drinkingtea/nostalgia
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[nostalgia/player] Make sprites in demo scene auto-scroll

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This commit is contained in:
Gary Talent
2022-08-02 01:32:46 -05:00
parent 3b19909eb1
commit 6a02161b37
1 changed files with 14 additions and 7 deletions
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21
src/nostalgia/player/app.cpp
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@@ -6,24 +6,31 @@
using namespace nostalgia; using namespace nostalgia;
static unsigned spriteX = 72; static int spriteX = 72;
static unsigned spriteY = 64; static int spriteY = 64;
static int updateHandler(core::Context *ctx) noexcept { static int updateHandler(core::Context *ctx) noexcept {
int xmod = 0;
int ymod = 0;
if (core::buttonDown(ctx, core::GamePad_Right)) { if (core::buttonDown(ctx, core::GamePad_Right)) {
spriteX += 2; xmod = 2;
} else if (core::buttonDown(ctx, core::GamePad_Left)) { } else if (core::buttonDown(ctx, core::GamePad_Left)) {
spriteX -= 2; xmod = -2;
} }
if (core::buttonDown(ctx, core::GamePad_Down)) { if (core::buttonDown(ctx, core::GamePad_Down)) {
spriteY += 2; ymod = 2;
} else if (core::buttonDown(ctx, core::GamePad_Up)) { } else if (core::buttonDown(ctx, core::GamePad_Up)) {
spriteY -= 2; ymod = -2;
} }
if (!xmod && !ymod) {
spriteX += 2;
}
spriteX += xmod;
spriteY += ymod;
constexpr auto s = "nostalgia"; constexpr auto s = "nostalgia";
for (unsigned i = 0; s[i]; ++i) { for (unsigned i = 0; s[i]; ++i) {
const auto c = static_cast<unsigned>(s[i] - ('a' - 1)); const auto c = static_cast<unsigned>(s[i] - ('a' - 1));
core::setSprite(ctx, i, spriteX + 8 * (i + 1), spriteY, c); core::setSprite(ctx, i, static_cast<unsigned>(spriteX) + 8 * (i + 1), static_cast<unsigned>(spriteY), c);
} }
return 16; return 16;
} }