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#include "engine/draw_screen.h"
hh_level_entity level;
uint64_t offsetY=0;
uint64_t offsetX=0;
uint8_t hh_world_to_tile(vec2 pos){
int index = (((pos.y/HH_PPU_SPRITE_HEIGHT)*level.size.x) + (pos.x/HH_PPU_SPRITE_WIDTH));//TODO: remove magic number(s)
int tile= level.place[index];
return tile;
}
void hh_update_screen(vec2 view){
int current_tile_y = view.y / HH_PPU_SPRITE_HEIGHT;
int current_tile_x = view.x / HH_PPU_SPRITE_WIDTH;
int offset_py = view.y - (offsetY / 40 * HH_PPU_SPRITE_HEIGHT);
int offset_px = view.x - offsetX * HH_PPU_SPRITE_WIDTH;
static int prev_offset = 0;
int size = MIN(HH_PPU_BG_CANVAS_TILES_H,level.size.x) * MIN(HH_PPU_BG_CANVAS_TILES_V,level.size.y);
if( (offset_py == 0 || offset_py > 230) && level.size.y > level.size.x && prev_offset != offset_py){
if(offset_py==0){
offsetY = MAX(current_tile_y-14,0) * level.size.x;
}
else{
offsetY = current_tile_y * level.size.x;
}
// Update the background screen
for (int BAM_index = 0; BAM_index < size; BAM_index++) {
hh_ppu_update_background(BAM_index, (hh_s_ppu_loc_bam_entry){
.horizontal_flip = false,
.vertical_flip = false,
.palette_index = hh_get_palette(level.place[offsetY + BAM_index]),
.tilemap_index = level.place[offsetY + BAM_index],
});
}
prev_offset = offset_py;
}
else if ((offset_px == 0 || offset_px > 310) && level.size.x > level.size.y && prev_offset != offset_px)
{
if(offset_px==0){
offsetX = MAX((current_tile_x - 14),0);
}
else{
offsetX = current_tile_x;
}
// Update the background screen
for (int BAM_index = 0; BAM_index < size; BAM_index++) {
int var = (BAM_index / HH_PPU_BG_CANVAS_TILES_H) * level.size.x + MIN((BAM_index % HH_PPU_BG_CANVAS_TILES_H + offsetX),level.size.x);
hh_ppu_update_background(BAM_index, (hh_s_ppu_loc_bam_entry){
.horizontal_flip = false,
.vertical_flip = false,
.palette_index = hh_get_palette(level.place[var]),
.tilemap_index = level.place[var],
});
}
}
prev_offset = offset_px;
}
void hh_setup_screen(hh_level_entity currentlevel){
hh_clear_screen();
hh_clear_sprite();
level = currentlevel;
offsetY=0;
offsetX=0;
int size = MIN(HH_PPU_BG_CANVAS_TILES_H, level.size.x) * MIN(HH_PPU_BG_CANVAS_TILES_V, level.size.y);
for (int BAM_index = 0; BAM_index < size; BAM_index++) {
int var = (BAM_index / HH_PPU_BG_CANVAS_TILES_H) * level.size.x + BAM_index % HH_PPU_BG_CANVAS_TILES_H;
hh_ppu_update_background(BAM_index, (hh_s_ppu_loc_bam_entry){
.horizontal_flip = false,
.vertical_flip = false,
.palette_index = hh_get_palette(currentlevel.place[var]),
.tilemap_index = currentlevel.place[var],
});
}
}
vec_cor hh_draw_screen(vec2 player) {
static vec_cor previousViewport = {0, 0};
int offset_py = offsetY / 40 * HH_PPU_SPRITE_HEIGHT;
int offset_px = (offsetX * HH_PPU_SPRITE_WIDTH) ;
vec_cor viewport = hh_update_camera(player,(vec2){.x = offset_px, .y = offset_py},(vec2){.x = HH_PPU_SCREEN_WIDTH + offset_px, .y = 480 + offset_py});//TODO: remove magic number(s)
viewport.x = CLAMP(viewport.x, 0, level.size.x * HH_PPU_SPRITE_WIDTH - HH_PPU_SCREEN_WIDTH);
viewport.y = CLAMP(viewport.y, 0, level.size.y * HH_PPU_SPRITE_HEIGHT - HH_PPU_SCREEN_HEIGHT);
hh_update_screen((vec2){.y=viewport.y,.x=viewport.x});
if (viewport.x == previousViewport.x && viewport.y == previousViewport.y){}
else{
hh_ppu_update_aux((hh_s_ppu_loc_aux){
.bg_shift_x = viewport.x - offset_px,
.bg_shift_y = viewport.y - offset_py,
.fg_fetch = 0,
.sysreset = 0,
});
previousViewport = viewport;
}
return viewport;
}
void hh_clear_screen(){
// (HH_PPU_SCREEN_HEIGHT*HH_PPU_SCREEN_WIDTH)/(HH_PPU_SPRITE_HEIGHT*HH_PPU_SPRITE_WIDTH)
for (int i = 0; i < HH_PPU_BG_CANVAS_TILES_H*HH_PPU_BG_CANVAS_TILES_V; i++) {
hh_s_ppu_loc_bam_entry temp = {
.vertical_flip=false,.horizontal_flip = false,
.palette_index = 3,.tilemap_index = 0
};
hh_ppu_update_background(i,temp);
hh_ppu_update_color(3,0,(hh_ppu_rgb_color_t){0x0,0x0,0x0});
}
hh_ppu_update_aux((hh_s_ppu_loc_aux){
.bg_shift_x = 0,
.bg_shift_y = 0,
.fg_fetch = 0,
.sysreset = 0,
});
}
void hh_clear_sprite(){
for (int i = 0; i < HH_PPU_FG_SPRITE_COUNT; i++) {
hh_ppu_update_foreground(i,(hh_s_ppu_loc_fam_entry){
.position_x = -HH_PPU_SPRITE_WIDTH,
.position_y = -HH_PPU_SPRITE_HEIGHT,
});
}
}
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