Deliver cake to NPCs

game/BUILD

@@ -5,6 +5,7 @@ cc_library(
     name = "game",
     srcs = glob(["*.c"]) + [
         "art/game_collectibles.c",
+        "art/game_hud.c",
         "art/game_npcs.c",
         "art/game_player.c",
         "art/game_tiles.c",
@@ -17,6 +18,7 @@ cc_library(
 )
 
 add_sprites(name="game_collectibles", n=24)
+add_sprites(name="game_hud", n=2)
 add_sprites(name="game_player", n=96)
 add_sprites(name="game_npcs", n=64)
 add_sprites(name="game_tiles", n=120)

game/art/game_hud.h

@@ -0,0 +1,8 @@
+#ifndef GAME_HUD_H
+#define GAME_HUD_H
+
+#include "sys/sys.h"
+
+extern sys_spritesheet spr_game_hud;
+
+#endif  // ART_GAME_HUD_H

game/game.c

@@ -51,4 +51,5 @@ void game_draw() {
     sys_camera_reset();
 
     game_dialogue_draw();
+    game_player_draw_hud();
 }

game/game_collectible.c

@@ -66,6 +66,12 @@ void game_collectibles_update() {
             game_collectible_bubble.x=c->x / PIXEL_SZ_MICROPIXEL;
             game_collectible_bubble.y=c->y / PIXEL_SZ_MICROPIXEL  + game_collectible_wobb();
             game_collectible_bubble.r=r * PIXEL_SZ_MICROPIXEL;
+
+            switch (c->type) {
+                case GAME_COLLECTIBLE_TYPE_CAKE: game_player_collectibles.n_cake += 16; break;
+                case GAME_COLLECTIBLE_TYPE_MONEY_BIG: game_player_collectibles.n_dollars += 5; break;
+                case GAME_COLLECTIBLE_TYPE_MONEY_SMALL: game_player_collectibles.n_dollars += 1; break;
+            }
         }
     }
 }

game/game_npc.c

@@ -1,4 +1,5 @@
 #include <assert.h>
+#include "art/game_hud.h"
 #include "art/game_npcs.h"
 #include "device/device.h"
 #include "sys/sys.h"
@@ -46,6 +47,7 @@ game_npc* game_npc_create(sys_i32 x, sys_i32 y) {
 
         .present = true,
         .n_dialogues_seen = 0,
+        .received_cake = false,
     };
     game_npcs[id] = npc;
     return &game_npcs[id];
@@ -85,7 +87,12 @@ void game_npc_trigger_dialogue(sys_i32 npc_id) {
 
     // TODO: Make it possible for the player to have the cake
     game_npc* npc = &game_npcs[npc_id];
-    if (npc->no_cake_dialogue != NULL) {
+
+    if (
+        !npc->received_cake &&
+        game_player_collectibles.n_cake == 0 && 
+        npc->no_cake_dialogue != NULL
+    ) {
         dialogue = npc->no_cake_dialogue;
     } else if (npc->n_dialogues_seen < npc->n_dialogues) {
         dialogue = npc->dialogues[npc->n_dialogues_seen++];
@@ -96,6 +103,12 @@ void game_npc_trigger_dialogue(sys_i32 npc_id) {
         return;
     }
 
+    // give the NPC cake if possible
+    if (!npc->received_cake && game_player_collectibles.n_cake > 0) {
+        npc->received_cake = true;
+        game_player_collectibles.n_cake -= 1;
+    }
+
     game_dialogue_display(dialogue);
 }
 
@@ -106,7 +119,20 @@ void game_npcs_draw() {
         if (!n->present) { continue; }
 
         game_npc_palette palette = 
-            game_npc_palettes[game_npcs[i].palette_id % GAME_NPC_N_PALETTES];
+            game_npc_palettes[n->palette_id % GAME_NPC_N_PALETTES];
+
+        if (n->received_cake) {
+            sys_sprite_draw_ext(
+                spr_game_hud,
+                0,
+                n->x / PIXEL_SZ_MICROPIXEL - 4,
+                n->y / PIXEL_SZ_MICROPIXEL - 18,
+                1,
+                1,
+                !n->face_left,
+                false
+            );
+        }
 
         sys_dpal_set(14, palette.main);
         sys_dpal_set(12, palette.alt0_0);

game/game_npc.h

@@ -21,6 +21,7 @@ typedef struct {
 
     bool present;
     uint8_t n_dialogues_seen;
+    bool received_cake;
 } game_npc;
 
 // pointer goes to data section and will be valid forever

game/game_player.c

@@ -1,3 +1,5 @@
+#include <assert.h>
+#include "art/game_hud.h"
 #include "art/game_player.h"
 #include "art/game_tiles.h"
 #include "device/device.h"
@@ -20,6 +22,11 @@ sys_i32 game_player_dx = 0;
 sys_i32 game_player_dy = 0;
 bool game_player_faceleft = false;
 
+game_player_collectibles_t game_player_collectibles = {
+    .n_cake=0,
+    .n_dollars=0
+};
+
 typedef enum {
     GAME_PLAYER_ANIM_STANDING,
     GAME_PLAYER_ANIM_WALKING,
@@ -129,6 +136,14 @@ void game_player_update(bool* allow_input) {
     }
 }
 
+
+void game_player_get_center(sys_i32* x, sys_i32* y) {
+    *x = game_player_bbox.x;
+
+    // center on me, not on feet
+    *y = game_player_bbox.y - 8 * PIXEL_SZ_MICROPIXEL;  
+}
+
 void game_player_set_camera() {
     sys_i32 x = game_player_bbox.x;
     sys_i32 y = game_player_bbox.y;
@@ -182,9 +197,65 @@ void game_player_anim_add_progress(uint8_t amt) {
 }
 
 
-void game_player_get_center(sys_i32* x, sys_i32* y) {
+void game_player_draw_hud_number(sys_i32 number, sys_i32 x, sys_i32 y);
-    *x = game_player_bbox.x;
+void game_player_draw_hud() {
+    sys_i32 y = 4;
+    if (game_player_collectibles.n_dollars > 0) {
+        sys_sprite_draw_ext(
+            spr_game_hud,
+            1,
+            4, y,
+            1, 1,
+            false, false
+        );
+        game_player_draw_hud_number(game_player_collectibles.n_dollars, 16, y);
+        y += 10;
+    }
+    if (game_player_collectibles.n_cake > 0) {
+        sys_sprite_draw_ext(
+            spr_game_hud,
+            0,
+            4, y - 1,
+            1, 1,
+            false, false
+        );
+        game_player_draw_hud_number(game_player_collectibles.n_cake, 16, y);
+        y += 10;
+    }
+}
 
-    // center on me, not on feet
+void game_player_draw_hud_number1(sys_i32 number, sys_i32 x, sys_i32 y, uint8_t color) {
-    *y = game_player_bbox.y - 8 * PIXEL_SZ_MICROPIXEL;  
+    number = sys_min_i32(sys_max_i32(number, 0), 255);
+
+    char s[2];
+    s[1] = 0;
+
+    if (number >= 100) {
+        sys_i32 top_digit = number / 100;
+        assert(0 <= top_digit && top_digit < 10);
+        s[0] = '0' + top_digit;
+        number = number % 100;
+        sys_print(s, x, y, color);
+        x += 8;
+    }
+    if (number >= 10) {
+        sys_i32 top_digit = number / 10;
+        assert(0 <= top_digit && top_digit < 10);
+        s[0] = '0' + top_digit;
+        number = number % 10;
+        sys_print(s, x, y, color);
+        x += 8;
+    }
+    sys_i32 top_digit = number;
+    assert(0 <= top_digit && top_digit < 10);
+    s[0] = '0' + top_digit;
+    sys_print(s, x, y, color);
+}
+void game_player_draw_hud_number(sys_i32 number, sys_i32 x_start, sys_i32 y_start) {
+    for (sys_i32 dy = -1; dy <= 1; dy++) {
+        for (sys_i32 dx = -1; dx <= 1; dx++) {
+            game_player_draw_hud_number1(number, x_start+dx, y_start+dy, 0);
+        }
+    }
+    game_player_draw_hud_number1(number, x_start, y_start, 7);
 }

game/game_player.h

@@ -1,11 +1,18 @@
 #ifndef GAME_PLAYER_H
 #define GAME_PLAYER_H
 
+typedef struct {
+    sys_i32 n_cake;
+    sys_i32 n_dollars;
+} game_player_collectibles_t;
+extern game_player_collectibles_t game_player_collectibles;
+
 void game_player_init();
 void game_player_update(bool* allow_input);
-void game_player_set_camera();
-void game_player_draw();
-
 void game_player_get_center(sys_i32* x, sys_i32* y);
 
+void game_player_set_camera();
+void game_player_draw();
+void game_player_draw_hud();
+
 #endif // GAME_PLAYER_H