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-rw-r--r--src/engine/maths.h7
1 files changed, 6 insertions, 1 deletions
diff --git a/src/engine/maths.h b/src/engine/maths.h
index c7f1b44..bef287e 100644
--- a/src/engine/maths.h
+++ b/src/engine/maths.h
@@ -3,12 +3,17 @@
// #include <math.h>
typedef struct {
- uint32_t x,y;
+ int32_t x,y;
} vec2;
typedef vec2 vec_cen;//centered
typedef vec2 vec_cor;//left upper corner
+vec2 vec_add(vec2 a, vec2 b);
+
+vec_cor vec_cen2cor(vec_cen in, vec2 halfDistance);
+vec_cor vec_cor2cen(vec_cen in, vec2 halfDistance);
+
//fixed point at decimal 7lsb (world positions in pixels (with fixed decimal point))
#define HH_MATH_FIXED_POINT 7