1# Copyright (c) 2013-2016 Jeffrey Pfau
  2#
  3# This Source Code Form is subject to the terms of the Mozilla Public
  4# License, v. 2.0. If a copy of the MPL was not distributed with this
  5# file, You can obtain one at http://mozilla.org/MPL/2.0/.
  6from ._pylib import ffi, lib
  7from . import tile
  8from cached_property import cached_property
  9
 10def find(path):
 11    core = lib.mCoreFind(path.encode('UTF-8'))
 12    if core == ffi.NULL:
 13        return None
 14    return Core._init(core)
 15
 16def findVF(vf):
 17    core = lib.mCoreFindVF(vf.handle)
 18    if core == ffi.NULL:
 19        return None
 20    return Core._init(core)
 21
 22def loadPath(path):
 23    core = find(path)
 24    if not core or not core.loadFile(path):
 25        return None
 26    return core
 27
 28def loadVF(vf):
 29    core = findVF(vf)
 30    if not core or not core.loadROM(vf):
 31        return None
 32    return core
 33
 34def needsReset(f):
 35    def wrapper(self, *args, **kwargs):
 36        if not self._wasReset:
 37            raise RuntimeError("Core must be reset first")
 38        return f(self, *args, **kwargs)
 39    return wrapper
 40
 41class Core(object):
 42    if hasattr(lib, 'PLATFORM_GBA'):
 43        PLATFORM_GBA = lib.PLATFORM_GBA
 44
 45    if hasattr(lib, 'PLATFORM_GB'):
 46        PLATFORM_GB = lib.PLATFORM_GB
 47
 48    def __init__(self, native):
 49        self._core = native
 50        self._wasReset = False
 51
 52    @cached_property
 53    def tiles(self):
 54        return tile.TileView(self)
 55
 56    @classmethod
 57    def _init(cls, native):
 58        core = ffi.gc(native, native.deinit)
 59        success = bool(core.init(core))
 60        if not success:
 61            raise RuntimeError("Failed to initialize core")
 62        if hasattr(cls, 'PLATFORM_GBA') and core.platform(core) == cls.PLATFORM_GBA:
 63            from .gba import GBA
 64            return GBA(core)
 65        if hasattr(cls, 'PLATFORM_GB') and core.platform(core) == cls.PLATFORM_GB:
 66            from .gb import GB
 67            return GB(core)
 68        return Core(core)
 69
 70    def _deinit(self):
 71        self._core.deinit(self._core)
 72
 73    def loadFile(self, path):
 74        return bool(lib.mCoreLoadFile(self._core, path.encode('UTF-8')))
 75
 76    def isROM(self, vf):
 77        return bool(self._core.isROM(vf.handle))
 78
 79    def loadROM(self, vf):
 80        return bool(self._core.loadROM(self._core, vf.handle))
 81
 82    def loadSave(self, vf):
 83        return bool(self._core.loadSave(self._core, vf.handle))
 84
 85    def loadTemporarySave(self, vf):
 86        return bool(self._core.loadTemporarySave(self._core, vf.handle))
 87
 88    def loadPatch(self, vf):
 89        return bool(self._core.loadPatch(self._core, vf.handle))
 90
 91    def autoloadSave(self):
 92        return bool(lib.mCoreAutoloadSave(self._core))
 93
 94    def autoloadPatch(self):
 95        return bool(lib.mCoreAutoloadPatch(self._core))
 96
 97    def platform(self):
 98        return self._core.platform(self._core)
 99
100    def desiredVideoDimensions(self):
101        width = ffi.new("unsigned*")
102        height = ffi.new("unsigned*")
103        self._core.desiredVideoDimensions(self._core, width, height)
104        return width[0], height[0]
105
106    def setVideoBuffer(self, image):
107        self._core.setVideoBuffer(self._core, image.buffer, image.stride)
108
109    def reset(self):
110        self._core.reset(self._core)
111        self._wasReset = True
112
113    @needsReset
114    def runFrame(self):
115        self._core.runFrame(self._core)
116
117    @needsReset
118    def runLoop(self):
119        self._core.runLoop(self._core)
120
121    @needsReset
122    def step(self):
123        self._core.step(self._core)
124
125    @staticmethod
126    def _keysToInt(*args, **kwargs):
127        keys = 0
128        if 'raw' in kwargs:
129            keys = kwargs['raw']
130        for key in args:
131            keys |= 1 << key
132        return keys
133
134    def setKeys(self, *args, **kwargs):
135        self._core.setKeys(self._core, self._keysToInt(*args, **kwargs))
136
137    def addKeys(self, *args, **kwargs):
138        self._core.addKeys(self._core, self._keysToInt(*args, **kwargs))
139
140    def clearKeys(self, *args, **kwargs):
141        self._core.clearKeys(self._core, self._keysToInt(*args, **kwargs))
142
143    @needsReset
144    def frameCounter(self):
145        return self._core.frameCounter(self._core)
146
147    def frameCycles(self):
148        return self._core.frameCycles(self._core)
149
150    def frequency(self):
151        return self._core.frequency(self._core)
152
153    def getGameTitle(self):
154        title = ffi.new("char[16]")
155        self._core.getGameTitle(self._core, title)
156        return ffi.string(title, 16).decode("ascii")
157
158    def getGameCode(self):
159        code = ffi.new("char[12]")
160        self._core.getGameCode(self._core, code)
161        return ffi.string(code, 12).decode("ascii")