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97 lines
2.7 KiB
C++
97 lines
2.7 KiB
C++
/* (c) Magnus Auvinen. See licence.txt in the root of the distribution for more information. */
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/* If you are missing that file, acquire a complete release at teeworlds.com. */
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#include <base/math.h>
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#include <game/generated/client_data.h>
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#include "animstate.h"
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static void AnimSeqEval(CAnimSequence *pSeq, float Time, CAnimKeyframe *pFrame)
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{
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if(pSeq->m_NumFrames == 0)
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{
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pFrame->m_Time = 0;
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pFrame->m_X = 0;
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pFrame->m_Y = 0;
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pFrame->m_Angle = 0;
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}
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else if(pSeq->m_NumFrames == 1)
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{
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*pFrame = pSeq->m_aFrames[0];
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}
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else
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{
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//time = maximum(0.0f, minimum(1.0f, time / duration)); // TODO: use clamp
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CAnimKeyframe *pFrame1 = 0;
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CAnimKeyframe *pFrame2 = 0;
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float Blend = 0.0f;
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// TODO: make this smarter.. binary search
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for(int i = 1; i < pSeq->m_NumFrames; i++)
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{
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if(pSeq->m_aFrames[i - 1].m_Time <= Time && pSeq->m_aFrames[i].m_Time >= Time)
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{
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pFrame1 = &pSeq->m_aFrames[i - 1];
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pFrame2 = &pSeq->m_aFrames[i];
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Blend = (Time - pFrame1->m_Time) / (pFrame2->m_Time - pFrame1->m_Time);
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break;
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}
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}
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if(pFrame1 && pFrame2)
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{
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pFrame->m_Time = Time;
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pFrame->m_X = mix(pFrame1->m_X, pFrame2->m_X, Blend);
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pFrame->m_Y = mix(pFrame1->m_Y, pFrame2->m_Y, Blend);
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pFrame->m_Angle = mix(pFrame1->m_Angle, pFrame2->m_Angle, Blend);
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}
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}
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}
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static void AnimAddKeyframe(CAnimKeyframe *pSeq, CAnimKeyframe *pAdded, float Amount)
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{
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// AnimSeqEval fills m_X for any case, clang-analyzer assumes going into the
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// final else branch with pSeq->m_NumFrames < 2, which is impossible.
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pSeq->m_X += pAdded->m_X * Amount; // NOLINT(clang-analyzer-core.UndefinedBinaryOperatorResult)
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pSeq->m_Y += pAdded->m_Y * Amount;
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pSeq->m_Angle += pAdded->m_Angle * Amount;
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}
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static void AnimAdd(CAnimState *pState, CAnimState *pAdded, float Amount)
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{
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AnimAddKeyframe(pState->GetBody(), pAdded->GetBody(), Amount);
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AnimAddKeyframe(pState->GetBackFoot(), pAdded->GetBackFoot(), Amount);
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AnimAddKeyframe(pState->GetFrontFoot(), pAdded->GetFrontFoot(), Amount);
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AnimAddKeyframe(pState->GetAttach(), pAdded->GetAttach(), Amount);
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}
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void CAnimState::Set(CAnimation *pAnim, float Time)
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{
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AnimSeqEval(&pAnim->m_Body, Time, &m_Body);
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AnimSeqEval(&pAnim->m_BackFoot, Time, &m_BackFoot);
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AnimSeqEval(&pAnim->m_FrontFoot, Time, &m_FrontFoot);
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AnimSeqEval(&pAnim->m_Attach, Time, &m_Attach);
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}
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void CAnimState::Add(CAnimation *pAnim, float Time, float Amount)
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{
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CAnimState Add;
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Add.Set(pAnim, Time);
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AnimAdd(this, &Add, Amount);
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}
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CAnimState *CAnimState::GetIdle()
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{
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static CAnimState State;
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static bool Init = true;
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if(Init)
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{
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State.Set(&g_pData->m_aAnimations[ANIM_BASE], 0);
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State.Add(&g_pData->m_aAnimations[ANIM_IDLE], 0, 1.0f);
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Init = false;
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}
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return &State;
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}
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