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53 lines
1.3 KiB
C++
53 lines
1.3 KiB
C++
#include "common.h"
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#include "WindModifiers.h"
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#include "Camera.h"
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#include "General.h"
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#define MAX_HEIGHT_DIST 40.0f
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#define MIN_FADE_DIST 20.0f
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#define MAX_FADE_DIST 50.0f
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CWindModifiers Array[16];
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int32 CWindModifiers::Number;
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void
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CWindModifiers::RegisterOne(CVector pos, int32 type = 1)
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{
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if (CWindModifiers::Number < 16 && (pos - TheCamera.GetPosition()).Magnitude() < 100.0f) {
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Array[Number].m_pos = pos;
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Array[Number].m_type = type;
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Number++;
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}
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}
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bool
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CWindModifiers::FindWindModifier(CVector pos, float *x, float *y)
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{
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bool bWasWindModifierFound = false;
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CVector2D dir;
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for (int i = 0; i < Number; i++) {
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if (Array[i].m_type == 1) {
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float zDist = Abs(15.0f + pos.z - Array[i].m_pos.z);
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if (zDist < MAX_HEIGHT_DIST) {
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float dist = (pos - Array[i].m_pos).Magnitude();
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if (dist < MAX_FADE_DIST) {
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float distFade = dist < MIN_FADE_DIST ? 1.0f : 1.0f - (dist - MIN_FADE_DIST) / (MAX_FADE_DIST - MIN_FADE_DIST);
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float heightFade = 1.0f - zDist / MAX_HEIGHT_DIST;
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float fade = distFade * heightFade * 0.5f;
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dir = (pos - Array[i].m_pos) * fade / dist;
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bWasWindModifierFound = true;
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}
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}
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}
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}
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if (bWasWindModifierFound) {
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float directionMult = ((CGeneral::GetRandomNumber() & 0x1F) - 16) * 0.0035f + 1.0f;
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*x += dir.x * directionMult;
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*y += dir.y * directionMult;
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}
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return bWasWindModifierFound;
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}
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