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Sprite shifting support

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This commit is contained in:
Christian Colglazier
2020-09-23 20:09:12 -04:00
parent 94c5b276bb
commit 8106e4ae70
5 changed files with 56 additions and 12 deletions
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36
src/graphics/sprite.cpp
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@ -36,7 +36,9 @@ int Sprite::GetWidth() {
void Sprite::Draw(DaisyPatch patch, int x, int y) {
for (int w = 0; w < width; w++) {
for (int h = 0; h < height; h++) {
patch.display.DrawPixel(x+w, y+h, sprite[w][h]);
patch.display.DrawPixel(x+w, y+h,
sprite[GetShiftArrayX(w)]
[GetShiftArrayY(h)]);
}
}
}
@ -52,8 +54,8 @@ void Sprite::DrawTile(DaisyPatch patch,
int y_max = std::max(y1, y2);
for (int w = x_min; w < x_max; w++) {
for (int h = y_min; h < y_max; h++) {
patch.display.DrawPixel(w, h, sprite[(w-x_min) % width]
[(h-y_min) % height]);
patch.display.DrawPixel(w, h, sprite[GetShiftArrayX((w-x_min) % width)]
[GetShiftArrayY((h-y_min+y_shift) % height)]);
}
}
}
@ -69,3 +71,31 @@ void Sprite::SetBlank() {
}
}
}
void Sprite::SetXShift(int x) {
x_shift = x;
}
void Sprite::SetYShift(int y) {
y_shift = y;
}
void Sprite::AdjustXShift(int x) {
x_shift -= x;
}
void Sprite::AdjustYShift(int y) {
y_shift += y;
}
int Sprite::GetShiftArray(int pos, int shift, int array_size) {
return (array_size + ((pos + shift) % array_size)) % array_size;
}
int Sprite::GetShiftArrayX(int pos) {
return GetShiftArray(pos, x_shift, width);
}
int Sprite::GetShiftArrayY(int pos) {
return GetShiftArray(pos, y_shift, height);
}

9
src/graphics/sprite.h
View File

@ -11,6 +11,11 @@ class Sprite {
private:
int width, height;
bool** sprite;
int x_shift = 0;
int y_shift = 0;
int GetShiftArray(int, int, int);
int GetShiftArrayX(int);
int GetShiftArrayY(int);
public:
Sprite(int, int);
~Sprite();
@ -21,6 +26,10 @@ class Sprite {
void Draw(DaisyPatch, int, int);
void DrawTile(DaisyPatch, int, int, int, int);
void SetBlank();
void SetXShift(int);
void SetYShift(int);
void AdjustXShift(int);
void AdjustYShift(int);
};
#endif // CASCADE_GRAPHICS_SPRITE_H_