uint8 Script::readScriptChar(bool allow7C, bool limitVal, bool limitVar) {
uint8 result;
uint8 data = readScript8bits();
if (limitVal) {
data &= 0x7F;
}
if (allow7C && (data == 0x7C)) {
// Index a bidimensional array
uint8 parta, partb;
parta = readScriptChar(false, false, false);
partb = readScriptChar(false, true, true);
result = _variables[0x0A * parta + partb + 0x19];
} else if (data == 0x23) {
// Index an array
data = readScript8bits();
if (limitVar) {
data &= 0x7F;
}
result = _variables[data - 0x61];
} else {
// Immediate value
result = data - 0x30;
}
return result;
}
void Script::o_strcmpnejmp() { // 0x1A
uint16 varnum = readScript8or16bits();
uint8 val;
uint8 result = 1;
debugScript(1, false, "STRCMP-NEJMP: var[0x%04X..],", varnum);
do {
val = readScriptChar(true, true, true);
if (_variables[varnum] != val) {
result = 0;
}
varnum++;
debugScript(1, false, " 0x%02X", val);
} while (!(getCodeByte(_currentInstruction - 1) & 0x80));
uint16 address = readScript16bits();
if (!result) {
debugScript(1, true, " jumping to @0x%04X", address);
_currentInstruction = address;
} else {
debugScript(1, true, " not jumping");
}
}
void Script::o_printstring() {
char stringstorage[15], newchar;
uint8 counter = 0;
debugScript(1, true, "PRINTSTRING");
memset(stringstorage, 0, 15);
do {
newchar = readScriptChar(true, true, true) + 0x30;
if (newchar < 0x30 || newchar > 0x39) { // If character is invalid, chuck a space in
if (newchar < 0x41 || newchar > 0x7A) {
newchar = 0x20;
}
}
stringstorage[counter] = newchar;
counter++;
} while (!(getCodeByte(_currentInstruction - 1) & 0x80));
stringstorage[counter] = 0;
// Load the font if required
if (!_font) {
_font = new Font(_vm->_system);
}
_font->printstring(stringstorage);
}
void Script::o_printstring() {
char stringstorage[15];
uint8 counter = 0;
debugScript(1, true, "PRINTSTRING");
memset(stringstorage, 0, 15);
do {
char newchar = readScriptChar(true, true, true) + 0x30;
if (newchar < 0x30 || newchar > 0x39) { // If character is invalid, chuck a space in
if (newchar < 0x41 || newchar > 0x7A) {
newchar = 0x20;
}
}
stringstorage[counter] = newchar;
counter++;
} while (!(getCodeByte(_currentInstruction - 1) & 0x80));
stringstorage[counter] = 0;
Common::Rect topbar(640, 80);
Graphics::Surface *gamescreen = _vm->_system->lockScreen();
// Clear the top bar
gamescreen->fillRect(topbar, 0);
// Draw the string
printString(gamescreen, stringstorage);
_vm->_system->unlockScreen();
}
void Script::o_obscureswap() {
uint16 var1, var2, tmp;
debugScript(1, true, "OBSCSWAP");
// Read the first variable
var1 = readScriptChar(false, true, true) * 10;
var1 += readScriptChar(false, true, true) + 0x19;
// Read the second variable
var2 = readScriptChar(false, true, true) * 10;
var2 += readScriptChar(false, true, true) + 0x19;
// Swap the values
tmp = _variables[var1];
setVariable(var1, _variables[var2]);
setVariable(var2, tmp);
}
void Script::o_loadstring() {
uint16 varnum = readScript8or16bits();
debugScript(1, false, "LOADSTRING var[0x%04X..] =", varnum);
do {
setVariable(varnum++, readScriptChar(true, true, true));
debugScript(1, false, " 0x%02X", _variables[varnum - 1]);
} while (!(getCodeByte(_currentInstruction - 1) & 0x80));
debugScript(1, false, "\n");
}
uint16 Script::getVideoRefString() {
Common::String str;
byte c;
while ((c = readScript8bits())) {
switch (c) {
case 0x23:
c = readScript8bits();
c = _variables[c - 0x61] + 0x30;
if (c >= 0x41 && c <= 0x5A) {
c += 0x20;
}
break;
case 0x7C:
uint8 parta, partb;
parta = readScriptChar(false, false, false);
partb = readScriptChar(false, false, false);
c = _variables[0x0A * parta + partb + 0x19] + 0x30;
break;
default:
if (c >= 0x41 && c <= 0x5A) {
c += 0x20;
}
}
// Append the current character at the end of the string
str += c;
}
// Add a trailing dot
str += 0x2E;
debugScript(0, false, "%s", str.c_str());
// Extract the script name.
Common::String scriptname(_scriptFile.c_str(), _scriptFile.size() - 4);
// Get the fileref of the resource
return _vm->_resMan->getRef(str, scriptname);
}
void Script::o_strcmpnejmp_var() { // 0x21
uint16 data = readScriptVar();
if (data > 9) {
data -= 7;
}
data = _variables[data + 0x19];
bool stringsmatch = 1;
do {
if (_variables[data++] != readScriptChar(true, true, true)) {
stringsmatch = 0;
}
} while (!(getCodeByte(_currentInstruction - 1) & 0x80));
uint16 offset = readScript16bits();
if (!stringsmatch) {
_currentInstruction = offset;
}
}
void Script::o_charlessjmp() {
uint16 varnum = readScript8or16bits();
uint8 result = 0;
debugScript(1, false, "CHARLESS-JMP: var[0x%04X..],", varnum);
do {
uint8 val = readScriptChar(true, true, true);
if (val > _variables[varnum]) {
result = 1;
}
varnum++;
debugScript(1, false, " 0x%02X", val);
} while (!(getCodeByte(_currentInstruction - 1) & 0x80));
uint16 address = readScript16bits();
if (result) {
debugScript(1, true, " jumping to @0x%04X", address);
_currentInstruction = address;
} else {
debugScript(1, true, " not jumping");
}
}