);
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float v58 = atan2(fabs(start.y), -start.z);
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float v57 = atan2(fabs(end.x), -end.z);
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float v56 = atan2(fabs(end.y), -end.z);
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float v59;
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if ((_angleStart >= v55 && _angleStart >= v57 && _angleStart >= v58 && _angleStart >= v56) || (_angleEnd <= v55 && _angleEnd <= v57 && _angleEnd <= v58 && _angleEnd <= v56)) {
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v59 = 1.0e30f;
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} else {
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v59 = 2.0f;
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}
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if (v59 < v54) {
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return v54;
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} else {
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return v59;
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}
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}
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void Light2::calculateColor(Color *outColor, Vector3 position) {
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Vector3 positionT = _matrix * position;
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outColor->r = 0.0f;
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outColor->g = 0.0f;
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outColor->b = 0.0f;
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if (positionT.z < 0.0f) {
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float v11 = attenuation(_angleStart, _angleEnd, atan2(fabs(positionT.y), -positionT.z));
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float v12 = attenuation(_angleStart, _angleEnd, atan2(fabs(positionT.x), -positionT.z));
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float v13 = attenuation(_falloffStart, _falloffEnd, positionT.length());
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outColor->r = v11 * v12 * v13 * _color.r;
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outColor->g = v11 * v12 * v13 * _color.g;
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outColor->b = v11 * v12 * v13 * _color.b;
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}
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}
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void Light3::calculateColor(Color *outColor, Vector3 position) {
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Vector3 positionT = _matrix * position;
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outColor->r = 0.0f;
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outColor->g = 0.0f;
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outColor->b = 0.0f;
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if (positionT.z < 0.0f) {
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float v12 = attenuation(_angleStart, _angleEnd, sqrt(positionT.x * positionT.x + positionT.y * positionT.y));
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float v13 = attenuation(_falloffStart, _falloffEnd, positionT.length());
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outColor->r = v12 * v13 * _color.r;
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outColor->g = v12 * v13 * _color.g;
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outColor->b = v12 * v13 * _color.b;
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}
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}
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void Light4::calculateColor(Color *outColor, Vector3 position) {
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Vector3 positionT = _matrix * position;
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outColor->r = 0.0f;
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outColor->g = 0.0f;
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outColor->b = 0.0f;
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if (positionT.z < 0.0f) {
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float v11 = attenuation(_angleStart, _angleEnd, fabs(positionT.y));
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float v12 = attenuation(_angleStart, _angleEnd, fabs(positionT.x));
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float v13 = attenuation(_falloffStart, _falloffEnd, positionT.length());
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outColor->r = v11 * v12 * v13 * _color.r;
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outColor->g = v11 * v12 * v13 * _color.g;
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outColor->b = v11 * v12 * v13 * _color.b;
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}
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}
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float LightAmbient::calculate(Vector3 start, Vector3 end) {
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return 1.0e30f;
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}
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void LightAmbient::calculateColor(Color *outColor, Vector3 position) {
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outColor->r = _color.r;
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outColor->g = _color.g;
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outColor->b = _color.b;
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}
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} // End of namespace BladeRunner
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