88 lines
1.7 KiB
Go
88 lines
1.7 KiB
Go
// +build android
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package raylib
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/*
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#include "raylib.h"
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#include <android/asset_manager.h>
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#include <android_native_app_glue.h>
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extern void android_main(struct android_app *app);
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extern void android_init(void *state);
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AAssetManager* asset_manager;
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const char* internal_storage_path;
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*/
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import "C"
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import (
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"errors"
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"fmt"
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"io"
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"unsafe"
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)
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var callbackHolder func(unsafe.Pointer)
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// Initialize Window and OpenGL Graphics
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func InitWindow(width int32, height int32, t interface{}) {
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cwidth := (C.int)(width)
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cheight := (C.int)(height)
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app, ok := t.(unsafe.Pointer)
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if ok {
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C.InitWindow(cwidth, cheight, app)
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C.android_init(app)
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}
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}
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// Sets callback function
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func SetCallbackFunc(callback func(unsafe.Pointer)) {
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callbackHolder = callback
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}
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//export androidMain
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func androidMain(app *C.struct_android_app) {
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if callbackHolder != nil {
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callbackHolder(unsafe.Pointer(app))
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}
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}
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// Open asset
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func OpenAsset(name string) (Asset, error) {
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cname := C.CString(name)
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defer C.free(unsafe.Pointer(cname))
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a := &asset{C.AAssetManager_open(C.asset_manager, cname, C.AASSET_MODE_UNKNOWN)}
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if a.ptr == nil {
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return nil, errors.New("asset file could not be opened")
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}
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return a, nil
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}
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type asset struct {
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ptr *C.AAsset
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}
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func (a *asset) Read(p []byte) (n int, err error) {
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n = int(C.AAsset_read(a.ptr, unsafe.Pointer(&p[0]), C.size_t(len(p))))
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if n == 0 && len(p) > 0 {
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return 0, io.EOF
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}
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return n, nil
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}
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func (a *asset) Seek(offset int64, whence int) (int64, error) {
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off := C.AAsset_seek(a.ptr, C.off_t(offset), C.int(whence))
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if off == -1 {
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return 0, errors.New(fmt.Sprintf("bad result for offset=%d, whence=%d", offset, whence))
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}
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return int64(off), nil
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}
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func (a *asset) Close() error {
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C.AAsset_close(a.ptr)
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return nil
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}
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