scummvm/engines/mads/events.cpp
2023-12-24 13:19:25 +01:00

265 lines
6.5 KiB
C++

/* 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 "common/scummsys.h"
#include "graphics/cursorman.h"
#include "common/events.h"
#include "engines/util.h"
#include "mads/mads.h"
#include "mads/events.h"
#include "mads/scene.h"
namespace MADS {
EventsManager::EventsManager(MADSEngine *vm) {
_vm = vm;
_cursorSprites = nullptr;
_cursorId = CURSOR_NONE;
_newCursorId = CURSOR_NONE;
_frameCounter = 10;
_priorFrameTime = 0;
_mouseClicked = false;
_mouseReleased = false;
_mouseButtons = 0;
_mouseStatus = 0;
_strokeGoing = 0;
_mouseStatusCopy = 0;
_mouseMoved = false;
_rightMousePressed = false;
_eventTarget = nullptr;
}
EventsManager::~EventsManager() {
freeCursors();
}
void EventsManager::loadCursors(const Common::Path &spritesName) {
delete _cursorSprites;
_cursorSprites = new SpriteAsset(_vm, spritesName, 0x4000);
}
void EventsManager::setCursor(CursorType cursorId) {
_cursorId = cursorId;
changeCursor();
}
void EventsManager::setCursor2(CursorType cursorId) {
_cursorId = cursorId;
_newCursorId = cursorId;
changeCursor();
}
void EventsManager::showCursor() {
CursorMan.showMouse(true);
}
void EventsManager::hideCursor() {
CursorMan.showMouse(false);
}
bool EventsManager::isCursorVisible() {
return CursorMan.isVisible();
}
void EventsManager::waitCursor() {
CursorType cursorId = (CursorType)MIN(_cursorSprites->getCount(), (int)CURSOR_WAIT);
_newCursorId = cursorId;
if (_cursorId != _newCursorId) {
_cursorId = _newCursorId;
changeCursor();
}
}
void EventsManager::changeCursor() {
if (_cursorSprites) {
MSprite *cursor = _cursorSprites->getFrame(_cursorId - 1);
assert(cursor->w == cursor->h);
byte transIndex = cursor->getTransparencyIndex();
// Check for hotspot indication pixels along the right-hand and bottom
// row. Put together, these give the cursor's hotspot x,y
int hotspotX = 0, hotspotY = 0;
const byte *cursorData = (const byte *)cursor->getPixels();
for (int idx = 0; idx < cursor->w; ++idx) {
if (cursorData[(cursor->h - 1) * cursor->w + idx] != transIndex)
hotspotX = idx;
if (cursorData[(idx + 1) * cursor->w - 1] != transIndex)
hotspotY = idx;
}
// Reduce the cursor data to remove the last column from each row, since
// the cursor routines don't have a pitch option
byte *destCursor = new byte[(cursor->w - 1) * (cursor->h - 1)];
const byte *srcP = cursorData;
byte *destP = destCursor;
for (int idx = 0; idx < (cursor->h - 1); ++idx) {
Common::copy(srcP, srcP + cursor->w - 1, destP);
srcP += cursor->w;
destP += cursor->w - 1;
}
// Set the raw cursor data to use
CursorMan.replaceCursor(destCursor, cursor->w - 1, cursor->h - 1,
hotspotX, hotspotY, transIndex);
showCursor();
delete[] destCursor;
}
}
void EventsManager::freeCursors() {
delete _cursorSprites;
_cursorSprites = nullptr;
}
void EventsManager::pollEvents() {
checkForNextFrameCounter();
_mouseMoved = false;
Common::Event event;
while (g_system->getEventManager()->pollEvent(event)) {
// If an event target is specified, pass the event to it
if (_eventTarget) {
_eventTarget->onEvent(event);
continue;
}
// Handle keypress
switch (event.type) {
case Common::EVENT_QUIT:
case Common::EVENT_RETURN_TO_LAUNCHER:
return;
case Common::EVENT_KEYDOWN:
// Check for debugger
_pendingKeys.push(event.kbd);
return;
case Common::EVENT_KEYUP:
return;
case Common::EVENT_WHEELUP:
_pendingKeys.push(Common::KeyState(Common::KEYCODE_PAGEUP));
return;
case Common::EVENT_WHEELDOWN:
_pendingKeys.push(Common::KeyState(Common::KEYCODE_PAGEDOWN));
return;
case Common::EVENT_LBUTTONDOWN:
case Common::EVENT_RBUTTONDOWN:
_mouseClicked = true;
_mouseButtons = 1;
_mouseMoved = true;
if (event.type == Common::EVENT_RBUTTONDOWN) {
_rightMousePressed = true;
_mouseStatus |= 2;
} else {
_mouseStatus |= 1;
}
return;
case Common::EVENT_LBUTTONUP:
case Common::EVENT_RBUTTONUP:
_mouseClicked = false;
_mouseReleased = true;
_mouseMoved = true;
_rightMousePressed = false;
if (event.type == Common::EVENT_RBUTTONUP) {
_mouseStatus &= ~2;
} else {
_mouseStatus &= ~1;
}
return;
case Common::EVENT_MOUSEMOVE:
_mousePos = event.mouse;
_currentPos = event.mouse;
_mouseMoved = true;
break;
default:
break;
}
}
}
bool EventsManager::checkForNextFrameCounter() {
// Check for next game frame
uint32 milli = g_system->getMillis();
if ((milli - _priorFrameTime) >= GAME_FRAME_TIME) {
++_frameCounter;
_priorFrameTime = milli;
// Do any palette cycling
_vm->_game->_scene.animatePalette();
// Display the frame
_vm->_screen->update();
return true;
}
return false;
}
void EventsManager::delay(int cycles) {
uint32 totalMilli = cycles * 1000 / GAME_FRAME_RATE;
uint32 delayEnd = g_system->getMillis() + totalMilli;
while (!_vm->shouldQuit() && g_system->getMillis() < delayEnd) {
g_system->delayMillis(10);
pollEvents();
}
}
void EventsManager::waitForNextFrame() {
_mouseClicked = false;
_mouseReleased = false;
_mouseButtons = 0;
bool mouseClicked = false;
bool mouseReleased = false;
int mouseButtons = 0;
uint32 frameCtr = getFrameCounter();
while (!_vm->shouldQuit() && frameCtr == _frameCounter) {
delay(1);
mouseClicked |= _mouseClicked;
mouseReleased |= _mouseReleased;
mouseButtons |= _mouseButtons;
}
_mouseClicked = mouseClicked;
_mouseReleased = mouseReleased;
_mouseButtons = mouseButtons;
_mouseMoved |= _mouseClicked || _mouseReleased;
}
void EventsManager::initVars() {
_mousePos = Common::Point(-1, -1);
_mouseStatusCopy = _mouseStatus;
_strokeGoing = 0;
}
void EventsManager::clearEvents() {
_pendingKeys.clear();
}
} // End of namespace MADS