split_textures.py

from wand.image import Image
import os

SOURCE_FILE = 'texsource.png'
MOD_NAME = 'terumet'
DEST = 'split_textures/'

def MT(basename):
    return MOD_NAME + '_' + basename + '.png'

TEXTURE_FILES = [
    ['ore_raw', 'htr_furnace_front_unlit', 'raw_sides_unlit', 'htr_furnace_front_lit', 'raw_sides_lit', 'raw_mach_bot', 'raw_mach_top', 'asmelt_front_unlit', 'asmelt_front_lit', 'lavam_top', 'block_tar'],
    ['lump_raw', 'ingot_raw', 'block_raw', 'tool_pick_raw', 'tool_shovel_raw', 'tool_axe_raw', 'tool_sword_raw', 'item_coil_raw', 'upg_base', 'lavam_front_unlit', 'item_prerub', 'upg_tmcrys'],
    [None, 'ingot_tcop', 'block_tcop', 'tool_pick_tcop', 'tool_shovel_tcop', 'tool_axe_tcop', 'tool_sword_tcop', 'item_coil_tcop', 'upg_ext_input', 'lavam_front_lit', 'item_batt_void', 'upg_ext_both'],
    ['item_cryst', 'ingot_tste', 'block_tste', 'tool_pick_tste', 'tool_shovel_tste', 'tool_axe_tste', 'tool_sword_tste', 'upg_ext_output', 'upg_max_heat', 'meseg_top', 'ore_dense_raw'],
    ['item_ceramic', 'ingot_tgol', 'block_tgol', 'tool_pick_tgol', 'tool_shovel_tgol', 'tool_axe_tgol', 'tool_sword_tgol', 'item_coil_tgol', 'upg_heat_xfer', 'repm_front', 'item_batt_therm_full'],
    ['block_ceramic', 'ingot_cgls', 'block_cgls', 'tool_pick_cgls', 'tool_shovel_cgls', 'tool_axe_cgls', 'tool_sword_cgls', 'upg_gen_up', 'upg_speed_up', 'upg_tubelib', 'item_batt_therm'],
    ['item_entropy', 'item_thermese', 'block_thermese', 'frame_tste', 'frame_cgls', 'frame_raw', 'block_thermese_hot', 'item_htg', 'upg_cryst', 'hline', 'item_batt_cop_full'],
    ['htfurn_front', 'htfurn_top_unlit', 'htfurn_sides', 'htfurn_top_lit', 'vulcan_sides', 'vulcan_top', 'htr_solar_top', 'vulcan_front', 'upg_cheat', 'hline_in', 'item_batt_cop'],
    ['item_heatunit', 'ingot_tcha', 'block_tcha', 'tool_pick_tcha', 'tool_shovel_tcha', 'tool_axe_tcha', 'tool_sword_tcha', 'tool_ore_saw', 'block_entropy', 'item_cryscham', 'item_rsuitmat'],
    ['hray_sides', 'hray_front', 'hray_back', 'rayref_sides', 'rayref_front', 'rayref_back', 'tbox_sides', 'tbox_front', 'tbox_back', 'blockov_hline', 'item_rubber'],
    ['tdis_sides', 'tdis_front', 'tdis_back', 'raw_heater_sides', 'tste_heater_sides', 'cgls_heater_sides', 'htr_entropy_top', 'crush_front_unlit', 'crush_front_lit', 'item_tarball', 'vacoven_front'],
    ['item_dust_ob', 'ingot_ttin', 'block_ttin', 'item_press', 'item_dust_wood', 'block_dust_bio', 'item_dust_bio', 'block_pwood', 'block_pwood_sides', 'item_glue', 'vacoven_sides'],
    ['block_tglass_frame', 'block_tglass_streak', 'block_tglassglow_frame', 'block_tglassglow_streak', 'item_rebar', 'blockov_rebar1', 'blockov_rebar2', 'blockov_rebar3', 'item_coke', 'block_coke', 'vacoven_top']
]

if not os.path.exists(DEST):
    os.makedirs(DEST)

with Image(filename=SOURCE_FILE) as source:
    for row in range(len(TEXTURE_FILES)):
        for col in range(len(TEXTURE_FILES[row])):
            if TEXTURE_FILES[row][col] != None:
                clone = source.clone()
                clone.crop(left=col*16, top=row*16, width=16, height=16)
                clone.save(filename=DEST + MT(TEXTURE_FILES[row][col]))