Thun/implementations/uvm-ncc/xerblin.c

78 lines
1.7 KiB
C

#include <stdlib.h>
#include <uvm/syscalls.h>
#include <uvm/utils.h>
#include "/home/sforman/src/Joypy/implementations/uvm-ncc/font/font.h"
#include "/home/sforman/src/Joypy/implementations/uvm-ncc/graphics.h"
#define RED 0xFF_00_00
#define GREEN 0x00_FF_00
size_t FRAME_WIDTH = 768;
size_t FRAME_HEIGHT = 512;
u32 frame_buffer[393216];
int wid; // Window ID.
void
draw_char(u8 ch, u64 dest_x, u64 dest_y)
{
// Check the inputs.
// Trust that the type "u-" means we don't have to check lower bounds?
if (ch > font_Inconsolata_22_number_of_characters) {
// No error message or anything, just decline to draw.
return;
}
if (dest_x >= (FRAME_WIDTH - font_Inconsolata_22_width)) {
return;
}
if (dest_y >= (FRAME_HEIGHT - font_Inconsolata_22_height)) {
return;
}
carefree_alpha_blend_blit(
frame_buffer,
font_Inconsolata_22_data[ch],
FRAME_WIDTH,
dest_x,
dest_y,
font_Inconsolata_22_width,
font_Inconsolata_22_height
);
}
//void
//keydown(u64 window_id, u16 keycode)
//{
// window_draw_frame(window_id, frame_buffer);
//}
void
mousedown(u64 window_id, u64 new_x, u64 new_y)
{
u32* pix_ptr = frame_buffer + FRAME_WIDTH * new_y + new_x;
*pix_ptr = GREEN;
window_draw_frame(window_id, frame_buffer);
}
void
main()
{
init_font_data();
wid = window_create(FRAME_WIDTH, FRAME_HEIGHT, "Xerblin", 0);
draw_background(frame_buffer, FRAME_WIDTH, FRAME_HEIGHT);
for (size_t ch = 0; ch < font_Inconsolata_22_number_of_characters; ++ch) {
draw_char(
ch,
128 + (ch % 26) * font_Inconsolata_22_width,
128 + (ch / 26) * font_Inconsolata_22_height
);
}
window_draw_frame(wid, frame_buffer);
//window_on_keydown(wid, keydown);
window_on_mousedown(wid, mousedown);
enable_event_loop();
}