Map works!

game/game.c

@@ -1,5 +1,6 @@
 #include "art/game_demo_sprites.h"
 #include "device/device.h"
+#include "map/game_map.h"
 #include "game.h"
 #include "sys/sys.h"
 
@@ -13,6 +14,7 @@ int32_t ellipse_x1 = 96 * 4;
 int32_t ellipse_y1 = 96 * 4;
 int32_t ellipse_dx1 = 3;
 int32_t ellipse_dy1 = 4;
+int32_t map_x = 0;
 
 
 const char* game_title() {
@@ -47,6 +49,9 @@ void game_destroy() {
 void game_update() {
     game_frame += 4;
 
+    map_x += 1;
+    map_x %= 160;
+
     ellipse_x0 += ellipse_dx0;
     if (ellipse_x0 < 0 || ellipse_x0 > DEVICE_W * 4) { ellipse_dx0 *= -1; }
     ellipse_y0 += ellipse_dy0;
@@ -101,4 +106,6 @@ void game_draw() {
         16, 8,
         false, false
     );
+
+    sys_map_draw(game_map, game_demo_sprites, 0, 0, map_x, 8, 32, 18);
 }

game/map/game_map.h

@@ -1,5 +1,11 @@
 #ifndef CROCPARTY_GAME_MAP_H
 #define CROCPARTY_GAME_MAP_H
 
+#include "sys/sys.h"
+
+extern sys_i32 game_map_player_start_x;
+extern sys_i32 game_map_player_start_y;
+extern sys_map game_map;
+
 #endif
 

sys/sys_graphics.c

@@ -267,6 +267,25 @@ void sys_sprite_draw_ext(
     }
 }
 
+void sys_map_draw(
+    sys_map map,
+    sys_spritesheet spritesheet,
+    sys_i32 sx, sys_i32 sy,
+    sys_i32 tile_x, sys_i32 tile_y,
+    sys_i32 tile_w, sys_i32 tile_h
+) {
+    for (sys_i32 ty = 0; ty < tile_h; ty++) {
+        for (sys_i32 tx = 0; tx < tile_w; tx++) {
+            sys_i32 real_tx = tx + tile_x;
+            sys_i32 real_ty = ty + tile_y;
+            if (real_tx < 0 || real_tx >= map.width) { continue; }
+            if (real_ty < 0 || real_ty >= map.height) { continue; }
+            sys_maptile tile = map.tiles[real_tx + map.width * real_ty];
+            sys_sprite_draw(spritesheet, tile, sx + tx * 8, sy + ty * 8);
+        }
+    }
+}
+
 // == internal primitives ==
 void sys_pixel_internal_set(sys_i32 x, sys_i32 y, sys_color c) {
     sys_color realc = sys_dpal[c];

sys/sys_graphics.h

@@ -167,5 +167,16 @@ void sys_sprite_draw_ext(
 // TODO: SSPR
 // TODO: FILLP?
 
+void sys_map_draw(
+    // NOTE: not the same order of args
+    // as on pico 8
+    // but: more consistent!
+    sys_map map,
+    sys_spritesheet spritesheet,
+    sys_i32 sx, sys_i32 sy,
+    sys_i32 tile_x, sys_i32 tile_y,
+    sys_i32 tile_w, sys_i32 tile_h
+    // TODO: Layers?
+);
 
 #endif // CROCPARTY_SYS_GRAPHICS_H