This page is a work-in-progress document listing VM opcodes of the Kyrandia games. Unless otherwise noted, these opcodes are based on Kyrandia 1. Cyx created the list of Cmd functions, clem and Lordhoto will try to fill in parameters and usage notes. If you have any additions, contact the ScummVM team on IRC.
Hint: To disable an opcode/command pair in the compiled scripts, overwrite it with 4C 00 (add sp,00).
Opcodes
There are more complete disassemblers around, will add their info ASAP.
44 = push
45 = ? compare [sp], [xx] ?
49 = ? copy [xx], [sp] ?
4C = add sp,xx ; what would be dec sp,xx? maybe 4B or 4E?
4E = execute command (see below)
Commands
There's still a little confusion about the numbering, so don't take anything below for granted.
00? Cmd_Magic_In_Mouse_Item
01 Cmd_Character_Says 3 args (unk, unk, stringID) - also see 34
02? Cmd_Pause_Ticks
03? Cmd_Draw_Scene_Anim_Shape
04? Cmd_Query_Game_Flag
05? Cmd_Set_Game_Flag
06? Cmd_Reset_Game_Flag
07? Cmd_Run_NPC_Script
08? Cmd_Set_Special_Exit_List
09? Cmd_Block_In_Walkable_Region
0A? Cmd_Block_Out_Walkable_Region
0B Cmd_Walk_Player_To_Point 4 args (unk, x, x, y) - x may be be greater than 0xFF, y must not, so only 1 byte for that
0C? Cmd_Drop_Item_In_Scene
0D Cmd_Draw_Anim_Shape_Into_Scene 4 args (remove item from screen?) (removes note from desk)
0E Cmd_Create_Mouse_Item 1 arg (itemID) - pick up item; ie mousecursor=item id
0F? Cmd_Save_Page_To_Disk
10? Cmd_Load_Page_From_Disk
11? Cmd_Scene_Anim_On
12? Cmd_Scene_Anim_Off
13? Cmd_Elapsed_Seconds
14? Cmd_Mouse_Is_Pointer
15? Cmd_Destroy_Mouse_Item
16? Cmd_Run_Scene_Anim_Until_Done
17? Cmd_Fade_Special_Palette
18? Cmd_Play_AdLib_Sound
19? Cmd_Play_AdLib_Score
1A? Cmd_Phase_In_Same_Scene
1B? Cmd_Set_Scene_Phasing_Flag
1C? Cmd_Reset_Scene_Phasing_Flag
1D? Cmd_Query_Scene_Phasing_Flag
1E? Cmd_Scene_To_Direction
1F? Cmd_Set_Birthstone_Gem
20? Cmd_Place_Item_In_Generic_Map_Scene
21? Cmd_Set_Brandon_Status_Bit
22? Cmd_Pause_Seconds
23? Cmd_Get_Characters_Location
24? Cmd_Run_NPC_Subscript
25? Cmd_Magic_Out_Mouse_Item
26? Cmd_Internal_Anim_On
27? Cmd_Force_Brandon_To_Normal
28? Cmd_Poison_Death_Now
29? Cmd_Set_Scale_Mode
note: this looks more like 2A, check numbering
29 4 ; play WSA file? (or just load it? coords?)
2A? Cmd_Open_WSA_File
2B? Cmd_Close_WSA_File
2C? Cmd_Run_WSA_From_Beginning_To_End
2D? Cmd_Display_WSA_Frame
2E? Cmd_Enter_New_Scene
2F? Cmd_Set_Special_Enter_X_And_Y
30 Cmd_Run_WSA_Frames
31 Cmd_Pop_Brandon_Into_Scene
32 Cmd_Restore_All_Object_Backgrounds
33 Cmd_Set_Custom_Palette_Range
34 Cmd_Custom_Print_Talk_String 4 args (color, unk, unk, stringid) - see also 01
35 Cmd_Restore_Custom_Print_Background 0 args ; restore text background?
36 Cmd_Hide_Mouse 0 args
37 Cmd_Show_Mouse 0 args
38 Cmd_Get_Character_X
39 Cmd_Get_Character_Y
3A Cmd_Change_Characters_Facing
3B Cmd_Copy_WSA_Region
3C Cmd_Text_Print
3D Cmd_Random
3E Cmd_Load_Sound_File
3F Cmd_Display_WSA_Frame_On_HidPage
40? Cmd_Display_WSA_Sequential_Frames
41? Cmd_Draw_Character_Standing
42? Cmd_Internal_Anim_Off
43? Cmd_Change_Characters_X_And_Y
44? Cmd_Clear_Scene_Animator_Beacon
45? Cmd_Query_Scene_Animator_Beacon
46? Cmd_Refresh_Scene_Animator
47? Cmd_Place_Item_In_Off_Scene
48 Cmd_Wipe_Down_Mouse_Item // destroys picked up item, sets mouse cursor to normal
49? Cmd_Place_Character_In_Other_Scene
4A? Cmd_Get_Key
4B? Cmd_Specific_Item_In_Inventory
4C? Cmd_Pop_Mobile_NPC_Into_Scene
4D? Cmd_Mobile_Character_In_Scene
4E? Cmd_Hide_Mobile_Character
4F? Cmd_Unhide_Mobile_Character
50 Cmd_Set_Characters_Location
51 Cmd_Walk_Character_To_Point
52 Cmd_Special_Event_Display_Brynns_Note
53 Cmd_Special_Event_Remove_Brynns_Note
54 Cmd_Set_Logic_Page
55 Cmd_Fat_Print
Cmd_Preserve_All_Object_Backgrounds // 0x57
Cmd_Update_Scene_Animations // 0x58
Cmd_Scene_Animation_Active // 0x59
Cmd_Set_Characters_Movement_Delay // 0x5A
Cmd_Get_Characters_Facing // 0x5B
Cmd_Bkgd_Scroll_Scene_And_Masks_Right // 0x5C
Cmd_Find_Brightest_Fireberry // 0x5D
Cmd_Set_Fireberry_Glow_Palette // 0x5E
Cmd_Set_Death_Handler_Flag // 0x5F
60 Cmd_Drink_Potion_Animation // 0x60
61 Cmd_Make_Amulet_Appear // 0x61 // used in altar.emc?
Cmd_Draw_Item_Shape_Into_Scene // 0x62
Cmd_Set_Characters_Current_Frame // 0x63
64 Cmd_Wait_For_Confirmation_Mouse_Click // 0x64
Cmd_Page_Flip // 0x65
Cmd_Set_Scene_File // 0x66
Cmd_What_Item_In_Marble_Vase // 0x67
Cmd_Set_Item_In_Marble_Vase // 0x68
Cmd_Add_Item_To_Inventory // 0x69
6A Cmd_Int_Print // 0x6A // prints last pushed value to top left corner? (debug only?)
6B Cmd_Shake_Screen // 0x6B
6C Cmd_Create_Amulet_Jewel // 0x6C (last param pushed before: 01=yellow, 02=red, 03=pink, 04=blue)
Cmd_Set_Scene_Anim_Curr_XY // 0x6D
6E Cmd_Poison_Brandon_And_Remaps // 0x6E
6F Cmd_Fill_Flask_With_Water // 0x6F
Cmd_Get_Characters_Movement_Delay // 0x70
Cmd_Get_Birthstone_Gem // 0x71
Cmd_Query_Brandon_Status_Bit // 0x72
73 Cmd_Play_Flute_Animation // 0x73
74 Cmd_Play_Winter_Scroll_Sequence // 0x74
Cmd_Get_Idol_Gem // 0x75
Cmd_Set_Idol_Gem // 0x76
Cmd_Total_Items_In_Scene // 0x77
Cmd_Restore_Brandons_Movement_Delay // 0x78
Cmd_Set_Mouse_Pos // 0x79
Cmd_Get_Mouse_State // 0x7A
Cmd_Set_Entrance_Mouse_Cursor_Track // 0x7B
Cmd_Item_Appears_On_Ground // 0x7C
Cmd_Set_No_Draw_Shapes_Flag // 0x7D
Cmd_Fade_Entire_Palette // 0x7E
Cmd_Item_On_Ground_Here // 0x7F
Cmd_Query_Cauldron_State // 0x80
Cmd_Set_Cauldron_State // 0x81
Cmd_Query_Crystal_State // 0x82
Cmd_Set_Crystal_State // 0x83
Cmd_Set_Palette_Range // 0x84
85 Cmd_Shrink_Brandon_Down // 0x85
86 Cmd_Grow_Brandon_Up // 0x86
Cmd_Set_Brandon_Scale_X_And_Y // 0x87
Cmd_Reset_Scale_Mode // 0x88
Cmd_Get_Scale_Depth_Table_Value // 0x89
Cmd_Set_Scale_Depth_Table_Value // 0x8A
8B Cmd_Message // 0x8B - set room name/status text (unk, stringID)
Cmd_Check_Click_On_NPC // 0x8C
Cmd_Get_Foyer_Item // 0x8D
Cmd_Set_Foyer_Item // 0x8E
Cmd_Dispel_Magic_Animation // 0x8F
Cmd_Set_No_Item_Drop_Region // 0x90
Cmd_Walk_Malcolm_On // 0x91
91 Cmd_Passive_Protection 0 args // 0x92
Cmd_Set_Playing_Loop // 0x93
93 Cmd_Brandon_To_Stone_Sequence 0 args // 0x94
94 Cmd_Brandon_Healing_Sequence // 0x95
Cmd_Protect_Command_Line // 0x96
Cmd_Pause_Music_Seconds // 0x97
Cmd_Reset_Mask_Region // 0x98
Cmd_Set_Palette_Change_Flag // 0x99
Cmd_Fill_Rect // 0x9A
Cmd_Dummy // 0x9B