add spot scripts, remove script/language.h dependency, take care

makefile

 	@echo -e "\e[93mGenerating strings $<\e[0m"
 	$(STRAGB) -o $@ -i $< -t string/table.tbl -e 0xFF
 
-$(BLDPATH)/%.o: %.c $(ASSETS) $(PAGB_INCLUDE)/pokeagb/pokeagb.h src/include/script/language.h	
+$(BLDPATH)/%.o: %.c $(ASSETS) $(PAGB_INCLUDE)/pokeagb/pokeagb.h
 	@echo -e "\e[32mCompiling $<\e[0m"		
 	$(shell mkdir -p $(dir $@))		
 	$(CC) $(CFLAGS) -c $< -o $@		
 		
-$(BLDPATH)/%.o: %.s $(PAGB_INCLUDE)/pokeagb/pokeagb.h src/include/script/language.h	
+$(BLDPATH)/%.o: %.s $(PAGB_INCLUDE)/pokeagb/pokeagb.h
 	@echo -e "\e[32mAssembling $<\e[0m"		
 	$(shell mkdir -p $(dir $@))		
 	$(PREPROC) $< $(CHARMAP) > $*.i		

patches/overworlds/trainer.asm

 bx r1
 .pool
 
+.org 0x08080334
+ldr r2, =tb_on_spot+1
+bx r2
+.pool
 

src/include/script/language.h

 trainerbattle 0x9 \winlosebattle_id 0x3 \winlosebattle_win \winlosebattle_lose
 .endm
 
+@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
+@@@                                                                                               @@@
+@@@   special version of the trainerbattle command to be caught by the custom handler             @@@
+@@@   if the player is spotted and spotscript_flag is set, spotscript_ptr_true is executed        @@@
+@@@   if the player is spotted and spotscript_flag is not set, spotscript_ptr_false is executed   @@@
+@@@   if the player talks to an npc who has this as its first command, it is ignored              @@@
+@@@   THIS COMMAND WORKS IF AND ONLY IF THE TRAINER BIT IS SET ON THE NPC TEMPLATE                @@@
+@@@                                                                                               @@@
+@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
+.macro spotscript spotscript_flag:req spotscript_ptr_true:req spotscript_ptr_false:req
+.byte 0x5C, 0xFF
+.hword \spotscript_flag
+.hword 0xFFFF
+.word \spotscript_ptr_true
+.word \spotscript_ptr_false
+.endm
+
 .macro msgbox msgbox_textpointer:req msgbox_callstd:req
 loadpointer 0x0 \msgbox_textpointer
 callstd \msgbox_callstd

src/specials/trainer_battle.c

 /* === INCLUDE === */
 
 #include <agb_debug.h>
-#include <callback.h>
 #include <config/core.h>
-#include <debug.h>
-#include <game_engine.h>
-#include <types.h>
-
+#include <pokeagb/pokeagb.h>
 
 /* === ENGINE EXTERNS === */
 extern void battle_init();
  * @return flag +1 for medium, flag +2 for hard
  */
 u16 tb_modify_flag_id(u16 flag) {
-    u16 difficulty = var_get(0x5052);
+    u16 difficulty = var_load(0x5052);
     u16 new_flag = flag;
     switch (difficulty) {
     case 0:
         trainerbattle_message_intro = NULL;
 
         trainerbattle_message_defeat = tb_modify_text((char *)load_word(ptr_script), 0);
-        ptr_script+= 4;
+        ptr_script += 4;
 
         trainerbattle_message_2 = NULL;
         trainerbattle_message_need_2_poke = NULL;
         battle_80801F0_something();
 
         return (void *)(0x081A4EC1); /* some script to execute */
+
+    case 0xFF:
+        /* this is a registered on-spot script */
+        /* since this is a trainerbattle configuration we will skip the TB command. */
+        return ptr_script + 13;
     default:
         trainerbattle_battle_type = load_byte(ptr_script);
         ptr_script++;
     // assert(0);
     // return NULL;
 }
+
+void tb_on_spot(u8 npc_id, void *ptr_script) {
+    scripting_npc = npc_id;
+    var_800F = npc_states[npc_id].local_id;
+    u8 tb_battle_type = load_byte(ptr_script + 1);
+
+    if (tb_battle_type != 0xFF) {
+        tb_configure_by_script(ptr_script + 1);
+        script_env_init_script((void *)0x081A4EB4);
+        script_env_enable();
+    } else {
+        u16 flag = load_hword(ptr_script + 2);
+        void *scr_true = (void *)load_word(ptr_script + 6);
+        void *scr_false = (void *)load_word(ptr_script + 10);
+        if (flag_check(flag))
+            script_env_init_script(scr_true);
+        else
+            script_env_init_script(scr_false);
+        script_env_enable();
+    }
+}