139 lines
2.7 KiB
V
139 lines
2.7 KiB
V
// Copyright(C) 2019 Lars Pontoppidan. All rights reserved.
|
|
// Use of this source code is governed by an MIT license file distributed with this software package
|
|
module main
|
|
|
|
import time
|
|
import sokol
|
|
import sokol.sapp
|
|
import sokol.gfx
|
|
import sokol.sgl
|
|
import particle
|
|
|
|
const (
|
|
used_import = sokol.used_import
|
|
)
|
|
|
|
fn main() {
|
|
app := &App{
|
|
width: 800
|
|
height: 400
|
|
pass_action: gfx.create_clear_pass(0.1, 0.1, 0.1, 1.0)
|
|
}
|
|
app.init()
|
|
app.run()
|
|
}
|
|
|
|
struct App {
|
|
pass_action C.sg_pass_action
|
|
mut:
|
|
width int
|
|
height int
|
|
frame i64
|
|
last i64
|
|
ps particle.System
|
|
}
|
|
|
|
fn (mut a App) init() {
|
|
a.frame = 0
|
|
a.last = time.ticks()
|
|
a.ps = particle.System{a.width, a.height}
|
|
a.ps.init(particle.SystemConfig{
|
|
pool: 20000
|
|
})
|
|
}
|
|
|
|
fn (mut a App) cleanup() {
|
|
a.ps.free()
|
|
}
|
|
|
|
fn (a App) run() {
|
|
title := 'V Particle Example'
|
|
desc := C.sapp_desc{
|
|
width: a.width
|
|
height: a.height
|
|
user_data: &a
|
|
init_userdata_cb: init
|
|
frame_userdata_cb: frame
|
|
event_userdata_cb: event
|
|
window_title: title.str
|
|
html5_canvas_name: title.str
|
|
cleanup_userdata_cb: cleanup
|
|
}
|
|
sapp.run(&desc)
|
|
}
|
|
|
|
fn (a App) draw() {
|
|
a.ps.draw()
|
|
}
|
|
|
|
fn init(user_data voidptr) {
|
|
desc := C.sg_desc{
|
|
mtl_device: sapp.metal_get_device()
|
|
mtl_renderpass_descriptor_cb: sapp.metal_get_renderpass_descriptor
|
|
mtl_drawable_cb: sapp.metal_get_drawable
|
|
d3d11_device: sapp.d3d11_get_device()
|
|
d3d11_device_context: sapp.d3d11_get_device_context()
|
|
d3d11_render_target_view_cb: sapp.d3d11_get_render_target_view
|
|
d3d11_depth_stencil_view_cb: sapp.d3d11_get_depth_stencil_view
|
|
}
|
|
gfx.setup(&desc)
|
|
sgl_desc := C.sgl_desc_t{
|
|
max_vertices: 50 * 65536
|
|
}
|
|
sgl.setup(&sgl_desc)
|
|
}
|
|
|
|
fn cleanup(user_data voidptr) {
|
|
mut app := &App(user_data)
|
|
app.cleanup()
|
|
gfx.shutdown()
|
|
}
|
|
|
|
fn frame(user_data voidptr) {
|
|
mut app := &App(user_data)
|
|
app.width = sapp.width()
|
|
app.height = sapp.height()
|
|
t := time.ticks()
|
|
dt := f64(t - app.last) / 1000.0
|
|
app.ps.update(dt)
|
|
draw(app)
|
|
gfx.begin_default_pass(&app.pass_action, app.width, app.height)
|
|
sgl.draw()
|
|
gfx.end_pass()
|
|
gfx.commit()
|
|
app.frame++
|
|
app.last = t
|
|
}
|
|
|
|
fn event(ev &C.sapp_event, user_data voidptr) {
|
|
mut app := &App(user_data)
|
|
if ev.@type == .mouse_move {
|
|
app.ps.explode(ev.mouse_x, ev.mouse_y)
|
|
}
|
|
if ev.@type == .mouse_up || ev.@type == .mouse_down {
|
|
if ev.mouse_button == .left {
|
|
is_pressed := ev.@type == .mouse_down
|
|
if is_pressed {
|
|
app.ps.explode(ev.mouse_x, ev.mouse_y)
|
|
}
|
|
}
|
|
}
|
|
if ev.@type == .key_up || ev.@type == .key_down {
|
|
if ev.key_code == .r {
|
|
is_pressed := ev.@type == .key_down
|
|
if is_pressed {
|
|
app.ps.reset()
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
fn draw(a &App) {
|
|
sgl.defaults()
|
|
sgl.matrix_mode_projection()
|
|
sgl.ortho(0, f32(sapp.width()), f32(sapp.height()), 0.0, -1.0, 1.0)
|
|
sgl.push_matrix()
|
|
a.draw()
|
|
sgl.pop_matrix()
|
|
}
|