__declspec( dllexport ) void explosion( const void * _in, int in_size, void * _out, int out_sz )
{
int i;
Variable *var;
cpBody *body;
cpVect bp;
float angle;
float dist;
float divi;
float finalPower;
float power = PEEKFLOAT(INPUT_MEMBLOCK,0);
cpVect position = PEEKVECT(INPUT_MEMBLOCK,4);
for (i = 0;i != mVariableHandler.mSize;i++)
{
var = mVariableHandler.mPtrArray[i];
if (var == NULL)continue;
if (var->mType != VarTypeBody) continue;
body = (cpBody*)var->mPtr;
if (cpBodyIsStatic(body)) continue;
bp = cpvsub(position,cpBodyGetPos(body));
dist = cpvlength(bp)+0.1f;
divi = (power/dist);
finalPower = -min(power,divi*divi);
angle = cpvtoangle(bp);
cpBodyApplyImpulse(body,cpv(cosf(angle)*finalPower,sinf(angle)*finalPower),cpBodyWorld2Local(body,position));
}
}
static void
update(int ticks)
{
int steps = 1;
cpFloat dt = 1.0f/60.0f/(cpFloat)steps;
for(int i=0; i<steps; i++){
// turn the control body based on the angle relative to the actual body
cpVect mouseDelta = cpvsub(mousePoint, tankBody->p);
cpFloat turn = cpvtoangle(cpvunrotate(tankBody->rot, mouseDelta));
cpBodySetAngle(tankControlBody, tankBody->a - turn);
// drive the tank towards the mouse
if(cpvnear(mousePoint, tankBody->p, 30.0)){
tankControlBody->v = cpvzero; // stop
} else {
cpFloat direction = (cpvdot(mouseDelta, tankBody->rot) > 0.0 ? 1.0 : -1.0);
tankControlBody->v = cpvrotate(tankBody->rot, cpv(30.0f*direction, 0.0f));
}
cpSpaceStep(space, dt);
}
}
int update_brain(Ship* s)
{
float* inputs = new float[NINPUTS];
float noseang = cpBodyGetAngle(s->body) + s->nose_angle;
cpVect rpos = cpBodyGetPosition(s->target->body) - cpBodyGetPosition(s->body);
inputs[0] = cpvlength(rpos);
inputs[1] = restrictangle(cpvtoangle(rpos)-noseang);
cpVect rvel = cpBodyGetVelocity(s->target->body) - cpBodyGetVelocity(s->body);
inputs[2] = (rpos.x * rvel.x + rpos.y * rvel.y)/inputs[0];
inputs[3] = (rpos.x * rvel.y - rpos.y * rvel.x)/(inputs[0]*inputs[0]) - cpBodyGetAngularVelocity(s->body);
inputs[4] = restrictangle(cpBodyGetAngle(s->target->body) + s->target->nose_angle - noseang);
inputs[5] = cpBodyGetAngularVelocity(s->target->body);
s->brain->update(inputs);
delete inputs;
return 0;
}
cpFloat bmx_cpvect_toangle(cpVect * vec) {
return cpvtoangle(*vec);
}
static void update(void) {
int steps, i;
cpFloat dt;
cpVect look, lastPos, curPos;
projectile_t *pj; /* temp for looping */
static cpVect delta = {0, 0};
static projectile_t *curProj = NULL;
static bool canToggleEditor = true;
curPos = atlMousePos();
lastPos = atlMouseLastPos();
/* rotate 'gun' based on mouse position */
look = cpvnormalize(cpvsub(curPos, g_Cannon->body->p));
cpBodySetAngle(g_Cannon->body, cpvtoangle(look));
if (isKeyPressed(KEY_e) && canToggleEditor) {
canToggleEditor = false;
editorMode = !editorMode;
} else if (!isKeyPressed(KEY_e)) {
canToggleEditor = true;
}
if (editorMode) {
if (!editorBody)
initializeEditor();
handleEditor();
} else {
if (editorBody)
destroyEditor();
if (atlLeftMouseDown()) {
if (!curProj) {
/* don't let player hold the left mouse button to fire multiple rounds */
delta = cpvnormalize(cpvsub(atlMouseClickPos(), g_Cannon->body->p));
if (g_Cannon->ai < MAX_PROJECTILES) {
curProj = g_Cannon->ammo[g_Cannon->ai++];
if (curProj) {
cpSpaceAddBody(g_Space, curProj->body);
curProj->body->p = cpvadd(g_Cannon->body->p,
cpvmult(look, g_Cannon->length));
cpSpaceAddShape(g_Space, curProj->shape);
cpBodyApplyImpulse(curProj->body,
cpvmult(cpvforangle(g_Cannon->body->a), 600.0f),
cpvzero);
cpBodyActivate(curProj->body);
}
}
}
} else {
curProj = NULL;
}
}
/* treat projectiles as limited resources. only allocated at the start of a level */
for (i = 0; i <= g_Cannon->ai-1; ++i) {
pj = g_Cannon->ammo[i];
if (!pj)
continue;
if (pj->body->v.x >= -0.01f && pj->body->v.x <= 0.01f &&
pj->body->v.y >= -0.01f && pj->body->v.y <= 0.01f) {
/* TODO: mark an object for deletion, but don't delete immediately */
cpSpaceRemoveBody(g_Space, pj->body);
cpSpaceRemoveShape(g_Space, pj->shape);
free(g_Cannon->ammo[i]);
g_Cannon->ammo[i] = NULL;
}
}
steps = 3;
dt = 1.0f/60.0f/(cpFloat)steps;
for (i = 0; i < steps; ++i) {
cpSpaceStep(g_Space, dt);
}
}
void landerDraw(Lander l)
{
drawCircle(l->body->p, cpvtoangle(l->body->rot), cpCircleShapeGetRadius(l->shape), RGBAColor(1.0, 1.0, 1.0, 1.0), RGBAColor(0.0, 0.0, 0.0, 1.0));
}