125 lines
2.5 KiB
C++
125 lines
2.5 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 modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (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, see <http://www.gnu.org/licenses/>.
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*
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*/
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#ifndef AWE_INTERN_H
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#define AWE_INTERN_H
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#include "common/algorithm.h"
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#include "common/endian.h"
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#include "common/language.h"
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#include "common/rect.h"
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namespace Awe {
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using Common::Language;
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enum {
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kPartCopyProtection = 16000,
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kPartIntro = 16001,
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kPartWater = 16002,
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kPartPrison = 16003,
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kPartCite = 16004,
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kPartArene = 16005,
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kPartLuxe = 16006,
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kPartFinal = 16007,
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kPartPassword = 16008
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};
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enum {
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kPaulaFreq = 7159092
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};
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struct Ptr {
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uint8 *pc = nullptr;
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bool byteSwap = false;
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uint8 fetchByte() {
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return *pc++;
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}
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uint16 fetchWord() {
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const uint16 i = byteSwap ? READ_LE_UINT16(pc) : READ_BE_UINT16(pc);
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pc += 2;
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return i;
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}
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};
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struct Point : public Common::Point {
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Point() : Common::Point() {}
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Point(int16 xx, int16 yy) : Common::Point(xx, yy) {}
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Point(const Point &p) : Common::Point(p) {}
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void scale(int u, int v) {
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x = (x * u) >> 16;
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y = (y * v) >> 16;
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}
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};
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struct QuadStrip {
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enum {
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MAX_VERTICES = 70
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};
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uint8 numVertices = 0;
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Point vertices[MAX_VERTICES];
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};
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struct Color {
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byte rgb[3];
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uint8 &r = rgb[0];
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uint8 &g = rgb[1];
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uint8 &b = rgb[2];
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Color() {
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clear();
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}
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void clear() {
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r = g = b = 0;
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}
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};
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struct Frac {
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static const int BITS = 16;
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static const int MASK = (1 << BITS) - 1;
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uint32 inc = 0;
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uint64 offset = 0;
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void reset(int n, int d) {
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inc = (((int64)n) << BITS) / d;
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offset = 0;
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}
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uint32 getInt() const {
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return offset >> BITS;
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}
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uint32 getFrac() const {
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return offset & MASK;
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}
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int interpolate(int sample1, int sample2) const {
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const int fp = getFrac();
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return (sample1 * (MASK - fp) + sample2 * fp) >> BITS;
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}
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};
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} // namespace Awe
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#endif
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