SectrPrototype/code/api.odin

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package sectr
import "base:runtime"
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import "core:dynlib"
import "core:fmt"
import "core:mem"
import "core:mem/virtual"
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import "core:os"
import "core:slice"
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import "core:strings"
import rl "vendor:raylib"
Path_Assets :: "../assets/"
Path_Input_Replay :: "scratch.sectr_replay"
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ModuleAPI :: struct {
lib : dynlib.Library,
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write_time : os.File_Time,
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lib_version : i32,
startup : type_of( startup ),
shutdown : type_of( sectr_shutdown),
reload : type_of( reload ),
tick : type_of( tick ),
clean_temp : type_of( clean_temp ),
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}
@export
startup :: proc( live_mem : virtual.Arena, snapshot_mem : []u8, host_logger : ^ Logger )
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{
init( & memory.logger, "Sectr", host_logger.file_path, host_logger.file )
context.logger = to_odin_logger( & memory.logger )
// Setup memory for the first time
{
arena_size :: size_of( mem.Arena)
internals_size :: 4 * Megabyte
using memory;
block := live_mem.curr_block
live = live_mem
snapshot = snapshot_mem
persistent_slice := slice_ptr( block.base, memory_persistent_size )
transient_slice := slice_ptr( memory_after( persistent_slice), memory_trans_temp_size )
temp_slice := slice_ptr( memory_after( transient_slice), memory_trans_temp_size )
// We assign the beginning of the block to be the host's persistent memory's arena.
// Then we offset past the arena and determine its slice to be the amount left after for the size of host's persistent.
persistent = tracked_allocator_init_vmem( persistent_slice, internals_size )
transient = tracked_allocator_init_vmem( transient_slice, internals_size )
temp = tracked_allocator_init_vmem( temp_slice , internals_size )
context.allocator = tracked_allocator( transient )
context.temp_allocator = tracked_allocator( temp )
}
state := new( State, tracked_allocator( memory.persistent ) )
using state
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context.user_ptr = state
input = & input_data[1]
input_prev = & input_data[0]
rl.SetConfigFlags( { rl.ConfigFlag.WINDOW_RESIZABLE, rl.ConfigFlag.WINDOW_TOPMOST } )
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// Rough setup of window with rl stuff
window_width : i32 = 1000
window_height : i32 = 600
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win_title : cstring = "Sectr Prototype"
rl.InitWindow( window_width, window_height, win_title )
log( "Raylib initialized and window opened" )
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window := & state.app_window
window.extent.x = f32(window_width) * 0.5
window.extent.y = f32(window_height) * 0.5
// We do not support non-uniform DPI.
window.dpi_scale = rl.GetWindowScaleDPI().x
window.dpc = os_default_dpc * window.dpi_scale
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// Determining current monitor and setting the target frametime based on it..
monitor_id = rl.GetCurrentMonitor()
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monitor_refresh_hz = rl.GetMonitorRefreshRate( monitor_id )
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rl.SetTargetFPS( monitor_refresh_hz )
log( fmt.tprintf( "Set target FPS to: %v", monitor_refresh_hz ) )
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// Basic Font Setup
{
path_rec_mono_semicasual_reg := strings.concatenate( { Path_Assets, "RecMonoSemicasual-Regular-1.084.ttf" })
cstr := strings.clone_to_cstring( path_rec_mono_semicasual_reg )
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font_rec_mono_semicasual_reg = rl.LoadFontEx( cstr, 24, nil, 0 )
delete( cstr)
rl.GuiSetFont( font_rec_mono_semicasual_reg ) // TODO(Ed) : Does this do anything?
default_font = font_rec_mono_semicasual_reg
log( "Default font loaded" )
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}
{
using project
path = "./"
name = "First Project"
workspace.name = "First Workspace"
{
using project.workspace
cam = {
target = { 0, 0 },
offset = transmute(Vec2) window.extent,
rotation = 0,
zoom = 1.0,
}
// cam = {
// position = { 0, 0, -100 },
// target = { 0, 0, 0 },
// up = { 0, 1, 0 },
// fovy = 90,
// projection = rl.CameraProjection.ORTHOGRAPHIC,
// }
frame_1.color = Color_BG_TextBox
// Frame is getting interpreted as points (It doesn't have to be, I'm just doing it...)
box_set_size( & frame_1, { 400, 200 } )
// frame_1.position = { 1000, 1000 }
}
}
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}
// For some reason odin's symbols conflict with native foreign symbols...
@export
sectr_shutdown :: proc()
{
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if memory.persistent == nil {
return
}
state := get_state()
// Replay
{
os.close( memory.replay.active_file )
}
// Raylib
{
rl.UnloadFont ( state.font_rec_mono_semicasual_reg )
rl.CloseWindow()
}
log("Module shutdown complete")
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}
@export
reload :: proc( live_mem : virtual.Arena, snapshot_mem : []u8, host_logger : ^ Logger )
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{
using memory;
block := live_mem.curr_block
live = live_mem
snapshot = snapshot_mem
persistent_slice := slice_ptr( block.base, memory_persistent_size )
transient_slice := slice_ptr( memory_after( persistent_slice), memory_trans_temp_size )
temp_slice := slice_ptr( memory_after( transient_slice), memory_trans_temp_size )
persistent = cast( ^TrackedAllocator ) & persistent_slice[0]
transient = cast( ^TrackedAllocator ) & transient_slice[0]
temp = cast( ^TrackedAllocator ) & temp_slice[0]
log("Module reloaded")
}
// TODO(Ed) : This lang really not have a fucking swap?
swap :: proc( a, b : ^ $Type ) -> ( ^ Type, ^ Type ) {
return b, a
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}
@export
tick :: proc ( delta_time : f64 ) -> b32
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{
result := update( delta_time )
render()
return result
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}
@export
clean_temp :: proc()
{
mem.tracking_allocator_clear( & memory.temp.tracker )
}