first scripting implementation

[l2e.git] / src / common / ScriptRunner.cpp

diff --git a/src/common/ScriptRunner.cpp b/src/common/ScriptRunner.cpp
new file mode 100644 (file)
index 0000000..110b702
--- /dev/null
+++ b/src/common/ScriptRunner.cpp
@@ -0,0 +1,126 @@
+/*
+ * ScriptRunner.cpp
+ *
+ *  Created on: Oct 13, 2012
+ *      Author: holy
+ */
+
+#include "ScriptRunner.h"
+
+#include "Script.h"
+#include "ScriptHost.h"
+
+#include <cstdlib>
+
+using geometry::Vector;
+
+namespace common {
+
+ScriptRunner::ScriptRunner()
+: host(0)
+, script(0)
+, cursor(0)
+, address0(0)
+, address1(0)
+, integer0(0)
+, integer1(0)
+, vector0(0, 0)
+, vector1(0, 0) {
+
+}
+
+ScriptRunner::~ScriptRunner() {
+
+}
+
+
+bool ScriptRunner::Running() const {
+       return script && cursor < script->textlen;
+}
+
+void ScriptRunner::Run(ScriptHost &h, const Script &s) {
+       host = &h;
+       script = &s;
+       Reset();
+       while (cursor < script->textlen) {
+               unsigned char code(script->text[cursor]);
+               ++cursor;
+               Exec(code);
+       }
+       host = 0;
+       script = 0;
+}
+
+void ScriptRunner::Reset() {
+       cursor = 0;
+       address0 = 0;
+       address1 = 0;
+       integer0 = 0;
+       integer1 = 0;
+       vector0 = Vector<int>(0, 0);
+       vector1 = Vector<int>(0, 0);
+}
+
+void ScriptRunner::Exec(unsigned char code) {
+       switch (code) {
+               case Script::CODE_MOVE_A0:
+                       address0 = PopAddress();
+                       break;
+               case Script::CODE_MOVE_A1:
+                       address1 = PopAddress();
+                       break;
+               case Script::CODE_MOVE_I0:
+                       integer0 = PopInt();
+                       break;
+               case Script::CODE_MOVE_I1:
+                       integer1 = PopInt();
+                       break;
+               case Script::CODE_MOVE_V0:
+                       vector0 = PopVector();
+                       break;
+               case Script::CODE_MOVE_V1:
+                       vector1 = PopVector();
+                       break;
+               case Script::CODE_ADD_I0:
+                       integer0 += PopInt();
+                       break;
+               case Script::CODE_ADD_I1:
+                       integer1 += PopInt();
+                       break;
+               case Script::CODE_ADD_V0:
+                       vector0 += PopVector();
+                       break;
+               case Script::CODE_ADD_V1:
+                       vector1 += PopVector();
+                       break;
+               case Script::CODE_RAND_I0:
+                       integer0 = std::rand();
+                       break;
+               case Script::CODE_RAND_I1:
+                       integer1 = std::rand();
+                       break;
+               case Script::CODE_SYSCALL:
+                       host->HandleSyscall(*this);
+                       break;
+       }
+}
+
+void *ScriptRunner::PopAddress() {
+       void *const *addr(reinterpret_cast<void *const *>(script->text + cursor));
+       cursor += sizeof(void *);
+       return *addr;
+}
+
+int ScriptRunner::PopInt() {
+       const int *i(reinterpret_cast<const int *>(script->text + cursor));
+       cursor += sizeof(int);
+       return *i;
+}
+
+const Vector<int> &ScriptRunner::PopVector() {
+       const Vector<int> *vec(reinterpret_cast<const Vector<int> *>(script->text + cursor));
+       cursor += sizeof(Vector<int>);
+       return *vec;
+}
+
+}