I was trying out the freedroidrpg game but it was terrible gameplay.
Some of the things I wanted like faster regeneration and one item per inventory slot, dieing respawns to town instead of quiting entire game, and some key bindings.
I got some of the code done but the one item per inventory slot was escaping me.
Anyway if anyone wants to try out mods here is script. run it and recompile and install and it should work.

#!/bin/bash
#Changes freedroidrpg 0.11 with some better code
#Run this script with $1 being the directory 'src' of freedroidrpg
cp $1/character.c $1/character.c.orig
cp $1/influ.c $1/influ.c.orig
cp $1/init.c $1/init.c.orig
sleep 3
cat $1/character.c.orig | sed '/Me . health_recovery_rate =/ c\Me . health_recovery_rate = 1.2' > /$1/character.c
cat $1/influ.c.orig | sed '/Me . status = I/ c\//Me . status = INFOUT' > $1/influ.c
cat $1/init.c.orig | sed '/Me . status = I/ c\Me . energy = 20; \n //Me . status = INFOUT' | sed '/append_new_game_message ( _("Game/ c\//append_new_game_message ( _("Game over.\\n") );' |sed '/GameConfig . I/ c\//GameConfig . Inventory_Visible = FALSE;' |sed '/GameConfig . C/ c\//GameConfig . CharacterScreen_Visible = FALSE;' |sed '/GameConfig . M/ c\//GameConfig . Mission_Log_Visible = FALSE;' |sed '/ThouArtDefeatedS/ c\//ThouArtDefeatedSound ( ) ;' |sed '/start_t/ c\//start_tux_death_explosions ( ) ;' | sed '/while ( ( SDL/ c\Teleport ( 0, 30, 56, 0); \n while ( SDL_GetTicks() - now < 1000 * WAIT_AFTER_KILLED ) // && ( GameOver == TRUE ) )' | sed '/GameOver = T/ c\//GameOver = TRUE;' > $1/init.c

The images are based on the size, not 100% though. If u scale the boots and the red dilitium crystal to 32x32 using gimp, the item only takes up 1 slot.

Not true with other weapons like the baseball bat , helmet or iron pipe.

This is so confusing why its like that.

I think I found the inventory size thing but its not working right. I made the images 32x32 in the graphics directory. It does indeed shrink the image but the block size is same. check it out here is script.

#!/bin/bash
#Changes freedroidrpg 0.11 with some better code
#Run this script with $1 being the directory 'src' of freedroidrpg
cp $1/blocks.c $1/blocks.c.orig
sleep 3
cat $1/blocks.c.orig | sed '/ItemMap [ item_type ] . inv_image . inv_size . x =/ c\ItemMap [ item_type ] . inv_image . inv_size . x = 1 ; \n //ItemMap [ item_type ] . inv_image . inv_size . x = original_img -> w / 32 ;' | sed '/ItemMap [ item_type ] . inv_image . inv_size . y =/ c\ItemMap [ item_type ] . inv_image . inv_size . y = 1 ; \n //ItemMap [ item_type ] . inv_image . inv_size . y = original_img -> h / 32 ;' | sed '/int target_x/ c\int target_x = 32; \n //int target_x = ItemMap [ item_type ] . inv_image . inv_size . x * 32;' | sed '/int target_y/ c\int target_y = 32; \n //int target_y = ItemMap [ item_type ] . inv_image . inv_size . y * 32;' | sed '/target_x = 6/ c\target_x = 32; \n //target_x = 64;' | sed '/target_y = o/ c\target_y = 32; \n //target_y = original_img -> h * 64.0 / (float)original_img -> w;' | sed '/target_y = 6/ c\target_y = 32; \n //target_y = 64;' | sed '/target_x = o/ c\target_x = 32; \n //target_x = original_img -> w * 64.0 / (float)original_img -> h;' > $1/blocks.c

I dont know if I broke anything using this script but here is final; it compiled and everything when i tried it.
edith yea i never needed to resize images.

#!/bin/bash
#Changes freedroidrpg 0.11 with some better code
#Run this script with $1 being the directory 'src' of freedroidrpg
cat -b $1/character.c | perl -pe 's/^\s+//' > $1/character.c.orig
cat -b $1/influ.c | perl -pe 's/^\s+//' > $1/influ.c.orig
cat -b $1/init.c | perl -pe 's/^\s+//' > $1/init.c.orig
cat -b $1/blocks.c | perl -pe 's/^\s+//' > $1/blocks.c.orig
sleep 3
echo begin character
cat $1/character.c.orig | sed '/324/ c\buffer Me . health_recovery_rate = 0.6;' > $1/character.c
echo begin influ
cat $1/influ.c.orig | sed 863d > $1/influ.c
echo begin init
cat $1/init.c.orig | sed 2115,2119d | sed 2154d | sed '/start_t/ c\buffer Me . energy = 20; \n buffer ThouArtDefeatedSound ( ) ; \n buffer append_new_game_message ( _("Tux got toasted.\\n") );' | sed '/2161/ c\buffer Teleport ( 0, 30, 56, 0); \n buffer while ( SDL_GetTicks() - now < 1000 * WAIT_AFTER_KILLED )' > $1/init.c
echo begin blocks
cat $1/blocks.c.orig | sed 149,178d | sed '/if the siz/ c\buffer ItemMap [ item_type ] . inv_image . inv_size . y = 1 ; \n buffer ItemMap [ item_type ] . inv_image . inv_size . x = 1 ;' > $1/blocks.c
sleep 3
echo begin awkchar
cat $1/character.c | awk '{print $2,$3,$4,$5,$6,$7,$8,$9,$10,$11,$12,$13,$14,$15,$16,$17,$18,$19,$20,$21,$22,$23,$24,$25,$26,$27,$28, $29,$30,$31,$32,$33,$34,$35,$36,$37,$38,$39,$40,$41,$42,$43,$44,$45,$46,$47,$48,$49,$50,$51,$52,$53, $54,$55,$56,$57,$58,$59,$60,$61,$62,$63,$64,$65,$66,$67,$68,$69,$70,$71,$72,$73,$74,$75,$76,$77,$78, $79,$80,$81,$82,$83,$84,$85,$86,$87,$88,$89,$90}' > $1/character.c.orig
echo begin awkinflu
cat $1/influ.c | awk '{print $2,$3,$4,$5,$6,$7,$8,$9,$10,$11,$12,$13,$14,$15,$16,$17,$18,$19,$20,$21,$22,$23,$24,$25,$26,$27,$28, $29,$30,$31,$32,$33,$34,$35,$36,$37,$38,$39,$40,$41,$42,$43,$44,$45,$46,$47,$48,$49,$50,$51,$52,$53, $54,$55,$56,$57,$58,$59,$60,$61,$62,$63,$64,$65,$66,$67,$68,$69,$70,$71,$72,$73,$74,$75,$76,$77,$78, $79,$80,$81,$82,$83,$84,$85,$86,$87,$88,$89,$90}' > $1/influ.c.orig
cat $1/init.c | awk '{print $2,$3,$4,$5,$6,$7,$8,$9,$10,$11,$12,$13,$14,$15,$16,$17,$18,$19,$20,$21,$22,$23,$24,$25,$26,$27,$28, $29,$30,$31,$32,$33,$34,$35,$36,$37,$38,$39,$40,$41,$42,$43,$44,$45,$46,$47,$48,$49,$50,$51,$52,$53, $54,$55,$56,$57,$58,$59,$60,$61,$62,$63,$64,$65,$66,$67,$68,$69,$70,$71,$72,$73,$74,$75,$76,$77,$78, $79,$80,$81,$82,$83,$84,$85,$86,$87,$88,$89,$90}' > $1/init.c.orig
echo begin awkblock
cat $1/blocks.c | awk '{print $2,$3,$4,$5,$6,$7,$8,$9,$10,$11,$12,$13,$14,$15,$16,$17,$18,$19,$20,$21,$22,$23,$24,$25,$26,$27,$28, $29,$30,$31,$32,$33,$34,$35,$36,$37,$38,$39,$40,$41,$42,$43,$44,$45,$46,$47,$48,$49,$50,$51,$52,$53, $54,$55,$56,$57,$58,$59,$60,$61,$62,$63,$64,$65,$66,$67,$68,$69,$70,$71,$72,$73,$74,$75,$76,$77,$78, $79,$80,$81,$82,$83,$84,$85,$86,$87,$88,$89,$90}' > $1/blocks.c.orig
sleep 3
echo begin cpfinal
cp $1/character.c.orig $1/character.c
cp $1/init.c.orig $1/init.c
cp $1/influ.c.orig $1/influ.c
cp $1/blocks.c.orig $1/blocks.c