d_t_gekotag with a single regswap (#76)

include/d/t/d_t_gekotag.h

@@ -2,18 +2,56 @@
 #define D_T_GEKOTAG_H
 
 #include "d/a/d_a_base.h"
+#include "d/a/e/d_a_e_geko.h"
+#include "d/t/d_tg.h"
 #include "s/s_State.hpp"
 #include "s/s_StateMgr.hpp"
 
-class dTgGekoTag : public dAcBase_c {
+class dTgGekoTag : public dTg_c {
 public:
     dTgGekoTag() : mStateMgr(*this, sStateID::null) {}
     virtual ~dTgGekoTag() {}
 
+    virtual int create() override;
+    virtual int doDelete() override;
+    virtual int actorExecute() override;
+    virtual int draw() override;
+
     STATE_FUNC_DECLARE(dTgGekoTag, Wait);
 
 private:
-    /* 0x??? */ STATE_MGR_DECLARE(dTgGekoTag);
+    void doExecute();
+
+    s32 getNumGeko() const {
+        return (params >> 16) & 0xF;
+    }
+
+    s32 getNoSpawnRadiusParm() const {
+        return params & 0xFF;
+    }
+
+    u8 getGekoParam() const {
+        return (params >> 20) & 0x3;
+    }
+
+    u8 getParm3() const {
+        return (params >> 22) & 0xFF;
+    }
+
+    f32 getNoSpawnRadius() const {
+        return getNoSpawnRadiusParm() != 0xFF ? getNoSpawnRadiusParm() * 100.0f : 100.0f;
+    }
+
+    /* 0x0FC */ STATE_MGR_DECLARE(dTgGekoTag);
+    /* 0x138 */ dAcRef_c<dAcEgeko_c> mRefs[15];
+    /* 0x1EC */ u8 field_0x1EC[0x1F0 - 0x1EC];
+    /* 0x1F0 */ f32 mNoSpawnRadius;
+    /* 0x1F4 */ s32 mNumGeko;
+    /* 0x1F8 */ u16 mTimer1;
+    /* 0x1FA */ u16 mTimer2;
+    /* 0x1FC */ u8 mGekoParam;
+    // seemingly unused
+    /* 0x1FD */ u8 field_0x1FD;
 };
 
 #endif