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#define BASE_IMPLEMENTATION
#define BASE_RAND_IMPLEMENTATION
#define BASE_MATH_IMPLEMENTATION
#include "../base/base_include.h"
#include <X11/X.h>
#include <X11/Xlib.h>
#include <X11/keysym.h>
#include "tb.h"
internal void
el_push(enemy_list *el, enemy *en)
{
en->next = NULL;
if (el->first == NULL) {
el->first = en;
el->last = en;
} else {
el->last->next = en;
el->last = en;
}
el->count++;
}
internal void
pop_enemies(enemy_list *el)
{
unused(el);
//- TODO(nasr): implement a stack design
}
internal void
load_enemies(Display *MainDisplay, Window *window, GC *gc, enemy_list *el)
{
s32 x = (s32)generate_random_u64(RAND_CONSTANT) / ( 10 << 8 );
s32 y = (s32)generate_random_u64(RAND_CONSTANT) / ( 10 << 8 );
if(el->first == NULL)
{
return;
}
enemy *current = el->first;
for (s32 index = 0; index < el->count; ++index)
{
s32 delta = (s32)generate_random_u64(RAND_CONSTANT);
//- draw
{
XDrawRectangle(MainDisplay, *window, *gc, x * (1/delta), y * (1/delta), 50, 50);
XFillRectangle(MainDisplay, *window, *gc, x * (1/delta), y * (1/delta), 50, 50);
}
{
s32 dx, dy;
if(current->next)
{
dx = current->x - current->next->x;
dy = current->y - current->next->y;
_log("shawakoemba");
} else
{
dx = 50;
dy = 50;
}
//- normalize the distance | why this is needed? no clue
f32 distance = sqrtf(dx*dx + dy*dy);
if(distance > 1.0f) {
f32 speed = delta * 0.5f;
current->x += (s32)((dx / distance) * speed);
current->y += (s32)((dy / distance) * speed);
}
for (s32 index = 0; index < el->count; ++index) {
if(current->x >= 500) delta = -delta;
if(current->y >= 500) delta = -delta;
if(current->x >= 500) delta = -delta;
if(current->x >= 500) delta = -delta;
}
}
if(current->next != NULL)
{
current = current->next;
}
}
// handle enemys
}
int main()
{
b32 running = 1;
Display *MainDisplay = XOpenDisplay(0);
mem_arena *global_arena = arena_create(MiB(8));
mem_arena *enemy_arena = arena_create(MiB(100));
Window root = XDefaultRootWindow(MainDisplay);
int screen = DefaultScreen(MainDisplay);
Visual *v = DefaultVisual(MainDisplay, screen);
XSetWindowAttributes wa = {
.background_pixmap = None,
.background_pixel = BlackPixel(MainDisplay, DefaultScreen(MainDisplay)),
.border_pixmap = CopyFromParent,
.border_pixel= 0,
.bit_gravity = ForgetGravity,
.win_gravity = NorthWestGravity,
.backing_store = NotUseful,
.backing_planes = 1,
.backing_pixel = 0,
.save_under = False,
.event_mask = 0,
.do_not_propagate_mask = 0,
.override_redirect = False,
.colormap = CopyFromParent,
.cursor = None
};
s32 dp_heigth = DisplayHeight(MainDisplay, screen);
s32 dp_width = DisplayWidth(MainDisplay, screen);
s32 WINDOW_WIDTH = 1600;
s32 WINDOW_HEIGHT = 800;
Window window = XCreateWindow(
MainDisplay, // display
root, // parent
(dp_width / 2), // x
(dp_heigth / 2), // y
(u32)WINDOW_WIDTH, // width
(u32)WINDOW_HEIGHT, // height
0, // border_width
CopyFromParent, // depth
CopyFromParent, // class
v, // depth
CWBackPixel, // visual
&wa);
XSetWindowBorder(MainDisplay, window, 60);
XSelectInput(MainDisplay, window, ExposureMask | StructureNotifyMask | KeyReleaseMask | KeyPressMask);
XMapWindow(MainDisplay, window);
XEvent event;
GC gc = XCreateGC(MainDisplay, window, 0, NIL);
XSetForeground(MainDisplay, gc, 0x53f830a2);
s32 delta = 20;
enemy_list *el = PushStruct(enemy_arena, enemy_list);
el->first = NULL;
el->last = NULL;
el->count = 0;
user user =
{
.color = 0x4af333f4ff,
.alive = False,
.x = 400,
.y = 400,
.width = 50,
.height = 50,
};
for (;running;)
{
//- handle collision detection
//- handle enemy movement
XNextEvent(MainDisplay, &event);
switch (event.type)
{
case(KeyPress):
{
KeySym keysym = XLookupKeysym(&event.xkey, 0); //- handle user movement
{
if(keysym == XK_h) user.x -= (delta*1.5);
else if(keysym == XK_l) user.x += (delta*1.5);
else if(keysym == XK_k) user.y -= (delta*1.5);
else if(keysym == XK_j) user.y += (delta*1.5);
else if(keysym == XK_s);
else if(keysym == XK_Escape || keysym == XK_q) goto exit;
else if(keysym == XK_p) {
enemy *en = PushStruct(enemy_arena, enemy);
el_push(el, en);
}
}
//- draw entities
} break;
default: {
_log("exited");
}
}
// clear screen before drawing entities
XClearWindow(MainDisplay, window);
load_enemies(MainDisplay, &window, &gc, el);
XDrawRectangle(MainDisplay, window, gc, user.x, user.y, user.width, user.height);
XFillRectangle(MainDisplay, window, gc, user.x, user.y, user.width, user.height);
user.color = user.color << 8;
}
exit:
arena_destroy(global_arena);
return 0;
}
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