76 lines
2.5 KiB
C++
76 lines
2.5 KiB
C++
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//
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// Created by Wouter Groeneveld on 26/07/18.
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//
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#include <cstdlib>
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#include <engine/gba/tonc_memdef.h>
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#include "sprite.h"
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Sprite::Sprite(const void *imageData, int imageSize, int x, int y, SpriteSize size)
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: x(x), y(y), data(imageData), imageSize(imageSize) {
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setAttributesBasedOnSize(size);
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}
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void Sprite::moveTo(int x, int y) {
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this->x = x;
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this->y = y;
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syncOam();
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}
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void Sprite::syncOam() {
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oam->attr0 = (oam->attr0 & ~ATTR0_Y_MASK) | (y & ATTR0_Y_MASK);
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oam->attr1 = (oam->attr1 & ~ATTR1_X_MASK) | (x & ATTR1_X_MASK);
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}
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void Sprite::move() {
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this->x += this->dx;
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this-> y += this->dy;
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syncOam();
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}
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void Sprite::setAttributesBasedOnSize(SpriteSize size) {
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switch (size) {
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case SIZE_8_8: size_bits = 0; shape_bits = 0; w = 8; h = 8; break;
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case SIZE_16_16: size_bits = 1; shape_bits = 0; w = 16; h = 16; break;
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case SIZE_32_32: size_bits = 2; shape_bits = 0; w = 32; h = 32; break;
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case SIZE_64_64: size_bits = 3; shape_bits = 0; w = 64; h = 64; break;
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case SIZE_16_8: size_bits = 0; shape_bits = 1; w = 16; h = 8; break;
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case SIZE_32_8: size_bits = 1; shape_bits = 1; w = 32; h = 8; break;
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case SIZE_32_16: size_bits = 2; shape_bits = 1; w = 32; h = 16; break;
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case SIZE_64_32: size_bits = 3; shape_bits = 1; w = 64; h = 32; break;
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case SIZE_8_16: size_bits = 0; shape_bits = 2; w = 8; h = 16; break;
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case SIZE_8_32: size_bits = 1; shape_bits = 2; w = 8; h = 32; break;
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case SIZE_16_32: size_bits = 2; shape_bits = 2; w = 16; h = 32; break;
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case SIZE_32_64: size_bits = 3; shape_bits = 2; w = 32; h = 64; break;
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}
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}
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bool Sprite::collidesWith(const Sprite &o) {
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const Sprite &s = *this;
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if((abs(s.x - o.x) < (s.w + o.w) / 2)
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&& abs(s.y - o.y) < (s.h + o.h) / 2) {
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return true;
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}
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return false;
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}
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void Sprite::buildOam(int tileIndex) {
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this->oam = std::unique_ptr<OBJ_ATTR>(new OBJ_ATTR());
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this->oam->attr0 = ATTR0_Y(this->y) |
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ATTR0_MODE(0) |
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(GFX_MODE << 10) |
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(MOSAIC_MODE << 12) |
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(COLOR_MODE_256 << 13) |
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(this->shape_bits << 14);
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this->oam->attr1 = this->x |
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(AFFINE_FLAG_NONE_SET_YET << 9) |
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(HORIZONTAL_FLIP_FLAG << 12) |
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(VERTICAL_FLIP_FLAG << 13) |
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(this->size_bits << 14);
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this->oam->attr2 = ATTR2_ID(tileIndex) |
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ATTR2_PRIO(priority) |
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ATTR2_PALBANK(0);
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}
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